2005 Jeep Liberty Owners Manual

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inside a vehicle. 232 STARTING AND OPERATING The following indicators should be used to ensure that you have engaged the transmission shift lever into the P (Park) position: • When shifting into P (Park), depress the button on the shift lever and firmly move the lever all the way forward until it stops. • Look at the shift indicator window on the console to • When engaged in P (Park), you will not be able to move the shifter rearward without depressing the shift lever button. ensure it is in the P (Park) position. R (Reverse) For moving the vehicle rearward. Always stop before moving the lever to R (Reverse), except when rocking the vehicle. N (Neutral) Engine may be started in this position. NOTE: Towing the vehicle, coasting, or otherwise driv- ing with the transmission in N (Neutral) can cause severe damage to the transmission. WARNING! CAUTION! Before moving the shift lever out of P (Park), you must turn the ignition from LOCK to ON so the steering wheel and shift lever are released. Otherwise, damage to the steering column or shifter could result. Do not coast in N (Neutral) and never turn off the ignition to coast down a hill. These are unsafe practices that limit your response to changing traffic or road conditions. You might lose control of the vehicle. Overdrive (O/D) For most city and highway driving. The transmission contains an electronically controlled Overdrive, and will automatically shift from D (Drive) to O/D (Overdrive) if the following conditions are present: • The transmission selector is in D (Drive). • The O/D OFF button has not been activated. • Vehicle speed is above approximately 30 mph (48 • Transmission has reached normal operating tempera- km/h). ture. When frequent transmission shifting occurs while using Overdrive, such as when operating the vehicle under heavy load conditions (for example, in hilly terrain, strong head winds, or trailer towing), turning off over- drive will improve performance and extend transmission life by reducing excessive shifting and heat buildup. STARTING AND OPERATING 233 O/D Off Button Overdrive can be locked out by pressing the O/D OFF button located on side of the gearshift lever. The O/D OFF indicator light will illuminate to show that the switch has been activated. When the indicator light is on, Overdrive is locked out. Pressing the switch a second time restores the Overdrive function. The lockout feature is useful when towing a trailer or carrying a heavy load. 234 STARTING AND OPERATING If the vehicle is started in cold outside tempera- NOTE: tures, shifts into Overdrive may be delayed. Normal Overdrive and shifting operation will resume when the temperature of the transmission reaches the appropriate temperature. Refer to the “Note” under “Torque Con- verter Clutch” later in this section. If the transmission temperature gets too hot, the trans- mission may downshift out of Overdrive or engage overdrive at higher vehicle speeds until the transmission cools down. After cooldown, Overdrive will resume normal operation. 2 (Second) For moderate grades and to assist braking on dry pave- ment or in mud and snow. Begins at a stop in low gear with automatic upshift to 2nd gear. Will not shift to 3rd. 1 (First) For hard pulling at low speeds in mud, sand, snow, or on steep grades. Begins and stays in low gear with no upshift. Provides engine compression braking at low speeds. CAUTION! • Never press on the accelerator pedal with the engine running, vehicle in gear, and the brakes applied. Always apply the brakes when stopped on a incline. Failure to follow these instructions can cause overheating and damage to the trans- mission. • When “rocking” a stuck vehicle by moving be- tween “First” and R (Reverse), do not spin the wheels faster than 15 mph (24 km/h), or drivetrain damage may result. the condition. This may result Over Temperature Mode The transmission electronics constantly monitor the transmission oil temperature. If the transmission gets too hot, the transmission will change the way it shifts to help control in a slightly different feeling or response during normal operation in D (Drive) position. If the transmission becomes hot enough the TRANS TEMP warning light in the instru- ment cluster will come on. After the transmission cools down, it will return to normal operation. Torque Converter Clutch A feature designed to improve fuel economy has been added to the automatic transmission of this vehicle. A clutch within the torque converter engages automatically at calibrated speeds. This may result in a slightly differ- ent feeling or response during normal operation in high gear. When the vehicle speed drops or during accelera- tion, the clutch automatically and smoothly disengages. STARTING AND OPERATING 235 NOTE: • The torque converter clutch (TCC) will not engage until the transmission fluid and engine coolant are warm (usually after 1–3 miles (1.6–4.8 km) of driving) and the vehicle speed is above approximately 30 mph (48 km/h). To understand the difference in operation, drive the vehicle so that TCC engagement conditions are correct, and then press and release the “O/D OFF” button once to disengage the TCC. Wait a few seconds, and then press and release the “O/D OFF” button again to engage the TCC. You will notice that the engine runs at a higher RPM when driving at vehicle speeds above approximately 30 mph (48 km/h) with the TCC not engaged. This is a normal condition. • If the vehicle has not been driven for several days, the first few seconds of operation after shifting the trans- mission into gear may seem sluggish. This is due to the transmission fluid partially draining from the torque converter into the transmission. This is considered a 236 STARTING AND OPERATING normal condition and will not cause damage to the transmission. The torque converter will refill within 5 seconds of shifting from P (Park) into any other gear position. Rocking the Vehicle If the vehicle becomes stuck in snow, sand, or mud, it can often be moved by a rocking motion. Move the gear selector rhythmically between “First” and R (Reverse), while applying slight pressure to the accelerator. The least amount of accelerator pedal pressure to main- tain the rocking motion without spinning the wheels or racing the engine is most effective. Racing the engine or spinning the wheels, due to the frustration of not freeing the vehicle, may lead to transmission overheating and failure. Allow the engine to idle with the transmission selector in N (Neutral) for at least one minute after every five rocking-motion cycles. This will minimize overheat- ing and reduce the risk of transmission failure during prolonged efforts to free a stuck vehicle. CAUTION! When “rocking” a stuck vehicle by moving between “First” and R (Reverse), do not spin the wheels faster than 15 mph (24 km/h), or drivetrain damage may result. FOUR-WHEEL DRIVE OPERATION Command-Trac姞 Operating Information/Precautions The Command-Trac威 transfer case provides 4 mode positions - 2 (rear) wheel drive high range, 4-wheel drive high range, neutral, and 4-wheel drive low range. This transfer case is intended to be driven in the 2-wheel drive position (2H) for normal street and highway con- ditions such as dry hard surfaced roads. When additional traction is required the transfer case 4H and 4L positions can be used to lock the front and rear driveshafts together and force the front and rear wheels to rotate at the same speed. This is accomplished by simply moving the shift lever to these positions. The 4H and 4L positions are intended for loose, slippery road surfaces only. Driving in the 4H and 4L positions on dry hard surfaced roads may cause increased tire wear and damage to the driveline components. The PART TIME indicator light, located in the instrument cluster, illuminates when the transfer case is shifted to the 4H position. The 4 LO MODE indicator light, located in the instru- ment cluster, illuminates when the transfer case is shifted to the 4L position. There is no light for the 2H or N (Neutral) positions. STARTING AND OPERATING 237 CAUTION! • Do not attempt to make a shift while only the front or rear wheels are spinning. The Command- Trac transfer case is not equipped with a synchro- nizer and therefore the front and rear driveshaft speeds must be equal for the shift to take place. Shifting while only the front or rear wheels are spinning can cause damage to the transfer case. • When operating your vehicle in 4L, the engine speed is approximately three times that of the 2H or 4H positions at a given road speed. Take care not to overspeed the engine and do not exceed 25 mph (40 km/h). 238 STARTING AND OPERATING Proper operation of 4-wheel drive vehicles depends on tires of equal size, type and circumference on each wheel. Any difference will adversely affect shifting and can cause damage to the transfer case. WARNING! • Because 4-wheel drive provides improved trac- tion, there is a tendency to exceed safe turning and stopping speeds. Do not go faster than road con- ditions permit. • You or others could be injured if you leave the vehicle unattended with the transfer case in the Neutral (N) position without first fully engaging the parking brake. The transfer case Neutral (N) position disengages both the front and rear drive- shafts from the powertrain and will allow the vehicle to move despite the transmission position. The parking brake should always be applied when the driver is not in the vehicle. Shift Positions For additional information on the appropriate use of each transfer case mode position see the information below: 2H Rear Wheel Drive High Range - Normal street and highway driving. Dry hard surfaced roads. 4H 4-Wheel-Drive High Range - Locks the front and rear driveshafts together. Forces the front and rear wheels to rotate at the same speed. Additional traction for loose, slippery road surfaces only. Neutral - Disengages both the front and rear driveshafts from the powertrain. To be used for flat towing behind another vehicle. Refer to “Recreational Towing” in Sec- tion 5 for more information. 4L 4-Wheel-Drive Low Range - Low speed 4 wheel drive. Locks the front and rear driveshafts together. Forces the front and rear wheels to rotate at the same speed. Additional traction and maximum pulling power for loose, slippery road surfaces only. Do not exceed 25 mph (40 km/h). (Allows engine starting without depressing the clutch pedal on vehicles equipped with manual transmission. Refer to “Starting Procedures — Manual Transmission (4WD Models Only)” in this section. Shifting Procedure 2H to 4H or 4H to 2H Shifting between 2H and 4H can be made with the vehicle in motion up to 55 mph (88 km/h). The transfer case will engage/disengage faster if you momentarily release the accelerator pedal after completing the shift. Apply a constant force when shifting the transfer case lever. STARTING AND OPERATING 239 4H to 4L or 4L to 4H With the vehicle rolling at 2 to 3 mph (3 to 5 km/h), shift an automatic transmission to N (Neutral) or depress the clutch on a manual transmission. While the vehicle is coasting at 2 to 3 mph (3 to 5 km/h), shift the transfer case lever firmly to the desired position. Do not pause in transfer case N (Neutral). NOTE: To shift from 4H to 4L, the shift lever should pushed away from the driver, and then rearward into 4L. In 4H, there is a neutral stop to prevent shifting into N (Neutral) by accident. NOTE: Pausing in transfer case N (Neutral) in vehicles equipped with an automatic transmission may require shutting the engine OFF to avoid gear clash while completing the shift. If difficulty occurs, shift automatic transmission to N (Neutral), hold foot on brake, and turn engine OFF. Make shift to the desired mode. 240 STARTING AND OPERATING NOTE: Shifting into or out of 4L is possible with the vehicle completely stopped, however difficulty may oc- cur due to the mating clutch teeth not being properly aligned. Several attempts may be required for clutch teeth alignment and shift completion to occur. The pre- ferred method is with the vehicle rolling 2 to 3 mph (3 to 5 km/h). Avoid attempting to engage or disengage 4L with the vehicle moving faster than 2 to 3 mph (3 to 5 km/h). Selec-Trac姞 Operating Information/Precautions — If Equipped The Selec-Trac威 transfer case provides 5 mode positions - normal 2-wheel drive mode, part-time 4-wheel drive high range, full-time 4-wheel drive high range, neutral, and 4-wheel drive low range. This transfer case is equipped with an inter-axle differ- ential which allows driving the vehicle in the 4 FULL TIME position at all times on any given road surface including dry hard surfaced roads. The 4 FULL TIME mode allows the front and rear wheels to rotate at different speeds which eliminates driveline binding and component wear that is normally associated with driving the vehicle in the 4 PART TIME position on dry hard surfaced roads. This feature provides the safety, security, and convenience of operating in 4–wheel drive at all times regardless of road conditions. When additional traction is required the 4 PART TIME and 4LO positions can be used to lock the front and rear driveshafts together through the transfer case inter-axle differential and force the front and rear driveshafts to rotate at the same speed. This is accomplished by simply moving the shift lever to these positions. The 4 PART TIME and 4LO positions are intended for loose, slippery road surfaces only. Driving in the 4 PART TIME and 4LO positions on dry hard surfaced roads may cause in- creased tire wear and damage to driveline components. The PART TIME indicator light, located on the instru- ment cluster, illuminates when the transfer case is shifted to the 4 PART TIME position. The FULL TIME indicator light, located on the instru- ment cluster, illuminates when the transfer case is shifted to the 4 FULL TIME position. The 4LO MODE indicator light, located on the instru- ment cluster, illuminates when the transfer case is shifted to the 4LO position. There is no light for the 2WD, or N (Neutral) positions. STARTING AND OPERATING 241 CAUTION! • Do not attempt to make a shift while only the front or rear wheels are spinning. The Selec-Trac transfer case is not equipped with a synchronizer and therefore the front and rear driveshaft speeds must be equal for the shift to take place. Shifting while only the front or rear wheels are spinning can cause damage to the transfer case. • When operating your vehicle in 4LO, the engine speed is approximately three times that of the 2WD, 4 PART TIME, or 4 FULL TIME positions at a given road speed. Take care not to overspeed the engine and do not exceed 25 mph (40 km/h). 242 STARTING AND OPERATING Proper operation of 4-wheel drive vehicles depends on tires of equal size, type, and circumference on each wheel. Any difference will adversely affect shifting and can cause damage to the transfer case. WARNING! • Because 4-wheel drive provides improved trac- tion, there is a tendency to exceed safe turning and stopping speeds. Do not go faster than road con- ditions permit. • You or others could be injured if you leave the vehicle unattended with the transfer case in the Neutral (N) position without first fully engaging the parking brake. The transfer case Neutral (N) position disengages both the front and rear drive- shafts from the powertrain and will allow the vehicle to move regardless of the transmission position. The parking brake should always be applied when the driver is not in the vehicle. Shift Positions For additional information on the appropriate use of each transfer case mode position see the information below: 2WD Rear Wheel Drive High Range - Normal street and highway driving. Dry hard surfaced roads. 4 PART TIME Part Time 4–Wheel Drive High Range - Locks the transfer case inter-axle differential. Forces the front and rear wheels to rotate at the same speed. Additional traction for loose, slippery road surfaces only. 4 FULL TIME Full Time 4-Wheel Drive High Range - Employs an inter-axle differential. This allows front and rear wheels to rotate at different speeds, on all road surfaces. N Neutral - Disengages both the front and rear driveshafts from the powertrain. To be used for flat towing behind another vehicle. Refer to “Recreational Towing” in Sec- tion 5 for more information. 4LO Part Time 4–Wheel Drive Low Range - Low speed 4–wheel drive. Locks the transfer case inter-axle differ- ential. Forces the front and rear wheels to rotate at the same speed. Additional traction and maximum pulling power for loose, slippery road surfaces only. Do not exceed 25 mph (40 km/h). Shifting Procedure 2WD to 4 PART TIME or 4 PART TIME to 2WD Shifting between 2WD and 4 PART TIME can be made with the vehicle stopped or in motion. If the vehicle is in motion, shifts can be made up to 55 mph (88 km/h). With the vehicle in motion two momentary releases of the STARTING AND OPERATING 243 accelerator pedal may be required after shifting. This will induce a torque interrupt and allow full engagement of the newly selected position. With the vehicle stationary it may be necessary to shift the automatic transmission from D (Drive) to R (Reverse) and back to D (Drive) after shifting. This will allow full engagement of the newly selected position. Apply a constant force when shifting the transfer case lever. 4 PART TIME to 4 FULL TIME or 4 FULL TIME to 4 PART TIME Shifting between 4 PART TIME and 4 FULL TIME can be made with the vehicle stopped or in motion. If the vehicle is in motion shifts can be made up to 55 mph (88 km/h). With the vehicle in motion two momentary releases of the accelerator pedal may be required after shifting. This will induce a torque interrupt and allow full engagement of the newly selected position. With the vehicle stationary it may be necessary to shift the automatic transmission from D (Drive) to R (Reverse) and back to D (Drive) after 244 STARTING AND OPERATING shifting. This will allow full engagement of the newly selected position. Apply a constant force when shifting the transfer case lever. 4 FULL TIME to 4 LO or 4 LO to 4 FULL TIME With the vehicle rolling at 2 to 3 mph (3 to 5 km/h), shift an automatic transmission to N (Neutral). While the vehicle is coasting at 2 to 3 mph (3 to 5 km/h), shift the transfer case lever firmly to the desired position. Do not pause in transfer case N (Neutral). NOTE: To shift from 4 FULL TIME to 4LO, the shift lever should be pushed away from the driver, and then rearward into 4LO. In 4 FULL TIME, there is a neutral stop to prevent shifting into N (Neutral) by accident. NOTE: Pausing in transfer case N (Neutral) in vehicles equipped with an automatic transmission may require shutting the engine OFF to avoid gear clash while completing the shift. If difficulty occurs, shift transmis- sion to N (Neutral), hold foot on brake, and turn engine OFF. Make shift to desired mode. NOTE: Shifting into or out of 4LO is possible with the vehicle completely stopped, however difficulty may oc- cur due to the mating clutch teeth not being properly aligned. Several attempts may be required for clutch teeth alignment and shift completion to occur. The pre- ferred method is with the vehicle rolling 2 to 3 mph (3 to 5 km/h). Avoid attempting to engage or disengage 4LO with the vehicle moving faster than 2 to 3 mph (3 to 5 km/h). TRAC-LOK™ REAR AXLE — IF EQUIPPED The optional Trac-Lok™ rear axle provides a constant driving force to both rear wheels and reduces wheel spin caused by the loss of traction at one driving wheel. If traction differs between the two rear wheels, the differ- ential automatically proportions the usable torque by providing more torque to the wheel that has traction. Trac-Lok™ is especially helpful during slippery driving conditions. With both rear wheels on a slippery surface, a slight application of the accelerator will supply maxi- mum traction. When starting with only one rear wheel on an excessively slippery surface, slight application of the parking brake may be necessary to gain maximum trac- tion. STARTING AND OPERATING 245 WARNING! On vehicles equipped with a limited-slip differen- tial, never run the engine with one rear wheel off the ground. The vehicle may drive through the rear wheel remaining on the ground and cause you to lose control of your vehicle. PARKING BRAKE To set the parking brake, pull the lever up as firmly as possible. When the parking brake is applied with the ignition ON, the “Brake Warning Light” in the instru- ment cluster will light. NOTE: The instrument cluster “Brake Warning Light” indicates only that the parking brake is applied. You must be sure the parking brake is fully applied before leaving the vehicle. 246 STARTING AND OPERATING To release the parking brake, pull up slightly, press the center button, then lower the lever completely. Before leaving the vehicle parked on a hill, you must make sure the parking brake is fully applied and place the gear selector in the P (Park) position. Make certain the transfer case is in gear. Failure to do so may cause the vehicle to roll and cause damage or injury. When parking on a hill, it is important to set the parking brake before placing the gear selector in P (Park), other- wise the load on the transmission locking mechanism may make it difficult to move the selector out of P (Park). WARNING! • Leaving children unattended in a vehicle is dan- gerous for a number of reasons. A child or others could be injured. Children should be warned not to touch the parking brake or the gear selector lever. Don’t leave the keys in the ignition. A child could operate power windows, other controls, or move the vehicle. • Do not leave children or animals inside parked vehicles in hot weather. Interior heat build up may cause serious injury or death. Be sure the parking brake is fully disengaged before driving. Failure to do so can lead to brake failure. NOTE: Parking brake adjustment and maintenance should be performed by your authorized dealer. ANTI-LOCK BRAKE SYSTEM — IF EQUIPPED The Anti-Lock Brake System is designed to aid the driver in maintaining vehicle control under adverse braking conditions. The system operates with a separate com- puter to modulate hydraulic pressure to prevent wheel lock-up and help avoid skidding on slippery surfaces. All vehicle wheels and tires must be the same size and type and tires must be properly inflated to produce accurate signals for the computer. WARNING! Significant over or under-inflation of tires, or mixing sizes of tires or wheels on the vehicle can lead to loss of braking effectiveness. STARTING AND OPERATING 247 The Anti-Lock Brake System conducts a low speed self-test at about 12 mph (20 km/h). If for any reason, your foot is on the brake when the vehicle reaches 12 mph (20 km/h), this check will be delayed until 25 mph (40 km/h). The Anti-Lock Brake System pump motor runs during the self-test and during an ABS stop to provide the regulated hydraulic pressure. The motor pump makes a low humming noise during operation, this is normal. During off-road use, loss of traction can temporarily defeat the system and cause the warning light to illumi- nate. Turn the ignition OFF and ON again to restore Anti-Lock Brake System function. 248 STARTING AND OPERATING WARNING! WARNING! Pumping of the Anti-Lock Brakes will diminish their effectiveness and may lead to an accident. Pumping makes the stopping distance longer. Just press firmly on your brake pedal when you need to slow down or stop. • Anti-lock system (ABS) cannot prevent the natu- ral laws of physics from acting on the vehicle, nor can it increase braking or steering efficiency be- yond that afforded by the condition of the vehicle brakes and tires or the traction afforded. • The ABS cannot prevent accidents, including those resulting from excessive speed in turns, following another vehicle too closely, or hydro- planing. Only a safe, attentive, and skillful driver can prevent accidents. • The capabilities of an ABS equipped vehicle must never be exploited in a reckless or dangerous manner which could jeopardize the user’s safety or the safety of others. CAUTION! The Anti-Lock Brake System is subject to possible detrimental effects of electronic interference caused by improperly installed aftermarket radios or tele- phones. NOTE: During severe braking conditions, a pulsing sensation may occur and a clicking noise will be heard. This is normal, the Anti-Lock Brake System is functioning. indicating that ON-ROAD DRIVING TIPS Utility vehicles have higher ground clearance and a narrower track to make them capable of performing in a wide variety of off-road applications. Specific design characteristics give them a higher center of gravity than ordinary cars. STARTING AND OPERATING 249 An advantage of the higher ground clearance is a better view of the road, allowing you to anticipate problems. They are not designed for cornering at the same speeds as conventional 2-wheel drive vehicles any more than low- slung sports cars are designed to perform satisfactorily in off-road conditions. If at all possible, avoid sharp turns or abrupt maneuvers. As with other vehicles of this type, failure to operate this vehicle correctly may result in loss of control or vehicle rollover. OFF-ROAD DRIVING TIPS When To Use 4L or 4LO (Low) Range When off-road driving, shift to 4L or 4LO for additional traction and control on slippery or difficult terrain, ascending or descending steep hills, and to increase low-speed pulling power. This range should be limited to extreme situations such as deep snow, mud, or sand 250 STARTING AND OPERATING where additional low speed pulling power is needed. Vehicle speeds in excess of 25 mph (40 km/h) should be avoided when in 4L or 4LO range. Driving Through Water Although your vehicle is capable of driving through water, there are a number of precautions that must be considered before entering the water: CAUTION! When driving through water, do not exceed 5 mph (8 km/h). Always check water depth before entering as a precaution, and check all fluids afterward. Driving through water may cause damage that may not be covered by the new vehicle limited warranty. Driving through water more than a few inches deep will require extra caution to ensure safety and prevent dam- age to your vehicle. If you must drive through water, try to determine the depth and the bottom condition (and location of any obstacles) prior to entering. Proceed with caution and maintain a steady controlled speed less than 5 mph (8 km/h) in deep water to minimize wave effects. Flowing Water If the water is swift flowing and rising (as in storm run-off) avoid crossing until the water level recedes and/or the flow rate is reduced. If you must cross flowing water avoid depths in excess of 9 inches. The flowing water can erode the streambed causing your vehicle to sink into deeper water. Determine exit point(s) that are downstream of your entry point to allow for drifting. Standing Water Avoid driving in standing water deeper than 20 inches, and reduce speed appropriately to minimize wave ef- fects. Maximum speed in 20 inches of water is less than 5 mph (8 km/h). Maintenance After driving through deep water, inspect your vehicle fluids and lubricants (engine oil, transmission oil, axle, transfer case) to assure the fluids have not been contami- nated. Contaminated fluid (milky, foamy in appearance) should be flushed/changed as soon as possible to pre- vent component damage. Driving In Snow, Mud and Sand In heavy snow, when pulling a load, or for additional control at slower speeds, shift the transmission to a low gear and shift the transfer case to 4L or 4LO if necessary. Refer to “Four-Wheel Drive Operation” in this section. STARTING AND OPERATING 251 Do not shift to a lower gear than necessary to maintain headway. Over-revving the engine can spin the wheels and traction will be lost. Avoid abrupt downshifts on icy or slippery roads, be- cause engine braking may cause skidding and loss of control. Hill Climbing NOTE: Before attempting to climb a hill, determine the conditions at the crest and/or on the other side. Before climbing a steep hill, shift the transmission to a lower gear and shift the transfer case to 4L or 4LO. Use first gear and 4L or 4LO for very steep hills. If you stall or begin to lose headway while climbing a steep hill, allow your vehicle to come to a stop and immediately apply the brakes. Restart the engine and shift to R (Reverse). Back slowly down the hill allowing the compression braking of the engine to help regulate 252 STARTING AND OPERATING your speed. If the brakes are required to control vehicle speed, apply them lightly and avoid locking or skidding the tires. WARNING! If the engine stalls or you lose headway or cannot make it to the top of a steep hill or grade, never attempt to turn around. To do so may result in tipping and rolling the vehicle. Always back care- fully straight down a hill in R (Reverse) gear. Never back down a hill in N (Neutral) using only the brake. Remember, never drive diagonally across a hill-always drive straight up or down. If the wheels start to slip as you approach the crest of a hill, ease off the accelerator and maintain headway by turning the front wheels slowly left and right. This may provide a fresh “bite” into the surface and will usually provide traction to complete the climb. Traction Downhill Shift the transmission into a low gear and the transfer case to 4L or 4LO range. Let the vehicle go slowly down the hill with all four wheels turning against engine compression drag. This will permit you to control the vehicle speed and direction. When descending mountains or hills, repeated braking can cause brake fade with loss of braking control. Avoid repeated heavy braking by downshifting the transmis- sion whenever possible. After Driving Off-Road Off-road operation puts more stress on your vehicle than does most on-road driving. After going off-road it is always a good idea to check for damage. That way you can get any problems taken care of right away and have your vehicle ready when you need it. • Completely inspect the underbody of your vehicle. Check tires, body structure, steering, suspension, and exhaust system for damage. • Check threaded fasteners for looseness, particularly on the chassis, drivetrain components, steering, and sus- pension. Retighten them, if required, and torque to the values specified in the Service Manual. • Check for accumulations of plants or brush. These things could be a fire hazard. They might hide damage to fuel lines, brake hoses, axle pinion seals, and propeller shafts. STARTING AND OPERATING 253 • After extended operation in mud, sand, water, or similar dirty conditions, have brake rotors, wheels, brake linings, and axle yokes inspected and cleaned as soon as possible. WARNING! Abrasive material in any part of the brakes may cause excessive wear or unpredictable braking. You might not have full braking power when you need it to prevent an accident. If you have been operating your vehicle in dirty conditions, get your brakes checked and cleaned as necessary. • If you experience unusual vibration after driving in mud, slush or similar conditions, check the wheels for impacted material. Impacted material can cause a wheel imbalance and freeing the wheels of it will correct the situation. 254 STARTING AND OPERATING TIRE SAFETY INFORMATION Tire Markings NOTE: • P(Passenger)-Metric tire sizing is based on U.S. design standards. P-Metric tires have the letter “P” molded into the sidewall preceding the size designation. Ex- ample: P215/65R15 95H. • European Metric tire sizing is based on European design standards. Tires designed to this standard have the tire size molded into the sidewall beginning with the section width. The letter ⬙P⬙ is absent from this tire size designation. Example: 215/65R15 96H • LT(Light Truck)-Metric tire sizing is based on U.S. design standards. The size designation for LT-Metric tires is the same as for P-Metric tires except for the letters “LT” that are molded into the sidewall preced- ing the size designation. Example: LT235/85R16. • Temporary Spare tires are high pressure compact spares designed for temporary emergency use only. Tires designed to this standard have the letter “T” molded into the sidewall preceding the size designa- tion. Example: T145/80D18 103M. • High Flotation tire sizing is based on U.S. design standards and begins with the tire diameter molded into the sidewall. Example: 31x10.5 R15 LT. Tire Sizing Chart Size Designation: EXAMPLE: P = Passenger car tire size based on U.S. design standards ⴖ....blank....ⴖ = Passenger car tire based on European design standards LT = Light Truck tire based on U.S. design standards T = Temporary Spare tire 31 = Overall Diameter in Inches (in) 215 = Section Width in Milimeters (mm) 65 = Aspect Ratio in Percent (%) —Ratio of section height to section width of tire. 10.5 = Section Width in Inches (in) R = Construction Code —⬙R⬙ means Radial Construction. —⬙D⬙ means Diagonal or Bias Construction. 15 = Rim Diameter in Inches (in) STARTING AND OPERATING 255 256 STARTING AND OPERATING Service Description: 95 = Load Index EXAMPLE: —A numerical code associated with the maximum load a tire can carry. H = Speed Symbol —A symbol indicating the range of speeds at which a tire can carry a load corresponding to its load index under certain operating conditions. —The maximum speed corresponding to the Speed Symbol should only be achieved un- der specified operating conditions. (ie. tire pressure, vehicle loading, road conditions and posted speed limits). Load Identification: ⴖ....blank....ⴖ = Absence of any text on sidewall of the tire indicates a Standard Load (SL) Tire Extra Load (XL) = Extra Load (or Reinforced) Tire Light Load = Light Load Tire C,D,E = Load range associated with the maximum load a tire can carry at a specified pressure Maximum Load — Maximum Load indicates the maximum load this tire is designed to carry. Maximum Pressure — Maximum Pressure indicates the maximum permissible cold tire inflation pressure for this tire. Tire Identification Number (TIN) The TIN may be found on one or both sides of the tire however the date code may only be on one side. Tires with white sidewalls will have the full TIN including date code located on the white sidewall side of the tire. Look for the TIN on the outboard side of black sidewall tires as mounted on the vehicle. If the TIN is not found on the outboard side then you will find it on the inboard side of the tire. STARTING AND OPERATING 257 EXAMPLE: DOT MA L9 ABCD 0301 DOT = Department of Transportation —This symbol certifies that the tire is in compliance with the U.S. Department of Transportation tire safety standards, and is approved for highway use. MA = Code representing the tire manufacturing location.(2 digits) L9 = Code representing the tire size.(2 digits) ABCD = Code used by tire manufacturer.(1 to 4 digits) 03 = Number representing the week in which the tire was manufactured.(2 digits) —03 means the 3rd week. 01 = Number representing the year in which the tire was manufactured.(2 digits) —01 means the year 2001. —Prior to July 2000, tire manufacturers were only required to have 1 number to represent the year in which the tire was manufactured. Example: 031 could represent the 3rd week of 1981 or 1991. 258 STARTING AND OPERATING Tire Loading and Tire Pressure Tire Placard Location NOTE: The proper cold tire inflation pressure for pas- senger cars is listed on either the face of the driver’s door or the driver’s side “B” pillar. For vehicles other than passenger cars, the cold tire inflation pressures are listed on either the shutface of the driver’s door, the “B” pillar, the Certification Label or in the Tire Inflation Pressures brochure in the glove compartment. Tire Placard Location Tire and Loading Information Placard Tire and Loading Information This placard tells you important information about the: 1) number of people that can be carried in the vehicle 2) the total weight your vehicle can carry 3) the tire size designed for your vehicle 4) the cold tire inflation pressures for the front, rear and spare tires. STARTING AND OPERATING 259 Loading The vehicle maximum load on the tire must not exceed the load carrying capacity of the tire on your vehicle. You will not exceed the tire’s load carrying capacity if you adhere to the loading conditions, tire size and cold tire inflation pressures specified on the Tire and Loading Information placard and the Vehicle Loading section of this manual. NOTE: Under a maximum loaded vehicle condition, gross axle weight ratings (GAWR’s) for the front and rear axles must not be exceeded. For further information on GAWR’s, vehicle loading and trailer towing, see the Vehicle Loading section of this manual. To determine the maximum loading conditions of your vehicle, locate the statement “The combined weight of occupants and cargo should never exceed XXX kg or XXX lbs.” on the Tire and Loading Information placard. The 260 STARTING AND OPERATING combined weight of occupants, cargo/luggage and trailer tongue weight (if applicable) should never exceed the weight referenced here. Steps for Determining Correct Load Limit 1. Locate the statement “The combined weight of occu- pants and cargo should never exceed XXX pounds” on your vehicle’s placard. 2. Determine the combined weight of the driver and passengers that will be riding in your vehicle. 3. Subtract the combined weight of the driver and pas- sengers from XXX kilograms or XXX pounds. 4. The resulting figure equals the available amount of cargo and luggage load capacity. For example, if “XXX” amount equals 1400 lbs. and there will be five 150 lb. passengers in your vehicle, the amount of available cargo and luggage load capacity is 650 lb. (since 5 x 150 = 750, and 1400 – 750 = 650 lb.) 5. Determine the combined weight of luggage and cargo being loaded on the vehicle. That weight may not safely exceed the available cargo and luggage load capacity calculated in step 4. 6. If your vehicle will be towing a trailer, load from your trailer will be transferred to your vehicle. Consult this manual to determine how this reduces the available cargo and luggage load capacity of your vehicle. NOTE: The following table shows examples on how to calculate total load, cargo/luggage and towing capacities of your vehicle with varying seating configurations and number and size of occupants. This table is for illustra- tion purposes only and may not be accurate for the seating and load carry capacity of your vehicle. NOTE: For the following example the combined weight of occupants and cargo should never exceed 865 lbs. (392 Kg). STARTING AND OPERATING 261 262 STARTING AND OPERATING WARNING! 1. Safety— Overloading of your tires is dangerous. Overloading can cause tire failure, affect vehicle handling, and increase your stopping distance. Use tires of the recommended load capacity for your vehicle. Never overload them. TIRES — GENERAL INFORMATION Proper tire inflation pressure is essential to the safe and satisfactory operation of your vehicle. Three primary areas are affected by improper tire pressure: WARNING! Improperly inflated tires are dangerous and can cause accidents. • Under inflation increases tire flexing and can result in tire failure. • Over inflation reduces a tire’s ability to cushion shock. Objects on the road and chuck holes can cause damage that results in tire failure. • Unequal tire pressures can cause steering prob- lems. You could lose control of your vehicle. • Overinflated or under inflated tires can affect vehicle handling and can fail suddenly, resulting in loss of vehicle control. Always drive with each tire properly inflated. 2. Economy— Improper inflation pressures can cause uneven wear patterns to develop across the tire tread. These abnormal wear patterns will reduce tread life resulting in a need for earlier tire replacement. Under inflation also increases tire rolling resistance and results in higher fuel consump- tion. 3. Ride Comfort and Vehicle Stability— Proper tire inflation contributes to a comfortable ride. Over inflation produces a jarring and uncomfortable ride. Both under inflation and over inflation affect the stability of the vehicle and can produce a feeling of sluggish response or over responsiveness in the steering. Unequal tire pressures can cause erratic and unpredict- able steering response. Unequal tire pressure from side to side may cause the vehicle to drift left or right. STARTING AND OPERATING 263 Tire Inflation Pressures The proper cold tire inflation pressure is listed on either the face of the driver’s door, or the driver’s side “B” pillar. Tire Placard Location The “Cold Inflation Pressure” of each tire should be checked and adjusted at least once every month. Check 264 STARTING AND OPERATING more often if subject to a wide range of outdoor tempera- tures, as tire pressures vary with temperature changes. Inflation pressures specified on the label are always “Cold Inflation Pressure.” Cold inflation pressure is defined as the tire pressure after the vehicle has been idle for at least 3 hours, or driven less than a mile after a 3 hour period. The cold inflation pressure of each tire should be set according to the manufacturers recom- mended pressure, and must not exceed the maximum values molded into the tire sidewall. Tire pressures may increase from 13 to 40 kPa (2 to 6 psi) [0.138 to 0.414 bar] during operation. DO NOT reduce this normal pressure buildup. High Speed Operation WARNING! High speed driving with your vehicle under load is dangerous. The added strain on your tires could cause them to fail. You could have a serious accident. Don’t drive a vehicle loaded to maximum capacity at continuous speeds above 75 mph (120 km/h). The manufacturer advocates driving at safe speeds within posted speed limits. Where speed limits or condi- tions are such that the vehicle can be driven at high speeds, correct tire inflation pressure is very important. Radial-Ply Tires WARNING! Combining radial ply tires with other types of tires on your vehicle will cause your vehicle to handle poorly. The instability could cause an accident. Al- ways use radial tires in sets of four. Never combine them with other types of tires. Cuts and punctures in radial tires are repairable only in the tread area because of sidewall flexing. Consult your dealer for radial tire repairs. STARTING AND OPERATING 265 Tire Spinning When stuck in mud, sand, snow, or ice conditions, do not spin your vehicle’s wheels above 35 mph (55 km/h). WARNING! Fast spinning tires can be dangerous. Forces gener- ated by excessive wheel speeds may cause tire dam- age or failure. A tire could explode and injure someone. Do not spin your vehicle’s wheels faster than 35 mph (55 km/h) when you are stuck, and do not let anyone near a spinning wheel no matter what the speed. 266 STARTING AND OPERATING Tread Wear Indicators These indicators are narrow strips 1/16 inch (1.6 mm) thick and are found in the tread pattern grooves. When the tread pattern is worn down to these treadwear indicators, the tires should be replaced. Replacement Tires The tires on your new vehicle provide a balance of many characteristics. They should be inspected regularly for wear and correct inflation pressure. The manufacturer strongly recommends that you use tires equivalent to the originals in quality and performance when replacement is needed (see section on tread wear indicators). Failure to use equivalent replacement tires may adversely affect the safety, handling, ride and fuel economy of your vehicle. We recommend that you contact your original equipment tire dealer on any questions you may have on tire specifications or capability. Overloading your vehicle, long trips in very hot weather, and driving on bad roads may result in greater wear. WARNING! • Do not use a tire, wheel size or rating other than that specified for your vehicle. Some combinations of unap- proved tires and wheels may change suspension dimen- sions and performance characteristics, resulting in changes to steering, handling, and braking of your vehicle. This can cause unpredictable handling and stress to steering and suspension components. You could lose control and have an accident resulting in serious injury or death. Use only the tire and wheel sizes with load ratings approved for your vehicle. • Never use a tire smaller than the minimum tire size listed on your vehicle’s tire label. Using a smaller tire could result in tire overloading and failure. You could lose control and have an accident. • Failure to equip your vehicle with tires having adequate speed capability can result in sudden tire failure and loss of vehicle control. • Overloading your tires is dangerous. Overloading can cause tire failure. Use tires of the recommended load capacity for your vehicle - never overload them. STARTING AND OPERATING 267 CAUTION! Replacing original tires with tires of a different size may result in false speedometer and odometer read- ings. Check with your dealer before replacing tires with a different size. Alignment and Balance The suspension components of your vehicle should be inspected and aligned when needed, to obtain maximum tire tread life. Poor suspension alignment may result in: • reduced tread life; • uneven tire wear, such as feathering and one-sided • vehicle pull to the right or to the left. wear; 268 STARTING AND OPERATING Tires may also cause the vehicle to pull left or right. Alignment will not correct this problem. See your dealer for proper diagnosis of the problem. Improper alignment will not normally cause vehicle vibration, which may be a result of tire and wheel out-of-balance. Proper balancing will reduce vibration and avoid tire cupping and spotty wear. TIRE PRESSURE MONITOR SYSTEM — IF EQUIPPED Tire Pressure Monitoring — Base System The Tire Pressure Monitor System (TPM) system uses wireless technology with wheel rim mounted electronic sensors to monitor tire pressure levels (EXCLUDING THE SPARE TIRE). Sensors, mounted to each wheel as part of the valve stem, transmit tire pressure readings to the Receiver Module. It is particularly important, for you to check the NOTE: tire pressure in all of your tires regularly and to maintain the proper pressure. The Tire Pressure Monitoring Indicator Lamp will illuminate in the instrument cluster, and an au- dible chime will be activated when one or more tire pressures is low. The Tire Pressure Monitoring Indi- cator Lamp will flash on and off for ten seconds when a system fault is detected. The flash cycle will repeat every ten minutes or until the fault condition is removed and reset. The Tire Pressure Monitoring System consists of the following components: • Receiver Module • 4/5 Wheel Sensors • Amber Colored Tire Pressure Monitoring Indicator Lamp The system will consist of tire pressure monitoring sensors attached to each wheel through the valve stem mounting hole, a central receiver module and an amber colored Indicator Lamp. A sensor is located in the spare wheel if the vehicle is equipped with a matching full size spare wheel and tire assembly. NOTE: For vehicles with optional wheel/tire sizes and significantly different tire placard pressures, the placard pressure value and the low-pressure threshold value is re-programmable at your authorized dealer to accommo- date the customer selected wheel/tire combinations rec- ommended by DaimlerChrysler. STARTING AND OPERATING 269 CAUTION! The TPM system has been optimized for the original equipment tires and wheels. TPM system pressures have been established for the tire size equipped on your vehicle. Undesirable system operation or sen- sor damage may result when using replacement equipment that is not of the same size, type, and/or style. After-market wheels can cause sensor damage. Do not use tire sealant from a can, or balance beads if your vehicle is equipped with a TPM system, as damage to the sensors may result. 270 STARTING AND OPERATING CAUTION! After inspecting or adjusting the tire pressure al- ways reinstall the valve stem cap. This will prevent moisture and dirt from entering the valve stem, which could damage the wheel rim sensor. pressure condition. NOTE: • The TPM system can inform the driver of a low tire • The TPM system is not intended to replace normal tire care and maintenance, nor to provide warning of a tire failure or condition. • The TPM system should not be used as a tire pressure gauge while adjusting your tire pressure. Tire Pressure Monitoring — Premium System The Tire Pressure Monitor System (TPM) system uses wireless technology with wheel rim mounted electronic sensors to monitor tire pressure levels. Sensors mounted to each wheel as part of the valve stem transmit tire pressure readings to the Receiver Module. The wheel sensors monitor tire pressure, and status for all four active road tires and the spare tire. The spare tire pressure is monitored, but not displayed. It is particularly important, for you to check the NOTE: tire pressure in all of your tires regularly and to maintain the proper pressure. The Tire Pressure Monitoring Indicator Lamp will illuminate in the instrument cluster, and an au- dible chime will be activated when one or more tire pressures is low. The Tire Pressure Monitoring Indi- cator Lamp will flash on and off for ten seconds when a system fault is detected. The flash cycle will repeat every ten minutes or until the fault condition is removed and reset. The Tire Pressure Monitoring System consists of the following components: • Receiver Module • 4/5 Wheel Sensors • 4 Wheel Sensor Trigger Modules • Tire Pressure Monitoring System Display Messages in • Amber Colored Tire Pressure Monitoring Indicator the EVIC Lamp The system consists of tire pressure monitoring sensors attached to each wheel through the valve stem mounting hole, a central receiver module, Wheel Sensor Trigger Modules mounted in three of the four wheel wells, STARTING AND OPERATING 271 various Tire Pressure Monitoring System Display Mes- sages in the EVIC, and an amber colored Indicator Lamp. A sensor shall be installed in the spare wheel if the vehicle is equipped with a matching full size spare wheel and tire assembly. NOTE: For vehicles with optional wheel/tire sizes and significantly different tire placard pressures, the placard pressure value and the low-pressure threshold value is re-programmable at your authorized dealer to accommo- date the customer selected wheel/tire combinations rec- ommended by DaimlerChrysler. The following ⬙warnings⬙ will cause a text message to be displayed, an audible chime to sound and the tire pres- sure Indicator Lamp to illuminate. The audible chime will occur once every ignition cycle for each ⬙warning⬙ detected. The tire pressure Indicator Lamp will illumi- nate continuously (solid) and shall remain illuminated until the warning condition is removed/reset. 272 STARTING AND OPERATING NOTE: The Indicator Lamp will only illuminate for the four active road tires. A low spare tire pressure will not cause the Indicator Lamp to illuminate When the appropriate conditions exist, the Electronic Vehicle Information Center (EVIC) displays the following messages. LEFT FRONT, LEFT REAR, RIGHT FRONT, RIGHT REAR LOW PRESSURE, SPARE LOW PRESSURE One or more of these messages will be displayed in the EVIC if a low tire pressure condition exists in one or more tires. Inspect all tires for proper inflation pressure, once the proper tire pressure has been set, the TPM system warning will reset automatically when the vehicle has been driven for at least 2 minutes at or above 15 mph (24 km/h). CHECK TPM SYSTEM See your authorized dealer when this message appears in the EVIC. This message indicates that a system fault condition has been detected. CAUTION! The TPM system has been optimized for the original equipment tires and wheels. TPM system pressures have been established for the tire size equipped on your vehicle. Undesirable system operation or sen- sor damage may result when using replacement equipment that is not of the same size, type, and/or style. After-market wheels can cause sensor damage. Do not use tire sealant from a can, or balance beads if your vehicle is equipped with a TPM system, as damage to the sensors may result. CAUTION! After inspecting or adjusting the tire pressure al- ways reinstall the valve stem cap. This will prevent moisture and dirt from entering the valve stem, which could damage the wheel rim sensor. pressure condition. NOTE: • The TPM system can inform the driver of a low tire • The TPM system is not intended to replace normal tire care and maintenance, nor to provide warning of a tire failure or condition. • The TPM system should not be used as a tire pressure gauge while adjusting your tire pressure. STARTING AND OPERATING 273 General Information This device complies with part 15 of the FCC rules and RSS 210 of Industry Canada. Operation is subject to the following conditions: • This device may not cause harmful interference. • This device must accept any interference received, including interference that may cause undesired op- eration. The tire pressure sensors are covered under one of the following licenses: United States . . . . . . . . . . . . . . . . . . . . . KR5S120123 Canada . . . . . . . . . . . . . . . . . . . . . . . . 2671-S120123 274 STARTING AND OPERATING TIRE CHAINS CAUTION! To avoid damage to your vehicle or tires, observe the following precautions: • Because of restricted chain clearance between tires and other suspension components, it is important that only chains in good condition are used. Broken chains can cause serious damage. Stop the vehicle immediately if noise occurs that could indicate chain breakage. Remove the damaged parts of the chain before further use. retighten after driving about 1⁄2 mile (0.8 km). • Install chains on the rear wheels as tightly as possible and then • Do not exceed 30 mph (48 km/h). • Drive cautiously and avoid severe turns and large bumps, • Do not drive for prolonged period on dry pavement. • Observe the tire chain manufacturer’s instructions on the especially with a loaded vehicle. method of installation, operating speed, and conditions for use. Always use the lower suggested operating speed of the chain manufacturer if different than the speed recommended by the manufacture. 65R17 tires. Tire chains that are recommended for this vehicle are listed below: • Mopar威 P/N 82206828 with P235/70R16 and P235/ • Mopar威 P/N 82207074 with P215/75R16 tires. In order to avoid damage to tires, chains, and NOTE: your vehicle do not drive for a prolonged period of time on dry pavement. Observe the tire chain manufacturer’s instructions on method of installation, operating speed, and conditions for usage. Always use the lower suggested operating speed if both the chain manufacturer and vehicle manufacturer sug- gest a maximum speed. This notice applies to all chain traction devices, including link and cable (radial) chains. TIRE ROTATION RECOMMENDATIONS Tires on the front and rear axles of vehicles operate at different loads and perform different steering, handling, and braking functions. For these reasons, they wear at unequal rates, and develop irregular wear patterns. These effects can be reduced by timely rotation of tires. The benefits of rotation are especially worthwhile with aggressive tread designs such as those on On/Off Road type tires. Rotation will increase tread life, help to main- tain mud, snow, and wet traction levels, and contribute to a smooth, quiet ride. STARTING AND OPERATING 275 2.4L/3.7L Engines Follow the recommended tire rotation frequency for your type of driving found in the “Maintenance Schedules” Section of this manual. More frequent rotation is permis- sible if desired. The reasons for any rapid or unusual wear should be corrected prior to rotation being performed. 2.8L Turbo Diesel Engines Rotate the tires every 6,000 miles (10 000 km). NOTE: The Premium Tire Pressure Monitor System will automatically locate the pressure values displayed in the correct vehicle position following a tire rotation. 276 STARTING AND OPERATING The suggested rotation method is the “forward-cross” shown in the following diagram. FUEL REQUIREMENTS (GASOLINE ENGINES) Your engine is designed to meet all emis- sions regulations and provide excellent fuel economy and performance when us- ing high quality unleaded gasoline having an octane rating of 87. The use of premium gasoline is not recommended. The use of premium gasoline will provide no benefit over high quality regular gasoline, and in some circumstances may result in poorer performance. Mid-grade gasoline (89 octane) will enhance engine per- formance during the following conditions (3.7L Only): • Hot weather • Towing • Hard accelerations • Hilly terrain • Low humidity Light spark knock at low engine speeds is not harmful to your engine. However, continued heavy spark knock at high speeds can cause damage and immediate service is required. Poor quality gasoline can cause problems such as hard starting, stalling and hesitations. If you experience these symptoms, try another brand of gasoline before consid- ering service for the vehicle. Over 40 auto manufacturer’s world wide have issued and endorsed consistent gasoline specifications (the World- wide Fuel Charter, WWFC) to define fuel properties necessary to deliver enhanced emissions, performance, and durability for your vehicle. The manufacturer recom- mends the use of gasoline that meets the WWFC speci- fications if they are available. STARTING AND OPERATING 277 Reformulated Gasoline Many areas of the country require the use of cleaner burning gasoline referred to as Reformulated Gasoline. Reformulated gasoline contains oxygenates, and is spe- cifically blended to reduce vehicle emissions and im- prove air quality. The manufacturer strongly supports the use of reformu- lated gasoline. Properly blended reformulated gasoline will provide excellent performance and durability for the engine and fuel system components. 278 STARTING AND OPERATING Gasoline/Oxygenate Blends Some fuel suppliers blend unleaded gasoline with oxy- genates such as 10% ethanol, MTBE, and ETBE. Oxygen- ates are required in some areas of the country during the winter months to reduce carbon monoxide emissions. Fuels blended with these oxygenates may be used in your vehicle. CAUTION! DO NOT use gasoline containing METHANOL. Gasoline containing methanol may damage critical fuel system components. MMT In Gasoline MMT is a manganese containing metallic additive that is blended into some gasoline to increase octane. Gasoline blended with MMT provides no performance advantage beyond gasoline of the same octane number without MMT. Gasoline blended with MMT reduces spark plug life and reduces emission system performance in some vehicles. The manufacturer recommends that gasoline without MMT be used in your vehicle. The MMT content of gasoline may not be indicated on the gasoline pump, therefore, you should ask your gasoline retailer whether or not his/her gasoline contains MMT. It is even more important to look for gasoline without MMT in Canada because MMT can be used at levels higher than allowed in the United States. MMT is pro- hibited in Federal and California reformulated gasoline. Materials Added To Fuel All gasoline sold in the United States is required to contain effective detergent additives. Use of additional detergents or other additives is not needed under normal conditions. Fuel System Cautions CAUTION! Follow these guidelines to maintain your vehicle’s performance: • The use of leaded gas is prohibited by Federal law. Using leaded gasoline can impair engine performance, damage the emission control system. STARTING AND OPERATING 279 • An out-of-tune engine, or certain fuel or ignition malfunctions, can cause the catalytic converter to overheat. If you notice a pungent burning odor or some light smoke, your engine may be out of tune or malfunctioning and may require immediate service. Contact your dealer for service assistance. • The use of fuel additives which are now being sold as octane enhancers is not recommended. Most of these products contain high concentrations of methanol. Fuel system damage or vehicle performance problems resulting from the use of such fuels or additives is not the responsibility of the manufacturer. NOTE: systems can result against you. Intentional tampering with emissions control in civil penalties being assessed 280 STARTING AND OPERATING Carbon Monoxide Warnings WARNING! Carbon monoxide (CO) in exhaust gases is deadly. Follow the precautions below to prevent carbon monoxide poisoning: • Do not inhale exhaust gases. They contain carbon monoxide, a colorless and odorless gas which can kill. Never run the engine in a closed area, such as a garage, and never sit in a parked vehicle with the engine running for an extended period. If the vehicle is stopped in an open area with the engine running for more than a short period, adjust the ventilation system to force fresh, outside air into the vehicle. • Guard against carbon monoxide with proper mainte- nance. Have the exhaust system inspected every time the vehicle is raised. Have any abnormal conditions repaired promptly. Until repaired, drive with all side windows fully open. • Keep the swing gate closed when driving your vehicle to prevent carbon monoxide and other poisonous exhaust gases from entering the vehicle. FUEL REQUIREMENTS (DIESEL ENGINES) Use good quality diesel fuel from a reputable supplier. For most year-round service, No. 2 diesel fuel meeting ASTM specification D-975 will provide good perfor- mance. If the vehicle is exposed to extreme cold (below 20°F or -7°C), or is required to operate at colder-than- normal conditions for prolonged periods, use climatized No. 2 diesel fuel or dilute the No. 2 diesel fuel with 50% No. 1 diesel fuel. This will provide better protection from fuel gelling or wax-plugging of the fuel filters. NOTE: DaimlerChrysler Corporation recommends that this vehicle should be operated using Diesel fuel with 15 ppm Sulfur or less, where it is available. STARTING AND OPERATING 281 FUEL TANK FILLER CAP (GAS CAP) WARNING! WARNING! To avoid fuel spillage and overfilling, do not “top off” the fuel tank after filling. Do not use alcohol or gasoline as a fuel blending agent. They can be unstable under certain conditions and hazardous or explosive when mixed with diesel fuel. Diesel fuel is seldom completely free of water. To prevent fuel system trouble, drain the accumulated water from the fuel/water separator using the fuel/water separator drain provided. If you buy good quality fuel and follow the cold weather advice above, fuel conditioners should not be required in your vehicle. If available in your area, a high cetane “premium” diesel fuel may offer improved cold-starting and warm-up performance. CAUTION! DO NOT put gasoline in your diesel vehicle (if equipped). If you accidentally put gasoline in your vehicle, DO NOT start the engine. This will cause damage to the fuel system. Have the fuel system flushed. 282 STARTING AND OPERATING The gas cap is located behind the fuel filler door, on the left side of the vehicle. If the gas cap is lost or damaged, be sure the replacement cap has been designed for use with this vehicle. When tightening the gas cap, tighten until 2 or 3 clicks are heard to insure that the cap is properly seated. NOTE: A loose gas cap may cause the “Malfunction Indicator Light” to illuminate. Fuel Filler Cap Loose Fuel Filler Cap Message If the vehicle diagnostic system determines that the fuel filler cap is loose, improperly installed, or damaged, a “CHECK GAS CAP” message will be displayed in the EVIC (Electronic Vehicle Information Center). Refer to “Overhead Console” in Section 3 of this manual. Tighten the fuel filler cap properly and press the odometer reset button to turn the message off. If the problem continues, the message will appear the next time the vehicle is started. Refer to “Onboard Diagnostic System — OBDII” in Section 7 of this manual for more information. CAUTION! Damage to the fuel system or emission control system could result from using an improper fuel tank filler cap (gas cap). A poorly fitting cap could let impurities into the fuel system. STARTING AND OPERATING 283 WARNING! • Never add fuel when the engine is running. • Never have any smoking materials lit in or near the vehicle when the fuel cap is removed or the tank filled. TRAILER TOWING In this section you will find information on limits to the type of towing you can reasonably do with your vehicle. Before towing a trailer, carefully review this information to tow your load as efficiently and safely as possible. To maintain warranty coverage, follow the requirements and recommendations in this manual concerning ve- hicles used for trailer towing. 284 STARTING AND OPERATING Perform maintenance services as prescribed in the “Maintenance Schedules” section. When your vehicle is used for trailer towing, never exceed the gross axle weight rating (GAWR) by the addition of: • The tongue weight of the trailer. • The weight of any other type of cargo or equipment put in or on your vehicle. Remember that everything put in or on the trailer adds to the load on your vehicle. Warranty Requirements The manufacturer’s warranty will apply to vehicles used to tow trailers for noncommercial use, however the following conditions must be met: • The “D” Overdrive range can be selected when tow- ing. However, if frequent shifting occurs select the “O/D Off” function or move the shift lever to the next lower position to eliminate excessive automatic trans- mission shifting. This action will also reduce the possibility of transmission overheating and provide better engine braking. Refer to “Transmission Shift- ing” in this section for additional information. • A load equalizing hitch is recommended for loaded trailer weights above 1,000 lbs (454 kg). STARTING AND OPERATING 285 • Whenever you pull a trailer, regardless of the trailer size, stop lights and turn signals on the trailer are mandatory for motoring safety. • Follow the maintenance intervals in schedule “B” for changing the automatic transmission fluid and filter, if you REGULARLY tow a trailer for more than 45 minutes of continuous operation. CAUTION! If the trailer weighs more than 1,000 lbs (454 kg) loaded, it should have its own brakes and they should be of adequate capacity. Failure to do this could lead to accelerated brake lining wear, higher brake pedal effort, and longer stopping distances. WARNING! Connecting trailer brakes to your vehicle’s hydraulic brake lines can overload your brake system and cause it to fail. You might not have brakes when you need them and could have an accident. 286 STARTING AND OPERATING Minimum Vehicle Requirements for Trailer Towing RECREATIONAL TOWING (BEHIND MOTORHOME, ETC.) Towing – 2WD Models Recreational towing is not allowed. Towing with the rear wheels on the ground can result in severe transmis- sion damage. Towing — 4WD Models CAUTION! Internal damage to the transfer case will occur if a front or rear wheel lift is used when recreational towing. NOTE: The transfer case must be shifted into N (Neu- tral), and the transmission must be shifted into P (Park) STARTING AND OPERATING 287 (for automatic transmission) or into any forward gear (for manual transmission) for recreational towing. Shifting Into Neutral (N) Use the following procedure to prepare your vehicle for recreational towing. CAUTION! It is necessary to follow these steps to be certain that the transfer case is fully in N (Neutral) before recreational towing to prevent damage to internal parts. 1. Depress brake pedal. 2. Shift transmission into N (Neutral). 3. Shift transfer case lever into N (Neutral). 4. Start engine. 288 STARTING AND OPERATING 5. Shift automatic transmission into D (Drive) or manual transmission into any forward gear. 6. Release brake pedal and ensure that there is no vehicle movement. 7. Shut the engine OFF and place the ignition key into the unlocked OFF position. 8. Shift automatic transmission into P (Park) or ensure manual transmission is in any forward gear. 9. Apply parking brake. 10. Attach vehicle to the tow vehicle with tow bar. 11. Release parking brake. CAUTION! Transmission damage may occur if the automatic transmission is shifted into P (Park) with the transfer case in N (Neutral) and the engine running. With the transfer case in N (Neutral) ensure that the engine is OFF prior to shifting the transmission into P (Park) (refer to steps 7 – 8 above). Shifting Out Of Neutral (N) Use the following procedure to prepare your vehicle for normal usage. 1. Shift transmission into N (Neutral). 2. Turn engine off. 3. Shift transfer case lever to desired position. 4. Shift automatic transmission into P (Park). 5. Start engine. 6. Shift automatic transmission into D (Drive) or manual transmission into any forward gear. WARNING! You or others could be injured if you leave the vehicle unattended with the transfer case in the N (Neutral) position without first fully engaging the parking brake. The transfer case N (Neutral) position disengages both the front and rear driveshafts from the powertrain and will allow the vehicle to move regardless of the transmission position. The parking brake should always be applied when the driver is not in the vehicle. STARTING AND OPERATING 289 CAUTION! Do not use a bumper mounted clamp-on tow bar on your vehicle. The bumper face bar will be damaged. SNOW PLOW Snow plows, winches, and other aftermarket equipment should not be added to the front end of your vehicle. The airbag crash sensors may be affected by the change in the front end structure. The airbags could deploy unexpect- edly or could fail to deploy during a collision. 290 STARTING AND OPERATING WARNING! Do not add a snow plow, winches, or any other aftermarket equipment to the front of your vehicle. This could adversely affect the functioning of the airbag system and you could be injured. WHAT TO DO IN EMERGENCIES CONTENTS 䡵 Hazard Warning Flashers . . . . . . . . . . . . . . . . . 292 䡵 If Your Engine Overheats . . . . . . . . . . . . . . . . . 293 䡵 Jacking And Tire Changing . . . . . . . . . . . . . . . . 294 ▫ Jack Location . . . . . . . . . . . . . . . . . . . . . . . . 295 ▫ Spare Tire Stowage . . . . . . . . . . . . . . . . . . . . 295 ▫ Preparations For Jacking . . . . . . . . . . . . . . . . 296 ▫ Jacking Instructions . . . . . . . . . . . . . . . . . . . . 296 䡵 Jump Starting Procedure . . . . . . . . . . . . . . . . . . 299 䡵 Emergency Tow Hooks — If Equipped . . . . . . . . 301 䡵 Towing A Disabled Vehicle . . . . . . . . . . . . . . . . 302 ▫ 2WD Models Only . . . . . . . . . . . . . . . . . . . . 302 ▫ 4WD Models Only . . . . . . . . . . . . . . . . . . . . 302 292 WHAT TO DO IN EMERGENCIES HAZARD WARNING FLASHERS Your vehicle’s hazard warning flasher is an emergency warning system. When you activate it, all front and rear directional signals will flash intermittently. Use it when your vehicle is disabled on or near the road. It warns other drivers to steer clear of you and your vehicle. This is an emergency warning system, not to be used when the vehicle is in motion. To activate the warning flashers, press the button on the instrument panel (between center air outlets). To turn the warning flashers off, press the button again. Hazard Warning Switch NOTE: With extended use, the flashers may run down your battery. IF YOUR ENGINE OVERHEATS In any of the following situations, you can reduce the potential for overheating by taking the appropriate ac- tion. • On the highways — Slow down. • In city traffic — While stopped, put transmission in N (Neutral), but do not increase engine idle speed. NOTE: There are steps that you can take to slow down an impending overheat condition. If your air conditioner is on, turn it off. The air conditioning system adds heat to the engine cooling system and turning off the A/C removes this heat. You can also turn the Temperature Control to maximum heat, the Mode Control to floor, and the Fan Control to High. This allows the heater core to act as a supplement to the radiator and aids in removing heat from the engine cooling system. WHAT TO DO IN EMERGENCIES 293 If the pointer rises to the “H” (hot mark) on a vehicle equipped with a gasoline engine , pull over and stop the vehicle. Do not turn the engine off. Idle the vehicle with the air conditioning turned off, until the pointer drops back into the normal range. CAUTION! Driving with a hot cooling system could damage your vehicle. If the temperature gauge reads “H”, pull over and stop the vehicle. Idle the vehicle with the air conditioner turned off until the pointer drops back into the normal range. If the pointer remains on the “H”, and you hear continuous chimes, turn the engine off immediately, and call for service. 294 WHAT TO DO IN EMERGENCIES If the coolant temperature of a vehicle equipped with a diesel engine approaches the “H” (hot mark) a warning chime will sound to alert the driver. The air conditioning system will turn off automatically and power loss will occur until the engine temperature returns to the normal range. If the overheating condition persists a continuous chime will sound to alert the driver. Reduce the vehicle speed and or stop the vehicle while allowing the engine to idle and cool the engine. JACKING AND TIRE CHANGING WARNING! • Getting under a jacked-up vehicle is dangerous. The vehicle could slip off the jack and fall on you. You could be crushed. Never get any part of your body under a vehicle that is on a jack. If you need to get under a raised vehicle, take it to a service center where it can be raised on a lift. • The jack is designed to use as a tool for changing tires only. The jack should not be used to lift the vehicle for service purposes. The vehicle should be jacked on a firm level surface only. Avoid ice or slippery areas. Jack Location The scissor-type jack, and tire changing tools are stored beneath the right rear seat. To remove the jack from its stowage position, turn the thumb screw counterclock- wise to loosen jack assembly and then remove it. WHAT TO DO IN EMERGENCIES 295 Spare Tire Stowage To remove the spare tire from the carrier, remove the tire cover, if equipped, and remove the lug nuts with the lug wrench turning them counterclockwise. Jack Storage Location Spare Tire Mounting 296 WHAT TO DO IN EMERGENCIES If you have added aftermarket accessories to the NOTE: spare tire mounted carrier, it cannot exceed a gross weight of 50 lbs (23 kg) including the weight of the spare tire. Preparations For Jacking Park the vehicle on a firm level surface, avoid ice or slippery areas, set the parking brake and place auto- matic transmission in P (Park), or manual transmission in R (Reverse). Turn OFF the ignition. WARNING! Do not attempt to change a tire on the side of the vehicle close to moving traffic. Pull far enough off the road to avoid being hit when operating the jack or changing the wheel. • Turn on the Hazard Warning Flasher. • Block both the front and rear of the wheel diagonally oppo- site of the jacking position. For example, if changing the right front tire, block the left rear wheel. • Passengers should not remain in the vehicle when the vehicle is being jacked. Jacking Instructions 1. Remove spare tire. 2. Loosen (but do not remove) the wheel lug nuts by turning them to the left one turn while the wheel is still on the ground. 3. Remove jack and tools from mounting bracket. As- semble the tools by connecting the driver to the exten- sion, and then to the lug wrench. 4. Locate the jack as shown. For the front tires, place it in the notch on the body weld seam behind wheel to be changed. For the rear tires, place it under the axle by the wheel to be changed. Position the jack handle on the jack. Do not raise the vehicle until you are sure the jack is fully engaged. WHAT TO DO IN EMERGENCIES 297 Rear Jacking Location 5. Raise the vehicle by turning the jack screw to the right. Raise the vehicle only until the tire just clears the surface and enough clearance is obtained to install the spare tire. Minimum tire lift provides maximum stability. Front Jacking Location 298 WHAT TO DO IN EMERGENCIES WARNING! Raising the vehicle higher than necessary can make the vehicle less stable and cause an accident. It could slip off the jack and hurt someone near it. Raise the vehicle only enough to remove the tire. 6. Remove the lug nuts and wheel. 7. Position the spare wheel/tire on the vehicle and install lug nuts with cone-shaped end toward wheel. Lightly tighten the nuts. To avoid the risk of forcing the vehicle off the jack, do not tighten the nuts fully until the vehicle has been lowered. 8. Lower the vehicle by turning the jack screw to the left, and remove the jack and wheel blocks. 9. Finish tightening the lug nuts. Push down on the wrench while tightening for increased leverage. Alternate nuts until each nut has been tightened twice. Correct wheel nut tightness is 130 N·m (95 ft. lbs). If in doubt about the correct tightness, have them checked with a torque wrench by your authorized dealer or at a service station. 10. Lower the jack to it’s fully closed position. WARNING! A loose tire or jack, thrown forward in a collision or hard stop could endanger the occupants of the ve- hicle. Always stow the jack parts and the spare tire in the places provided. 11. Secure the tire, jack, and tools in their proper loca- tions. JUMP STARTING PROCEDURE NOTE: Check the charge indicator on the battery. If the indicator is light or yellow, replace the battery. 1. Wear eye protection and remove any metal jewelry such as watch bands or bracelets that might make an unintended electrical contact. 2. When boost is provided by a battery in another vehicle, park that vehicle within booster cable reach but without letting the vehicles touch. Set the parking brake, place the automatic transmission in P (Park), or manual transmission in N (Neutral), and turn the ignition to OFF for both vehicles. 3. Turn off the heater, radio and all unnecessary electrical loads. WHAT TO DO IN EMERGENCIES 299 4. Connect one end of a jumper cable to the positive terminal of the discharged battery. Connect the other end of the same cable to the positive terminal of the booster battery. 5. Connect the other cable, first to the negative terminal of the booster battery and then connect the other end to a non-paint metal surface on the engine of the vehicle with the discharged battery. Make sure you have a good contact on the engine. 6. Start the engine in the vehicle which has the booster battery, let the engine idle a few minutes, then start the engine in the vehicle with the discharged battery. 7. When removing the jumper cables, reverse the above sequence exactly. Be careful of the moving belts and fan. 300 WHAT TO DO IN EMERGENCIES NOTE: To start the vehicle following connection of a booster battery, the Security Alarm System must first be disabled by cycling a front door key cylinder or by using the keyless entry transmitter. WARNING! Jump starting can be dangerous. To avoid personal injury or damage to electrical components in vehicle, observe the following warnings: • Battery fluid is a corrosive acid solution and can burn or even blind you. Don’t allow battery fluid to contact your eyes, skin, or clothing. Don’t lean over a battery when attaching clamps. If acid splashes in eyes or on skin, flush the area immediately with large amounts of water. • Do not use a booster battery or any other booster source that has a greater than 12–volt system, i.e., do not use a 24–volt power source. • Never attempt to jump start a discharged battery that is frozen, because it could rupture or explode during jump starting. • Be sure your vehicle is not touching the jump start • Observe all Battery Warnings in Section 7 of this vehicle. manual, while jump starting your vehicle. WARNING! CAUTION! WHAT TO DO IN EMERGENCIES 301 Do not attempt to push or tow your vehicle to get it started. Unburned fuel could enter the catalytic converter and, once the engine has started, ignite and damage the converter and vehicle. EMERGENCY TOW HOOKS — IF EQUIPPED If your vehicle is equipped with tow hooks, they are mounted in the front and the rear. Tow hooks are for emergency use only, to rescue a vehicle stranded off road. Do not use tow hooks for tow truck hookup or highway towing. You could damage your vehicle. Tow straps are recommended when towing the vehicle, chains may cause vehicle damage. WARNING! Stand clear of vehicles when pulling with tow hooks. Tow straps and chains may break, causing serious injury. 4WD Models Only The manufacturer recommends towing with all four wheels OFF the ground. Acceptable methods are to tow the vehicle on a flatbed or with one end of the vehicle raised and the other end on a towing dolly. 302 WHAT TO DO IN EMERGENCIES TOWING A DISABLED VEHICLE 2WD Models Only Provided the transmission is operable, tow only in N (Neutral) at speeds not exceeding 30 mph (48 km/h), for distances of not more than 15 miles (24 km). Towing at more than 30 mph (48 km/h) or for more than 15 miles (24 km) can cause severe transmission damage. If the transmission is not operable, or the vehicle must be towed faster than 30 mph (48 km/h) or farther than 15 miles (24 km), tow with all four wheels OFF the ground. Acceptable methods are to tow the vehicle on a flatbed or with one end of the vehicle raised and the other end on a towing dolly. Removing the driveshaft for towing is not recommended since this can allow fluid to drain from the transmission. MAINTAINING YOUR VEHICLE CONTENTS 䡵 2.4L Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . 306 䡵 3.7L Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . 307 䡵 2.8L Turbo Diesel Engine . . . . . . . . . . . . . . . . . 308 䡵 Onboard Diagnostic System — OBD II . . . . . . . . 309 ▫ Loose Fuel Filler Cap Message . . . . . . . . . . . . 309 䡵 Emissions Inspection And Maintenance Programs . . . . . . . . . . . . . . . . . . . . . . . . . . . . 310 䡵 Replacement Parts . . . . . . . . . . . . . . . . . . . . . . 311 䡵 Dealer Service . . . . . . . . . . . . . . . . . . . . . . . . . 312 䡵 Maintenance Procedures . . . . . . . . . . . . . . . . . . 312 ▫ Engine Oil . . . . . . . . . . . . . . . . . . . . . . . . . . 312 ▫ Drive Belts — Check Condition And Tension . . 316 ▫ Spark Plugs . . . . . . . . . . . . . . . . . . . . . . . . . 317 ▫ Catalytic Converter . . . . . . . . . . . . . . . . . . . . 317 ▫ Engine Timing Belt — 2.4L Engine . . . . . . . . . 319 ▫ Ignition Wiring System — 2.4L Engine . . . . . . 319 ▫ Crankcase Emission Control System . . . . . . . . 319 ▫ Air Cleaner Filter . . . . . . . . . . . . . . . . . . . . . 319 304 MAINTAINING YOUR VEHICLE ▫ Maintenance-Free Battery . . . . . . . . . . . . . . . . 320 ▫ Air Conditioner Maintenance . . . . . . . . . . . . . 321 ▫ Power Steering Fluid Check . . . . . . . . . . . . . . 322 ▫ Driveline And Steering Component Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . 322 ▫ Body Lubrication . . . . . . . . . . . . . . . . . . . . . 323 ▫ Windshield Wiper Blades . . . . . . . . . . . . . . . . 323 ▫ Windshield Washers . . . . . . . . . . . . . . . . . . . 324 ▫ Exhaust System . . . . . . . . . . . . . . . . . . . . . . 324 ▫ Cooling System . . . . . . . . . . . . . . . . . . . . . . . 325 ▫ Hoses And Vacuum/Vapor Harnesses . . . . . . . 330 ▫ Brake System . . . . . . . . . . . . . . . . . . . . . . . . 330 ▫ Automatic Transmission . . . . . . . . . . . . . . . . 333 ▫ Hydraulic Clutch Fluid — Manual Transmission . . . . . . . . . . . . . . . . . . 335 ▫ Manual Transmission . . . . . . . . . . . . . . . . . . 335 ▫ Transfer Case . . . . . . . . . . . . . . . . . . . . . . . . 336 ▫ Front/Rear Axle Fluid . . . . . . . . . . . . . . . . . . 337 ▫ Appearance Care And Protection From Corrosion . . . . . . . . . . . . . . . . . . . . . . . . . . . 337 . . . . . . . . . . . . . . . . . . . . . . . . . . . 342 ▫ Interior Fuses . . . . . . . . . . . . . . . . . . . . . . . . 342 ▫ Underhood Fuses 䡵 Fuse Panel (Power Distribution Center) . . . . . . . . . . . . . . 345 䡵 Vehicle Storage . . . . . . . . . . . . . . . . . . . . . . . . 349 䡵 Replacement Bulbs . . . . . . . . . . . . . . . . . . . . . . 350 䡵 Bulb Replacement . . . . . . . . . . . . . . . . . . . . . . 351 ▫ Head Light . . . . . . . . . . . . . . . . . . . . . . . . . . 351 ▫ Front Turn Signal . . . . . . . . . . . . . . . . . . . . . 352 ▫ Front Fog Light (Front Fascia Mounted) . . . . . 353 ▫ Light Bar . . . . . . . . . . . . . . . . . . . . . . . . . . . 354 ▫ Rear Tail, Stop, Turn Signal, And Back-Up Lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 355 MAINTAINING YOUR VEHICLE 305 ▫ Center High Mounted Stop Light (CHMSL) . . . 355 䡵 Fluid Capacities . . . . . . . . . . . . . . . . . . . . . . . . 356 䡵 Recommended Fluids, Lubricants And Genuine Parts . . . . . . . . . . . . . . . . . . . . . . . . . 357 ▫ Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 357 ▫ Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . 358 306 MAINTAINING YOUR VEHICLE 2.4L ENGINE 3.7L ENGINE MAINTAINING YOUR VEHICLE 307 308 MAINTAINING YOUR VEHICLE 2.8L TURBO DIESEL ENGINE ONBOARD DIAGNOSTIC SYSTEM — OBD II Your vehicle is equipped with a sophisticated onboard diagnostic system called OBD II. This system monitors the performance of the emissions, engine, and automatic transmission control systems. When these systems are operating properly, your vehicle will provide excellent performance and fuel economy, as well as engine emis- sions well within current government regulations. If any of these systems require service, the OBD II system will turn on the “Malfunction Indicator Light.” It will also store diagnostic codes and other information to assist your service technician in making repairs. Al- though your vehicle will usually be drivable and not need towing, see your dealer for service as soon as possible. MAINTAINING YOUR VEHICLE 309 CAUTION! • Prolonged driving with the “Malfunction Indicator Light” on could cause further damage to the emis- sion control system. It could also affect fuel economy and driveability. The vehicle must be serviced before any emissions tests can be performed. • If the “Malfunction Indicator Light” is flashing while the engine is running, severe catalytic con- verter damage and power loss will soon occur. Immediate service is required. Loose Fuel Filler Cap Message After fuel is added, the vehicle diagnostic system can determine if the fuel filler cap is loose, improperly installed, or damaged. A loose fuel filler cap message will be displayed in the instrument cluster. Tighten the gas cap until a ⬙clicking⬙ sound is heard. This is an indication 310 MAINTAINING YOUR VEHICLE that the gas cap is properly tightened. Press the odometer reset button to turn the message off. If the problem persists, the message will appear the next time the vehicle is started. This might indicate a damaged cap. If the problem is detected twice in a row, the system will turn on the Malfunction Indicator Light (MIL). Resolving the problem will turn the MIL light off. EMISSIONS INSPECTION AND MAINTENANCE PROGRAMS In some localities, it may be a legal requirement to pass an inspection of your vehicle’s emissions control system. Failure to pass could prevent vehicle registration. For states which have an I/M (Inspection and Maintenance) requirement, this check verifies the following: the MIL (Malfunction Indicator Lamp) is functioning and is not on when the engine is running,

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2005 Jeep Liberty Owners Manual