2009 Mercedes-benz M Class Owners Manual

or Reverse Lamp Right

Possible cause/consequence

Possible solution

The active Bi-Xenon headlamp system is malfunctioning.

X Contact an authorized Mercedes-Benz Center

as soon as possible.

The left or right backup lamp is malfunctioning.

X Replace the bulb as soon as possible

(Y page 354).

330

Vehicle status messages in the multifunction display

Practical hints

Possible cause/consequence

The left or right brake lamp is malfunctioning. Rear lamps with bulbs: A substitute bulb is being used. Rear lamps with LEDs: This message will only appear if all LEDs have stopped working.

The high-mounted brake lamp is malfunctioning. This message will only appear if all LEDs have stopped working.

Possible solution X Rear lamps with bulbs: Replace the bulb as

soon as possible (Y page 354).

X Rear lamps with LEDs: Contact an authorized

Mercedes-Benz Center as soon as possible.

X Contact an authorized Mercedes-Benz Center

as soon as possible.

The left or right front fog lamp is malfunctioning.

X Replace the bulb as soon as possible

(Y page 354).

The front left side or right side marker lamp is malfunctioning.

X Replace the bulb as soon as possible

(Y page 354).

Display messages . Brake Lamp Left or Brake Lamp Right

. 3rd Brake Lamp

. Front Foglamp Left

or Front Foglamp Right

. Marker Lamp Front

Left or Marker Lamp Front Right

331

Practical hints

Vehicle status messages in the multifunction display Display messages . Parking Lamp Front

Possible cause/consequence

The left or right front parking lamp is malfunctioning. A substitute bulb is being used.

Left or Parking Lamp Front Right

Possible solution

X Replace the bulb as soon as possible

(Y page 354).

. High Beam Left or High Beam Right

The left or right high-beam lamp is malfunctioning.

X Halogen headlamp: Replace the bulb as soon

as possible (Y page 357).

X Bi-Xenon headlamp: Contact an authorized Mercedes-Benz Center as soon as possible.

. License Plate Lamp

Left or License Plate Lamp Right

The left or right license plate lamp is malfunctioning.

X Replace the bulb as soon as possible

(Y page 354).

. AUTO Light Inoperative

The light sensor is malfunctioning. The headlamps come on automatically.

X Contact an authorized Mercedes-Benz Center

as soon as possible.

To switch off the headlamps (U.S. vehicles only): X In the control system, set daytime running

lamp mode to manual (Y page 155).

X Switch off the headlamps using the exterior

lamp switch (Y page 109).

332

Vehicle status messages in the multifunction display

Practical hints

Display messages . Low Beam Left or Low Beam Right

Possible cause/consequence

The left or right low-beam lamp is malfunctioning.

. Foglamp Rear Left

. Switch Off Lights

. Tail Lamp Left or Tail Lamp Right

The rear fog lamp is malfunctioning. Rear lamps with LEDs: A substitute bulb is being used.

You have removed the SmartKey from the starter switch, opened the driver’s door and left the headlamps on or removed the SmartKey with KEYLESS-GO from the vehicle and left the headlamps on.

The left or right tail lamp is malfunctioning. Rear lamps with bulbs: A substitute bulb is being used. Rear lamps with LEDs: This message will only appear if all LEDs have stopped working.

Possible solution X Halogen headlamp: Replace the bulb as soon

as possible (Y page 354).

X Bi-Xenon headlamp: Contact an authorized Mercedes-Benz Center as soon as possible.

X Replace the bulb as soon as possible

(Y page 354).

X Turn the exterior lamp switch to M or

U (Y page 109).

or X With the rear fog lamp switched on: Push in

the exterior lamp switch to its stop.

X Rear lamps with bulbs: Replace the bulb as

soon as possible (Y page 354).

X Rear lamps with LEDs: Contact an authorized

Mercedes-Benz Center as soon as possible.

333

Practical hints

Vehicle status messages in the multifunction display Display messages . Cornering Lamp

Possible cause/consequence

The left or right corner-illuminating front fog lamp is malfunctioning.

Left or Cornering Lamp Right

Possible solution

X Replace the bulb as soon as possible

(Y page 354).

The left or right trailer brake lamp is malfunctioning.

The left or right trailer tail lamp is malfunctioning.

X Replace the bulb as soon as possible.

X Replace the bulb as soon as possible.

The left or right trailer turn signal lamp is malfunctioning.

X Replace the bulb as soon as possible.

The left or right rear turn signal lamp is malfunctioning. A substitute bulb is being used.

X Rear lamps with bulbs: Replace the bulb as

soon as possible (Y page 354).

X Rear lamps with LEDs: Contact an authorized

Mercedes-Benz Center as soon as possible.

. Trailer Brake Lamp

. Trailer Tail Lamp

Left or Trailer Tail Lamp Right

. Trailer Turn Signal Left or Trailer Turn Signal Right

. Turn Signal Rear

Left or Turn Signal Rear Right

334

Display messages . Turn Signal Front

Left or Turn Signal Front Right

. Turn Signal Left

Mirror or Turn Signal Right Mirror

Tires

Display messages H Tire pressure(s)

Please Correct

H Tire Pressure Caution: Tire Defect

Vehicle status messages in the multifunction display

Practical hints

Possible cause/consequence

Possible solution

The left or right front turn signal lamp is malfunctioning. A substitute bulb is being used.

X Replace the bulb as soon as possible

(Y page 357).

The turn signal in the left or right exterior rear view mirror is malfunctioning. This message will only appear if all LEDs have stopped working.

X Contact an authorized Mercedes-Benz Center

as soon as possible.

Possible cause/consequence

Possible solution

The tire pressure is too low in one or more tires. or The tire pressure of the individual tires differ from each other significantly.

One or more tires are deflating.

X Check and correct tire inflation pressure as

required (Y page 253).

X Carefully bring the vehicle to a halt, avoiding

abrupt steering and braking maneuvers.

X If necessary, change the wheel (Y page 366).

335

Practical hints

Vehicle status messages in the multifunction display Display messages H Tire Pressure

Check Tires

Possible cause/consequence

The tire pressure in one or more tires is already below the minimum value.

Possible solution

X Carefully bring the vehicle to a halt, avoiding

abrupt steering and braking maneuvers.

X Check and adjust tire pressure as required. X If necessary, change the wheel (Y page 366).

G Warning! Do not drive with a flat tire. A flat tire affects the ability to steer or brake the vehicle. You may lose control of the vehicle. Continued driving with a flat tire will cause excessive heat build-up and possibly a fire. G Warning! Follow recommended tire inflation pressures. Do not underinflate tires. Underinflated tires wear excessively and/or unevenly, adversely affect handling and fuel economy, and are more likely to fail from being overheated. Do not overinflate tires. Overinflated tires can adversely affect handling and ride comfort, wear unevenly, increase stopping distance, and result in sudden deflation (blowout) because they are more likely to become punctured or damaged by road debris, potholes etc.

336

What to do if … Lamps in instrument cluster

Notes If any of the following lamps in the instrument cluster fails to come on during the bulb self-

check when switching on the ignition, have the respective bulb checked and replaced if necessary. When you switch on the ignition, all lamps (except high-beam headlamp indicator lamp, and turn signal indicator lamps unless activated) in the instrument cluster come on. If a lamp in the instrument cluster fails to come on when the ignition is switched on, have it checked and replaced if necessary.

Practical hints

What to do if …

337

Practical hints

What to do if … Brake

Problem

Possible cause/consequence

Suggested solutions

The ABS has detected a malfunction and switched off. The BAS, ESP®, EBP and Electronic Traction System (4-ETS) are also switched off (see messages in multifunction display). The brake system is still functioning normally but without the systems specified above available. If the ABS control unit is malfunctioning, other systems such as the navigation system or the automatic transmission may also be malfunctioning.

The ABS has switched off due to insufficient power supply. The battery might not be charged sufficiently.

- The yellow ABS indicator lamp comes on while the engine is running.

- The yellow ABS indicator lamp comes on while the engine is running.

338

X Continue driving with added caution. Wheels may lock during hard

braking, reducing steering capability.

X Read and observe messages that may appear in the multifunction

display (Y page 302).

X Have the system checked at an authorized Mercedes-Benz Center

as soon as possible.

Failure to follow these instructions increases the risk of an accident.

When the voltage is above the required value again, the ABS is operational again and the ABS indicator lamp should go out. X If the ABS indicator lamp does not go out: Have the alternator and

the battery checked.

Problem

Possible cause/consequence

Suggested solutions

Practical hints

What to do if …

- The yellow ABS indicator lamp comes on while the engine is running.

; (USA only) 3 (Canada only) The red brake warning lamp comes on while driving. In addition, the yellow ABS malfunction indicator lamp, and the yellow ESP® warning lamp come on and an acoustic warning sounds.

; (USA only) 3 (Canada only) The red brake warning lamp comes on while driving and you hear a warning sound.

The self-diagnosis has not yet been completed yet.

The indicator lamp will go out after driving a short distance at a vehicle speed of above 12 mph (20 km/h).

The Electronic Brake Proportioning (EBP) switched off due to a malfunction. The ABS, the BAS, and the ESP® are also switched off.

X Have the system checked at an authorized Mercedes-Benz Center

as soon as possible.

Failure to follow these instructions increases the risk of an accident.

You are driving with the parking brake engaged.

X Release the parking brake.

339

Practical hints

What to do if … Problem

; (USA only) 3 (Canada only) The red brake warning lamp comes on while the engine is running and you hear a warning sound.

Possible cause/consequence

Suggested solutions

There is insufficient brake fluid in the reservoir.

X Risk of accident! Do not drive any further. Stop the vehicle in a safe

location as soon as it is safe to do so.

X Engage the parking brake. X Read and observe messages that may appear in the multifunction

display (Y page 302).

X Contact an authorized Mercedes-Benz Center. Do not add brake

fluid! This will not solve the problem.

G Warning! Driving with the brake warning lamp illuminated can result in an accident. Have your brake system checked immediately if the brake warning lamp stays on. Do not add brake fluid before checking the brake system. Overfilling the brake fluid reservoir can result in spilling brake fluid on hot engine parts and the brake fluid catching fire. You can be seriously burned.

! If you find that the brake fluid in the brake fluid reservoir has fallen to the minimum mark or below, have the brake system checked for

brake pad thickness and leaks.

340

Practical hints

What to do if …

Safety systems

Problem

< The red seat belt telltale comes on for a maximum of 6 seconds after starting the engine.

< You hear a warning chime

for a maximum of 6 seconds after starting the engine.

< The red seat belt telltale

comes on while the vehicle is standing still and the engine is running or during driving.

Possible cause/consequence

Suggested solutions

The seat belt telltale reminds you and your passengers to fasten your seat belts before driving off.

X Fasten your seat belts. Regardless of whether the seat belts are fastened or not, the seat belt telltale always comes on and remains lit for 6 seconds after starting the engine.

You have forgotten to fasten your seat belt.

X Fasten your seat belt.

The warning chime stops sounding.

You and/or your front passenger have forgotten to fasten your seat belts.

There are items placed on the front passenger seat and therefore the system senses the front passenger seat as being occupied.

X Fasten your seat belts.

The seat belt telltale goes out.

X Remove the items from the front passenger seat and put them in

a safe place. The seat belt telltale goes out.

341

Practical hints

What to do if … Problem

< During driving the red seat

belt telltale flashes and you additionally hear an intermittent warning chime with increasing intensity.

Possible cause/consequence

Suggested solutions

The vehicle’s speed once exceeded 15 mph (25 km/h) and you and/or your front passenger have forgotten to fasten your seat belts.

There are items placed on the front passenger seat and therefore the system senses the front passenger seat as being occupied.

X Fasten your seat belts.

The seat belt telltale goes out and the warning chime stops sounding.

X Remove the items from the front passenger seat and put them in

a safe place. The seat belt telltale goes out and the warning chime stops sounding.

i After 60 seconds with an unfastened seat belt the warning chime stops sounding and the seat belt telltale illuminates continuously. The seat belt telltale will only go out if both, the driver and front passenger’s seat belt are fastened, or the vehicle is standing still and a front door is opened. Problem

Possible cause/consequence

Suggested solutions

1 The red SRS indicator lamp comes on while driving.

There is a malfunction in the restraint systems. The air bags or Emergency Tensioning Devices (ETDs) could deploy unexpectedly or fail to activate in an accident.

X Drive with added caution to the nearest authorized Mercedes-Benz

Center.

342

Practical hints

What to do if …

G Warning! In the event a malfunction of the SRS is indicated as outlined above, the SRS may not be operational. For your safety, we strongly recommend that you contact an authorized Mercedes-Benz Center immediately to have the system checked. Otherwise the SRS may not be activated when needed in an accident, which could result in serious or fatal injury, or it might deploy unexpectedly and unnecessarily which could also result in injury.

Problem

Possible cause/consequence

Suggested solutions

v The yellow ESP® warning lamp comes on while the engine is running.

The ESP® has been switched off. Risk of accident! When the ESP® is switched off it will not stabilize the vehicle if the system recognizes that the vehicle starts to skid or that a wheel is spinning.

v The yellow ESP® warning lamp comes on while the engine is running.

The ESP® is not operational due to a malfunction. Risk of accident!

X Switch the ESP® back on. Exceptions: (Y page 78).

X If leaving the ESP® switched off, adapt your speed and driving to

the prevailing road and weather conditions.

X If the ESP® cannot be switched back on: Have the system checked

at an authorized Mercedes-Benz Center as soon as possible.

X Read and Observe additional messages that may appear in the

multifunction display.

X Continue driving with added caution. X Adapt your speed and driving to the prevailing road and weather

conditions.

X Have the system checked at an authorized Mercedes-Benz Center

as soon as possible.

343

Possible cause/consequence

Suggested solutions

The ESP® or Electronic Traction System (4-ETS) has come into operation because of detected traction loss in at least one tire. The cruise control is deactivated.

X When driving off, apply as little throttle as possible. X While driving, ease up on the accelerator pedal. X Adapt your speed and driving to the prevailing road and weather

conditions.

X Do not deactivate the ESP®.

Exceptions: (Y page 78).

Failure to follow these instructions increases the risk of an accident.

Possible cause/consequence

Suggested solutions

The fuel level has gone below the reserve mark.

X Refuel at the next gas station.

Practical hints

What to do if … Problem

v The yellow ESP® warning lamp flashes while driving.

Vehicle

Problem

The yellow fuel tank reserve warning lamp in the fuel gauge comes on while driving.

344

Engine

Problem

? (USA only) ± (Canada only) The yellow engine malfunction indicator lamp comes on when the engine is running.

? (USA only) ± (Canada only) The yellow engine malfunction indicator lamp comes on when the engine is running.

Practical hints

What to do if …

Possible cause/consequence

Suggested solutions

There may be a malfunction in: RThe fuel management system RThe ignition system RThe emission control system RSystems which affect

emissions

Such malfunctions may result in excessive emissions values and may switch the engine to limp- home (emergency operation) mode.

A loss of pressure has been detected in the fuel system. The fuel cap may not be closed properly or the fuel system may be leaky.

Diesel engine: Your fuel tank was driven empty.

X Have the vehicle checked as soon as possible at an authorized

Mercedes-Benz Center.

i Some states may by law require you to visit a workshop as soon as the engine malfunction indicator lamp comes on. Check local requirements.

X Check the fuel cap (Y page 237). X If it is not closed properly: Close the fuel cap. X If it is closed properly: Have the fuel system checked by an

authorized Mercedes-Benz Center.

X After refueling, start, turn off and restart the engine three or four

times in succession. The limp-home mode is canceled. You do not need to have your vehicle checked.

345

Practical hints

What to do if … Tires

Problem

H USA only:

Combination low tire pressure telltale/TPMS malfunction telltale for the TPMS illuminates continuously.

H USA only:

Combination low tire pressure telltale/TPMS malfunction telltale for the TPMS flashes 60 seconds and then stays illuminated.

Possible cause/consequence

Suggested solutions

The TPMS detects a loss of pressure in at least one tire.

X Carefully bring the vehicle to a halt, avoiding abrupt steering and

braking maneuvers. Observe the traffic situation around you.

X Read and observe messages in the multifunction display

(Y page 302).

If the tire inflation pressure in the respective tire(s) has (have) been corrected, the combination low tire pressure/TPMS malfunction telltale goes out after a few minutes of driving.

There is a malfunction in the TPMS.

X Read and observe messages in the multifunction display

(Y page 302).

X Have the TPMS checked by an authorized Mercedes-Benz Center. After the malfunction has been remedied, the combination low tire pressure/TPMS malfunction telltale goes out after a few minutes of driving.

G Warning! Each tire, including the spare (if provided), should be checked every other week when cold and inflated to the inflation pressure recommended by the vehicle manufacturer on the Tire and Loading Information placard on the driver’s door B-pillar or, if available,

the tire inflation pressure label on the inside of the fuel filler flap. If your vehicle has tires of a different size than the size indicated on the Tire and Loading Information placard or, if available, the tire inflation pressure label, you should determine the proper tire inflation pressure for those tires.

As an added safety feature, your vehicle has been equipped with a tire pressure monitoring system (TPMS) that illuminates a low tire pressure telltale when one or more of your tires are significantly underinflated. Accordingly, when the low tire pressure telltale illuminates, you should stop and check your tires as soon as

346

Practical hints

What to do if …

Your vehicle has also been equipped with a TPMS malfunction indicator to indicate when the system is not operating properly. The TPMS malfunction indicator is combined with the low tire pressure telltale. When the system detects a malfunction, the telltale will flash for approximately 1 minute and then remain continuously illuminated. This sequence will continue upon subsequent vehicle start-ups as long as the malfunction exists. When the malfunction indicator is illuminated, the system may not be able to

detect or signal low tire pressure as intended. TPMS malfunctions may occur for a variety of reasons, including the installation of incompatible replacement or alternate tires or wheels on the vehicle that prevent the TPMS from functioning properly. Always check the TPMS malfunction telltale after replacing one or more tires or wheels on your vehicle to ensure that the replacement or alternate tires and wheels allow the TPMS to continue to function properly.

possible, and inflate them to the proper pressure. Driving on a significantly underinflated tire causes the tire to overheat and can lead to tire failure. Underinflation also reduces fuel efficiency and tire tread life, and may affect the vehicle’s handling and stopping ability. Please note that the TPMS is not a substitute for proper tire maintenance, and it is the driver’s responsibility to maintain correct tire pressure, even if underinflation has not reached the level to trigger illumination of the TPMS low tire pressure telltale. Lamp in center console

Problem

Possible cause/consequence

Suggested solutions

Canada only: 59
The indicator lamp illuminates and remains illuminated (Y page 58).

A BabySmartTM child seat is installed on the passenger seat. Therefore the front passenger front air bag is switched off.

The system is malfunctioning when there is no BabySmartTM child seat installed on the passenger seat.

X Have the system checked as soon as possible at an authorized

Mercedes-Benz Center.

347

Practical hints

What to do if … Problem

Canada only: 59
The indicator lamp does not illuminate or does not remain illuminated with a BabySmartTM child seat properly installed on the passenger seat.

USA only: 59
The indicator lamp illuminates and remains illuminated with the weight of a typical adult or someone larger than a small individual on the front passenger seat.

Possible cause/consequence

Suggested solutions

The system is malfunctioning.

The system is malfunctioning.

X Make sure there is nothing between seat cushion and child seat. X Check installation of the child seat (Y page 71). If the front passenger front air bag off indicator lamp remains out: X Have the system checked as soon as possible at an authorized

Mercedes-Benz Center.

Do not use the BabySmartTM restraint to transport children on the front passenger seat until the system has been repaired.

X Have the system checked as soon as possible at an authorized

Mercedes-Benz Center.

X Read and observe messages in the multifunction display and follow

corrective steps (Y page 302).

G Warning! If the 59 indicator lamp illuminates and remains illuminated with

the weight of a typical adult or someone larger than a small individual on the front

passenger seat, do not have any passenger use the front passenger seat until the system has been repaired.

348

Practical hints

What to do if …

Problem

Possible cause/consequence

Suggested solutions

USA only: 59
The indicator lamp does not illuminate and/or does not remain illuminated with the weight of a typical 12-month-old child in a standard child restraint or less on the front passenger seat.

The system is malfunctioning.

X Make sure there is nothing between seat cushion and child seat

and check installation of the child seat.

X Make sure no objects applying supplemental weight onto the seat

are present.

X Make sure no objects which apply forces to the seat are present

(e.g. objects such as books, briefcases etc. lodged behind or around the seat, head restraints pushing against roof etc.). The system may recognize such forces as supplemental weight.

X If the indicator lamp remains out, have the system checked as soon

as possible at an authorized Mercedes-Benz Center. Do not transport a child on the front passenger seat until the system has been repaired.

X Read and observe messages in the multifunction display and follow

corrective steps (Y page 302).

G Warning! If the 59 indicator lamp does not illuminate or remains out with the weight of a typical 12-month-old child in a standard child restraint or less on the front passenger seat, do not transport a child on the front passenger seat until the system has been repaired.

349

Practical hints

Unlocking/locking manually Unlocking/locking manually Unlocking the vehicle If you cannot unlock the vehicle with the SmartKey or with KEYLESS-GO, unlock the driver’s door using the mechanical key. i Unlocking the vehicle with the

mechanical key and opening the driver’s door will trigger the anti-theft alarm system. To cancel the alarm, insert the SmartKey in the starter switch.

Removing the mechanical key

1 Mechanical key locking tab 2 Mechanical key

350

X Move locking tab 1 in direction of arrow. X Slide mechanical key 2 out of the housing.

Unlocking the driver’s door

$ Unlocking 2 Mechanical key X Insert mechanical key 2 into the driver’s

door lock until it stops.

X Turn mechanical key 2 counterclockwise

to position $ and hold it there.

X Pull the door handle until the locking knob

moves up. The driver’s door is unlocked.

X Pull the door handle once more to open the

driver’s door.

Locking the vehicle If you cannot lock the vehicle with the SmartKey or with KEYLESS-GO, lock it as follows: X Close the front passenger door, the right

rear door and the tailgate.

X Open the driver’s door and the rear left

door.

X Press the central locking switch

(Y page 89). The locking knobs of the front passenger door and the rear doors move down.

X If the vehicle battery is disconnected or drained: Press down the locking knobs of the front passenger door and the rear doors manually.

X Exit the vehicle. X Close the driver’s door. X Enter the vehicle through the rear left door. X Press down the locking knob of the driver’s

door.

! To prevent inadvertent lockout, make

sure to have the SmartKey with you before proceeding with the next step. The next step will lock the vehicle.

X Exit the vehicle. X Close the rear left door.

The vehicle is locked.

i This procedure does not arm the anti-

theft alarm system, nor does it lock the fuel filler flap.

Unlocking and opening the tailgate If the tailgate can no longer be unlocked and opened using button k on the SmartKey or the KEYLESS-GO function, use the emergency release lever to unlock and open the tailgate. The emergency release lever is located on the inside of the tailgate.

2 Cover A minimum height clearance of 7.2 ft (2.20 m) is required to open the tailgate. ! Always make sure there is sufficient

overhead clearance.

X Remove cover 2 from the trim on the

tailgate.

X Push release lever 1 all the way to the left. X Lift the tailgate.

i If the vehicle has previously been locked

from the outside using the SmartKey or KEYLESS-GO, opening the tailgate from the inside using the emergency release lever will trigger the anti-theft alarm system. To cancel the alarm, do one of the following: RInsert the SmartKey in the starter switch. RPress button k or j on the

SmartKey.

In vehicles with KEYLESS-GO: RPull an outside door handle.

1 Emergency release lever

Practical hints

Unlocking/locking manually The SmartKey must be within 3 ft (1 m) of the vehicle.

RPress the KEYLESS-GO start/stop

button. The SmartKey must be inside the vehicle.

Fuel filler flap G Warning! Avoid contact with the vehicle walls as they may contain sharp edges. Otherwise, you could injure yourself while releasing the fuel filler flap. In case the central locking system does not release the fuel filler flap, you can open it manually. The fuel filler flap release is located behind a cover in the right side trim panel of the cargo compartment. X Open the tailgate (Y page 90). X Remove right side trim panel

(Y page 361).

351

Practical hints

Resetting activated head restraints

1 Fuel filler flap release X Pull yellow fuel filler flap release 1 in

direction of arrow. The fuel filler flap is unlocked.

X Open the fuel filler flap (Y page 237).

352

Resetting activated head restraints

If the active head restraints have been triggered in a rear-end collision, the active head restraints must be reset. You can tell that the active head restraints have been triggered when they have been moved forward and cannot be adjusted. G Warning! For safety reasons, have the active head restraints checked at an authorized Mercedes-Benz Center after a rear-end collision. G Warning! When pushing back the head restraint cushion, make sure your fingers do not become caught between the head restraint cushion and the cover. Failing to do so may lead to injury.

i Pressing the head restraint cushion back

requires high force. If you encounter difficulties when pushing the head restraint back, please have the procedure performed at an authorized Mercedes-Benz Center.

i For your convenience, we recommend that you have this work carried out at an authorized Mercedes-Benz Center.

1 Pull 2 Adjust downward 3 Press X Pull the top of the head restraint cushion in

direction of arrow 1 as far as it will go.

X Adjust the head restraint cushion

downward in direction of arrow 2 as far as it will go.

X Firmly press the top of the active head

restraint cushion towards the head

restraint cover in direction of arrow 3 until it engages.

X Repeat this procedure on the active head

restraint for the second front seat.

For information on active head restraints, see “Active head restraints” (Y page 66).

Replacing SmartKey batteries

If the batteries in the SmartKey are discharged, the vehicle can no longer be locked or unlocked. It is recommended to have the batteries replaced at an authorized Mercedes-Benz Center. G Warning! Batteries contain poisonous and corrosive substances. Therefore, keep the batteries out of reach of children. If a battery is swallowed, seek medical help immediately. G Warning SmartKey batteries contain perchlorate material, which may require special handling and regard for the environment. Check with your local government’s disposal guidelines. California residents, see www.dtsc.ca.gov/HazardousWaste/ Perchlorate/index.cfm. Batteries contain materials that can harm the environment if disposed of improperly. Recycling of batteries is the preferred method of disposal. Many states require sellers of batteries to accept old batteries for recycling.

Practical hints

Replacing SmartKey batteries When inserting the batteries, make sure they are clean and free of lint. When replacing batteries, always replace both batteries. i The required replacement batteries are

available at any authorized Mercedes-Benz Center.

Replacement batteries: Lithium, type CR 2025 or equivalent. X Remove the mechanical key from the

SmartKey (Y page 350).

1 Mechanical key 2 Battery compartment

353

Practical hints

Replacing bulbs X Insert mechanical key 1 into opening. X Press mechanical key 1 in direction of

arrow. Battery compartment 2 is unlatched. X Pull battery compartment 2 out of the

SmartKey housing.

3 Batteries 4 Contact springs X Pull out batteries 3. X Insert new batteries 3 under contact

springs 4 with the positive terminal (+) side facing up.

X Return battery compartment 2 into

SmartKey housing until it locks into place.

354

X Slide mechanical key 1 back into the

SmartKey.

X Check the operation of the SmartKey as

well as the KEYLESS-GO function.

Replacing bulbs Safety notes Safe vehicle operation depends on proper exterior lighting and signaling to a large degree. Correct headlamp adjustment is extremely important. Have headlamps checked and readjusted at regular intervals and when a bulb has been replaced. Contact an authorized Mercedes-Benz Center for headlamp adjustment. G Warning! Bulbs and bulb sockets can be very hot. Allow the lamp to cool down before changing a bulb. Keep bulbs out of reach of children. Halogen lamps contain pressurized gas. A bulb can explode if you: Rtouch or move it when hot Rdrop the bulb Rscratch the bulb Wear eye and hand protection. Because of high voltage in Xenon lamps, it is dangerous to replace the bulb or repair the lamp and its components. We

recommend that you have such work done by a qualified technician.

Bulbs

i If the headlamps or front fog lamps are fogged up on the inside as a result of high humidity, driving the vehicle a distance with the lights on should clear up the fogging.

Practical hints

Replacing bulbs

Front lamps

Lamp

1 Parking and standing

lamp

Type

W 5 W

2 Halogen headlamp:

H7 (55 W)

High-beam lamp/High- beam flasher lamp

Bi-Xenon headlamp: High-beam flasher lamp/High-beam flasher spot lamp

H7 (55 W)

3 Halogen headlamp:

Low beam

Bi-Xenon headlamp: Low and high beam26

H7 (55 W)

D1S-35 W

4 Additional turn signal

lamp

LED

5 Side marker lamp

WY 5 W

26 Vehicles with Bi-Xenon headlamps: Low beam and high beam use the same D1S-35 W lamp. Do not replace the Bi-Xenon bulbs yourself. Contact an authorized

Mercedes-Benz Center.

355

Practical hints

Replacing bulbs

Lamp

6 Turn signal lamp

7 Front fog lamp

Corner-illuminating front fog lamp

Rear lamps Vehicles with standard rear lamps

Lamp

8 High-mounted brake

lamp

9 Brake lamp

a Backup lamp

b Turn signal lamp

c Side marker lamp

Type

LED

P 21 W

P 21 W

PY 21 W

P 21 W

356

Type

3457 AK S-8

H11 (55 W)

H11 (55 W)

Lamp

d Tail lamp, parking and standing lamp, rear fog lamp (driver’s side only)

Type

P 21 W

e License plate lamps

C 5 W

Vehicles with LED rear lamps

Lamp

8 High-mounted brake

lamp

9 Brake lamp

a Backup lamp

b Turn signal lamp

c Side marker lamp

d Tail lamp, parking and

standing lamp

Type

LED

LED

W 16 W

LED

LED

LED

Rear fog lamp (driver’s side only) (two bulbs)

W 16 W

e License plate lamps

C 5 W

Notes on bulb replacement ROnly use 12 volt bulbs of the same type and

with the specified watt rating.

RSwitch the lights off before changing a bulb

to prevent short circuits.

RAlways use a clean lint-free cloth when

handling bulbs.

RYour hands should be dry and free of oil and

grease.

RIf the newly installed bulb does not come on, contact an authorized Mercedes-Benz Center.

Have the LEDs and bulbs for the following lamps replaced at an authorized Mercedes- Benz Center: RAdditional turn signal lamps in the exterior

rear view mirrors

RHigh-mounted brake lamp RBi-Xenon lamps RHigh-beam flasher spot lamp (vehicles with

Bi-Xenon headlamps only)

! Do not replace the LEDs yourself. You

could otherwise damage the LEDs or parts of the vehicle. Only have the LEDs replaced at an authorized Mercedes-Benz Center.

Replacing bulbs for front lamps Before you start to replace a bulb for a front lamp, do the following: X Switch off the ignition. X Turn the exterior lamp switch to position

M.

X Open the hood (Y page 239).

G Warning! Do not remove the cover for the Bi-Xenon headlamp. Because of high voltage in Xenon lamps, it is dangerous to replace the bulb or repair the lamp and its components. It is recommended to have such work done by a qualified technician.

Low-beam bulb (halogen headlamps only)

Practical hints

Replacing bulbs X Gently press the new bulb into bulb socket

6.

X Place bulb socket 6 back into the housing

and turn it clockwise until it engages.

X Align housing cover 1 and turn it

clockwise until it engages.

High-beam and high-beam flasher bulb (halogen headlamps)/high-beam flasher bulb (Bi-Xenon headlamps)

1 Housing cover for low-beam halogen or Bi-

Xenon headlamp

2 Housing cover for high-beam halogen

bulb (high beam and high-beam flasher) 3 Bulb socket for parking and standing lamp

bulb

4 Bulb socket for front turn signal lamp bulb 5 Bulb socket for side marker lamp bulb

6 Bulb socket for low-beam headlamp X Turn housing cover 1 counterclockwise

and remove it.

X Turn bulb socket 6 with the bulb counterclockwise and remove it.

X Pull the bulb out of bulb socket 6.

7 Bulb socket for high-beam headlamp X Turn housing cover 2 counterclockwise

and remove it.

X Turn bulb socket 7 with the bulb counterclockwise and remove it.

X Pull the bulb out of bulb socket 7.

357

Removing front fog lamp cover

Removing front fog lamp cover (vehicles with corner-illuminating front fog lamp) Corner-illuminating front fog lamp 1 is fixed to cover 3.

1 Cover 2 Front fog lamp X Insert a suitable object (e.g. a screwdriver) at point indicated by the arrow and pry out cover 1. Cover 1 is released.

X Swing cover 1 outwards and take it off.

1 Corner-illuminating front fog lamp 2 Screws 3 Cover X Remove screws 2. X Take off cover 3.

Practical hints

Replacing bulbs X Gently press the new bulb into bulb socket

7.

X Place bulb socket 7 back into the housing

and turn it clockwise until it engages.

X Align housing cover 2 and turn it

clockwise until it engages.

Parking and standing lamp bulb, front turn signal lamp bulb, side marker lamp bulb X Turn respective bulb socket 3, 4 or 5

(Y page 357) with the bulb counterclockwise and remove it.

X Pull the bulb out of the bulb socket. X Gently press the new bulb into the bulb

socket.

X Place bulb socket 3, 4 or 5 back into the housing and turn it clockwise until it engages.

Front fog lamp bulb ! If not done carefully and properly, damage

to the bumper can result. It is recommended to have this work carried out at an authorized Mercedes-Benz Center.

358

Removing front fog lamp cover (vehicles with AMG Sport Package and ML 63 AMG)

Accessing and replacing the front fog lamp bulb

Practical hints

Replacing bulbs

1 Cover 2 Front fog lamp A recess is located on the outer edge of cover 1 (indicated by arrow). ! Do not use sharp objects such as a screw

driver to remove the cover from the bumper, as this could damage it.

X Insert a flat, blunt plastic object into the

recess.

X Put a soft cloth as a cushion between the

object in the recess and the bumper.

X Pry out cover 1 carefully and pull it out.

Example illustration front fog lamp (vehicles with AMG Sport Package and ML 63 AMG similar) 1 Front fog lamp 2 Retaining screws X Remove retaining screws 2.

i Corner-illuminating front fog lamps fixed to cover 3 (Y page 358) do not have to be screwed off.

X Remove front fog lamp 1 from the

bumper.

X Pull electrical connector off.

3 Bulb socket for front fog lamp bulb X Turn bulb socket 3 with the bulb counterclockwise and remove it.

X Pull the bulb out of bulb socket 3. X Gently press the new bulb into bulb socket

3.

X Place bulb socket 3 back into the housing

and turn it clockwise until it engages.

X Plug in the electrical connector. Front fog lamps with separat cover: X Insert front fog lamp 1 into bumper. X Fasten retaining screws 2. X Reinsert the cover and press it in until it

engages.

359

Practical hints

Replacing bulbs Corner-illuminating front fog lamps fixed to cover: X Reinsert cover 3 (Y page 358) into

bumper.

X Fasten screws 2 (Y page 358).

Replacing bulbs for rear lamps Before you start to replace a bulb for a rear lamp, do the following: X Switch off the ignition. X Turn the exterior lamp switch to position

M.

Tail lamp unit To access the tail lamp units, you first have to remove the cover in the corresponding side trim panel of the cargo compartment. X Open the tailgate.

360

Opening the driver’s side trim panel

Removing storage compartment

1 Lock 2 Cover X Turn lock 1 by 90° in direction of the

arrow.

X Remove cover 2.

Example illustration storage compartment without sound system 1 Lock 2 Storage compartment X Remove everything from storage

compartment 2.

X Insert a suitable object such as a coin into

the slot of lock 1.

X Turn lock 1 by 90° in direction of the

arrow.

X Remove storage compartment 2.

Opening the passenger side trim panel

Replacing bulbs

Practical hints

Replacing bulbs

1 Lock 2 Cover X Insert a suitable object such as a coin into

the slot of lock 1.

X Turn lock 1 by 90° in direction of the

arrow.

X Remove cover 2.

Example illustration standard rear lamp passenger side 1 Brake lamp bulb socket 2 Backup lamp bulb socket 3 Tail lamp, parking and standing lamp and

rear fog lamp (driver’s side only) bulb socket

4 Side marker lamp bulb socket 5 Rear turn signal lamp bulb socket

Example illustration LED rear lamp passenger side 1 Backup lamp bulb socket 2 Rear fog lamp bulb sockets (driver’s side

only)

X Depending on which bulb needs to be

replaced, turn the respective bulb socket counterclockwise.

X Pull the bulb socket out of the housing. X Standard rear lamp: Gently press onto the bulb and turn it counterclockwise out of its bulb socket. LED rear lamp: Pull the bulb out of its bulb socket.

X Standard rear lamp: Gently press the new

bulb into its bulb socket and turn it clockwise until it engages.

361

Correct headlamp adjustment is extremely important. High beam adjustments simultaneously aim the low beam. To check and readjust a headlamp, follow the steps described: X Park the vehicle on a level surface 25 feet (7.6 m) from a vertical test screen or wall. X Make sure the vehicle has a normal tailgate

load.

X Switch on the low beam headlamps B. If the beam does not show a beam pattern as indicated in the figure left, then follow the steps below: X Open the hood (Y page 239).

Practical hints

Replacing bulbs

LED rear lamp: Gently press the new bulb into its bulb socket.

X Align the bulb socket and turn it clockwise. X Make sure the bulb socket is attached

properly.

X Close the respective cover in the cargo

compartment.

X Replace the bulb. X Reinstall lamp cover 2. X Retighten screws 1.

Adjusting headlamp aim

X Close the tailgate.

License plate lamps

1 V Vertical centerline 2 H Horizontal mounting height, measured

from the center

1 Screws 2 Lamp cover X Loosen screws 1 of lamp cover to be

removed.

X Remove lamp cover 2.

362

checked at an authorized Mercedes-Benz Center.

Practical hints

Replacing wiper blades

Replacing wiper blades Safety notes G Warning! For safety reasons, switch off wipers and remove SmartKey from starter switch (vehicles with KEYLESS-GO: Make sure the vehicle’s on-board electronics have status 0) before replacing a wiper blade. Otherwise, the wiper motor could suddenly turn on and cause injury. G Warning! Wiper blades are components that are subject to wear and tear. Replace the wiper blades twice a year, preferably in the spring and fall. Otherwise the windows will not be properly wiped. As a result, you may not be able to observe surrounding traffic conditions and could cause an accident.

! Never open the hood when a front wiper

arm is folded forward. Hold on to the wiper when folding a wiper arm back. If released, the force of the impact from the tensioning spring could crack the windshield or the rear window.

363

Example illustration headlamp driver’side 3 Headlamp vertical adjustment screw 4 Headlamp vertical adjustment screw X Always turn adjustment screws 3 and 4
simultaneously for vertical adjustment until the headlamp is adjusted as shown in 1. Turn clockwise for upward movement and counterclockwise for downward movement. Graduations: RScrew 3: 0.50° pitch RScrew 4: 0.67° pitch

The left and right headlamps must be adjusted individually. i If it is not possible to obtain a proper headlamp adjustment, have the system

Practical hints

Replacing wiper blades

Do not allow a wiper arm to contact the windshield glass or the rear window without a wiper blade inserted. Mercedes-Benz recommends that you have this work carried out at an authorized Mercedes-Benz Center.

X Remove the SmartKey from the starter

switch.

Vehicles with KEYLESS-GO: X Make sure the vehicle’s on-board

electronics have status 0 (Y page 95).

Removing wiper blades

Front wiper blades ! Do not pull on the wiper blade inserts.

They could tear.

X Fold the wiper arms forward until they

engage.

364

1 Wiper blade 2 Tab 3 Wiper arm X Press tabs 2 together. X Tilt wiper blade 1 away from wiper arm

3.

X Take off wiper blade 1 in direction of

arrow.

Rear wiper blade ! Do not pull on the wiper blade insert. It

could tear.

1 Wiper arm 2 Wiper blade X Fold wiper arm 1 away from the rear

window until it engages.

X Turn wiper blade 2 as far as it will go. X Hold wiper arm 1 and disengage wiper

blade 2 by carefully sliding it in direction of arrow.

X Remove wiper blade 2.

Installing wiper blades

Front wiper blades

X Check whether the wiper blade is securely

fastened.

X Fold the wiper arm backward to rest on the

windshield. Make sure you hold on to the wiper arm when folding it back.

! Make sure the wiper blades are properly installed. Improperly installed wiper blades may cause windshield damage.

Rear wiper blade

1 Wiper blade 2 Attachment 3 Guide tab 4 Opening X With guide tab 3 sliding into opening 4,

place wiper blade 1 onto wiper arm in direction of arrow.

X Fold wiper blade 1 towards wiper arm. Tabs 2 (Y page 364) must engage into both recesses of attachment 2.

1 Wiper arm 2 Wiper blade

Practical hints

Replacing wiper blades X Insert wiper blade 2 into wiper arm 1. X Hold wiper arm 1 and engage wiper blade 2 by pushing it in direction of arrow until it locks into place.

X Check whether the wiper blade is securely

fastened.

X Fold the wiper arm to rest on the rear

window. Make sure to hold on to the wiper when folding the wiper arm back.

! Make sure the wiper blade is properly installed. An improperly installed wiper blade may cause rear window damage.

365

Practical hints

Flat tire Flat tire Safety notes Your vehicle may be equipped with: Ra Minispare wheel Ra spare wheel with collapsible tire Ran MOExtended system (your vehicle does

not have a spare wheel)

Ra TIREFIT kit27 (your vehicle does not have

a spare wheel)

For information on your vehicle’s equipment, see “Rims and tires” (Y page 401). G Warning! The dimensions of the spare wheel are different from those of the road wheels. As a result, the vehicle handling characteristics change when driving with a spare wheel mounted. Adapt your driving style accordingly. The spare wheel is for temporary use only. When driving with spare wheel mounted, ensure proper tire inflation pressure and do not exceed a vehicle speed of 50 mph (80 km/h).

27 Canada only. 366

Contact the nearest authorized Mercedes- Benz Center as soon as possible to have the spare wheel replaced with a regular road wheel. Never operate the vehicle with more than one spare wheel mounted. Do not switch off the ESP® when a spare wheel is mounted. G Warning! Vehicles with air suspension program: Do not open or close any doors or the tailgate while mounting a spare wheel. The vehicle could rise or lower to a previously selected level. You or others could be injured as a result.

Preparing the vehicle X Vehicles with air suspension program:

Make sure the vehicle level is set to highway level (Y page 170).

X Park the vehicle in a safe distance from

moving traffic on a hard, flat surface when possible.

X Turn on the hazard warning flasher. X Turn the steering wheel so that the front wheels are in a straight-ahead position.

X Engage the parking brake. X Shift the automatic transmission into park

position P.

X Turn off the engine. X Remove the SmartKey from the starter

switch.

or X Vehicles with KEYLESS-GO: Open the

driver’s door (this puts the starter switch in position 0, same as with the SmartKey removed from the starter switch). The driver’s door can then be closed again. Open doors only when conditions are safe to do so.

X Vehicles with KEYLESS-GO: Remove the KEYLESS-GO start/stop button from the starter switch.

X Have any passenger exit the vehicle at a

safe distance from the roadway. Open doors only when conditions are safe to do so.

i Vehicles with spare wheel with collapsible

tire or TIREFIT only: You can use the power outlet in the second- row footwell to operate the electric air pump even when the ignition is switched off, e.g. in order to inflate the collapsible tire. An emergency shut-off feature is designed to prevent the vehicle’s on-board voltage from dropping below a minimum level. If the on-board voltage drops to this minimum level, the power outlets are switched off automatically to help preserve engine starting power.

Sealing tires with TIREFIT Small tire punctures, particularly those in the tread, can be sealed with TIREFIT. TIREFIT can be used in ambient temperatures down to -4‡ (-20†). G Warning! TIREFIT is a limited repair device. TIREFIT cannot be used for cuts or punctures larger than approximately 0.16 in (4 mm) and tire damage caused by driving with extremely low tire inflation pressure, or on a flat tire, or a damaged wheel. Do not drive the vehicle under such circumstances. Contact the nearest authorized Mercedes- Benz Center for assistance or call Roadside Assistance.

X Foreign objects (e.g. screws or nails) should not be removed from the tire.

X Take the TIREFIT kit, the sticker, and the

electric air pump out of the cargo compartment.

Practical hints

Flat tire

Two-part sticker 1 Sticker for instrument cluster 2 Sticker for wheel X Attach sticker part 1 where it will be easily

seen by the driver on the instrument cluster.

X Attach sticker part 2 to the damaged tire

(close to the tire valve).