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panel cluster will flash in the direction of the turn or lane change.


The lever on the left side of the steering column includes the following: (cid:127) G Turn and Lane-Change Signals. See Turn and


Lane-Change Signals on page 3-7.


(cid:127) 3 Headlamp High/Low-Beam Changer. See


Headlamp High/Low-Beam Changer on page 3-8. Flash-To-Pass Feature. See Flash-to-Pass on page 3-8.


(cid:127) N Windshield Wipers. See Windshield Wipers on


page 3-8.


(cid:127) L Windshield Washer. See Windshield Washer


on page 3-10.


(cid:127) _ Heated Washer Fluid. See Windshield Washer


on page 3-10.


You may also have an arrow in the outside mirror that flashes when the turn signal is used. See Outside Power Mirrors on page 2-36 for more information. Raise or lower the lever until the arrow starts to flash to signal a lane change. Hold it there until the lane change is complete. If you momentarily press and release the lever, the turn signal will flash three times. If the arrows flash very fast as you signal a turn or a lane change, a signal bulb may be burned out and other drivers will not see your turn signal. If a bulb is burned out, replace it to help avoid an accident. If the arrows do not go on at all when you signal a turn, check the fuse. See Fuses and Circuit Breakers on page 5-93.


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(cid:127) Turn Signal On Chime If your turn signal is left on for more than 0.8 miles (1.3 km), a chime will sound at each flash of the turn signal. To turn off the chime, move the turn signal lever to the off position. Headlamp High/Low-Beam Changer To change the headlamps from low beam to high beam, push the turn signal lever away from you. To change from high beam to low beam, pull the turn signal lever toward you.


While the high beams are on, this light located on the instrument panel cluster will also be on.


Flash-to-Pass This feature lets you use the high-beam headlamps to signal the driver in front of you that you want to pass. It works even if your headlamps are off. Pull the turn signal lever toward you briefly to flash-to-pass.


If the headlamps are off or on low beam, the high-beam headlamps will turn on. They will stay on as long as you hold the lever toward you and the high-beam indicator on the instrument panel cluster will come on.


Windshield Wipers You control the windshield wipers by turning the band with the wiper symbol on it. 8(Mist): For a single wiping cycle, turn the band to mist. Hold it there until the wipers start. Then let go. The wipers will stop after one wipe. If you want more wipes, hold the band on mist longer. N(Delay): You can set the wiper speed for a long or short delay between wipes. This can be very useful in light rain or snow. Turn the band to choose the delay time. The closer to the top of the lever, the shorter the delay. 6 (Low Speed): For steady wiping at low speed, turn the band away from you to the first solid band past the delay settings. 1 (High Speed): For high-speed wiping, turn the band further, to the second solid band past the delay settings. 9(Off): To stop the wipers, move the band to off.


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Be sure to clear ice and snow from the wiper blades before using them. If they are frozen to the windshield, carefully loosen or thaw them. If your blades do become worn or damaged, replace with new blades or blade inserts. Heavy snow or ice can overload the wiper motor. A circuit breaker will stop the motor until it cools. Clear away snow or ice to prevent an overload. Your vehicle is equipped with wiper-activated headlamps. After the windshield wipers have been on for approximately six seconds, the headlamps will automatically turn on. See Wiper Activated Headlamps on page 3-15 for more information.


Rainsense™ II Wipers If your vehicle has this feature, the moisture sensor is mounted on the interior of the windshield beside the rearview mirror and is used to automatically operate the wipers. This system operates by monitoring the amount of moisture build-up on the windshield. Wipes occur as needed to clear the windshield depending on the driving conditions and the sensitivity setting. In light rain or snow, fewer wipes will occur. In heavy rain or snow, wipes will occur more frequently.


The system will operate in the delay, low speed and high speed modes. If the system is left on for long periods of time, occasional wipes may occur without any moisture on the windshield. This is normal and indicates that the Rainsense™ system is active. The Rainsense™ system is activated by turning the wiper control band to one of the five sensitivity levels within the delay area. The delay position closest to 9(off) is the lowest sensitivity setting, level one. The highest sensitivity setting, level five, is closest to 6 (low). A single wipe will occur each time you turn the wiper control band to a higher sensitivity level to indicate that the sensitivity level has been increased. Notice: Going through an automatic car wash with the wipers on can damage them. Turn the wipers off when going through an automatic car wash. The MIST and wash cycles operate as normal and are not affected by the Rainsense™ function. The system can be overridden at any time by manually changing the wiper control to 6 (low) or 1 (high) speed. Notice: Do not place stickers or other items on the exterior glass surface directly in front of the rain sensor. Doing this could cause the rain sensor to malfunction.


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Windshield Washer


{CAUTION:


In freezing weather, do not use your washer until the windshield is warmed. Otherwise the washer fluid can form ice on the windshield, blocking your vision.


J (Washer Fluid): Press and release this paddle, located at the top of the turn signal/multifunction lever, to spray washer fluid on the windshield. The wipers will clear the windshield and either stop or return to your preset speed. For more washer cycles, press and hold the paddle.


_ (Heated Washer Fluid): If your vehicle is equipped, the heated windshield washer fluid system may be used to help clear ice, snow, tree sap, or bugs from your windshield. Sliding the switch on the turn signal/multifunction lever to this position and then releasing it will activate the heated windshield washer fluid system. This activation will initiate four heated wash/wipe cycles. The first heated wash/wipe cycle may take up to 40 seconds to occur, depending on outside temperature. After the first wash/wipe cycle, it may take up to 20 seconds for each of the remaining cycles. The heated windshield washer fluid system may be turned off at any time by sliding the switch on the turn signal/multifunction lever to this position again. When the heated windshield washer fluid system is activated under certain outside temperature conditions, steam may flow out of the washer nozzles for a short period of time before washer fluid is sprayed. This is a normal condition. A message will be displayed on the Driver Information Center (DIC) when the washer fluid is low. See DIC Warnings and Messages on page 3-56.


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Cruise Control With cruise control, you can maintain a speed of about 25 mph (40 km/h) or more without keeping your foot on the accelerator. This can really help on long trips. Cruise control does not work at speeds below about 25 mph (40 km/h). When you apply your brakes, cruise control is turned off.


See Traction Control System (TCS) on page 4-9. When road conditions allow you to safely use it again, you may turn the cruise control back on.


The cruise control buttons are located on left side of the steering wheel.


{CAUTION:


Cruise control can be dangerous where you cannot drive safely at a steady speed. So, do not use your cruise control on winding roads or in heavy traffic. Cruise control can be dangerous on slippery roads. On such roads, fast changes in tire traction can cause excessive wheel slip, and you could lose control. Do not use cruise control on slippery roads.


If your vehicle is in cruise control when the traction control system (if equipped) begins to limit wheel spin, the cruise control will automatically disengage.


2006 - Buick Lucerne Owner Manual


T (On/Off): Press this button to turn cruise control on and off. The indicator will be lit when cruise control is on. + RES (Resume/Accelerate): Press this button to make the vehicle accelerate or resume to a previously set speed. SET–: Press this button to set the speed or make the vehicle decelerate. [ (Cancel): Press this button to cancel cruise control.


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Setting Cruise Control Cruise control will not work if your parking brake is set, or if the master cylinder brake fluid level is low. The cruise control light on the instrument panel cluster will come on after the cruise control has been set to the desired speed.


{CAUTION:


If you leave your cruise control on when you are not using cruise, you might hit a button and go into cruise when you do not want to. You could be startled and even lose control. Keep the cruise control switch off until you want to use cruise control.


1. Press the cruise control on/off button. 2. Get up to the speed you want. 3. Press and release the SET– button located on the


steering wheel.


4. Take your foot off the accelerator.


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Resuming a Set Speed Suppose you set your cruise control at a desired speed and then you apply the brake. This shuts off the cruise control. But you do not need to reset it. Once you are driving about 25 mph (40 km/h) or more, press the +RES button on your steering wheel. The vehicle will go back to your chosen speed and stay there. Increasing Speed While Using Cruise Control To increase the cruise speed while using cruise control: (cid:127) Press and hold the +RES button on the steering wheel until you reach your new desired speed, then release it. To increase vehicle speed in small increments, press the +RES button.


2006 - Buick Lucerne Owner Manual


(cid:127) Reducing Speed While Using Cruise Control To reduce your speed while using cruise control: (cid:127) Press and hold the SET– button on the steering wheel until you reach the lower speed you want, then release it. To slow down in very small amounts, press the SET– button on the steering wheel briefly. Each time you do this, you will go about 1 mph (1.6 km/h) slower.


Passing Another Vehicle While Using Cruise Control Use the accelerator pedal to increase vehicle speed. When you take your foot off the pedal, your vehicle will slow down to the cruise speed you set earlier.


Using Cruise Control on Hills How well your cruise control will work on hills depends upon your speed, load and the steepness of the hills. When going up steep hills, you may have to step on the accelerator pedal to maintain your speed. When going downhill, you may have to brake or shift to a lower gear to keep your speed down. Of course, applying the brake takes you out of cruise control. Many drivers find this to be too much trouble and do not use cruise control on steep hills. Ending Cruise Control There are three ways to end cruise control: (cid:127) Step lightly on the brake pedal. (cid:127) Press the [ (cancel) button on the steering wheel. (cid:127) Press the T (on/off) button on the steering


wheel.


Erasing Speed Memory When you turn off the cruise control or the ignition, your cruise control set speed memory is erased.


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(cid:127) Exterior Lamps


The exterior lamps control is located on the instrument panel to the left of the steering wheel.


It controls the following systems: (cid:127) Headlamps


Taillamps


(cid:127) Parking Lamps


License Plate Lamps Instrument Panel Lights Fog Lamps


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The exterior lamps control has four positions: O (Off): Turn the control to this position to turn off the exterior lamps. AUTO (Automatic): Turn the control to this position to automatically turn on the headlamps at normal brightness, together with the following: (cid:127) Parking Lamps


Instrument Panel Lights


;(Parking Lamps): Turn the control to this position to turn on the parking lamps together with the following:


Taillamps License Plate Lamps Instrument Panel Lights


2(Headlamps): Turn the control to this position to turn on the headlamps together with the following lamps listed below. A warning chime will sound if you open the driver’s door when the ignition switch is off and the headlamps are on. (cid:127) Parking Lamps


License Plate Lamps Instrument Panel Lights


- (Fog Lamps): Push the exterior lamps control in to turn on the fog lamps. See Fog Lamps on page 3-16.


2006 - Buick Lucerne Owner Manual


(cid:127) (cid:127) (cid:127) (cid:127) (cid:127) (cid:127) (cid:127) (cid:127) (cid:127) (cid:127) Wiper Activated Headlamps This feature turns on the low-beam headlamps, instrument panel cluster backlighting and taillamps when the windshield wipers have been in use for about six seconds. If the wiper activated headlamps are on and the ignition switch is turned to C (RUN), the wiper activated headlamps will continue. When you turn the key to A (OFF), the wiper activated headlamps will immediately turn off. The wiper activated headlamps will also turn off if you turn off the windshield wipers.


Headlamps on Reminder If you leave the exterior lamp buttons for the headlamps or parking lamps on, remove the key from the ignition and open the driver’s door, you will hear a continuous warning chime. The chime will turn off when the lamps are turned off.


Daytime Running Lamps (DRL) Daytime Running Lamps (DRL) can make it easier for others to see the front of your vehicle during the day. DRL can be helpful in many different driving conditions, but they can be especially helpful in the short periods after dawn and before sunset. Fully functional daytime running lamps are required on all vehicles first sold in Canada.


A light sensor on top of the instrument panel monitors the exterior light level for the operation of DRL, so be sure it is not covered. The DRL system will make your low-beam headlamps turn on at reduced brightness in daylight when the following conditions are met:


The ignition is on. The exterior lamp button for the headlamps is off. The automatic transaxle is not in PARK (P).


When the DRL are on, only your low-beam headlamps will be on. The parking lamps, taillamps, sidemarker and other lamps will not be on. When it is dark enough outside, your low-beam headlamps will come on. The other lamps that turn on with your headlamps will also turn on. When it is bright enough outside, the regular lamps will go off, and your low-beam headlamps change to the reduced brightness of DRL. To turn off all exterior lighting at night when you are parked, turn the exterior lamp control to the off position. The exterior lamps will turn back on automatically when you move the transaxle out of PARK (P). See Exterior Lamps on page 3-14 for more information. As with any vehicle, you should turn on the regular headlamp system when you need it.


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(cid:127) (cid:127) (cid:127) Fog Lamps - (Fog Lamps): If your vehicle is equipped with fog lamps, it is located on the exterior lamps control. The exterior lamps control is located on the instrument panel to the left of the steering column. Your ignition must be in C (RUN) for the fog lamps to illuminate. To turn the fog lamps on, press the exterior lamps button. A light will come on in the instrument panel cluster to let you know that the fog lamps are on. Press the exterior lamps button again to turn the fog lamps off. The ignition must be in C (RUN) and the parking lamps must be on for your fog lamps to work. The fog lamps will go off while you change to high-beam headlamps. Some localities have laws that require the headlamps to be on along with the fog lamps.


Cornering Lamps If your vehicle has this feature, the cornering lamps come on when: the headlamps or parking lamps are on, the vehicle is not in PARK (P), and you signal a turn with the turn signal/multifunction lever. They provide more light for cornering.


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Exterior Lighting Battery Saver If the exterior lamp button has been left on, the exterior lamps will turn off about 10 minutes after the ignition is turned to A (OFF) and a door has been opened. This protects against draining the battery in case you have accidentally left the headlamps or parking lamps on. If you need to leave the lamps on for more than 10 minutes, use the manual control to turn the lamps back on after the ignition is turned to A (OFF) and any door is opened. To delay the lamps from turning off, see DIC Vehicle Customization on page 3-65.


Instrument Panel Brightness D (Instrument Panel Brightness): This feature controls the brightness of the instrument panel lights.


The button for this control is located next to the exterior lamps control.


Push the button in and release to extend the button. Turn the button clockwise to increase the brightness of the instrument panel lights and counter clockwise to decrease the brightness. Turning the button completely clockwise to the detent will turn on the courtesy lamps.


2006 - Buick Lucerne Owner Manual


Courtesy Lamps If it is dark enough outside, when any door is opened, several lamps go on. They make it easy for you to enter and leave the vehicle. Turn these lamps on manually by turning the instrument panel brightness control completely clockwise.


Entry Lighting If it is dark enough outside when you press the unlock button on the remote keyless entry transmitter, the interior courtesy lamps will turn on and stay on for about 40 seconds. The lamps can be turned off immediately by pressing the lock button on the remote keyless entry transmitter, turning the ignition key to C (RUN) or activating the power door locks.


Delayed Entry Lighting The interior lamps will turn on if you open the door when it is dark enough outside. When you close the door with the ignition off, the interior lamps will stay on for up to 25 seconds or until the ignition is turned to an on position. When the lamps turn off as a result of the 25 second timer or the ignition switch being turned on, the lighting will deactivate by way of the theater dimming effect. Locking the doors will override the delayed entry lighting feature and the lamps will turn off right away.


2006 - Buick Lucerne Owner Manual


Theater Dimming This feature allows for a three to five-second fade out of the courtesy lamps instead of immediate turn off.


Delayed Exit Lighting If it is dark enough outside when you remove the key from the ignition, the interior lamps will turn on and stay on for about 25 seconds. This will give you time to find the door pull handle or lock switches. Once the key is inserted into the ignition, the exit lighting will be cancelled and the lighting will fade out.


Perimeter Lighting If it is dark enough outside when the unlock button on the remote keyless entry transmitter is pressed, the DRL, parking lamps and back-up lamps will come on. This feature can be programmed in the on for various amounts of seconds or off mode for each transmitter. See DIC Vehicle Customization on page 3-65 for information on programming.


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Front Reading Lamps The front reading lamps, located on the headliner, are turned on or off by pressing one of the buttons located near each lamp.


Battery Load Management The battery load management feature is designed to monitor the vehicle’s electrical load and determine when the battery is in a heavy discharge condition. During times of high electrical loading, the engine may idle at a higher RPM setting than normal to make sure the battery charges. High electrical loads may occur when several of the following are on: headlamps, high beams, rear window defogger, fan at high speed, heated seats (if equipped), and engine cooling fans. If your vehicle’s battery remains in a heavy discharge condition for a long period of time, the fan, rear defogger, heated seats, and heated mirrors will be disabled and the DIC will display SERVICE BATTERY CHARGING SYSTEM. This can happen either under long periods of idling or low speed driving with high electrical loading, or in the event of a charging system fault. See DIC Warnings and Messages on page 3-56
for more information.


Inadvertent Power Battery Saver This feature is designed to protect your vehicle’s battery against drainage from the interior lamps, or garage door opener. When the ignition is turned off, the power to these features will automatically turn off after 10 minutes. Power will be restored for an additional 10 minutes if any door is opened, the trunk is opened or the courtesy lamp switch is turned on.


Ultrasonic Rear Parking Assist (URPA) If your vehicle is equipped, the Ultrasonic Rear Parking Assist (URPA) system is designed to help you park while in REVERSE (R). It operates only at speeds less than 5 mph (8 km/h). URPA helps make parking easier and helps you avoid colliding with objects such as parked vehicles. The URPA system detects objects that are close to the rear of the vehicle which are at least 10 inches (25.4 cm) off the ground and below hood or trunk level. The system detects objects up to 8 feet (2.5 m) behind your vehicle. URPA determines how close these objects are from your bumper within this area. Ultrasonic sensors on the rear bumper are used to detect the distance to the object.


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{CAUTION:


Even with the Ultrasonic Rear Park Assist system, the driver must check carefully before backing up. The system does not operate above speeds of 5 mph (8 km/h). The system does not detect objects more than 8 feet (2.5 meters) behind the vehicle. Also, the system does not detect objects that are below your bumper, underneath your vehicle, or some objects very close to the vehicle. The system is not designed to detect children, pedestrians, bicyclists, or pets. So, unless you check carefully behind your vehicle while you are backing up, they could be injured or killed. Whether or not you are using rear park assist, always check carefully behind your vehicle before backing up and then watch closely as you do.


2006 - Buick Lucerne Owner Manual


The display is located near the rear window and can be seen by looking over your right shoulder.


The display has three color-coded lights. The URPA lights are used to provide distance and system information, along with beeps played out the speakers. How the System Works When the shift lever is moved into REVERSE (R), the rear display will briefly illuminate to let you know the display is operating correctly. URPA comes on automatically when the shift lever is moved into REVERSE (R). The system also does not work at a reverse speed greater than 5 mph (8 km/h). To remind you of this, the red light on the rear display will flash. The system can be disabled using the Driver Information Center (DIC). See DIC Controls and Displays on page 3-50.


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How the System Works when Backing If the shift lever is in REVERSE (R), URPA detects objects close to the rear bumper. The first time an object is detected a single beep will sound. If an object is detected at a REVERSE (R) speed between 0 mph (0 km/h) and 5 mph (8 km/h), the following describes what will occur based on your distance to a detected object located behind the vehicle: (cid:127) At distances between 40 inches (1 m) and 8 ft (2.5 m), a single amber light will be lit.


(cid:127) At distances between 23 inches (0.6 m) and 40 inches (1 m), both amber lights will be lit. (cid:127) At distances between 12 inches (0.3 m) and


23 inches (0.6 m), all three lights (amber/amber/red) will be lit.


(cid:127) At distances less than 12 inches (0.3 m), a beeping sound will repeat for a short time and all three lights (amber/amber/red) will be lit and flashing.


When the System Does Not Seem to Work Properly If the URPA system will not activate due to a temporary condition, the message PARK ASSIST OFF will be displayed on the DIC and a red light will be shown on the rear URPA display when the shift lever is moved into REVERSE (R). This occurs under the following conditions:


The driver disables the system. See DIC Controls and Displays on page 3-50. The parking brake pedal is depressed.


(cid:127) A trailer was attached to your vehicle, or a bicycle or an object was hanging out of your trunk during your last drive when you turned off the vehicle. If the attached objects are removed from your vehicle before the start of your next drive, the system will return to normal operation unless an object is detected when the vehicle is shifted into REVERSE (R). If this occurs, URPA assumes the object is still attached, so you will have to wait until the vehicle is driven forward above 15 mph (25 km/h) before URPA will return to normal operation.


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(cid:127) (cid:127) The ultrasonic sensors are not kept clean. So, be sure to keep your vehicle’s rear bumper free of mud, dirt, snow, ice, and slush. For cleaning instructions, see Washing Your Vehicle on page 5-87. If the DIC still displays the PARK ASSIST OFF message after cleaning the bumper and driving forward at a speed of at least 15 mph (25 km/h), see your dealer.


(cid:127) Other conditions that may affect system performance


include vibrations from a jackhammer or the compression of air brakes on a very large truck or other mechanical devices that interfere with URPA performance.


(cid:127) When URPA is disabled without driver action and the


driver attempts to turn URPA back on using the Driver Information Center (DIC), the PARK ASSIST ON option will not be selectable if the necessary conditions stated above for normal system operation are not met.


As always, drivers should use care when backing up a vehicle. Always look behind you, being sure to check for other vehicles, obstructions and blind spots. For Driver Information Center messages related to URPA, see DIC Warnings and Messages on page 3-56. If the bumper is damaged, your URPA system may not work properly. Take the vehicle to your dealer to repair the system.


2006 - Buick Lucerne Owner Manual


Accessory Power Outlet(s) The accessory power outlets can be used to plug in electrical equipment such as a cellular telephone or CB radio. Your vehicle has two power outlets. One is located next to the ashtray and the other is located on the right forward lower edge of the driver’s seat. Your vehicle may have a small cap that must be pulled down to access the accessory power outlet. If it does, when not using the outlet be sure to cover it with the protective cap. Notice: Leaving electrical equipment on for extended periods will drain the battery. Always turn off electrical equipment when not in use and do not plug in equipment that exceeds the maximum amperage rating. Certain electrical accessories may not be compatible to the accessory power outlets and could result in blown vehicle or adapter fuses. If you experience a problem see your dealer for additional information on the accessory power outlets.


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(cid:127) Notice: Adding any electrical equipment to your vehicle may damage it or keep other components from working as they should. The repairs would not be covered by your warranty. Do not use equipment exceeding maximum amperage rating. Check with your dealer before adding electrical equipment. When adding electrical equipment, be sure to follow the proper installation instructions included with the equipment. Notice: damage not covered by your warranty. Do not hang any type of accessory or accessory bracket from the plug because the power outlets are designed for accessory power plugs only.


Improper use of the power outlet can cause


If you put papers, pins, or other flammable


Ashtray(s) and Cigarette Lighter Push down on the front center tray to reveal the front ashtray, cigarette lighter, and accessory power outlet. The ashtray can be removed for cleaning. Hold the sides of the ashtray and then pull the ashtray up and out. Notice: items in the ashtray, hot cigarettes or other smoking materials could ignite them and possibly damage your vehicle. Never put flammable items in the ashtray. To use the lighter, push the center all the way in and let it go. When it is ready, the center will pop back out by itself. Pull out the entire unit to use it. Notice: Holding a cigarette lighter in while it is heating will not allow the lighter to back away from the heating element when it is hot. Damage from overheating may occur to the lighter or heating element, or a fuse could be blown. Do not hold a cigarette lighter in while it is heating.


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Climate Controls


Climate Control System With this system you can control the heating, cooling, and ventilation for your vehicle. If your vehicle has the remote start feature and it is activated, the climate control system will automatically cool the vehicle if the temperature is greater than 90°F (32°C) and heat the vehicle if the temperature is below 37°F (3°C). If the temperature is between 37°F (3°C) and 90°F (32°C), the last control setting selected when the engine was running will be used. Normal operation and the last setting of the climate control system will return after the ignition key is turned to the C (RUN) position. See Remote Keyless Entry System Operation on page 2-6 for more information.


2006 - Buick Lucerne Owner Manual


Operation ( (Off): Turn the left knob to this position to turn the climate control system off. 9(Fan): Turn the left knob clockwise or counterclockwise to increase or decrease the fan speed. The fan speed will be temporarily reduced between the transition to a new mode. The fan will resume when the new mode is complete. If the airflow seems low when the fan speed is at the highest setting, the passenger compartment air filter may need to be replaced. For more information, see Passenger Compartment Air Filter on page 3-31 and Scheduled Maintenance on page 6-4. Temperature Control: Turn the center knob clockwise or counterclockwise to warm or cool the air coming through the outlets. Use the right knob to select from the following modes: H(Vent): This mode directs outside air to the instrument panel outlets. If driving in city traffic, and the vehicle is stopped and idling, or the weather is hot, turn on the recirculation mode. )(Bi-Level): This mode directs half of the air to the instrument panel outlets, and the remaining air to the floor outlets. Slightly cooler air is directed to the instrument panel outlets and warmer air is directed to the floor outlets.


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6(Floor): This mode directs most of the air to the floor outlets with some air directed toward the side window outlets and a little air directed to the windshield. In this mode, the system will automatically use outside air. If recirculation is selected, it will stay on for three minutes to reduce windshield fogging. The led will come on. You can also select modes by using the following buttons: h(Recirculate): Press this button to recirculate cabin air through the vehicle. It can be used to prevent outside air and odors from entering your vehicle or to help heat or cool the air inside your vehicle more quickly. An indicator light below the button will come on in this mode. Operation in this mode during periods of high humidity and cool outside temperatures may result in increased window fogging. If window fogging is experienced, select the defrost mode. #(Air Conditioning): Press this button to turn the air conditioning system on or off. When this button is pressed, an indicator light below the button will come on to let you know the air conditioning is activated. Air conditioning can be selected in any mode as long as the fan knob is not in the off position. When in defrost and defog the air-conditioning compressor will come on automatically.


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On hot days during the vehicle’s initial start-up, open the windows to let hot inside air escape; then close them. This helps to reduce the time it takes for the vehicle to cool down. It also helps the system to operate more efficiently. For quicker cool down on hot days, do the following: 1. Select the vent air mode. 2. Select the recirculation mode. 3. Select the air conditioner. 4. Select the coolest temperature. 5. Select the highest fan speed. The air-conditioning system removes moisture from the air, so you may sometimes notice a small amount of water dripping underneath your vehicle while idling or after turning off the engine. This is normal. Defogging and Defrosting Fog on the inside of the vehicle is a result of high humidity causing moisture to condense on the cool window glass. This can be minimized if the climate control system is used properly. There are two modes to clear frost or fog from the windshield. Use the defog mode to clear the windows of condensation and to warm the vehicle’s occupants. Use the defrost mode to remove frost or condensation from the windshield quickly. Recirculation cannot be selected when in these modes (the indicator light will come on when pressed).


2006 - Buick Lucerne Owner Manual


See “Rear Window Defogger” later in this section for information on clearing the rear window of fog or ice. Turn the right knob to select the defog or defrost mode. -(Defog): This mode directs half of the air to the windshield and the side window outlets and half to the floor outlets. When you select this mode, the system turns recirculation off and runs the air conditioning compressor unless the outside temperature is near or below freezing. Pressing the recirculation button will have no effect other than turning on the indicator light while in defog mode. 0(Defrost): This mode directs most of the air to the windshield and the side window outlets. When you select this mode, the system turns recirculation off. Pressing the recirculation button will have no effect other than turning on the indicator light while in defrost mode. Rear Window Defogger The rear window defogger uses a warming grid to remove fog from the rear window. <(Rear Window Defogger): Press this button to turn the rear window defogger on or off. An indicator light below the button will come on to let you know that the rear window defogger is activated. Be sure to clear as much snow from the rear window as possible.


2006 - Buick Lucerne Owner Manual


The rear window defogger will only work when the ignition is in run. The rear window defogger will stay on for approximately 20 minutes after the button is pressed if you are traveling at slower vehicle speeds. At higher vehicle speeds, the rear defogger may stay on continuously. If turned on again, the defogger will only run for approximately 10 minutes before turning off. The defogger can be turned off by pressing the button again, by turning the ignition to B (ACCESSORY) or C (RUN), or by turning off the engine.


If your vehicle has heated outside rearview mirrors, the mirrors will heat to help clear fog or frost from the surface of the mirror when the rear window defogger is on. See Outside Automatic Dimming Heated Mirror on page 2-37 for more information. Notice: Do not use anything sharp on the inside of the rear window. If you do, you could cut or damage the warming grid, and the repairs would not be covered by your warranty. Do not attach a temporary vehicle license, tape, a decal or anything similar to the defogger grid.


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Dual Automatic Climate Control System With this system you can control the heating, cooling, and ventilation for your vehicle. If your vehicle has the remote start feature and it is activated, the climate control system will automatically cool the vehicle if the temperature is greater than 90°F (32°C) and heat the vehicle if the temperature is below 37°F (3°C). If the temperature is between 37°F (3°C) and 90°F (32°C), the last control setting selected when the engine was running will be used. Normal operation and the last setting of the climate control system will return after the ignition key is turned to the C (RUN) position. See Remote Keyless Entry System Operation on page 2-6 for more information.


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Automatic Operation AUTO 9(Automatic Fan): When this position is selected on the fan control, the system will adjust the fan speed. If the OnStar® system is activated when this position is selected, the fan speed will lower. AUTO (Automatic Mode) 1. Turn the fan control to the AUTO position. 2. Turn the mode control to the AUTO position. 3. Adjust the temperature to a comfortable setting


between 68°F (21°C) and 78°F (26°C). Choosing the coldest or warmest temperature setting will not cause the system to heat or cool any faster. In cold weather, the system will start at reduced fan speeds to avoid blowing cold air into your vehicle until warmer air is available. The system will start out blowing air at the floor but may change modes automatically as the vehicle warms up to maintain the chosen temperature setting. The length of time needed to warm the interior will depend on the outside temperature.


4. Wait a few minutes for the system to automatically regulate. Then adjust the temperature as necessary to find your comfort setting.


Do not cover the solar sensor located in the center of the instrument panel, near the windshield. For more information on the solar sensor, see “Sensors” later in this section.


2006 - Buick Lucerne Owner Manual


After your vehicle is started, the display will show the interior temperature settings. When the ENG/MET (English/metric) button on the Driver Information Center (DIC) is pressed, the display will show readings in Fahrenheit or Celsius. Use the ENG/MET button to toggle between them. AUTO #(Automatic Air Conditioning): If the AUTO position is selected on the fan or mode control, the system will automatically control the air conditioning compressor. The A/C compressor will run automatically even at cool outside temperatures in order to dehumidify the air. The A/C indicator light will be lit when the system is operating automatically, even at near freezing outside temperatures. Press the A/C button on the fan control to turn off the A/C. For improved window clearing performance in defog or defrost modes, the A/C compressor will run automatically in damp cool conditions. h (Auto Recirculation): If the AUTO position is selected on either the fan or mode control, the system will automatically control the air inlet to supply fresh outside air or recirculate the interior air to cool the car faster. The indicator light on the recirculation button will light whenever the system switches to recirculation. You may force outside air by pressing the button when the light is lit. The next time AUTO fan or mode is selected, the air inlet will reset back to AUTO operation.


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Manual Operation 9(Fan): Turn the left knob either to the left or right to adjust the fan speed. Turning this control completely counterclockwise will turn on the automatic fan operation. If the airflow seems low when the fan speed is at the highest setting, the passenger compartment air filter may need to be replaced. For more information, see Passenger Compartment Air Filter on page 3-31 and Scheduled Maintenance on page 6-4. 9(Off): Turn the left control to this position to turn the entire climate control system off. To change the current mode, select one of the following positions using the right control: F(Vent): Turn the control to this mode to direct air to the instrument panel outlets. *(Bi-Level): Turn the control to this mode to direct approximately half of the air to the instrument panel outlets and most of the remaining air to the floor outlets. In automatic operation, cooler air is directed to the upper outlets and warmer air to the floor outlets.


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7 (Floor): Turn the control to this mode to direct most of the air to the floor outlets with some air directed to the side window outlets and the windshield.


The mode control can also be used to select the floor/defog mode. Information on defogging and defrosting can be found later in this section. ? (Recirculation): Press this button to keep outside air from coming in the vehicle. It can be used to prevent outside air and odors from entering your vehicle or to help cool the air inside your vehicle more quickly. Press this button to turn the recirculation mode on or off. When the button is pressed, an indicator light will come on. «ª (Driver’s Temperature Controls): Press these buttons next to the fan control to manually increase or decrease the temperature inside your vehicle. «ª (Passenger’s Temperature Controls): Press these buttons next to the mode control to manually increase or decrease the temperature for the front passenger. If the passenger’s climate control system is off, pressing one of these buttons will turn it on.


PASS (Passenger’s Climate Control): Press this button to turn the passenger’s climate control systems on or off.


If the PASS button is pressed to turn the passenger temperature setting off, the driver’s temperature setting will control the temperature for the entire vehicle. : (Outside Air): This mode allows outside air to enter the vehicle. It can be used to prevent the inside from becoming too dry. Press this button to turn outside air on. Pressing the recirculation button will cancel this mode. When the button is pressed, an indicator light will turn on. # (Air Conditioning): Press this button to override the automatic system and turn the air conditioning system on or off. When in AUTO, the air conditioning compressor will come on automatically, as necessary. The air conditioning system removes moisture from the air, so you may notice a small amount of water dripping underneath your vehicle while idling or after turning off the engine. This is normal.


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Sensors


The solar sensor, located in the defrost grille, middle of the instrument panel, monitors the solar radiation. Do not cover the solar sensor or the system will not work properly. There is also an interior temperature sensor located next to the steering wheel that measures the temperature of the air inside your vehicle.


There is also an exterior temperature sensor located behind the front grille. This sensor reads the outside air temperature and helps maintain the temperature inside the vehicle. Any cover on the front of the vehicle could cause a false reading in the displayed temperature. In order to prevent false temperature readings at startup, the displayed temperature will not change until the following occurs: (cid:127) Vehicle speed is above 10 mph (16 k/mh) for


5 minutes.


(cid:127) Vehicle speed is above 32 mph (51 k/mh) for


2 and a half minutes.


The climate control system uses the information from these sensors to maintain your comfort setting by adjusting the outlet temperature, fan speed, and the air delivery mode. The system may also supply cooler air to the side of the vehicle facing the sun. The recirculation mode will also be used as needed to maintain cool outlet temperatures.


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Defogging and Defrosting Fog on the inside of windows is a result of high humidity (moisture) condensing on the cool window glass. This can be minimized if the climate control system is used properly. There are two modes to clear fog from your windshield, defog and defrost. W (Floor/Defog): Use this mode to clear the windows of fog or moisture and to warm the passengers. Turning the control to this mode directs approximately half of the air to the floor outlets and the remaining air is directed to the side window outlets and to the windshield. When you select this mode, the system turns off recirculation and runs the air-conditioning compressor unless the outside temperature is at or below freezing. The recirculation mode cannot be selected while in the floor/defog mode. 0(Defrost): Use this mode to remove fog or frost from the windshield more quickly. Turning the control to this mode directs most of the air to the windshield and the side window outlets. In this mode, the system will automatically turn off recirculation and run the air-conditioning compressor, unless the outside temperature is at or below freezing. Recirculation cannot be selected while in the defrost mode. Do not drive the vehicle until all the windows are clear.


Rear Window Defogger The rear window defogger uses a warming grid to remove fog or frost from the rear window. < (Rear Defogger): Press this button to turn the rear window defogger on or off. An indicator light below the button will come on to let you know that the rear window defogger is activated. Be sure to clear as much snow from the rear window as possible. The rear window defogger will only work when the ignition is in C (RUN). The rear window defogger will stay on for approximately 20 minutes after the button is pressed if you are traveling at slower vehicle speeds. At higher vehicle speeds the rear window defogger may stay on continuously. If turned on again, the defogger will only run for approximately 10 minutes before turning off. The defogger can be turned off by pressing the button again, by turning the ignition to B (ACCESSORY) or C (RUN), or by turning off the engine. The heated outside rearview mirrors will heat to help clear fog or frost from the surface of the mirror when the rear window defogger is on. See Outside Automatic Dimming Heated Mirror on page 2-37 for more information. Notice: Do not use a razor blade or sharp object to clear the inside rear window. Do not adhere anything to the defogger grid lines in the rear glass. These actions may damage the rear defogger. Repairs would not be covered by your warranty.


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Passenger Compartment Air Filter The passenger compartment air filter traps most of the pollen from the air entering your vehicle. Like your vehicle’s engine air cleaner/filter, it may need to be changed periodically. For how often to change the passenger compartment air filter, see Scheduled Maintenance on page 6-4.


Outlet Adjustment Use the levers located in the middle of the front outlets to change the direction of the airflow and use the shutoff wheels to adjust the amount of airflow. You can adjust the rear seat outlet direction of the airflow using the lever in the center of each outlet. Operation Tips (cid:127) Clear away any ice, snow or leaves from the air


inlets at the base of the windshield that may block the flow of air into your vehicle.


(cid:127) Use of non-GM approved hood deflectors may adversely affect the performance of the system.


(cid:127) Keep the path under the front seats clear of objects to help circulate the air inside of your vehicle more effectively.


The access panel for the passenger compartment air filter is located under the hood near the windshield, on the passenger’s side of the vehicle.


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To access the passenger compartment air filter, do the following: 1. Press the tabs back and left to remove the cover.


2. Then, insert a tool behind the push pin located on


the inboard side of the air filter compartment to carefully pry the pin out.


3. To remove the air filter, insert a tool between the


air filter and the compartment wall on the outboard side of the vehicle. Then, push in to flatten the pin holding the air filter in place. Gently remove the air filter and any loose debris that may be inside the air filter compartment.


4. Insert the new air filter by pushing until you hear a


click. Then, reinstall the push pin and snap the cover into place.


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Warning Lights, Gages, and Indicators This part describes the warning lights and gages that may be on your vehicle. The pictures will help you locate them. Warning lights and gages can signal that something is wrong before it becomes serious enough to cause an expensive repair or replacement. Paying attention to your warning lights and gages could also save you or others from injury. Warning lights come on when there may be or is a problem with one of your vehicle’s functions. As you will see in the details on the next few pages, some warning lights come on briefly when you start the engine just to let you know they are working. If you are familiar with this section, you should not be alarmed when this happens.


Gages can indicate when there may be or is a problem with one of your vehicle’s functions. Often gages and warning lights work together to let you know when there is a problem with your vehicle. When one of the warning lights comes on and stays on when you are driving, or when one of the gages shows there may be a problem, check the section that tells you what to do about it. Please follow this manual’s advice. Waiting to do repairs can be costly — and even dangerous. So please get to know your warning lights and gages. They are a big help. Your vehicle may also have a DIC that works along with the warning lights and gages. See Driver Information Center (DIC) on page 3-50.


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Instrument Panel Cluster Your instrument panel cluster is designed to let you know at a glance how your vehicle is running. You will know how fast you are going, how much fuel you have, and many other things you will need to drive safely and economically. Your vehicle has this cluster or one very similar to it. It includes indicator warning lights and gages that are explained on the following pages. Be sure to read about them.


United States shown, Canada similar


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Speedometer and Odometer Your speedometer lets you see your speed in both miles per hour (mph) and kilometers per hour (km/h). Your odometer shows how far your vehicle has been driven, in either miles or kilometers. Your vehicle has a tamper resistant odometer. You may wonder what happens if your vehicle needs a new odometer installed. If the new one can be set to the mileage total of the old odometer, then it must be. But if it cannot, then it is set at zero and a label must be put on the driver’s door to show the old mileage reading when the new odometer was installed.


Trip Odometer A trip odometer can tell you how far you have driven since you last set it to zero. See Driver Information Center (DIC) on page 3-50 for information on resetting the trip odometer.


Tachometer The tachometer tells you how fast the engine is running. It displays engine speed in thousands of revolutions per minute (rpm).


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Safety Belt Reminder Light When the key is turned to RUN or START, a chime will be provided for several seconds to remind people to buckle their safety belts. The driver safety belt light will also be provided and stay on for several seconds, then it will flash for several more. You should buckle your seat belt.


This chime and light will be repeated if the driver remains unbuckled and the vehicle is in motion.


If the driver’s belt is buckled, neither the chime nor the light will be provided.


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Passenger Safety Belt Reminder Light Several seconds after the key is turned to RUN or START, a chime will sound for several seconds to remind the front passenger to buckle their safety belt. This would only occur if the passenger airbag is enabled. See Passenger Sensing System on page 1-63
for more information. The passenger safety belt light will also come on and stay on for several seconds, then it will flash for several more.


This chime and light will be repeated if the passenger remains unbuckled and the vehicle is in motion.


Airbag Readiness Light There is an airbag readiness light on the instrument panel, which shows the airbag symbol. The system checks the airbag’s electrical system for malfunctions. The light tells you if there is an electrical problem. The system check includes the airbag sensors, the airbag modules, the wiring and the diagnostic module. For more information on the airbag system, see Airbag System on page 1-52.


This light will come on when you start your vehicle, and it will flash for a few seconds. Then the light should go out. This means the system is ready.


If the passenger’s safety belt is buckled, neither the chime nor the light will come on.


If the airbag readiness light stays on after you start the vehicle or comes on when you are driving, your airbag system may not work properly. Have your vehicle serviced right away.


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{CAUTION:


If the airbag readiness light stays on after you start your vehicle, it means the airbag system may not be working properly. The airbags in your vehicle may not inflate in a crash, or they could even inflate without a crash. To help avoid injury to yourself or others, have your vehicle serviced right away if the airbag readiness light stays on after you start your vehicle.


The airbag readiness light should flash for a few seconds when you turn the ignition key to RUN. If the light does not come on then, have it fixed so it will be ready to warn you if there is a problem. If there is a problem with the airbag system in your vehicle, the Service airbag message will appear on the DIC display. See DIC Warnings and Messages on page 3-56 for more information.


Passenger Airbag Status Indicator Your vehicle has the passenger sensing system. Your overhead console has a passenger airbag status indicator.


United States


Canada


When the ignition key is turned to RUN or START, the passenger airbag status indicator will light ON and OFF, or the symbol for on and off, for several seconds as a system check. Then, after several more seconds, the status indicator will light either ON or OFF, or either the on or off symbol to let you know the status of the right front passenger’s frontal airbag and seat-mounted side impact airbag.


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If the word ON or the on symbol is lit on the passenger airbag status indicator, it means that the right front passenger’s frontal airbag and seat-mounted side impact airbag are enabled (may inflate).


Your vehicle has a rear seat that will accommodate a rear-facing child restraint. A label on your sun visor says, “Never put a rear-facing child seat in the front.” This is because the risk to the rear-facing child is so great, if the airbag deploys.


{CAUTION:


If the on indicator comes on when you have a rear-facing child restraint installed in the right front passenger’s seat, it means that the passenger sensing system has not turned off the passenger’s frontal airbag and seat-mounted side impact airbag. A child in a rear-facing child restraint can be seriously injured or killed if the right front passenger’s airbag inflates. This is because the back of the rear-facing child restraint would be very close to the inflating airbag. Do not use a rear-facing child restraint in the right front passenger’s seat if the airbag is turned on.


{CAUTION:


Even though the passenger sensing system is designed to turn off the passenger’s frontal airbag and seat-mounted side impact airbag if the system detects a rear-facing child restraint, no system is fail-safe, and no one can guarantee that an airbag will not deploy under some unusual circumstance, even though it is turned off. We recommend that rear-facing child restraints be secured in the rear seat, even if the airbag is off.


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Charging System Light


When you turn the key to RUN or START, this light will come on briefly to show that the generator and battery charging systems are working properly.


If this light stays on, your vehicle needs service. You should take your vehicle to the dealer at once. To save your battery until you get there, turn off all accessories.


If the word OFF or the off symbol is lit on the airbag status indicator, it means that the passenger sensing system has turned off the right front passenger’s frontal airbag and seat-mounted side impact airbag. See Passenger Sensing System on page 1-63 for more on this, including important safety information. If, after several seconds, all status indicator lights remain on, or if there are no lights at all, there may be a problem with the lights or the passenger sensing system. See your dealer for service.


{CAUTION:


If the off indicator and the airbag readiness light ever come on together, it means that something may be wrong with the airbag system. If this ever happens, have the vehicle serviced promptly, because an adult-size person sitting in the right front passenger seat may not have the protection of the airbags. See Airbag Readiness Light on page 3-36.


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Brake System Warning Light Your vehicle’s hydraulic brake system is divided into two parts. If one part is not working, the other part can still work and stop you. For good braking, though, you need both parts working well. If the warning light comes on, there is a brake problem. Have your brake system inspected right away.


United States


Canada


This light should come on briefly when you turn the ignition key to RUN. If it does not come on then, have it fixed so it will be ready to warn you if there’s a problem.


When the ignition is on, the brake system warning light will also come on when you set your parking brake. The light will stay on if your parking brake does not release fully. If it stays on after your parking brake is fully released, it means you have a brake problem. If the light comes on while you are driving, pull off the road and stop carefully. You may notice that the pedal is harder to push, or the pedal may go closer to the floor. It may take longer to stop. If the light is still on, have the vehicle towed for service. See Towing Your Vehicle on page 4-34.


{CAUTION:


Your brake system may not be working properly if the brake system warning light is on. Driving with the brake system warning light on can lead to an accident. If the light is still on after you have pulled off the road and stopped carefully, have the vehicle towed for service.


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Anti-Lock Brake System Warning Light


Traction Control System (TCS) Warning Light


With the anti-lock brake system, the light(s) will come on when your engine is started and may stay on for several seconds. That’s normal.


This warning light should come on briefly when the engine is started.


If the light stays on, turn the ignition to OFF. Or, if the light comes on when you’re driving, stop as soon as possible and turn the ignition off. Then start the engine again to reset the system. If the light still stays on, or comes on again while you’re driving, your vehicle needs service. If the regular brake system warning light isn’t on, you still have brakes, but you don’t have anti-lock brakes. If the regular brake system warning light is also on, you don’t have anti-lock brakes and there’s a problem with your regular brakes. See Brake System Warning Light on page 3-40. The anti-lock brake system warning light will come on briefly when you turn the ignition key to RUN. This is normal. If the light doesn’t come on then, have it fixed so it will be ready to warn you if there is a problem.


If the warning light does not come on then, have it fixed so it will be ready to warn you if there is a problem. If it stays on, or comes on when you are driving a SERVICE TRACTION CONTROL message will appear in the Driver Information Center (DIC). This indicates that there may be a problem with your traction control system and your vehicle may need service. When this warning light is on and the SERVICE TRACTION CONTROL message appears on the DIC, the system will not limit wheel spin. Adjust your driving accordingly.


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If the traction control system is manually turned off, this light will come on and the TRACTION CONTROL OFF message will appear on the DIC. When the system is active, the light will flash while the system is limiting wheel spin or assisting you in controlling the vehicle. You may also feel or hear the system working. This is normal. See Traction Control System (TCS) on page 4-9 and DIC Warnings and Messages on page 3-56 for more information. StabiliTrak® Indicator Light


This warning light should come on briefly when the engine is started.


This light may come on after you first start to drive and the STABILITRAK NOT READY message will appear in the Driver Information Center (DIC). See StabiliTrak® System on page 4-10 for more information. If the light stays on, or comes on when you are driving a SERVICE STABILITRAK message will appear in the DIC. This indicates that there may be a problem with the StabiliTrak® system and your vehicle may need service. When this warning light is on and the SERVICE STABILITRAK message appears on the DIC, the system will not assist you in controlling the vehicle. Adjust your driving accordingly. When the system is active, the light will flash while the system is assisting you in controlling the vehicle. You may also feel or hear the system working. This is normal. See StabiliTrak® System on page 4-10 and DIC Warnings and Messages on page 3-56 for more information.


If the warning light does not come on then, have it fixed so it will be ready to warn you if there is a problem.


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Engine Coolant Temperature Warning Light


Engine Coolant Temperature Gage


The engine coolant temperature warning light will come on when the engine has overheated.


If this happens you should pull over and turn off the engine as soon as possible. See Engine Overheating on page 5-27 for more information. Notice: Driving with the engine coolant temperature warning light on could cause your vehicle to overheat. See Engine Overheating on page 5-27. Your vehicle could be damaged, and it might not be covered by your warranty. Never drive with the engine coolant temperature warning light on. This light will also come on when starting your vehicle. If it doesn’t, have your vehicle serviced.


United States


Canada


This gage shows the engine coolant temperature. If the pointer moves towards the H (United States) or shaded in thermostat symbol area (Canada), the engine is too hot. A temperature indicator light will turn on and a chime will sound. If you have been operating your vehicle under normal driving conditions, and the temperature indicator light comes on, you should pull off the road, stop your vehicle and turn off the engine as soon as possible.


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Tire Pressure Light


This light should come on briefly as you start the engine. It will then come on only when a flat or low tire pressure condition exists.


See Check Tire Pressure System on page 5-63 for more information.


Malfunction Indicator Lamp Check Engine Light


Your vehicle is equipped with a computer which monitors operation of the fuel, ignition, and emission control systems.


This system is called OBD II (On-Board Diagnostics-Second Generation) and is intended to assure that emissions are at acceptable levels for the


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If you keep driving your vehicle with this


life of the vehicle, helping to produce a cleaner environment. The check engine light comes on to indicate that there is a problem and service is required. Malfunctions often will be indicated by the system before any problem is apparent. This may prevent more serious damage to your vehicle. This system is also designed to assist your service technician in correctly diagnosing any malfunction. Notice: light on, after awhile, your emission controls may not work as well, your fuel economy may not be as good, and your engine may not run as smoothly. This could lead to costly repairs that may not be covered by your warranty. Notice: Modifications made to the engine, transaxle, exhaust, intake, or fuel system of your vehicle or the replacement of the original tires with other than those of the same Tire Performance Criteria (TPC) can affect your vehicle’s emission controls and may cause this light to come on. Modifications to these systems could lead to costly repairs not covered by your warranty. This may also result in a failure to pass a required Emission Inspection/Maintenance test. See Accessories and Modifications on page 5-3.


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This light should come on, as a check to show you it is working, when the ignition is on and the engine is not running. If the light does not come on, have it repaired. This light will also come on during a malfunction in one of two ways:


Light Flashing — A misfire condition has been detected. A misfire increases vehicle emissions and may damage the emission control system on your vehicle. Diagnosis and service may be required. Light On Steady — An emission control system malfunction has been detected on your vehicle. Diagnosis and service may be required.


If the Light Is Flashing The following may prevent more serious damage to your vehicle: (cid:127) Reducing vehicle speed (cid:127) Avoiding hard accelerations (cid:127) Avoiding steep uphill grades


If you are towing a trailer, reduce the amount of cargo being hauled as soon as it is possible If the light stops flashing and remains on steady, see “If the Light Is On Steady” following.


If the light continues to flash, when it is safe to do so, stop the vehicle. Find a safe place to park your vehicle. Turn the key off, wait at least 10 seconds and restart the engine. If the light remains on steady, see “If the Light Is On Steady” following. If the light is still flashing, follow the previous steps, and see your dealer for service as soon as possible. If the Light Is On Steady You may be able to correct the emission system malfunction by considering the following: Did you recently put fuel into your vehicle? If so, reinstall the fuel cap, making sure to fully install the cap. See Filling the Tank on page 5-8. The diagnostic system can determine if the fuel cap has been left off or improperly installed. A loose or missing fuel cap will allow fuel to evaporate into the atmosphere. A few driving trips with the cap properly installed should turn the light off. Did you just drive through a deep puddle of water? If so, your electrical system may be wet. The condition will usually be corrected when the electrical system dries out. A few driving trips should turn the light off.


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(cid:127) (cid:127) (cid:127) Have you recently changed brands of fuel? If so, be sure to fuel your vehicle with quality fuel. See Gasoline Octane on page 5-5. Poor fuel quality will cause your engine not to run as efficiently as designed. You may notice this as stalling after start-up, stalling when you put the vehicle into gear, misfiring, hesitation on acceleration, or stumbling on acceleration. (These conditions may go away once the engine is warmed up.) This will be detected by the system and cause the light to turn on. If you experience one or more of these conditions, change the fuel brand you use. It will require at least one full tank of the proper fuel to turn the light off. If none of the above steps have made the light turn off, your dealer can check the vehicle. Your dealer has the proper test equipment and diagnostic tools to fix any mechanical or electrical problems that may have developed.


Emissions Inspection and Maintenance Programs Some state/provincial and local governments have or may begin programs to inspect the emission control equipment on your vehicle. Failure to pass this inspection could prevent you from getting a vehicle registration. Here are some things you need to know in order to help your vehicle pass an inspection: Your vehicle will not pass this inspection if the check engine light is on or not working properly. Your vehicle will not pass this inspection if the OBD (on-board diagnostic) system determines that critical emission control systems have not been completely diagnosed by the system. The vehicle would be considered not ready for inspection. This can happen if you have recently replaced your battery or if your battery has run down. The diagnostic system is designed to evaluate critical emission control systems during normal driving. This may take several days of routine driving. If you have done this and your vehicle still does not pass the inspection for lack of OBD system readiness, your GM dealer can prepare the vehicle for inspection.


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Oil Pressure Light


{CAUTION:


Do not keep driving if the oil pressure is low. If you do, your engine can become so hot that it catches fire. You or others could be burned. Check your oil as soon as possible and have your vehicle serviced.


Notice: Lack of proper engine oil maintenance may damage the engine. The repairs would not be covered by your warranty. Always follow the maintenance schedule in this manual for changing engine oil.


This light tells you if there could be a problem with your engine oil pressure.


The light goes on when you turn your key to RUN or START. It goes off once you start your engine. That is a check to be sure the light works. If it does not come on, be sure to have it fixed so it will be there to warn you if something goes wrong. When the light comes on and stays on, it means that oil is not flowing through your engine properly. You could be low on oil and you might have some other system problem.


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Security Light


Cruise Control Light


For information regarding this light, see PASS-Key® III+ Operation on page 2-20.


This light comes on whenever you set your cruise control.


Fog Lamp Light


The fog lamps light will come on when the fog lamps are in use.


The light will go out when the cruise control is turned off. See Cruise Control on page 3-11 for more information. Highbeam On Light


This light will come on when the high-beam headlamps are in use.


The light will go out when the fog lamps are turned off. See Fog Lamps on page 3-16 for more information.


See Headlamp High/Low-Beam Changer on page 3-8.


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Fuel Gage


United States


Canada


The fuel gage shows about how much fuel is in your tank. It works only when the ignition is on. When the indicator moves to the edge of the low fuel warning band, the low fuel warning light will come on and a chime will sound. You still have a little fuel left, but you need to get more fuel right away.


Here are some things that some owners ask about. None of these show a problem with your fuel gage: (cid:127) At the service station, the gas pump shuts off before


the gage reads full. It takes more (or less) fuel to fill up than the gage indicated. For example, the gage may have indicated half full, but it took more (or less) than half the tank’s capacity to fill it. The gage moves up a little when you turn a corner, speed up or make a hard stop. The gage does not go back to empty when you turn off the ignition.


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(cid:127) (cid:127) (cid:127) Driver Information Center (DIC) Your vehicle has a Driver Information Center (DIC). All messages will appear in the DIC display located below the speedometer in the instrument panel cluster. The DIC buttons are located on the instrument panel, to the left of the instrument panel cluster. The DIC comes on when the ignition is on. After a short delay, the DIC will display the information that was last displayed before the engine was turned off. The DIC displays trip, fuel, and vehicle system information, and warning messages if a system problem is detected. The bottom line of the DIC shows the shift lever position indicator. See Automatic Transaxle Operation on page 2-25 for more information. If your vehicle’s DIC has these features, the compass direction and the outside air temperature may also display on the DIC when viewing the trip and fuel information. The compass direction appears on the top right corner of the DIC display. The outside air temperature automatically appears in the bottom right corner of the DIC display. If there is a problem with the system that controls the temperature display, the numbers will be replaced with dashes. If this occurs, have the vehicle serviced by your GM dealer. The DIC also allows some features to be customized. See DIC Vehicle Customization on page 3-65 for more information.


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DIC Controls and Displays The DIC has different displays which can be accessed by pressing the DIC buttons located on the instrument panel, to the left of the instrument panel cluster. DIC Buttons The buttons are the trip/fuel, vehicle information, customization, and set/reset buttons. The button functions are detailed in the following pages.


3 (Trip/Fuel): Press this button to display the odometer, trip odometers, fuel range, average economy, instantaneous economy, and average speed.


T (Vehicle Information): Press this button to display the oil life, units, park assist on vehicles with this feature, tire pressure system reset, compass zone and compass calibration on vehicles with this feature, and remote keyless entry transmitter programming.


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U (Customization): Press this button to customize the feature settings on your vehicle. See DIC Vehicle Customization on page 3-65 for more information. V (Set/Reset): Press this button to set or reset certain functions and to turn off or acknowledge messages on the DIC.


Trip/Fuel Menu Items 3 (Trip/Fuel): Press this button to scroll through the following menu items: Odometer Press the trip/fuel button until ODOMETER displays. This display shows the distance the vehicle has been driven in either miles (mi) or kilometers (km). Trip A and Trip B Press the trip/fuel button until TRIP A or TRIP B displays. This display shows the current distance traveled in either miles (mi) or kilometers (km) since the last reset for each trip odometer. Both trip odometers can be used at the same time. Each trip odometer can be reset to zero separately by pressing the set/reset button while the desired trip odometer is displayed.


2006 - Buick Lucerne Owner Manual


The trip odometer has a feature called the retro-active reset. This can be used to set the trip odometer to the number of miles (kilometers) driven since the ignition was last turned on. This can be used if the trip odometer is not reset at the beginning of the trip. To use the retro-active reset feature, press and hold the set/reset button for at least two seconds. The trip odometer will display the number of miles (mi) or kilometers (km) driven since the ignition was last turned on and the vehicle was moving. Once the vehicle begins moving, the trip odometer will accumulate mileage. For example, if the vehicle was driven 5 miles (8 km) before it is started again, and then the retro-active reset feature is activated, the display will show 5 miles (8 km). As the vehicle begins moving, the display will then increase to 5.1 miles (8.2 km), 5.2 miles (8.4 km), etc. If the retro-active reset feature is activated after the vehicle is started, but before it begins moving, the display will show the number of miles (mi) or kilometers (km) that were driven during the last ignition cycle.


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Fuel Range Press the trip/fuel button until FUEL RANGE displays. This display shows the approximate number of remaining miles (mi) or kilometers (km) the vehicle can be driven without refueling. The fuel range estimate is based on an average of the vehicle’s fuel economy over recent driving history and the amount of fuel remaining in the fuel tank. This estimate will change if driving conditions change. For example, if driving in traffic and making frequent stops, this display may read one number, but if the vehicle is driven on a freeway, the number may change even though the same amount of fuel is in the fuel tank. This is because different driving conditions produce different fuel economies. Generally, freeway driving produces better fuel economy than city driving. If your vehicle is low on fuel, the FUEL LEVEL LOW message will be displayed. See “FUEL LEVEL LOW” under DIC Warnings and Messages on page 3-56
for more information. Average Economy Press the trip/fuel button until AVG ECONOMY displays. This display shows the approximate average miles per gallon (mpg) or liters per 100 kilometers (L/100 km).


This number is calculated based on the number of mpg (L/100 km) recorded since the last time this menu item was reset. To reset AVG ECONOMY, press and hold the set/reset button. The display will return to zero. Instantaneous Economy Press the trip/fuel button until INST ECONOMY displays. This display shows the current fuel economy at a particular moment and will change frequently as driving conditions change. This display shows the instantaneous fuel economy in miles per gallon (mpg) or liters per 100 kilometers (L/100 km). Unlike average economy, this screen cannot be reset. Average Speed Press the trip/fuel button until AVERAGE SPEED displays. This display shows the average speed of the vehicle in miles per hour (mph) or kilometers per hour (km/h). This average is calculated based on the various vehicle speeds recorded since the last reset of this value. To reset the value, press and hold the set/reset button. The display will return to zero. Blank Display This display shows no information.


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Vehicle Information Menu Items T (Vehicle Information): Press this button to scroll through the following menu items: Oil Life Press the vehicle information button until OIL LIFE REMAINING displays. This display shows an estimate of the oil’s remaining useful life. If you see 99% OIL LIFE REMAINING on the display, that means 99% of the current oil life remains. The engine oil life system will alert you to change your oil on a schedule consistent with your driving conditions. When the remaining oil life is low, the CHANGE ENGINE OIL SOON message will appear on the display. See “CHANGE ENGINE OIL SOON” under DIC Warnings and Messages on page 3-56. You should change your oil as soon as possible. See Engine Oil on page 5-15. In addition to the engine oil life system monitoring the oil life, additional maintenance is recommended in the Maintenance Schedule in this manual. See Scheduled Maintenance on page 6-4 for more information. Remember, you must reset the OIL LIFE yourself after each oil change. It will not reset itself. Also, be careful not to reset the OIL LIFE accidentally at any time other than when the oil has just been changed.


It cannot be reset accurately until the next oil change. To reset the engine oil life system, see Engine Oil Life System on page 5-18. Units Press the vehicle information button until UNITS displays. This display allows you to select between English or Metric units of measurement. Once in this display, press the set/reset button to select between ENGLISH or METRIC units. Park Assist If your vehicle has the Ultrasonic Rear Parking Assist (URPA) system, this display allows the system to be turned on or off. Press the vehicle information button until PARK ASSIST displays. Once in this display, press the set/reset button to select between ON or OFF. If you choose ON, the system will be turned on. If you choose OFF, the system will be turned off. The URPA system automatically turns back on after each vehicle start. When the URPA system is turned off and the vehicle is shifted out of PARK (P), the DIC will display the PARK ASSIST OFF message as a reminder that the system has been turned off. See DIC Warnings and Messages on page 3-56 and Ultrasonic Rear Parking Assist (URPA) on page 3-18 for more information.


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Reset Tire Pressure System Press the vehicle information button until PRESS V TO RESET TIRE SYSTEM displays. This display allows you to reset the tire pressure system. See Check Tire Pressure System on page 5-63 for more information. Once in this display, press the set/reset button to reset the system. The message TIRE PRESSURE SYSTEM RESET will display after the system has been reset. Compass Zone Your vehicle may have this feature. Under certain circumstances, such as during a long distance cross-country trip, it will be necessary to compensate for compass variance and reset the zone through the DIC. Compass variance is the difference between the earth’s magnetic north and true geographic north. If not adjusted to account for compass variance, the compass in the vehicle could give false readings. In order to do this, the compass must be set or calibrated to the variance zone in which the vehicle is traveling.


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To adjust for compass variance, use the following procedure: Compass Variance Procedure 1. Press the vehicle information button until PRESS


V TO CHANGE COMPASS ZONE displays.


2. Find the vehicle’s current location and variance


zone number on the map. Zones 1 through 15 are available.


3. Press the set/reset button to scroll through and


select the appropriate variance zone.


2006 - Buick Lucerne Owner Manual


Navigate to one of the trip/fuel menu screens to view the direction the vehicle is moving. This will be shown in the top right corner of the DIC display.


4. If you need to calibrate the compass, use the compass calibration procedure. See “Compass Calibration Procedure” following.


Compass Calibration The compass can be manually calibrated. Only calibrate the compass in a safe location where driving the vehicle in circles is not a problem. To calibrate the compass, use the following procedure: Compass Calibration Procedure 1. Before calibrating the compass, make sure the


compass zone is set to the variance zone in which the vehicle is traveling. See “Compass Variance Procedure” earlier in this section.


2. Press the vehicle information button until the


PRESS V TO CALIBRATE COMPASS screen is displayed.


3. Press the set/reset button to start the compass


calibration.


4. The DIC will display CALIBRATING: DRIVE IN


CIRCLES. Drive the vehicle in circles at less than 5 mph (8 km/h) to complete the calibration. The DIC will display CALIBRATION COMPLETE when the calibration is complete.


Remote Key This display allows you to match the remote keyless entry transmitter to your vehicle. To match a remote keyless entry transmitter to your vehicle, do the following: 1. Press the vehicle information button until PRESS


V TO RELEARN REMOTE KEY displays.


2. Press the set/reset button.


The message REMOTE KEY LEARNING ACTIVE will display.


3. Press and hold the lock and unlock buttons on the first transmitter at the same time for approximately 15 seconds. A chime will sound indicating that the transmitter is matched.


4. To match additional transmitters at this time,


repeat Step 3. Each vehicle can have a maximum of eight transmitters matched to it.


5. To exit the programming mode, you must cycle


the key to OFF.


Blank Display This display shows no information.


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AUTOMATIC LIGHT CONTROL OFF This message will display when the automatic headlamps are turned off. AUTOMATIC LIGHT CONTROL ON This message will display when the automatic headlamps are turned on. CHANGE ENGINE OIL SOON This message will display when service is required for the vehicle. See your GM dealer. See Engine Oil on page 5-15 and Scheduled Maintenance on page 6-4
for more information. Acknowledging the CHANGE ENGINE OIL SOON message will not reset the OIL LIFE REMAINING. That must be done at the OIL LIFE screen under the vehicle information menu. See “Oil Life” under DIC Controls and Displays on page 3-50 and Engine Oil Life System on page 5-18.


Customization Menu Items U (Customization): Press this button to enter the feature settings menu. This display allows you to customize the feature settings on your vehicle. See DIC Vehicle Customization on page 3-65 for more information.


DIC Warnings and Messages Messages are displayed on the DIC to notify the driver that the status of the vehicle has changed and that some action may be needed by the driver to correct the condition. Multiple messages may appear one after another. Some messages may not require immediate action, but you can press the set/reset button to acknowledge that you received the message and clear it from the DIC display. Pressing any of the DIC buttons will also acknowledge and clear any messages. Some messages cannot be cleared from the DIC display because they are more urgent. These messages require action before they can be cleared. You should take any messages that appear on the display seriously and remember that clearing the messages will only make the messages disappear, not correct the problem. The following are the possible messages that can be displayed and some information about them.


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CHECK TIRE PRESSURE This warning message and the tire pressure light on the instrument panel cluster will appear when the air pressure in one of the tires is too low or too high. Check the vehicle’s tire pressure as soon as possible, and fill or deflate the affected tire to the appropriate level. The correct tire inflation pressure should be set to those shown on the tire-loading information label on the vehicle. See Loading Your Vehicle on page 4-29 and Tire Pressure Light on page 3-44 for more information. This message is reset when it is acknowledged. However, you must also reset the tire pressure system. See “Reset Tire Pressure System” under DIC Controls and Displays on page 3-50 for more information. DRIVER DOOR OPEN This message will display when the driver’s door is not closed properly. When this message appears, you should make sure that the driver’s door is closed completely.


ENGINE HOT A/C (Air Conditioning) OFF This message will display when the engine coolant becomes hotter than the normal operating temperature. To avoid added strain on a hot engine, the air conditioning compressor is automatically turned off. When the coolant temperature returns to normal, the A/C operation will automatically resume. You can continue to drive your vehicle. If this message continues to appear, have the system repaired by your GM dealer as soon as possible to avoid compressor damage. ENGINE OIL LOW ADD OIL This message will display when the vehicle’s engine oil is low. Fill the oil to the proper level as soon as possible. See Engine Compartment Overview on page 5-12 for the engine oil fill location. Also, see Engine Oil on page 5-15 for information on the kind of oil to use and the proper oil level.


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If you drive your vehicle while the engine is


ENGINE OVERHEATED IDLE ENGINE Notice: overheating, severe engine damage may occur. If an overheat warning appears on the instrument panel cluster and/or DIC, stop the vehicle as soon as possible. Do not increase the engine speed above normal idling speed. See Engine Overheating on page 5-27 for more information. This message will display when the engine coolant temperature is too hot. Stop and allow the vehicle to idle until it cools down. ENGINE OVERHEATED STOP ENGINE Notice: If you drive your vehicle while the engine is overheating, severe engine damage may occur. If an overheat warning appears on the instrument panel cluster and/or DIC, stop the vehicle as soon as possible. Do not increase the engine speed above normal idling speed. See Engine Overheating on page 5-27 for more information. This message will display along with a continuous chime when the engine has overheated. Stop and turn the engine off immediately to avoid severe engine damage. See Engine Overheating on page 5-27.


ENGINE POWER IS REDUCED This message will display when the vehicle’s engine power is reduced. Reduced engine power can affect the vehicle’s ability to accelerate. If this message is on, but there is no reduction in performance, proceed to your destination. The performance may be reduced the next time the vehicle is driven. The vehicle may be driven at a reduced speed while this message is on, but acceleration and speed may be reduced. Anytime this message stays on, the vehicle should be taken to your GM dealer for service as soon as possible. ERROR This message will display when viewing the odometer or trip odometers if there is a problem with the instrument panel cluster. See your GM dealer for service. FUEL LEVEL LOW This message will display when your vehicle is low on fuel. You should refill the fuel tank as soon as possible. See Fuel Gage on page 3-49 and Filling the Tank on page 5-8 for more information.


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HEATED WASH (Washer) FLUID SYSTEM OFF This message will display when you manually turn off the heated windshield washer fluid system or when the system automatically turns off. See “Heated Washer Fluid” under Windshield Washer on page 3-10 for more information. HEATING WASH (Washer) FLUID WASH (Washer) WIPES PENDING This message will display when you turn on the heated windshield washer fluid system. See “Heated Washer Fluid” under Windshield Washer on page 3-10 for more information. HOOD OPEN If your vehicle has the remote start feature, this message will display when the hood is not closed properly. When this message appears, you should make sure that the hood is closed completely. See Hood Release on page 5-11. ICE POSSIBLE DRIVE WITH CARE This message will display when the outside air temperature is cold enough to create icy road conditions. Adjust your driving accordingly.


If you drive your vehicle while the engine


LEFT REAR DOOR OPEN This message will display when the driver’s side rear door is not closed properly. When this message appears, you should make sure that the passenger’s door is closed completely. OIL PRESSURE LOW STOP ENGINE Notice: oil pressure is low, severe engine damage may occur. If a low oil pressure warning appears on the instrument panel cluster and/or DIC, stop the vehicle as soon as possible. Do not drive the vehicle until the cause of the low oil pressure is corrected. See Engine Oil on page 5-15 for more information. This message will display when the vehicle’s engine oil pressure is low. The oil pressure light will also appear on the instrument panel cluster. See Oil Pressure Light on page 3-47. Stop the vehicle immediately, as engine damage can

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