2011 Mercedes-benz GL Class Owners Manual

Display messages Turn Signal Front Left orTurn Signal Front Right Turn Signal Left Mirror orTurn Signal Right Mirror 3rd Brake Lamp

Brake Lamp Left orBrake Lamp Right

Tail Lamp Left orTail Lamp Right

High Beam Left orHigh Beam Right

Possible causes/consequences and M Solutions The front left-hand or front right-hand turn signal is faulty. X Check whether you are permitted to change the bulb yourself

(Y page 120).

or X Visit a qualified specialist workshop.

The turn signal in the left-hand and/or right-hand exterior mirror is faulty. X Check whether you are permitted to change the bulb yourself

(Y page 120).

or X Visit a qualified specialist workshop. The high-mounted brake lamp is faulty. X Check whether you are permitted to change the bulb yourself

(Y page 120).

or X Visit a qualified specialist workshop. The left or right-hand brake lamp is faulty. X Check whether you are permitted to change the bulb yourself

(Y page 120).

or X Visit a qualified specialist workshop. The left or right-hand tail lamp is faulty. X Check whether you are permitted to change the bulb yourself

(Y page 120).

or X Visit a qualified specialist workshop. The left or right-hand high beam is faulty. X Check whether you are permitted to change the bulb yourself

(Y page 120).

or X Visit a qualified specialist workshop.

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Display messages License Plate Lamp Left orLicense Plate Lamp Right Front Foglamp Left orFront Foglamp Right

Foglamp Rear Left orFoglamp Rear Right

Parking Lamp Front Left orParking Lamp Front Right Reverse Lamp Left orReverse Lamp Right

Marker Lamp Front Left orMarker Lamp Front Right

Possible causes/consequences and M Solutions The left or right-hand license plate lamp is faulty. The left or right-hand license plate lamp is faulty. X Check whether you are permitted to change the bulb yourself

(Y page 120).

or X Visit a qualified specialist workshop. The left-hand or right-hand front fog lamp is faulty. The left-hand or right-hand front fog lamp is faulty. X Check whether you are permitted to change the bulb yourself

(Y page 120).

or X Visit a qualified specialist workshop. The left-hand or right-hand rear fog lamp is faulty. X Check whether you are permitted to change the bulb yourself

(Y page 120).

or X Visit a qualified specialist workshop. The front left or front right standing lamp is faulty. X Check whether you are permitted to change the bulb yourself

(Y page 120).

or X Visit a qualified specialist workshop.

The left or right-hand backup lamp is faulty. X Check whether you are permitted to change the bulb yourself

(Y page 120).

or X Visit a qualified specialist workshop. The front left or right side marker lamp is faulty. X Check whether you are permitted to change the bulb yourself

(Y page 120).

or X Visit a qualified specialist workshop.

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Display messages Daytime Running Light Left orDaytime Running Light Right Active Headlamps Inoperative AUTO Light Inoperative

Switch Off Lights

Engine Display messages Top Up Coolant See Operator's Manual

Possible causes/consequences and M Solutions The left or right-hand daytime running light is defective. X Check whether you are permitted to change the bulb yourself

(Y page 120).

or X Visit a qualified specialist workshop.

The active light function is faulty. X Visit a qualified specialist workshop.

The light sensor is faulty. The low-beam headlamps are switched on. X USA only: switch off daytime driving lights in the on-board

computer (Y page 222).

X Switch the lights on and off using the light switch. X Visit a qualified specialist workshop. The lights are still switched on when you leave the vehicle. A warning tone also sounds. X Turn the light switch to $ or c. or X If the rear fog lamp is switched on: press the light switch in to

the stop.

Possible causes/consequences and M Solutions The coolant level is too low. X Add coolant, observing the warning notes before doing so

(Y page 297).

X If coolant needs adding more often than usual, have the engine

coolant system checked at a qualified specialist workshop.

G Warning Do not spill antifreeze on hot engine parts. Antifreeze contains ethylene glycol which may burn if it comes into contact with hot engine parts. You could be seriously burned.

! The coolant level is too low. Avoid making long journeys with too little coolant in the cooling

system. The engine will otherwise be damaged.

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The display messages and the corresponding symbol that indicate that the coolant level is too low must not be ignored. Display messages Coolant Stop car, switch engine off

Possible causes/consequences and M Solutions The coolant is too hot. X Pull over and stop the vehicle safely and switch off the engine,

paying attention to road and traffic conditions.

X Make sure that the air supply to the radiator is not blocked, e.g.

by snow, slush or ice.

X Wait until the display message disappears before restarting the

engine. Otherwise, there is a risk of engine damage.

X Pay attention to the coolant temperature display. X If the temperature increases again, visit a qualified specialist

workshop immediately.

The poly-V-belt may have torn. X Pull over and stop the vehicle safely and switch off the engine,

paying attention to road and traffic conditions.

X Open the hood. X Check whether the poly-V-belt is torn. If the poly-V-belt is torn: ! Do not continue driving. The engine could otherwise overheat. X Consult a qualified specialist workshop. If the poly-V-belt is OK: X Wait until the display message disappears before restarting the

engine. Otherwise, there is a risk of engine damage.

X Pay attention to the coolant temperature display. X Visit a qualified specialist workshop.

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.

! If the coolant temperature exceeds 248 ‡(120 †) do not continue driving. The engine will

otherwise be damaged.

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Display messages ? The engine fan is faulty.

Possible causes/consequences and M Solutions

X At coolant temperatures under 248 ‡(120 †), drive to the next

qualified specialist workshop.

X Avoid subjecting the engine to heavy loads, e.g. driving in

mountainous terrain, and stop-start driving.

# The battery is not being charged.

Possible causes are: Ra faulty alternator Ra torn poly-V-belt Ra malfunction in the electronics X Pull over and stop the vehicle safely and switch off the engine,

paying attention to road and traffic conditions.

X Open the hood. X Check whether the poly-V-belt is torn. If the poly-V-belt is torn: ! Do not continue driving. The engine could otherwise overheat. X Consult a qualified specialist workshop. If the poly-V-belt is OK: X Visit a qualified specialist workshop. The battery is faulty. X Pull over and stop the vehicle safely as soon as possible, paying attention to road and traffic conditions. Do not continue driving under any circumstances. X Engage the parking brake. X Consult a qualified specialist workshop. The oil level is too low. X Check the oil level (Y page 295). X If necessary, add the engine oil (Y page 296). X Have the engine checked for leaks if engine oil has to be added

more often than usual.

Battery/ Alternator Stop Vehicle

Check engine oil level at next refueling

Information on approved engine oils can be obtained from any qualified specialist workshop or on the Internet at http://www.mbusa.com (USA only). ! The oil level is too low. Avoid long journeys with too little engine oil. There is a risk of

engine damage. The display messages and the corresponding symbol that indicate that the oil level is too low must not be ignored.

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Display messages Possible causes/consequences and M Solutions C There is only a small amount of fuel in the fuel tank.

X Refuel at the nearest gas station. The fuel level has fallen below the reserve range. The fuel tank must be filled up to at least the reserve fuel level; otherwise, engine running may be impaired. X Refuel at the nearest gas station. The fuel system pressure is too low. The fuel filler cap is not closed correctly or the fuel system is leaking. X Check that the fuel filler cap is correctly closed. X If the fuel filler cap is not correctly closed: close the fuel filler

X If the fuel filler cap is closed: visit a qualified specialist

cap.

workshop.

Reserve Fuel

Gas Cap Open

Ultra Low-sulfur Diesel Fuel Only

¸ Replace air filter

· Clean Fuel Filter

Ø Check Additive See Operator's Manual

Ø Remaining Starts: 20

Vehicles with a diesel engine: the fuel level has fallen below the reserve range. X Check that the fuel filler cap is correctly closed. X Refuel at the nearest gas station. X Only use commercially available vehicular ULTRA-LOW SULFUR

DIESEL FUEL (ULSD, 15 ppm SULFUR MAXIMUM).

Vehicles with a diesel engine: the engine air filter is contaminated and must be replaced. X Visit a qualified specialist workshop. Vehicles with a diesel engine: there is water in the fuel filter. The water must be drained off. X Visit a qualified specialist workshop.

The AdBlue® tank is empty. X Have the AdBlue® tank filled as soon as possible at a qualified

specialist workshop (Y page 163). Visit a qualified specialist workshop.

The AdBlue® level has fallen to a minimum. X Have the AdBlue® tank filled as soon as possible at a qualified

specialist workshop (Y page 163). Visit a qualified specialist workshop.

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Driving systems Display messages ° Level Selection Not Permitted

° Compressor Cooling Down

Possible causes/consequences and M Solutions You cannot change the vehicle level, because: Ryou are exceeding the permissible speed for the selected

vehicle level.

Ryou are towing a trailer. Rthe trailer-coupling socket is being used, e.g. for a bicycle rack. X Drive more slowly and then select the desired vehicle level again

(Y page 194).

X Observe the notes on towing a trailer (Y page 209). You have selected a higher vehicle level. The compressor first needs to cool down because of frequent level changes. X Drive in a manner appropriate for the current vehicle level. X Make sure that there is sufficient ground clearance. X Allow the compressor to cool down.

When the compressor has cooled down, the display message disappears. The vehicle then continues rising to the selected level.

° Malfunction

° Rising Max.12 MPH

° Max.12 MPH

Æ Being lowered Max.12 MPH

Level control is faulty. X Do not drive faster than 50 mph(80 km/h). X Make sure that there is sufficient ground clearance. X Have the vehicle checked at a qualified specialist workshop. The vehicle is being adjusted to off-road level 3. The display message informs you of the maximum speed permissible for off- road level 3. X Do not drive faster than 12 mph(20 km/h). You are driving in off-road level 3. The display message informs you of the maximum speed permissible for off-road level 3. X Do not drive faster than 12 mph(20 km/h). The vehicle is being lowered from off-road level 3 to off-road level 2. The display message informs you of the maximum speed permissible for off-road level 3. X Do not driver faster than 12 mph(20 km/h) until off-road level

2 is reached.

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Display messages Æ Reduce speed to under 12 MPH

Locking System Inoperative Service Required Diff. Lock System Overheated - Wait briefly

Stop vehicle, engage parking brake

Å Service Required If parked engage pk. brake Å Max. Speed 25 MPH

Å Max. Speed 40 MPH

Possible causes/consequences and M Solutions G Risk of accident You are exceeding the speed permissible for the selected off-road level. X Adjust your driving style to the altered handling characteristics. X Only make slight steering movements and avoid fast steering

movements.

X Take account of the altered handling characteristics. X Do not driver faster than 12 mph(20 km/h). The differential locks are faulty. X Do not drive faster than 50 mph (80 km/h). X Have the vehicle checked at a qualified specialist workshop.

The differential locks are too hot and have been disengaged. X Drive on carefully. X Allow the differential locks to cool down.

The differential locks reengage as soon as they have cooled down.

A gearshift process has been canceled. LOW RANGE is in the neutral position. There is no connection between the engine and the drive wheels. X Pull over and stop the vehicle safely as soon as possible, paying

attention to road and traffic conditions.

X Engage the parking brake. Do not continue driving under any

circumstances.

X Repeat the gearshift process. The LOW RANGE system is malfunctioning. X Do not drive faster than 50 mph (80 km/h). X Engage the parking brake to park. X Have the vehicle checked at a qualified specialist workshop. You have exceeded the maximum speed for the gearshift process. X Drive slower.

The gearshift process is carried out.

You have exceeded the maximum speed for the gearshift process. X Drive slower.

The gearshift process is carried out.

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Display messages ŠShift briefly into ŠShifting Process Canceled Reactivate à Inoperative Blind Spot Assist Currently Unavailable See Operator's Manual

Blind Spot Assist Inoperative

Cruise Control Inoperative

Possible causes/consequences and M Solutions You have reduced the vehicle speed, but the automatic transmission is not in position N. X Briefly shift the automatic transmission to position N.

The gearshift process has been canceled. X Repeat the gearshift process.

DSR (Downhill Speed Regulation) is deactivated due to a malfunction. X Have DSR checked at a qualified specialist workshop. Blind Spot Assist is temporarily inoperative if: Rthe sensors are dirty. Rits function is impaired due to heavy rain or snow. Rthe radar sensor system is outside the operating temperature

range.

Rthe radar sensor system is temporarily inoperative, e.g. due to

electromagnetic radiation emitted by nearby TV or radio stations or other sources of electromagnetic radiation.

Rthe on-board voltage is too low. The yellow 9 indicator lamps also light up in the exterior mirrors. Blind Spot Assist is operational again and the display message disappears when: Rthe dirt (e.g. slush) drops away while the vehicle is in motion. Rthe system detects that the sensors are fully available again. Rthe radar sensor system is back within the operating

temperature range.

If the display message continues to be displayed: X Clean the sensors (Y page 303). X Restart the engine. Blind Spot Assist is faulty. The yellow 9 indicator lamps also light up in the exterior mirrors. X Visit a qualified specialist workshop. Cruise control is faulty. X Visit a qualified specialist workshop.

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Display messages Cruise Control --- mph

DISTRONIC --- MPH

DISTRONIC Override DISTRONIC Inoperative DISTRONIC Currently Unavailable See Operator's Manual

Possible causes/consequences and M Solutions A condition for activating cruise control has not been met. You wanted to save a speed of less than 20 mph (30 km/h). X If the situation allows, drive faster than 20 mph (30 km/h) and

save the speed.

X Check the activation conditions for cruise control

(Y page 179).

An activation condition for DISTRONIC is not fulfilled. X If the situation allows, drive faster than 20 mph (30 km/h) and

save the speed.

X Check activation conditions for DISTRONIC (Y page 181). DISTRONIC is no longer controlling the speed of the vehicle. X Take your foot off the accelerator pedal. DISTRONIC is faulty or the display has failed. X Visit a qualified specialist workshop. DISTRONIC is deactivated and is temporarily inoperative if: Rthe DISTRONIC cover in the radiator grill is dirty. Rits function is impaired due to heavy rain, snow or fog. Rthe radar sensor system is temporarily inoperative, e.g. due to

electromagnetic radiation emitted by nearby TV or radio stations or other sources of electromagnetic radiation.

Rthe radar sensor system has not detected any vehicles or

stationary objects, e.g. traffic signs, for a long time.

Rthe system is outside the operating temperature range. DISTRONIC becomes available again and the display message disappears when: Rthe dirt (e.g. slush) drops away while the vehicle is in motion. Rthe system detects that the sensors are fully available again. Rthe system is within the operating temperature range. If the display message continues to be displayed: X Clean the DISTRONIC cover in the radiator grill (Y page 303). X Restart the engine.

G Warning DISTRONIC cannot take weather conditions into account. Switch off DISTRONIC or do not turn it on if the sensor is dirty or visibility is diminished as a result of snow, rain or fog. The distance control may be impaired even before the system is able to detect a dirty sensor. The DISTRONIC

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Currently Unavailable See Operator’s Manual message will be displayed in the multifunction display and DISTRONIC will be turned off.

Tires 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.

Display messages Tire Pressure Check Tires

Possible causes/consequences and M Solutions G Risk of accident The tire pressure loss warning system has detected a significant loss in pressure. X Stop the vehicle without making any sudden steering or braking maneuvers. Pay attention to the traffic conditions as you do so.

X Check the tires and, if necessary, change the wheel

X Check the tire pressures and, if necessary, set to the correct

(Y page 350).

tire pressure.

Check tires, then restart Run Flat Indicator

Run Flat Indicator Inoperative Tire pressure displayed after driving for a few minutes

X Restart the tire pressure loss warning system when the tire

pressure is correct (Y page 339).

A display message for the tire pressure loss warning system was shown. X Set the correct tire pressure in all four tires. X Restart the tire pressure loss warning system (Y page 339). The tire pressure loss warning system is faulty. X Visit a qualified specialist workshop. The tire pressure monitor is measuring the tire pressure. X Drive on.

The tire pressures appear in the multifunction display after you have been driving for a few minutes.

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Display messages Tire Pressure Monitor Inoperative Tire Pressure Monitor Inoperative No Wheel Sensors

Check Tire(s)

Caution: Tire Defect

Tire pressure(s) Please Correct

Tire Pressure Monitor Wheel Sensor Missing

Possible causes/consequences and M Solutions The TPMS is faulty. X Visit a qualified specialist workshop.

The wheels mounted do not have a suitable tire pressure sensor. The tire pressure monitor is deactivated. X Mount wheels with suitable tire pressure sensors.

The TPMS is activated automatically after driving for a few minutes. G Risk of accident The tire pressure in one or more tires has dropped significantly. The wheel position is displayed in the multifunction display. X Stop the vehicle without making any sudden steering or braking maneuvers. Pay attention to the traffic conditions as you do so.

X Correct the tire pressure (Y page 341). X If necessary, change the wheel (Y page 350). G Risk of accident The tire pressure in one or more tires has dropped suddenly. The wheel position is displayed in the multifunction display. X Stop the vehicle without making any sudden steering or braking maneuvers. Pay attention to the traffic conditions as you do so.

X If necessary, change the wheel (Y page 350). The tire pressure is insufficient in at least one of the tires or the tire pressure difference between the wheels is too great. The wheel position is displayed in the multifunction display. X Check the tire pressures at the next opportunity. If necessary,

correct the tire pressure (Y page 341).

X Restart the tire pressure monitor (Y page 343). There is no signal from the tire pressure sensor of one or several wheels. The pressure of the affected tire is not displayed in the multifunction display. X Have the faulty tire pressure sensor replaced at a qualified

specialist workshop.

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Display messages Tire Pressure Monitor Currently Unavailable

Tire Pressure Caution: Tire Defect

Tire Pressure Check Tires

Possible causes/consequences and M Solutions Due to a source of radio interference no signals can be received from the wheel sensors. The tire pressure monitor is temporarily malfunctioning. X Drive on.

The TPMS restarts automatically as soon as the problem has been solved. G Risk of accident The tire pressure in one or more tires has dropped suddenly. X Stop the vehicle without making any sudden steering or braking maneuvers. Pay attention to the traffic conditions as you do so.

X If necessary, change the wheel (Y page 350). G Risk of accident The tire pressure in one or more tires has dropped significantly. X Stop the vehicle without making any sudden steering or braking maneuvers. Pay attention to the traffic conditions as you do so.

X If necessary, change the wheel (Y page 350). X Check the tire pressure. If necessary, correct the tire pressure

(Y page 341).

Please correct the tire pressures

The tire pressure is insufficient in at least one of the tires or the tire pressure difference between the wheels is too great. X Check the tire pressures at the next opportunity. If necessary,

correct the tire pressure (Y page 341).

Vehicle Display messages Shift to P or N to start engine

Auxiliary Battery Malfunction

Depress brake to shift out of P

Possible causes/consequences and M Solutions You have attempted to start the engine with the transmission in position R or D. X Shift the transmission to position P or N. The auxiliary battery for the automatic transmission is no longer being charged. X Visit a qualified specialist workshop. You have attempted to move the transmission selector lever to position D, R or N without depressing the brake pedal. X Depress the brake pedal.

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Display messages Door Open Vehicle Not In Park The driver's door is open and the transmission is in position R, N

Possible causes/consequences and M Solutions

Drive to workshop without shifting gears

Only shift to P when vehicle is at a standstill

or D. X Shift the transmission to position P. X Engage the parking brake. You cannot change the transmission position due to a malfunction. If transmission position D is selected: X Drive to a qualified specialist workshop without shifting the

transmission from position D.

If transmission position R, N or P is selected: X Notify a qualified specialist workshop or breakdown service. The vehicle is moving. X Pull over and stop the vehicle safely as soon as possible, paying

attention to road and traffic conditions.

X Shift the transmission to position P. G Risk of accident The hood or the tailgate is open. X Pull over and stop the vehicle safely as soon as possible, paying

attention to road and traffic conditions.

X Engage the parking brake. X Close the hood or tailgate. You have attempted to lock the vehicle with KEYLESS-GO while the tailgate or door is open. X Close all doors and/or the tailgate.

X Close all doors. G Risk of accident The power steering assistance is faulty. You will need to use more force to steer. X Check whether you are able to apply the extra force required. X If you are able to steer safely: carefully drive on to a qualified

specialist workshop.

X If you are unable to steer safely: do not drive on. Contact the

nearest qualified specialist workshop.

; At least one door is open.

Power Steering Malfunction See Operator's Manual

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Display messages No Service

Bluetooth Ready

Possible causes/consequences and M Solutions Your vehicle is outside the network provider transmitter/receiver range. X Wait until the mobile phone operational readiness symbol

appears in the multifunction display.

The Bluetooth® connection between your mobile phone and COMAND is not activated. X If desired, activate the Bluetooth® connection between the

mobile phone and COMAND (see the separate operating instructions).

¥ Top Up Washer Fluid

The washer fluid level has dropped to approximately ⅓ of the total reservoir capacity. X Add washer fluid (Y page 297).

SmartKey Display messages Please replace key Remove key Don't Forget Your Key

Key Does Not Belong To Vehicle Change Key Batteries

Possible causes/consequences and M Solutions The SmartKey needs to be replaced. X Visit a qualified specialist workshop.

The SmartKey is in the ignition lock. X Remove the SmartKey.

The display message is shown for a maximum of 60 seconds and is only a reminder. You are opening the driver's door with the engine switched off. The SmartKey is not in the ignition lock. X Take the SmartKey with you when you leave the vehicle. You have put the wrong key in the ignition lock. X Use the correct key.

The batteries of the KEYLESS-GO key are discharged. X Change the batteries (Y page 75).

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Display messages Key Not Detected (red display message)

Key Not Detected (white display message)

Key Detected In Vehicle Pull starting button out then insert key

Possible causes/consequences and M Solutions The KEYLESS-GO key is not in the vehicle. If the engine is switched off, you can no longer lock the vehicle centrally or start the engine. X Pull over and stop the vehicle safely as soon as possible, paying

attention to road and traffic conditions.

X Engage the parking brake. X Locate the KEYLESS-GO key. The KEYLESS-GO key is not detected while the engine is running because there is interference from a strong source of radio waves. X Pull over and stop the vehicle safely as soon as possible, paying

attention to road and traffic conditions.

X Engage the parking brake. X Operate the vehicle with the SmartKey in the ignition lock if

necessary.

The KEYLESS-GO key cannot be detected at present. X Change the location of the SmartKey with the KEYLESS-GO

functions in the vehicle.

If the KEYLESS-GO key is still not detected: X Change the location of the SmartKey with the KEYLESS-GO

functions in the vehicle.

X Operate the vehicle with the key in the ignition lock if necessary. The KEYLESS-GO key has been detected inside the vehicle during locking. X Remove the KEYLESS-GO key from the vehicle.

The KEYLESS-GO key can continuously not be detected. X Insert the SmartKey into the ignition lock and turn it to the

desired position.

X Visit a qualified specialist workshop.

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Warning and indicator lamps in the instrument cluster Brakes Problem $ (USA only) J (Canada only) The red brake system warning lamp comes on while the vehicle is moving. A warning tone also sounds.

Possible causes/consequences and M Solutions You are driving with the parking brake engaged. X Release the parking brake.

The warning lamp goes out and the warning tone ceases.

$ (USA only) J (Canada only) The red brake system warning lamp comes on while the engine is running. A warning tone also sounds.

G Risk of accident There is insufficient brake fluid in the fluid reservoir. X Pull over and stop the vehicle safely as soon as possible, paying attention to road and traffic conditions. Do not continue driving under any circumstances. X Engage the parking brake. X Consult a qualified specialist workshop immediately. X Observe the additional display messages in the multifunction

display.

Do not add brake fluid. This will not rectify the malfunction.

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.

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Seat belts Problem

After starting the engine, the red seat belt warning lamp lights up for 6 seconds.

After starting the engine, the red seat belt warning lamp lights up. In addition, a warning tone sounds for up to 6 seconds.

The red seat belt warning lamp lights up after the engine starts, as soon as the driver's or the front-passenger door is closed.

The red seat belt warning lamp flashes and an intermittent audible warning sounds.

Possible causes/consequences and M Solutions The seat belt warning lamp reminds the driver and front passenger to fasten their seat belts. X Fasten your seat belt (Y page 53).

G Risk of injury The driver's seat belt is not fastened. X Fasten your seat belt (Y page 53).

The warning tone ceases.

G Risk of injury The driver or front passenger has not fastened their seat belt. X Fasten your seat belt (Y page 53).

The warning lamp goes out. G Risk of injury There are objects on the front-passenger seat. X Remove the objects from the front-passenger seat and stow

them in a secure place. The warning lamp goes out. G Risk of injury The driver or front passenger has not fastened their seat belt. In addition, you are driving faster than 15 mph (25 km/h) or you have briefly driven faster than 15 mph (25 km/h). X Fasten your seat belt (Y page 53).

The warning lamp goes out and the intermittent audible warning ceases. G Risk of injury There are objects on the front-passenger seat. In addition, you are driving faster than 15 mph (25 km/h) or you have briefly driven faster than 15 mph (25 km/h). X Remove the objects from the front-passenger seat and stow

them in a secure place. The warning lamp goes out and the intermittent audible warning ceases.

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Safety systems Problem

The yellow ABS warning lamp is lit while the engine is running.

The yellow ABS warning lamp is lit while the engine is running.

The yellow ABS warning lamp is lit while the engine is running.

Possible causes/consequences and M Solutions G Risk of accident ABS (Anti-lock Brake System) is deactivated due to a malfunction. Therefore, BAS (Brake Assist), ESP® (Electronic Stability Program), EBD (Electronic Brake-force Distribution) and PRE-SAFE® are also deactivated. The brake system continues to function normally, but without the functions listed above. The wheels could therefore lock if you brake hard, for example. X Observe the additional display messages in the multifunction

display.

X Drive on carefully. X Visit a qualified specialist workshop. If the ABS control unit is faulty, there is also a possibility that other systems, such as the navigation system or the automatic transmission, will not be available. G Risk of accident The on-board voltage is too low. ABS has been deactivated due to undervoltage. Therefore, ESP®, BAS and PRE-SAFE® are also deactivated. The brake system continues to function normally, but without the functions listed above. The wheels could therefore lock if you brake hard, for example. X Switch off consumers that are not required, e.g. the rear window

defroster or interior lighting. ABS will be available again as soon as the vehicle's on-board electrical system voltage increases.

If the warning lamp is still on: X Have the battery and alternator checked at a qualified specialist

workshop.

Self diagnosis is not yet complete. X Carefully drive a suitable distance making slight steering

movements at a speed above 12 mph (20 km/h).

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Problem $ (USA only) J (Canada only) !d The red brake warning lamp, the yellow ESP® and ESP® OFF warning lamps and the yellow ABS warning lamp are lit while the engine is running. A warning tone also sounds.

The yellow ESP® warning lamp flashes while the vehicle is in motion.

The yellow ESP® warning lamp flashes while the vehicle is in motion.

Possible causes/consequences and M Solutions G Risk of accident EBD is faulty. Therefore, ABS, BAS, PRE-SAFE®, hill start assist and ESP® trailer stabilization are also not available due to a malfunction. The brake system continues to function normally, but without the functions listed above. The wheels could therefore lock if you brake hard, for example. X Observe the additional display messages in the multifunction

display.

X Drive on carefully. X Visit a qualified specialist workshop. G Risk of accident ESP® or traction control has intervened because there is a risk of skidding or at least one wheel has started to spin. Cruise control or DISTRONIC is deactivated. X Only depress the accelerator pedal as far down as necessary

when pulling away.

X Release the accelerator pedal while the vehicle is in motion. X Adapt your driving style to suit the road and weather conditions. X Do not deactivate ESP®. Exceptions: (Y page 66).

At least one wheel is spinning and ETS (Electronic Traction System) is deactivated to prevent the brakes on the drive wheels from overheating. X Observe the additional display messages in the multifunction

display.

ETS switches back on again as soon as the brakes have cooled down. The display message disappears and the d warning lamp goes out.

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Problem

The yellow ESP® warning lamp is lit while the engine is running.

Possible causes/consequences and M Solutions G Risk of accident ESP® and ESP® trailer stabilization are deactivated. ESP® will not stabilize the vehicle if it starts to skid or if a wheel starts to spin. X Reactivate ESP®.

The yellow ESP® warning lamp is lit while the engine is running.

The red SRS warning lamp is lit while the engine is running.

Exceptions: (Y page 66).

X Adapt your driving style to suit the road and weather conditions. If ESP® cannot be activated: X Have ESP® checked at a qualified specialist workshop. G Risk of accident ESP® is not available due to a malfunction. ESP® will not stabilize the vehicle if it starts to skid or if a wheel starts to spin. The brake system continues to function normally, but without the functions listed above. X Observe the additional display messages in the multifunction

display.

X Drive on carefully. X Visit a qualified specialist workshop. G Risk of injury The restraint systems are malfunctioning. The air bags or Emergency Tensioning Devices may either be triggered unintentionally or, in the event of an accident, not be triggered at all. X Drive on carefully. X Visit a qualified specialist workshop immediately.

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.

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Engine Problem ! (USA only) ; (Canada only) The yellow engine diagnostics warning lamp lights up while the engine is running.

! (USA only) ; (Canada only) The yellow engine diagnostics warning lamp lights up while the engine is running.

Possible causes/consequences and M Solutions There may be a malfunction, for example: Rin the engine management Rin the fuel injection system Rin the exhaust system Rin the ignition system (for vehicles with gasoline engines) The emission limit values may have been exceeded and the engine may be breaking in emergency mode. X Have the vehicle checked as soon as possible at a qualified

specialist workshop.

i In some states, you are required to visit a qualified specialist

workshop as soon as the yellow engine diagnostics warning lamp lights up due to the relevant applicable legislation. If necessary, check whether this is the case in the state you are in.

The fuel system pressure is too low. The fuel filler cap is not closed correctly or the fuel system is leaking. X Check that the fuel filler cap is correctly closed. X If the fuel filler cap is not correctly closed: close the fuel filler

X If the fuel filler cap is closed: visit a qualified specialist

cap.

workshop.

Vehicles with a diesel engine: the fuel tank has been run completely dry and the engine will not start. There is air in the fuel system (Y page 162). The fuel level has fallen below the reserve range. The fuel tank must be filled at least to the reserve fuel level to prevent impairment to the running of the engine. X Refuel at the nearest gas station.

The yellow reserve fuel warning lamp lights up while the engine is running.

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Driving systems Problem

· The red DTR distance warning lamp lights up while the vehicle is in motion. A warning tone also sounds.

Tires Problem

USA only: The yellow combination low tire pressure telltale/TPMS malfunction telltale for the TPMS is on.

USA only: The yellow combination low tire pressure telltale/TPMS malfunction telltale for the TPMS flashes for 60
seconds and then remains illuminated.

Possible causes/consequences and M Solutions G Risk of accident A warning is issued if: Ryou are approaching a vehicle in front at too great a speed RDISTRONIC has detected a stationary obstacle in your line of

travel

X Be prepared to brake immediately. X Pay careful attention to the traffic situation. You may have to

brake or take evasive action.

Possible causes/consequences and M Solutions G Risk of accident The TPMS has detected a loss of pressure in at least one of the tires. X Stop the vehicle without making any sudden steering or braking maneuvers. Pay attention to the traffic conditions as you do so. X Observe the additional display messages in the multifunction

display.

X Check the tire pressure. If necessary, correct the tire pressure

(Y page 341).

X If necessary, change a wheel (Y page 350). The TPMS is faulty. X Observe the additional display messages in the multifunction

display.

X Visit a qualified specialist workshop.

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

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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 warning lamp when one or more of your tires are significantly underinflated. Accordingly, when the low tire pressure warning lamp 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. Underinflation also reduces fuel efficiency and tire tread life, and may affect the vehicle's handling