2009 Mercedes-benz CLK Class Coupe Owners Manual

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Display messages Ì Coolant

Stop vehicle, turn engine off.

Practical hints

Vehicle status messages in the multifunction display

Possible cause/consequence The poly-V-belt could be broken.

Possible solution X Stop the vehicle immediately as soon as it is

safe to do so.

X Turn off the engine immediately. X Check the poly-V-belt. X If it is broken: Do not continue to drive.

Otherwise the engine will overheat due to an inoperative water pump which may result in damage to the engine. Contact an authorized Mercedes-Benz Center.

X If it is intact: Do not continue to drive the

vehicle with this message displayed. Doing so could result in serious engine damage that is not covered by the Mercedes-Benz Limited Warranty.

Ì

The cooling fan for the coolant is malfunctioning.

X Observe the coolant temperature indicator in

the instrument cluster.

X Observe the coolant temperature indicator in

the instrument cluster.

X Drive to the nearest authorized Mercedes-Benz

Center immediately.

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Practical hints

Vehicle status messages in the multifunction display Display messages

Possible cause/consequence

The battery is no longer charging. Possible causes: Ralternator malfunctioning Rbroken poly-V-belt

Possible solution

If the coolant temperature is below 248‡ (120†), you may continue driving to an authorized Mercedes-Benz Center.

X Avoid placing heavy loads on the engine (e.g. by driving uphill) as well as stop-and-go traffic.

X Have the fan replaced as soon as possible. X Stop immediately in a safe location or as soon as it is safe to do so and check the poly-V-belt.

X If it is broken: Do not continue to drive.

Otherwise the engine will overheat due to an inoperative water pump which may result in damage to the engine. Contact an authorized Mercedes-Benz Center.

X If it is intact: Drive to the nearest authorized

Mercedes-Benz Center immediately. Adjust driving to be consistent with reduced braking responsiveness.

The battery has insufficient voltage.

X Start the engine.

The battery has insufficient voltage.

X Turn off unnecessary electrical consumers.

# Low Voltage

Charge Battery

# Low Voltage Switch Off Consumers

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Vehicle status messages in the multifunction display

Practical hints

Display messages N Check oil level at

next refueling.

Possible cause/consequence The engine oil has dropped to a critical level.

Possible solution X Check the engine oil level (Y page 230) and add

engine oil as required (Y page 231).

X If you must add engine oil frequently, have the

engine checked for possible leaks.

If the message Check oil level at next refueling. appears while the engine is running and at operating temperature, the engine oil level has dropped to approximately the minimum level. If this occurs, the warning is at first intermittent and then remains on if the oil level drops further. Display messages W Reserve Fuel

W Gas Cap Is Open

Visually check for oil leaks. If there are no obvious oil leaks, drive to the nearest service station to refill your engine oil to the required level. For information on approved engine oils contact an authorized Mercedes-Benz Center or visit www.mbusa.com (USA only).

! Engine oil level warnings should not be

ignored. Extended driving with the symbol displayed could result in serious engine damage that is not covered by the Mercedes-Benz Limited Warranty.

Possible cause/consequence The fuel level has dropped below the reserve mark. 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.

Possible solution X Refuel at the next gas station.

X Check the fuel cap (Y page 227). X If it is not closed properly: Close the fuel cap. X If it is closed properly: Have the fuel system

checked at an authorized Mercedes-Benz Center.

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Practical hints

Vehicle status messages in the multifunction display Lamps

Display messages . Active Headlamps

Inoperative

Possible cause/consequence The active Bi-Xenon cornering lamps system is malfunctioning.

Possible solution X Contact an authorized Mercedes-Benz Center

as soon as possible.

. Active Headlamps Auxiliary Bulb On

. Reverse Lamp Left or Reverse Lamp Right

. Brake Lamp Left or Brake Lamp Right

. 3rd Brake Lamp

. Front Foglamp Left

or Front Foglamp Right

The active Bi-Xenon headlamps are malfunctioning. Another light is being used. The left or right backup lamp is malfunctioning.

X Contact an authorized Mercedes-Benz Center

as soon as possible.

X Replace the bulb as soon as possible

(Y page 332).

The left or right brake lamp is malfunctioning.

X Replace the bulb as soon as possible

(Y page 332).

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

X Contact an authorized Mercedes-Benz Center

as soon as possible.

X Contact an authorized Mercedes-Benz Center

as soon as possible.

302

Practical hints

Vehicle status messages in the multifunction display

Possible cause/consequence The front left side or right side marker lamp is malfunctioning.

Possible solution X Contact an authorized Mercedes-Benz Center

as soon as possible.

The left or right front parking lamp is malfunctioning.

X Replace the bulb as soon as possible

(Y page 332).

The left or right high-beam lamp is malfunctioning.

X Replace the bulb as soon as possible

(Y page 332).

The left or right license plate lamp is malfunctioning.

X Replace the bulb as soon as possible

(Y page 332).

Display messages . Marker Lamp Front

Left or Marker Lamp Front Right

. Front Left Parking

Lamp or Front Right Parking Lamp

. High Beam Left or High Beam Right

. License Plate Lamp

Left or License Plate Lamp Right

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Practical hints

Vehicle status messages in the multifunction display Display messages . AUTO-Light Inoperative

Possible cause/consequence The light sensor is malfunctioning. The headlamps come on automatically.

Possible solution 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 136).

X Switch off the headlamps using the exterior

lamp switch (Y page 95).

. Low Beam Left or Low Beam Right

The left or right low-beam lamp is malfunctioning.

X Halogen headlamp: Replace the bulb as soon

as possible (Y page 332).

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

. Rear Foglamp

Auxiliary Bulb On . Switch Off Lights

. Switch Off Lights

Or Remove Key

The rear fog lamp is malfunctioning. A substitute bulb is being used.

X Replace the bulb as soon as possible

(Y page 332).

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 exterior lamp switch is set to U and you have forgotten to remove the SmartKey from the starter switch. The parking lamps remain switched on.

X Turn the exterior lamp switch to M or

U (Y page 95).

X Remove the SmartKey from the starter switch. or X Switch off the headlamps.

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Vehicle status messages in the multifunction display

Practical hints

Possible cause/consequence The left or right tail lamp is malfunctioning. A substitute bulb is being used.

Possible solution X Replace the bulb as soon as possible

(Y page 332).

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

X Replace the bulb as soon as possible

(Y page 332).

The left or right front turn signal lamp is malfunctioning.

X Replace the bulb as soon as possible

(Y page 332).

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.

Display messages . Tail Lamp Left

Auxiliary Bulb On or Tail Lamp Right Auxiliary Bulb On . Turn Signal Rear Left Auxiliary Bulb On or Turn Signal Rear Right Auxiliary Bulb On

. Front Left Turn

Signal or Front Right Turn Signal

. Left Mirror Turn

Signal or Right Mirror Turn Signal

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Practical hints

Vehicle status messages in the multifunction display Tires

Display messages H Please correct the

tire pressure.

H Tire Pressure

Caution Tire Defect

Possible cause/consequence 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.

H Tire Pressure

Check Tires

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

Possible solution X Check and correct tire inflation pressure as

required (Y page 242).

X Carefully bring the vehicle to a halt, avoiding

abrupt steering and braking maneuvers.

X If necessary, change the wheel (Y page 337). 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 337).

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.

306

Vehicle status messages in the multifunction display

Practical hints

307

Practical hints

What to do if … 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 low-beam headlamp indicator lamp, 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.

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Brake

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

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

Possible cause/consequence The ABS has detected a malfunction and switched off. The BAS and ESP® 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.

Practical hints

What to do if …

Suggested solutions 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

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

display (Y page 279).

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.

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Practical hints

What to do if … Problem - 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 and an acoustic warning sounds. ; (USA only) 3 (Canada only) The red brake warning lamp comes on while the engine is running.

Possible cause/consequence The ABS is temporarily not available. The ESP® and the BAS are also unavailable. The self-diagnosis has not been completed yet. The brake system is still functioning normally but without the systems specified above. You are driving with the parking brake engaged.

Suggested solutions The indicator lamp will go out after driving a short distance at a vehicle speed of above 12 mph (20 km/h). If the ABS indicator lamp does not go out: X Continue driving with added caution. 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.

X Release the parking brake.

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 279).

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.

310

What to do if … 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.

Practical hints

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

You have forgotten to fasten your seat belt.

Suggested solutions 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. 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.

311

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 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.

Suggested solutions 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 door is opened. Problem 1 The red SRS indicator lamp comes on while driving.

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

Center.

Possible cause/consequence 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.

G Warning! In the event a malfunction of the SRS is indicated as outlined above, the SRS may not be operational.

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What to do if … 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.

Practical hints

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

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

Possible cause/consequence 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. The cruise control is deactivated and cannot be switched on. The ESP® is not operational due to a malfunction. Risk of accident! The cruise control is deactivated and cannot be switched on.

Suggested solutions X Switch the ESP® back on. Exceptions: (Y page 67).

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.

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Practical hints

What to do if … Problem v The yellow ESP® warning lamp flashes while driving.

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

Suggested solutions 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®.

C The yellow roll bar warning lamp comes on or flickers when the engine is running.

The roll bar system is malfunctioning.

Exceptions: (Y page 67).

Failure to follow these instructions increases the risk of an accident. X Release the roll bars manually. X Have the system checked at an authorized Mercedes-Benz Center

as soon as possible.

Vehicle

Problem A The yellow fuel tank reserve warning lamp comes on when the engine is running.

Possible cause/consequence The fuel level has gone below the reserve mark.

Suggested solutions X Refuel at the next gas station.

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Engine

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

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

Possible cause/consequence 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.

Practical hints

What to do if …

Suggested solutions 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 227). 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.

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Practical hints

What to do if … Problem Ì The red coolant

temperature warning lamp comes on when the engine is running.

Ì The red coolant

temperature warning lamp comes on when the engine is running and an acoustic warning sounds.

Possible cause/consequence There is insufficient coolant in the reservoir. If this warning lamp comes on frequently, there is a leak in the cooling system. If the coolant level is correct, the electric radiator fan may be broken. The coolant temperature has exceeded 248‡ (120†).

Suggested solutions X Immediately add coolant to prevent engine from overheating

(Y page 232).

X Have the cooling system checked. X If the coolant temperature is below 248‡ (120†), you can

continue driving to the nearest authorized Mercedes-Benz Center. X Avoid high engine loads (e.g. driving uphill) and stop-and-go driving.

X Stop in a safe location as soon as possible and allow the engine

and coolant to cool down.

G Warning! Driving when your engine is overheated can cause some fluids which may have leaked into the engine compartment to catch fire. You could be seriously burned. Steam from an overheated engine can cause serious burns which can occur just

by opening the engine hood. Stay away from the engine if you see or hear steam coming from it. Stop the vehicle in a safe location away from other traffic. Turn off the engine, get out of the vehicle and do not stand near the vehicle until the engine has cooled down.

! The engine should not be operated with

the coolant temperature above 248‡ (120†). Doing so may cause serious damage which is not covered by the Mercedes-Benz Limited Warranty.

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Practical hints

What to do if …

Possible cause/consequence The TPMS detects a loss of pressure in at least one tire.

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

braking maneuvers. Observe the traffic situation around you.

There is a malfunction in the TPMS.

(Y page 279).

X Read and observe messages in the multifunction display

(Y page 279).

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. X Read and observe messages in the multifunction display

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.

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.

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 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.

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Practical hints

What to do if … 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. 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 cause/consequence The system is malfunctioning.

Suggested solutions 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 279).

Lamp in center console Problem

56
The front passenger front air bag off 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.

318

Practical hints

What to do if …

G Warning! If the 56 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.

Problem

56
The front passenger front air bag off 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.

Possible cause/consequence The system is malfunctioning.

Suggested solutions 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 If the front passenger front air bag off 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 279).

G Warning! If the 56 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.

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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 and the trunk using the mechanical key. i Unlocking the vehicle with the

mechanical key and opening the driver’s door or the trunk 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

320

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

Unlocking the driver’s door

Unlocking the trunk A minimum height clearance of 5.71 ft (1.74 m) (CLK coupe) or 5.41 ft (1.65 ) (CLK cabriolet) is required to open the trunk lid.

$ 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 $ until the locking knob moves up. The driver’s door is unlocked.

X Pull the door handle to open the driver’s

door.

X Turn mechanical key 2 back and remove

it from the driver’s door lock.

1 Mechanical key 2 Handle & Unlocking X Insert mechanical key 1 into the trunk lid

lock until it stops.

X Turn mechanical key 1 counterclockwise to position & and hold it in this position.

X Pull handle 2 and lift the trunk lid. ! The trunk lid swings open upwards

automatically. Always make sure there is sufficient overhead clearance.

X Turn mechanical key 1 back and remove

it from the trunk lid lock.

Locking the vehicle If you cannot lock the vehicle with the SmartKey or with KEYLESS-GO, lock it as follows: X Close the passenger door and the trunk. X Press the central locking switch

(Y page 77).

X Check to see whether the locking knob on

the passenger door has moved down. X If necessary, push it down manually. X Remove the mechanical key from the

SmartKey (Y page 320).

X Check whether the trunk is locked. X If it is not locked, lock it with the

mechanical key (Y page 82). Except for the driver’s door, the vehicle should now be locked.

Practical hints

Unlocking/locking manually Manually unlocking the gear selector lever If the vehicle’s electrical system is malfunctioning, the gear selector lever could remain locked in park position P. In this case the gear selector lever can be unlocked manually, e.g. to tow the vehicle.

1 Cover 2 Tool X Engage the parking brake. X Open cover 1. X Insert suitable tool 2 (e.g. a screwdriver)

into the opening.

321

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

door lock until it stops.

X Turn mechanical key 2 clockwise to

position $. The driver’s door is locked.

X Turn mechanical key 2 back and remove

it from the driver’s door lock.

i This procedure does not arm the anti-

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

Practical hints

Opening/closing in an emergency X Simultaneously push tool 2 downward and move the gear selector lever out of park position P. X Remove tool 2.

The gear selector lever is unlocked.

i The gear selector lever is locked again as soon as you move it back to park position P.

322

Opening/closing in an emergency Operating roll bars manually (cabriolet) Releasing roll bars manually If the roll bar system is malfunctioning, you can release the roll bars manually. G Warning! If the yellow roll bar warning lamp \ in the clock does not go out after starting the engine, or if it comes on while driving, then the roll bar system is not operating properly and may not activate in an accident. In this case, raise the roll bars manually before continuing to drive. For safety reasons, drive only with the roll bars raised until the malfunction is repaired. Have your vehicle checked at an authorized Mercedes-Benz Center.

i With the roll bars released, the soft top

cannot be operated using the soft top switch and the rear head restraints cannot be lowered using the rear head restraint lowering switch.

X Close the soft top (Y page 194). X Open the trunk (Y page 77).

X Fold back the luggage cover (Y page 197). X Take the hex wrench from the Mercedes-

Benz literature pouch.

1 Perforation X Push hex wrench through perforation 1 in

trim of rear wall in trunk. G Warning! Make sure no one is located in the roll bar’s path of motion while the next steps are being carried out. When the roll bar is manually released, the rear head restraints and the roll bar underneath shoot up almost instantaneously.

be lowered using the rear head restraint lowering switch. G Warning! Never lower the roll bars manually unless the soft top is open. Otherwise, the roll bars function could be impaired, no longer reducing your risk of injury in an optimal manner. Contact an authorized Mercedes-Benz Center to have the roll bar lowered when the soft top is closed.

1 Orientation seam 2 Hex wrench 3 Press wrench down 4 Press head restraint down

Practical hints

Opening/closing in an emergency X Take the hex wrench from the Mercedes-

Benz literature pouch.

X Align hex wrench so that its long side is

parallel to orientation seam 1 and insert hex wrench 2 into gap on left side of respective head restraint.

X Press hex wrench down firmly in direction

of arrow 3 and hold.

X Press head restraint down in direction of

arrow 4.

X Pull hex wrench 2 out and take weight off

head restraint.

X Repeat this procedure on roll bar for

second head restraint.

Soft top emergency operation (cabriolet) If the soft top cannot be automatically closed, check the following: RIs the luggage cover engaged in place

(Y page 197)?

RHave the roll bars been released? If so,

lower the roll bars manually (Y page 323).

RIs the trunk lid closed (Y page 79)? RIs there sufficient on-board voltage?

Start the engine if necessary.

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2 Hex wrench X Insert long side of hex wrench 2 into

opening.

X Using hex wrench 2, press release catch

down in direction of arrow. The roll bar extends with a loud sound. X Repeat this step for the second roll bar. Have the systems checked at an authorized Mercedes-Benz Center as soon as possible.

Lowering roll bars manually With the soft top open, you can lower the roll bars manually after they have been released. i With the roll bars released, the soft top

cannot be operated using the soft top switch and the rear head restraints cannot

X Engage the parking brake. X Lower the side windows. X Lower rear head restraints (Y page 89). i If the rear head restraints cannot be lowered using the rear head restraint lowering switch, the roll bars may have been released. For more information, see “Operating roll bars manually” (Y page 322).

X For safety reasons, remove SmartKey from

starter switch. X Open the trunk. X Remove the trunk floor cover. X Take the two straps for soft top emergency

operation out of vehicle tool kit (Y page 276).

X Take the hex wrench from the Mercedes-

Benz literature pouch.

X Open the left side trim panel in the trunk.

1 Locking mechanism X Pull locking mechanism 1 out until it stops and rotate it approximately one-quarter of a turn.

X Make sure the locking mechanism does not

retract again. If this happens, pull the locking mechanism out again and rotate it approximately one-quarter of a turn.

X Fold the right-hand side of the trunk floor

away.

Practical hints

Opening/closing in an emergency These messages will also appear in the multifunction display (Y page 293). If automatic operation still does not function properly, you can close the soft top manually. This procedure should be performed with great care by two persons. ! Manually closing the soft top is a

complicated and technically demanding procedure. Close the soft top manually in emergency cases only. Otherwise, visit an authorized Mercedes-Benz Center. Please read the instructions fully before beginning operation and only undertake it with another person and if you feel fully capable of performing the tasks involved. G Warning! RIt is important that a second person helps you. Otherwise, you could become trapped or injured.

RRemove any wristwatches or jewelry such as rings or bracelets. Otherwise, they could get caught in the vehicle mechanism, causing personal injury to yourself or damage to the vehicle. RAlways use the grips provided as

indicated. Otherwise you could injure yourself.

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Practical hints

Opening/closing in an emergency position, otherwise the hydraulic pump could be damaged.

X Pull locking mechanism 3 out until it stops and rotate it approximately one-quarter of a turn.

X Make sure the locking mechanism does not

retract again. If this happens, pull the locking mechanism out again and rotate it approximately one-quarter of a turn.

2 Trim X Detach trim 2 along the perforation.

3 Locking mechanism

4 Hex wrench 5 Screw of hydraulic pump X Insert hex wrench 4 into screw 5. X Turn hydraulic pump screw 5

counterclockwise one revolution with hex wrench 4.

! Do not operate the soft top switch with

screw of hydraulic pump in the opened

6 Lever 7 Soft top storage compartment hinge Soft top storage compartment hinges C are located on the left and right of the space between the soft top compartment cover and the trunk seal. X Pull two levers 6 apart and fold levers

6 of soft top storage compartment hinge 7 forward on both sides over the detent position.

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Practical hints

Opening/closing in an emergency

8 Strap X Pull strap 8, supplied in vehicle tool kit,

behind soft top storage compartment through hinge 7.

X Bring strap together in front of hinge. X Pull the side with the handle through the

loop on the opposite side.

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X Pull strap between soft top storage

compartment hinge and soft top compartment.

X Secure second strap to second hinge in the

same manner.

! Do not pull the straps when the trunk is

open.

Vehicles with KEYLESS-GO: To prevent a possible inadvertent lockout, the trunk lid will open automatically if a SmartKey with KEYLESS-GO is recognized in the area of the rear shelf or inside the trunk. ! The trunk lid must remain closed during the next steps in the procedure. Otherwise the trunk lid and the soft top compartment cover may come into contact with one another and be damaged. G Warning! At this point, the remaining procedure needs to be done by two people. Otherwise you could be injured.

X Place both straps on soft top compartment

cover.

X Take hex wrench out of trunk. X Close trunk lid. You will only have access to the trunk again when the emergency operation has been completed. Do not leave the SmartKey in the open trunk. You may lock yourself out.

X You and your assistant should each take

one of the straps by the handle.

X With a strong, simultaneous tug on the loops, pull soft top compartment cover upward and out to the rear.

If either you or your helper assume a different position, one or both of you could be trapped or injured.

X Pulling the cover back in one smooth

motion, lift soft top compartment cover 9 into a vertical position until it stops.

! Make sure the soft top storage

compartment hinges do not fold down during this procedure. Otherwise your vehicle could be damaged.

9 Soft top compartment cover X One person should stand on the left side of the vehicle and the other on the right side. G Warning! In the next step, you and your assistant should each take hold of the soft top compartment cover as shown in the illustration. Both of you should use your free hand to support yourselves on the edge of the trunk lid as shown in the illustration.

a Edge of soft top X From left and right sides, reach into soft top compartment underneath edge of soft top a.

Practical hints

Opening/closing in an emergency G Warning! Do not place your hands near the upper windshield area, trunk lid, or between soft top roof panels and hinges while the soft top is being raised and locked. Serious personal injury may occur.

b Windshield frame X Lift soft top out of soft top compartment

and pull it forward to windshield frame b.

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Practical hints

Opening/closing in an emergency

! Make sure you turn the hex wrench counterclockwise as far as it will go. Otherwise the soft top may not lock properly.

c Opening d Locking X Take off protective cap on the inner side of

the soft top.

X Insert hex wrench into soft top locking

mechanism screw.

X Turn the soft top locking mechanism screw with hex wrench clockwise in direction of arrow c as far as it will go. The clasp will open and the soft top will engage audibly.

X Turn the soft top locking mechanism screw

with hex wrench counterclockwise in direction of arrow I as far as it will go. The clasp will close and the soft top is now locked onto the windshield frame.

328

e Material tensioning frame f Soft top compartment cover X Lift material tensioning frame e into a

vertical position.

X Lower soft top compartment cover f. ! Make sure the soft top compartment

cover does not collide or make contact with the material tensioning frame.

g Soft top base X With the palm of your hand, press the

window in material tensioning frame e until it is positioned on soft top compartment cover f.

X You and your assistant should press soft top compartment cover f forward and

down with the palms of your hands until it snaps into place in the guide. Place your hands on the areas indicated by the arrows. At the same time, gently press material tensioning frame e down with the palms of your hands. G Warning! Position hands as indicated by arrows so that when you press soft top compartment cover forward and lower material tensioning frame, your hands cannot become trapped.

h Locking

X Insert hex wrench into soft top locking

mechanism screw.

X Turn the soft top locking mechanism screw

with hex wrench counterclockwise in direction of arrow h as far as it will go. The soft top is locked onto the windshield frame.

! Make sure you turn the hex wrench counterclockwise as far as it will go. Otherwise the soft top may not lock properly.

X Have the soft top operation checked at an authorized Mercedes-Benz Center as soon as possible.

! If, after completing the soft top

emergency operation, the trunk cannot be opened using the remote trunk lid release switch in the driver’s door, the i button on the SmartKey, or the trunk lid release handle in the license plate recess, press the soft top compartment cover down again as described above. Do not open the trunk with the emergency key, as this could otherwise damage the trunk lid and the soft top compartment cover.

Practical hints

Resetting activated head restraints 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.

! Be careful not to damage upholstery.

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

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Practical hints

Replacing SmartKey batteries

1 Reset tool 2 Rectangular opening 3 Press head restraint cushion X Take reset tool 1 out of the Mercedes-

Benz literature pouch.

X Guide reset tool 1 into rectangular

opening 2 between active head restraint cushion and head restraint cover.

X Press reset tool 1 downward in direction of arrow until you hear the head restraint release mechanism audibly engage.

X Pull out reset tool 1. X Firmly press the active head restraint cushion backward towards the head restraint cover in direction of arrow 3 until it engages.

330

X Repeat this procedure for the second front

seat.

X After resetting the active head restraints store reset tool 1 in the Mercedes-Benz literature pouch.

For information on active head restraints, see “Active head restraints” (Y page 56). For information on head restraint adjustment, see “Seats” (Y page 84).

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/provinces require

Practical hints

Replacing SmartKey batteries

X Slide mechanical key 1 back into the

SmartKey.

X Check the operation of the SmartKey as

well as the KEYLESS-GO function.

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.

sellers of batteries to accept old batteries for recycling. 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 320).

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.

1 Mechanical key 2 Battery compartment

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Practical hints

Replacing bulbs 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

332

the lamp and its components. We recommend that you have such work done by a qualified technician.

Bulbs

i Since replacing bulbs is a technically

highly demanding process, we recommend to have them replaced at an authorized Mercedes-Benz Center.

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.

Example illustration CLK coupe

Front lamps

Lamp

1 Additional turn signal

lamp

2 Turn signal lamp 3 Halogen headlamp:

Low beam Bi-Xenon headlamp: Low and high beam22

4 Halogen headlamp:

High beam/high-beam flasher Bi-Xenon headlamp: High-beam flasher Parking and standing lamp

5 Front fog lamp

Corner-illuminating front fog lamp

Type LED

1156 NA H7 (55 W)

D2S-35 W

H7 (55 W)

H7 (55 W)

W 5 W

H11 (55 W) H11 (55 W)

6 Side marker lamp

W 5 W

Rear lamps

Lamp

7 High-mounted brake

lamp

8 Brake lamp 9 Turn signal lamp a Tail lamp, parking and

standing lamp, side marker lamp b Backup lamp c License plate lamps d Tail lamp, rear fog lamp

(driver’s side only)

Type LED

P 21 W PY 21 W P 21/5 W

P 21 W C 5 W P 21/4 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.

Practical hints

Replacing 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.

i Mercedes-Benz recommends using

Longlife (LL) bulbs.

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 RBi-Xenon lamps RFront fog lamps RFront side marker lamps RHigh-mounted brake lamp ! 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.

22 Vehicles with Bi-Xenon headlamps: Low beam and high beam use the same D2S-35 W lamp. Do not replace the Bi-Xenon bulbs yourself. Contact an authorized

Mercedes-Benz Center.

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Practical hints

Replacing bulbs 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 229).

bulb or repair the lamp and its components. It is recommended to have such work done by a qualified technician.

3 Bulb socket for front turn signal lamp bulb 4 Bulb socket for low-beam headlamp bulb

(halogen headlamps only)

5 Bulb socket for high-beam headlamp/

high-beam flasher bulb

6 Bulb socket for parking and standing lamp

bulb

Low-beam bulb (halogen headlamps only) X Turn housing cover 1 counterclockwise

and remove it.

X Turn bulb socket 4 with the bulb counterclockwise and remove it.

1 Housing cover for low-beam halogen or Bi-

Xenon headlamp

2 Housing cover for high-beam headlamp/

high-beam flasher bulb and for parking and standing lamp bulb

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

334

X Pull the bulb out of bulb socket 4. X Gently press the new bulb into bulb socket

4.

X Place bulb socket 4 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) X Turn housing cover 2 counterclockwise

and remove it.

X Turn bulb socket 5 with the bulb counterclockwise and remove it.

X Pull the bulb out of bulb socket 5. X Gently press the new bulb into bulb socket

5.

X Place bulb socket 5 back into the housing

and turn it clockwise until it engages.

X Align housing cover 2 and turn it

clockwise until it engages.

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.

X Open the trunk.

Tail lamp unit X Swing the trim panel covering the

corresponding rear lights to the side.

Front turn signal lamp bulb X Turn bulb socket 3 with the bulb counterclockwise and remove it.

X Gently press onto the bulb and turn it

counterclockwise out of bulb socket 3.

X Gently press the new bulb into bulb socket 3 and turn it clockwise until it engages. X Place bulb socket 3 back into the housing

and turn it clockwise until it engages.

Parking and standing lamp bulb X Turn housing cover 2 counterclockwise

and remove it.

X Pull out bulb socket 6 with the bulb. X Pull the bulb out of bulb socket 6. X Gently press the new bulb into bulb socket

6.

X Reinstall bulb socket 6. X Align housing cover 2 and turn it

clockwise until it engages.

1 Connector 2 Tab

Practical hints

Replacing bulbs

X Disconnect electrical connector 1. X Pull tab 2 in the direction of the arrow. X Remove the bulb carrier.

Bulb carrier 3 Brake lamp 4 Backup lamp 5 Rear fog lamp (driver’s side)/tail lamp 6 Tail lamp, parking and standing lamp, side

marker lamp

7 Turn signal lamp X Depending on which bulb needs to be

replaced, gently press onto the respective bulb and turn it counterclockwise out of its bulb socket.

X Gently press the new bulb into its bulb

socket and turn clockwise until it engages.

335

Practical hints

Replacing wiper blades X Reinstall the bulb carrier and let tab 2

engage.

X Connect the electrical connector 1 until it

engages.

X Reinstall trim panel.

License plate lamps

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

removed.

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

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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 wiper arm is

folded forward. For your convenience, we recommend 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 83).

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

They could tear.

1 Unlocking 2 Tab X Pull tab 2 in the direction of arrow 1.