2011 Acura MDX Owners Manual

—

Lightly applied

Forcefully applied

ꭧ: Depending on the circumstances, CMBS may not go through all of the alert stages before initiating the last stage.

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Collision Mitigation Braking System™ (CMBS™)

CMBS OFF Button CMBS OFF BUTTON

When you turn the ignition switch to the ON (II) position, the CMBS will be in the previously selected on or off

setting.

To switch the CMBS off, press the CMBS OFF button on the dashboard for about 1 second. When you do this, a beeper sounds, a CMBS indicator on the instrument panel comes on, and a CMBS OFF message appears on the multi- information display. To switch the system back on, press the button again for about 1 second.

Automatic Shut Off Any of the conditions below can cause the CMBS to shut off. When the system shuts off, the CMBS indicator in the instrument panel comes on, and a CHECK CMBS SYSTEM message appears on the multi-information display for about 5 seconds. ● An abnormal tire condition is detected (wrong tire size, flat tire, etc.).

● Extended off-road or mountainous

driving.

● Driving your vehicle with the

parking brake applied.

● Driving your vehicle in bad

weather (rain, fog, snow, etc.).

● A dirty radar sensor cover on the

front grille.

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Collision Mitigation Braking System™ (CMBS™)

The CMBS will automatically switch on again if the conditions that caused it to switch off are improved.

CMBS Indicator

CMBS INDICATOR

This indicator comes on for several seconds when you turn the ignition switch to the ON (II) position. It also comes on and stays on when you turn the CMBS off by pressing the CMBS OFF button. To switch the CMBS back on, make sure the vehicle is stopped and the ignition switch is in the ON (II) position, then press the CMBS OFF button for about 1 second.

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The CMBS indicator normally comes on under these conditions: ● When you manually switch off the

system.

● When the system shuts off

automatically.

● When you drive in bad weather

(rain, snow, fog, etc.).

● If anything covers the radar sensor

cover (dirt, mud, dry leaves, wet snow, etc.).

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Collision Mitigation Braking System™ (CMBS™)

● When the VSA system indicator

comes on (see page 467).

● When you turn the ignition switch to the ON (II) position, the CMBS indicator should come on for a few seconds, then go off. If the indicator comes on at any other time and a CHECK CMBS SYSTEM message appears on the multi-information display, there is a problem with the CMBS. You can still drive your vehicle, but CMBS will not be operating. Have your vehicle checked by a dealer.

Limitations The CMBS may not activate under some conditions. Here are a few examples: ● The distance between your vehicle and the vehicle ahead of you is too short.

● A vehicle cuts in front of you at a slow speed, or it brakes suddenly.

YOUR VEHICLE

● When you accelerate rapidly and approach the vehicle ahead of you at high speed.

● Immediately after you begin

driving.

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Collision Mitigation Braking System™ (CMBS™)

YOUR VEHICLE

YOUR VEHICLE

● Driving in heavy, stop-and-go

traffic.

● The vehicle ahead of you is a

motorcycle or other small vehicle.

● A vehicle suddenly crosses in front

of you.

The CMBS is not designed to detect pedestrians.

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This system is designed to detect and provide sufficient advanced warning of a collision. As a result, you may experience occasional false activations. Even with little or no chance of a collision, the CMBS may activate under these conditions: ● When you change lanes quickly, and go around the vehicle ahead of you.

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Collision Mitigation Braking System™ (CMBS™)

YOUR VEHICLE

LOW BRIDGE

● When you approach or pass a

vehicle ahead of you that is turning left or right in an intersection.

RAILS

● When you pass a low bridge at

high speed.

● When you approach train tracks.

● When you go over a sharp-edged

speed bump at high speed. ● When you go over areas of

construction on the road surface.

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Collision Mitigation Braking System™ (CMBS™)

Important Safety Reminder The main purpose of the CMBS is to reduce the severity of injuries caused by an unavoidable collision. While the CMBS may help to alert you and minimize the severity of a collision, it may not activate in every dangerous situation. Even with the CMBS, it is still your responsibility to operate the brake pedal and steering wheel appropriately, according to the driving conditions.

AsrequiredbytheFCC: ThisdevicecomplieswithPart15ofthe FCCrules.Operationissubjecttothe followingtwoconditions:(1)Thisdevice maynotcauseharmfulinterference,and (2)thisdevicemustacceptany interferencereceived,including interferencethatmaycauseundesired operation. Changesormodificationsnotexpressly approvedbythepartyresponsiblefor compliancecouldvoidtheuser's authoritytooperatetheequipment. ThisdevicecomplieswithIndustry CanadaStandardRSS-210. Operationissubjecttothefollowingtwo conditions:(1)thisdevicemaynotcause interference,and(2)thisdevicemust acceptanyinterferencethatmaycause undesiredoperationofthedevice.

YOUR VEHICLE

SIGN, POLE, etc.

Because of the road condition (curved, winding, etc.) or the state of your vehicle (turning angle, lane position, etc.), CMBS can sometimes mistake a stationary object (light pole, traffic sign, guard rail, etc.) as a vehicle ahead of you and temporarily operate. This is normal.

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Vehicle Stability Assist (VSA®), aka Electronic Stability Control (ESC), System

The vehicle stability assist (VSA) system helps to stabilize the vehicle during cornering if the vehicle turns more or less than desired. It also assists you in maintaining traction while accelerating on loose or slippery road surfaces. It does this by regulating the engine's output and by selectively applying the brakes. When VSA activates, you may notice that the engine does not respond to the accelerator in the same way it does at other times. There may also be some noise from the VSA hydraulic system. You will also see the VSA system indicator blink. The VSA system cannot enhance the vehicle's driving stability in all situations and does not control your vehicle's entire braking system. It is still your responsibility to drive and corner at reasonable speeds and to leave a sufficient margin of safety.

VSA Off Indicator

When VSA is off, the VSA off indicator comes on as reminder.

Vehicle Stability Assist (VSA) System Indicator

When VSA activates, you will see the VSA system indicator blink. If this indicator comes on while driving, pull to the side of the road when it is safe, and turn off the engine. Reset the system by restarting the engine. If the VSA system indicator stays on or comes back on while driving, have the VSA system inspected by your dealer. NOTE: The main function of the VSA system is generally known as Electronic Stability Control (ESC). The system also includes a traction control function.

If the indicator does not come on when the ignition switch is turned to the ON (II) position, there may be a problem with the VSA system. Have your dealer inspect your vehicle as soon as possible.

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Vehicle Stability Assist (VSA®), aka Electronic Stability Control (ESC), System

You will also see a ‘‘CHECK VSA SYSTEM’’ message on the multi- information display if there is a problem with the VSA system. If the low tire pressure/TPMS indicator comes on, or the multi- information display shows a ‘‘CHECK TPMS SYSTEM’’ message with the indicator flashing (see page 452), the VSA system automatically turns on even if the VSA system is turned off by pressing the VSA OFF switch. If this case, you cannot turn the VSA system off by pressing the VSA OFF switch again. Without VSA, your vehicle will have normal braking and cornering ability, but it will not have VSA traction and stability enhancement.

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VSA Off Switch

This switch is under the driver's side vent. To turn the VSA system on and off, press and hold it until you hear a beep. When VSA is off, the VSA off indicator comes on as a reminder. Press and hold the switch again. It turns the system back on. With the VSA off, the trailer stability assist function is also turned off (see page 492).

VSA is turned on every time you start the engine, even if you turned it off the last time you drove the vehicle. In certain unusual conditions when your vehicle gets stuck in shallow mud or fresh snow, it may be easier to free it with the VSA temporarily switched off. When the VSA system is off, the traction control system is also off. You should only attempt to free your vehicle with the VSA off if you are not able to free it when the VSA is on. Immediately after freeing your vehicle, be sure to switch the VSA on again. We do not recommend driving your vehicle with the VSA and traction control systems switched off.

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Vehicle Stability Assist (VSA®), aka Electronic Stability Control (ESC), System

VSA and Tire Sizes Driving with varying tire or wheel sizes may cause the VSA to malfunction. When replacing tires, make sure they are of the same size and type as your original tires (see page 539). If you install winter tires, make sure they are the same size as those that were originally supplied with your vehicle. Exercise the same caution during winter driving as you would if with VSA.

your vehicle was not equipped

Hill Start Assist Your vehicle is equipped with a hill start assist feature to help prevent the vehicle from rolling on steep inclines as you move your foot from the brake pedal to the accelerator. This feature starts operating a few seconds after you are in any drive gear position (when faced uphill) or in reverse (when faced downhill). This feature requires that the vehicle has come to a complete stop before it can work. Hill start assist may not hold a heavily loaded vehicle, such as when your vehicle is connected to a trailer, or prevent your vehicle from rolling downhill on a very steep or slippery slope.

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Blind Spot Information System (BSI)

U.S.AdvancePackage,Advance PackagewithEntertainment,and CanadianElitePackagemodels The blind spot information system (BSI) is designed to assist you when you are changing lanes.

If the system detects vehicles in adjacent lanes, it automatically illuminates the appropriate indicator to provide assistance when you change lanes. It is not a substitute for visual confirmation that it is safe to change lanes.

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Failure to visually confirm that it is safe to change lanes before doing so may result in a crash and serious injury or death. Do not rely only on the blind spot information system when changing lanes. Always look in your mirrors, to either side of your vehicle, and behind you for other vehicles before changing lanes.

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Blind Spot Information System (BSI)

BSI Operation

ALERT ZONE

A: Approximately 1.6 ft. (0.5m) B: Approximately 10 ft. (3m) C: Approximately 10 ft. (3m) BSI is designed to detect vehicles in specified alert zones adjacent to your vehicle, particularly in harder to see areas commonly known as ‘‘blind spots.’’

When BSI detects a vehicle in an alert zone, a BSI alert indicator comes on near the corresponding outside rearview mirror. While your vehicle is moving forward at a speed between 6 mph (10 km/h) and 100 mph (160 km/h), the BSI alert indicator comes on under either of the following conditions: ● Another vehicle overtakes you,

entering the alert zone from behind, at a speed that differs from your vehicle's speed by no more than 31
mph (50 km/h).

● You pass a vehicle at a speed that

differs from that vehicle's speed by no more than 12 mph (20 km/h). The indicator comes on approximately 2 seconds after the vehicle enters the alert zone.

The system will not alert you to all vehicles in blind spot zones (such as vehicles you have just passed which you should already be aware of) unless it remains in the alert zone for approximately 2 or more seconds. While the system is on, BSI is active whenever the shift lever is in the D or S position.

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Blind Spot Information System (BSI)

BSI INDICATOR

MULTI-INFORMATION DISPLAY

BSI ALERT INDICATOR LEFT SIDE RIGHT SIDE

BSI OFF BUTTON

U.S. model is shown

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Blind Spot Information System (BSI)

LEVER

INDICATOR

ILLUMINATE

BLINK

The BSI alert indicator starts to blink as a reminder if you move the turn signal lever in the direction of the detected vehicle.

Radar sensors, located underneath each corner of the rear bumper, detect objects. Do not cover this area with labels or stickers of any kind. Always keep this area is free of any kind of dirt every time you get in the vehicle. Impacts to the radar sensors or the area around them can affect system performance. If an impact occurs, have the system checked by your dealer.

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Blind Spot Information System (BSI)

Important Precautions Like all assistance systems, BSI has limitations. Over-reliance on BSI may result in a collision. Always look in your mirrors, to either side of your vehicle, and behind you for other vehicles before changing lanes.

The system should be turned off when towing a trailer. Due to the added mass and resulting changes in radar coverage, the system cannot operate as intended, and detection of the trailer itself by the radar sensors may cause the BSI alert indicators to

illuminate.

Limitations The BSI alert indicators may not illuminate under the following circumstances: ● The speed difference between

your vehicle and a vehicle approaching from behind is greater than 31 mph (50 km/h). ● A vehicle is parked in a side lane. ● The speed difference between

your vehicle and the vehicle you are passing is greater than 6 mph (10 km/h).

● An object not detected by the radar sensors approaches or passes your vehicle.

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BSI may be adversely affected under the following circumstances: ● When objects such as guard rails,

poles, trees, etc., are detected.

● When an object that doesn't reflect

radio waves well, such as a motorcycle, is in the alert zone.

● A vehicle is behind or approaching

your vehicle while on a curved road.

● When towing a trailer. ● A vehicle is moving from a far lane

to the adjacent lane.

● The system picks up external

electrical interference.

● The rear bumper has been

deformed, or improperly repaired.

Blind Spot Information System (BSI)

EXAMPLES

GUARD RAIL

POLE or TREE

MOTORCYCLE

●: BSI Alert indicator is on ○: BSI Alert indicator is off ● The orientation of the sensors has

been changed.

● Bad weather conditions, such as

heavy rain, snow and fog.

The system is for your convenience. Even if an object is within the alert zone, the system may not detect it, depending on its shape. Always look in your mirrors, to either side of your vehicle, and behind you for other vehicles before changing lanes.

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Blind Spot Information System (BSI)

BSI OFF Button

To turn the system on again, press the same button. The BSI indicator on the instrument panel turns off. The multi-information display indicates that the system is on. When the ignition switch is turned to the ON (II) position, the system will be in the previously selected ON or OFF setting.

To turn the system off, press the BSI OFF button when the ignition switch is in the ON (II) position. The BSI indicator on the instrument panel glows amber, indicating that the system is turned off. The multi- information display indicates that the system is off.

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Blind Spot Information System (BSI)

BSI Status Displays

System Status

Multi-information display message

BSI Indicator

Description

ON

OFF

ON/OFFꭧ

OFF

－

When you push the BSI OFF button, a BSI ON or OFF message is displayed on the multi-information display for about 5 seconds. The BSI indicator will remain on while the system is off. A chime sounds to indicate that the system has been turned ON or OFF.

If while driving, mud, snow, or ice accumulates in the vicinity of sensor: ● The system may shut down ● The BSI indicator illuminates, a message is displayed on the multi-information display, and a chime

sounds.

The BSI indicator will turn off and the system will return to normal once the obstacle is removed, and you begin to drive. Always keep the area around the radar sensors clean. BSI may not operate properly if the sensors are obstructed. The BSI alert indicator: ● May come on when a vehicle enters one of the alert zones, even if this message is displayed. ● May not come on due to obstruction (splashes, etc.), even if this message is not displayed. ꭧ: System status may remain on even when the BLIND SPOT NOT AVAILABLE message is

displayed.

If the system is faulty, the BSI indicator illuminates and a message is displayed on the multi- information display. Have your vehicle inspected by your Acura dealer.

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Blind Spot Information System (BSI), Active Damper System

Active Damper System Ifequipped The active damper system is always on, constantly adjusting your vehicle's dampers to the best settings for current road conditions along with vehicle speed and handling inputs.

The system uses electrically controlled dampers to enhance handling precision, vehicle composure, tire to road adhesion and rough road ride comfort isolation. The system reacts to inputs from various electronic sensors to give exactly the right amount of suspension damping to provide optimal ride comfort and handling.

AsrequiredbytheFCC: ThisdevicecomplieswithPart15ofthe FCCrules.Operationissubjecttothe followingtwoconditions:(1)Thisdevice maynotcauseharmfulinterference,and (2)thisdevicemustacceptany interferencereceived,including interferencethatmaycauseundesired operation. Changesormodificationsnotexpressly approvedbythepartyresponsiblefor compliancecouldvoidtheuser's authoritytooperatetheequipment. ThisdevicecomplieswithIndustry CanadaStandardRSS-210. Operationissubjecttothefollowingtwo conditions:(1)thisdevicemaynotcause interference,and(2)thisdevicemust acceptanyinterferencethatmaycause undesiredoperationofthedevice.

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Active Damper System

The system provides two selectable modes. Sport mode: The system prioritizes handling response, vehicle body control and tire-to-road adhesion to allow for higher performance handling. Comfort mode: The system prioritizes road isolation to allow for a more comfortable ride. Either mode can be used in any type of operating conditions, but the mode may change temporarily to suit a change in road surface.

To switch between comfort and sport mode, press and release the active damper system button located on the center console to choose the desired

mode.

When comfort mode is selected, the green indicator in the button comes on, and the message ‘‘COMFORT’’ will appear on the multi-information display for five seconds.

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Active Damper System

Active Damper System Indicator

If there is a problem with the active damper system, the active damper system shuts down and the active damper system indicator on the instrument panel comes on.

If you see this warning indicator and message, have your vehicle checked at your dealer as soon as possible. In this case, your vehicle still has the normal damper function, but it will not have the active damper function.

When sport mode is selected, the green indicator in the button goes off, and the message ‘‘SPORT’’ will appear on the multi-information display for five seconds.

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You will also see the ‘‘CHECK ADS SYSTEM’’ message appear on the multi-information display.

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Your vehicle has been designed primarily to carry passengers and their cargo. You can also use it to tow a trailer if you carefully observe the load limits, use the proper equipment, and follow the guidelines in this section. If your vehicle is equipped with the blind spot information system (BSI), do not use it when towing a trailer. For more information see page 476. Break-InPeriod Avoid towing a trailer during your vehicle's first 600 miles (1,000 km) (see page 418). Be sure to read the Off-Highway Driving Guidelines section on page 494 if you plan to tow off paved surfaces.

Towing a Trailer

Your vehicle is equipped with a trailer stability assist to help stabilize the vehicle/trailer combination by reducing the vehicle speed. For more information, see page 492.

Load Limit

Exceeding any load limit or improperly loading your vehicle and trailer can cause a crash in which you can be seriously hurt or killed.

Check the loading of your vehicle and trailer carefully before starting to drive.

TotalTrailerWeight The maximum allowable weight of the trailer and everything in or on it depends on the number of occupants in your vehicle and the type of trailer being towed (see page 484). Towing a trailer that is too heavy can seriously affect your vehicle's handling and performance. It can also damage the engine and drivetrain.

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Towing a Trailer

Gross Vehicle Weight Rating (GVWR) － The maximum allowable weight of the vehicle, all occupants, all accessories, all cargo and the tongue load is 5,952 lbs (2,700 kg). Gross Axle Weight Ratings (GAWR) － The maximum allowable weight of the vehicle, all occupants, all accessories, all cargo, and the tongue load must not exceed 2,888
lbs (1,310 kg) on the front axle, and 3,175 lbs (1,440 kg) on the rear axle. Gross Combined Weight Rating (GCWR) － The maximum allowable weight of the fully loaded vehicle and trailer is 10,053 lbs (4,560 kg) with the proper hitch. The GCWR must be reduced 2 percent for every 1,000
feet (305 meters) of elevation.

Estimating Loads The best way to confirm that all loads are within limits is to check them at a public scale. For public scales in your area, check your local phone book, or contact your trailer dealer or rental agency for assistance. To help ensure a safe drive to a scale, or if you cannot get to a public scale, we recommend that you estimate your total trailer weight and tongue load as described. ToEstimatetheTotalTrailerWeight Add the weight of your trailer (as quoted by the manufacturer) with everything in or on the trailer. Then check the tables on page 484 to make sure you do not exceed the limit for your conditions.

TongueLoad The weight that the tongue of a fully loaded trailer puts on the hitch should be 5 to 15 percent of the total trailer weight for boat trailers, and 8
to 15 percent of total trailer weight for all other trailers. (See page 484
for limits for your towing situation). Too much tongue load reduces front- tire traction and steering control. Too little tongue load can make the trailer unstable and cause it to sway.

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ToEstimatetheTongueLoad 1. Park the vehicle on level ground. 2. Measure and record the distance from the ground to the bottom of the trailer hitch.

3. Connect the fully loaded trailer to

the hitch.

4. Measure again from the ground to the same spot on the bottom of the hitch.

5. Subtract the second measurement from the first measurement, then refer to the following table.

OnmodelswithoutActiveDamper System

If the

difference is:

Estimated

tongue load is:

13/32’’ 11/16’’ 31/32’’ 1 1/4’’

150 lbs (68 kg) 250 lbs (114 kg) 350 lbs (159 kg) 450 lbs (205 kg)

Towing a Trailer

OnmodelswithActiveDamperSystem

If the

difference is:

Estimated

tongue load is:

1/2’’ 27/32’’ 1 5/32’’ 1 1/2’’

150 lbs (68 kg) 250 lbs (114 kg) 350 lbs (159 kg) 450 lbs (205 kg)

If the difference is more than 1 ꀨ inch, you have too much load on the tongue. Redistribute the load or remove cargo as needed.

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Towing a Trailer

Total Trailer Weight and Tongue Load Limits:

Number of Occupantsꭧ

Maximum Total Trailer Weight

Maximum Tongue Loadꭧꭧ

5,000 lbs (2,268 kg) 4,751 lbs (2,155 kg) 4,500 lbs (2,041 kg) 4,250 lbs (1,928 kg) 3,999 lbs (1,814 kg)

Towing is Not Recommended

500 lbs (227 kg) 470 lbs (213 kg) 370 lbs (168 kg) 276 lbs (125 kg) 150 lbs (68 kg)

ꭧ

The corresponding weight limits assume occupants fill seats from the front of the vehicle to the back, each occupant weighs 150 lbs (68 kg), and each has 15 lbs (7 kg) of cargo in the cargo area. Any additional weight, including cargo or accessories, reduces the maximum trailer weight and maximum tongue load. Never exceed the gross axle weight ratings (see page 481).

ꭧꭧ Recommended tongue load should be 5 － 15% of the total trailer weight for boat trailers, and 8 － 15% of the total trailer weight for

all other trailers.

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Towing a Trailer

public scale, the vehicle and

Checking Loads To accurately check your loads at the trailer all vehicle the

occupants should stay in the

should be fully loaded, and

while the attendant watches

scale.

1. Check the front gross axle weight.

Limit: 2,888 lbs (1,310 kg)

2. Check the gross vehicle weight.

Limit: 5,952 lbs (2,700 kg)

3. Check the rear gross axle weight.

Limit: 3,175 lbs (1,440 kg)

4. If you cannot weigh the rear axle

directly, you can calculate the rear gross axle weight by subtracting the weight in step 1 from the weight in step 2. Limit: 3,064 lbs (1,390 kg)

5. Check the gross combined weight.

Limit: 10,053 lbs (4,560 kg) Remember, maximum gross combined weight should be decreased 2% for every 1,000 feet (305 meters) of elevation.

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Towing a Trailer

6. Check the weight of the hitched trailer. Write this number down.

7. Check the weight of the unhitched

trailer. Limit: See page 484.

8. Calculate the tongue load. Subtract

the weight in step 6 from the weight in step 7. Limit: See page 484. Recommended: see page 481. Range: 5-15% for boat trailers 8-15% for other trailers

486

Towing Equipment and Accessories Towing generally requires a variety of supplemental equipment. To ensure the best quality, we recommend that you purchase Acura equipment whenever possible. Your dealer offers a trailer package that includes a hitch, a ball mount, and a wiring harness. Discuss any additional needs with your trailer sales or rental agency, and make sure all equipment is properly installed, maintained, and also meets state, federal, province, and local regulations.

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Hitch We strongly recommend that you have your dealer install a class 3
hitch. Using non-Acura equipment may result in serious damage to your vehicle. Read the trailer manufacturer's instructions, and select the appropriate draw bar for the height of the trailer you will be towing. WeightDistributingHitch A weight distributing hitch is not recommended for use with your vehicle, as an improperly adjusted weight distributing hitch may reduce handling, stability, and braking performance.

TrailerBrakes Acura recommends that any trailer with a total trailer weight of 1,000 lbs (450 kg) or more has its own brakes. There are two common types of trailer brakes: surge and electric. Surge brakes are common for boat trailers, since the brakes will get wet. If you choose electric brakes, be sure they are electronically actuated. Do not attempt to tap into your vehicle's hydraulic system. No matter how successful it may seem, any attempt to attach trailer brakes to your vehicle's hydraulic system will lower braking effectiveness and create a potential hazard. See your trailer dealer or rental agency for more information on installing electric brakes.

Towing a Trailer

A 4-pin gray connector is available as an option at your dealer. This connector has all of the circuits required to install most electric trailer brake controllers. A jumper harness to adapt your electric trailer brake controller to the vehicle is included with the optional Acura Genuine trailer hitch kit. To obtain a connector and a trailer hitch kit, see your dealer. Have a qualified mechanic install your trailer brake controller following the trailer brake controller manufacturer's instructions. Failure to properly install the trailer brake controller may increase the distance it takes for you to stop your vehicle when towing a trailer.

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Towing a Trailer

Use this illustration to identify each terminal in the trailer brake controller connector.

ELECTRIC BRAKE (YELLOW)

BRAKE (20A) (BLUE)

GROUND (BLACK)

STOP (LIGHT GREEN)

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SafetyChains Always use safety chains when you tow a trailer. Make sure the chains are secured to the trailer and hitch, and that they cross under the tongue and can catch the trailer if it becomes unhitched. Leave enough slack to allow the trailer to turn corners easily, but do not let the chains drag on the ground. SwayControl This device is recommended if your trailer tends to sway. Your trailer maker can tell you what kind of sway control you need and how to install it. TrailerMirrors Many states and provinces require special exterior mirrors when towing a trailer. Even if they don't, you should install special mirrors if you cannot clearly see behind you, or if the trailer creates a blind spot.

SpareTires When towing a trailer, we recommend that you carry a spare wheel and tire for full-size vehicle and trailer. See page your for 539 how to tire, and changing Remember to unhitch the trailer before changing a flat. Ask your trailer sales or rental agency whereand how to store the trailer's spare

tire size,page 545 for proper store full size wheel and page 545 for information on

flat tire.

tire.

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Trailer Lights

ACCESSORY OPTION

TRAILER BACK-UP LIGHT

ILLUMINATION LIGHTS

RIGHT TURN SIGNAL

LEFT TURN SIGNAL

BACK-UP LIGHT (ꭥ)

BRAKE DIAGNOSTIC

ELECTRIC BRAKE

TRAILER HAZARD LIGHT

ꬽB CHARGE

TAILLIGHTS

Trailer lights and equipment must comply with federal, state, province, and local regulations. Check trailer light requirements for the areas where you plan to tow, and use only equipment designed for your vehicle. Your vehicle is equipped with a connector to install an optional trailer lighting connector that mates with your vehicle. You can get this optional connector from your dealer.

Refer to the above illustration for wiring information. We recommend that you have your dealer install an Acura wiring harness and converter. This harness has been designed for your vehicle.

Towing a Trailer

If you use a non-Acura trailer lighting harness and converter, you can get the mating connector and pins that mate with the connector in your vehicle from your dealer. Since lighting and wiring vary with trailer type and brand, you should also have a qualified mechanic install a suitable connector between the vehicle and the trailer.

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● The lights and brakes on your

vehicle and the trailer are working properly.

● Your vehicle tires and spare are in

good condition and properly inflated.

● The trailer tires and spare are in

good condition and inflated as recommended by the trailer maker.

Driving Safely With a Trailer The added weight, length, and height of a trailer will affect your vehicle's handling and performance, so driving with a trailer requires some special driving skills and techniques. For your safety and the safety of others, take time to practice driving maneuvers before heading for the open road, and follow the guidelines in this section.

Towing a Trailer

Pre-Tow Checklist When preparing to tow, and before driving away, be sure to check the following: ● The vehicle has been properly

serviced, and the suspension and the cooling system are in good operating condition.

● The trailer has been properly

serviced and is in good condition.

● All weights and loads are within

limits.

● The hitch, safety chains, and any

other attachments are secure.

● All items on and in the trailer are properly secured and cannot shift while you drive.

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TowingSpeedsandGears Drive slower than normal in all driving situations, and obey posted speed limits for vehicles with trailers. Use the D position when towing a trailer on level roads. See ‘‘Drivingon Hills’’ for additional gear information. When towing a fixed-sided trailer (e. g., camper), do not exceed 55 mph (88 km/h). At higher speeds, the trailer may sway or affect vehicle handling.

If the automatic transmission fluid temperature increases and exceeds the specified limit, the A/T temperature indicator comes on (see page 70). You will also see a ‘‘A/T TEMP HIGH’’ message on the multi- information display. MakingTurnsandBraking Make turns more slowly and wider than normal. The trailer tracks a smaller arc than your vehicle, and it can hit or run over something the vehicle misses. Allow more time and distance for braking. Do not brake or turn suddenly as this could cause the trailer to jackknife or turn over.

Towing a Trailer

DrivingonHills When climbing hills, closely watch your temperature gauge. If it nears the red (Hot) mark, turn the air conditioning off, reduce speed and, if necessary, pull to the side of the road to let the engine cool. If you must stop when facing uphill, use the foot brake or parking brake. Do not try to hold the vehicle in place by pressing on the accelerator, as this can cause the automatic transmission to overheat. When driving down hills, reduce your speed and shift down to S position, or use the paddle shifters to lower gear (3 or 2) in the S position. When towing a trailer, do not ‘‘ride’’ the brakes, and remember, it takes longer to slow down and stop when towing a trailer.

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Towing a Trailer, Trailer Stability Assist

RetrievingaBoat If the vehicle tires slip when retrieving a boat from the water, keep the transmission in the D position and do not use the sequential sport shift mode. This prevents the transmission damage. Towing Your Vehicle Your vehicle is not designed to be towed behind a motor home. If your vehicle needs to be towed in an emergency, see page 566.

Trailer Stability Assist Your vehicle is equipped with trailer stability assist function. This function works on the same sensors as the vehicle stability assist (VSA) system. This function helps to stabilize the vehicle/trailer combination when the trailer severely sways or oscillates. For more information on the VSA system, see page 467. If the function detects vehicle/trailer instability, it checks if the swaying is caused by the trailer, and if the trailer swaying or oscillation is increasing. The vehicle/trailer combination is more affected by crosswinds, buffeting, and improper tongue load. These conditions can make the trailer unstable, and cause it to sway.

HandlingCrosswindsandBuffeting Crosswinds and air turbulence caused by passing trucks can disrupt your steering and cause the trailer to sway. When being passed by a large vehicle, keep a constant speed, and steer straight ahead. Do not try to make quick steering or braking corrections. BackingUp Always drive slowly and have someone guide you when backing up. Grip the bottomof the steering wheel, then turn the wheel to the left to get the trailer to move to the left. Turn the wheel to the right to move the trailer to the right. Parking Follow all normal precautions when parking, including putting the transmission in Park and firmly setting the parking brake. Also, place wheel chocks at each of the trailer's tires.

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Under these conditions, trailer stability assist begins to stabilize the vehicle/trailer combination by reducing the vehicle speed. The control unit sends signals to selectively apply the brakes and regulate the engine output. The brake lights of your vehicle will be turned on automatically by the system even if you do not keep the pressure on the brake pedal. When the brakes are applied, the trailer's brake lights come on along with the vehicle brake lights. When the trailer stability assist activates, you will see the VSA system indicator blink. There may also be some noise from the VSA hydraulic system.

Trailer stability assist cannot prevent a loss of control. Always reduce the vehicle speed and steer firmly. Do not brake suddenly or make quick steering motion. It could cause the trailer to jackknife or turn over and the system becomes ineffective. Trailer stability assist cannot prevent swaying that can occur in crosswinds and in normal and emergency driving maneuvers. It helps only to stabilize the vehicle/trailer combination in these conditions, after the oscillation becomes severe. Trailer stability assist will also be ineffective while driving at high speed or towing a trailer with a high center of gravity. Always obey the recommended speed limits for towing a trailer, see page 491.

Trailer Stability Assist

Trailer Stability Assist Failure

The control unit monitors the VSA circuitry and the braking system. If there is a problem with the brake lighting system, the trailer stability assist function shuts down and the ‘‘CHECK TRAILER STABILITY ASSIST’’ message appears on the multi-information display. If you see this message, have your vehicle checked at your dealer as soon as possible.

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Trailer Stability Assist, Off-Highway Driving Guidelines

In this case, your vehicle still has the VSA traction and stability enhancement, but it will not have the trailer stability assist function. If there is a problem with the VSA system, the system and trailer stability assist shuts off. The VSA system indicator also come on (see page 467). The ABS indicator and the brake system indicator may also come on along with the VSA system indicator. If you see these warning indicators, have your vehicle checked at your dealer as soon as possible.

If you turn off the VSA, the trailer stability assist function also shuts off. Press and hold the VSA off switch until you hear a beep (see page 468). The VSA off indicator comes on as a reminder. Press and hold the switch again to turn the system on. The function turns on every time you start the engine along with the VSA, even if you turned it off the last time you drove the vehicle.

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Off-Highway Driving Guidelines General Information Your vehicle has been designed primarily for use on pavement. But its higher ground clearance and super handling-all wheel drive (SH-AWD) system allow you to occasionally travel on unpaved roads, to campgrounds, picnic sites, and similar locations. It is not designed for trailblazing, mountain climbing, or other challenging off-road activities. If you decide to drive on unpaved roads, you will find that it requires somewhat different driving skills. Your vehicle will also handle somewhat differently than it does on pavement. Be sure to pay extra attention to the precautions and tips in this section, and get acquainted with your vehicle before leaving the

pavement.

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Off-Highway Driving Guidelines

Improperly operating this vehicle on or off-pavement can cause a crash or rollover in which you and your passengers could be seriously injured or killed. ● Follow all instructions and guidelines in this owner's manual.

● Keep your speed low, and

don't drive faster than conditions permit.

Important Safety Precautions To avoid loss of control or rollover, be sure to follow all precautions and recommendations. ● Be sure to store cargo properly

and do not exceed your cargo load limits (see page 429 and 481).

● Whenever you drive, make sure you and your passengers always wear seat belts.

● Keep your speed low, and never go

faster than the conditions allow.

● It's up to you to continually assess the situation and drive within the limits.

Check Out Your Vehicle Before you leave the pavement, be sure to do all scheduled maintenance and service, and inspect your vehicle for any problems. Pay special attention to the condition of the tires, and check the tire pressures. After you return to the pavement, carefully inspect your vehicle to make sure there is no damage that could make driving it unsafe. Recheck the condition of the tires and the tire pressures. Remember The route presents limits (too steep or bumpy roads). You have limits (driving skill and comfort). And your vehicle has limits (traction, stability, and power). Driving off-highway can be hazardous if you fail to recognize limits and take the proper precautions.

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Off-Highway Driving Guidelines

Accelerating and Braking For better traction on all surfaces, accelerate slowly and gradually build up speed. If you try to start too fast on wet soil, mud, snow, or ice, you might not have enough traction to get underway, and you may dig yourself a hole. Starting with the shift lever in the D position will help you have a smoother start on snow or ice. Keep in mind that you will usually need more time and distance to brake to a stop on unpaved surfaces. Avoid hard braking. Do not ‘‘pump’’ the brakes; let the anti-lock braking system pump them for you. Avoiding Obstacles Debris in the road can damage your suspension or other components. Because your vehicle has a high center of gravity, driving over a large obstacle, or allowing a wheel to drop into a deep hole can cause your vehicle to tip or roll over.

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Driving on Slopes If you can't clearly see all conditions or obstacles on a slope, walk the slope before you drive on it. If you have any doubt whether or not you can safely drive on the slope, don't do it. Find another route. If you are driving up a hill and find that you cannot continue, donottryto turnaround.Your vehicle could roll over. Slowly back down the hill, following the same route you took up the hill. Crossing a Stream Before driving through water, stop, get out if necessary, and make sure that: ● The water is not deep enough to cover your wheel hubs, axles, or exhaust pipe. You could stall and not be able to restart your engine. The water can also damage important vehicle components.

● The banks are sloped so you can

drive out.

● The water is not flowing too fast.

Deep rushing water can sweep you downstream. Even very shallow rushing water can wash the ground from under your tires and cause you to lose traction and possibly roll over.

● The banks and surface under the water provide good traction. The water may hide hazards such as rocks, holes, or mud.

If you decide it is safe to drive through water, choose a suitable speed, and proceed without shifting, changing speeds, stopping, or shutting off the engine. After driving through water, test your brakes. If they got wet, gently ‘‘pump’’ them while driving slowly until they operate normally.

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Off-Highway Driving Guidelines

If the water is deeper than the wheel hubs, some additional service may be required. This service is not covered by your warranties. If You Get Stuck If you get stuck, carefully try to go in the direction (forward or reverse) that you think will get you unstuck. Do not spin the tires at high speeds. It will not help you get out and may cause damage to the transmission or SH-AWD system. If you are still unable to free yourself, your vehicle is equipped with front and rear tow hooks designed for this purpose. Use a nylon strap to attach the MDX to the recovery vehicle and carefully take out the slack in the strap. Once the strap is tight, the recovery vehicle should apply force. Remember that the recovery vehicle needs good traction to avoid becoming stuck, too.

You should never use a jack to try to get unstuck. Your vehicle could easily slip off the jack and hurt you or someone else. Towing a Trailer Off-Road You may be able to safely tow a lightweight trailer (such as a motorcycle or small tent trailer) off- road if you follow these guidelines: ● Do not exceed 1,000 lbs (450 kg)

or a tongue weight of 100 lbs (45

kg).

● Stay on smooth, level dirt roads, and avoid driving in hilly terrain.

● Allow extra room for starting,

stopping, and turning.

● Slow down if you encounter bumps

or other obstacles.

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U.S. Vehicles: Maintenance, replacement, or repair of emissions control devices and systems may be done by any automotive repair establishment or individual using parts that are ‘‘certified’’ to EPA standards.

This section explains why it is important to keep your vehicle well maintained and how to follow basic maintenance safety precautions. This section also includes instructions on how to read the Maintenance Minder messages on the multi-information display, and instructions for simple maintenance tasks you may want to take care of yourself. If you have the skills and tools to perform more complex maintenance tasks on your vehicle, you may want to purchase the service manual. See page 589 for information on how to obtain a copy, or see your dealer.

Maintenance

Maintenance Safety..................... 500
Maintenance MinderTM ............... 501
Fluid Locations ........................... 509
Engine Compartment Cover........ 510
Adding Engine Oil ...................... 511
Changing the Engine Oil and

Filter ....................................... 512
Engine Coolant ........................... 514
Windshield Washers................... 516
Automatic Transmission Fluid .... 517
Brake Fluid................................. 519
Power Steering Fluid .................. 520
Timing Belt................................. 520
Lights.......................................... 521
Dust and Pollen Filter ................. 528
Cleaning the Seat Belts ............... 528
Floor Mats .................................. 529
Wiper Blades .............................. 530
Tires ........................................... 534
Checking the Battery .................. 541
Vehicle Storage........................... 542

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Maintenance Safety

All service items not detailed in this section should be performed by a certified technician or other qualified mechanic. Important Safety Precautions To eliminate potential hazards, read the instructions before you begin, and make sure you have the tools and skills required. ● Make sure your vehicle is parked on level ground, the parking brake is set, and the engine is off.

● To clean parts, use a commercially

available degreaser or parts cleaner, not gasoline.

● To reduce the possibility of fire or explosion, keep cigarettes, sparks, and flames away from the battery and all fuel-related parts.

500

● Wear eye protection and protective

clothing when working with the battery or compressed air.

Improperly maintaining this vehicle, or failing to correct a problem before driving can cause a crash in which you can be seriously hurt or killed.

Always follow the inspection and maintenance recommendations and schedules in this owner's manual.

Potential Vehicle Hazards ● Carbon Monoxide poison from engine exhaust. Be sure there is adequate ventilation whenever you operate the engine.

● Burns from hot parts. Let the engine and exhaust system cool down before touching any parts. ● Injury from moving parts. Do

not run the engine unless instructed to do so.

Failure to properly follow maintenance instructions and precautions can cause you to be seriously hurt or killed.

Always follow the procedures and precautions in this owner's manual.

Some of the most important safety precautions are given here. However, we cannot warn you of every conceivable hazard that can arise in performing maintenance. Only you can decide whether or not you should perform a given task.

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Maintenance MinderTM

One of the most convenient and important features of the multi- information display on your vehicle is the Maintenance Minder™. Based on engine operating conditions and accumulated engine revolutions, the onboard computer in your vehicle calculates the remaining engine oil life. The system also displays the code for other scheduled maintenance items needing service.

Engine Oil Life

REMAINING ENGINE OIL LIFE

To see the remaining engine oil life displayed on the multi-information display as a percentage, turn the ignition switch to the ON (II) position. Make sure the display shows blank, SH-AWD and tire pressure, and then press the SEL/RESET button on the