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AIRMATIC is defective. A warning tone also sounds.
X Do not drive faster than 50 mph (80km/h).
X Make only slight steering movements. Otherwise, the front
fender or the tires could be damaged if the steering movement is too large.
X Listen for scraping sounds.
X Pull over and stop the vehicle safely, paying attention to road
and traffic conditions, and select a higher vehicle level. Depending on the malfunction, it may be possible to raise the vehicle.
X Visit a qualified specialist workshop.
The AIRMATIC function is restricted. The vehicle's handling characteristics may be affected.
X Do not drive faster than 50 mph (80km/h).
X Visit a qualified specialist workshop.
¨ Malfunction
ABC
The ABC (Active Body Control) vehicle level is too low.
Malfunction Stop Vehicle
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. After a few seconds, the vehicle level is adjusted and the display message disappears.
The vehicle is leaking oil.
The display message is shown continuously.
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 Notify a qualified specialist workshop or breakdown service.
The display message is shown continuously.
ABC is malfunctioning.
X Do not drive faster than 50 mph (80km/h).
X Make only slight steering movements. Otherwise, the front
fender or the tires could be damaged if the steering movement is too large.
X Listen for scraping sounds.
X Visit a qualified specialist workshop.
ABC
The ABC vehicle level is too low when the vehicle is stationary.
Vehicle Rising Please Wait Briefly
X Do not pull away.
The vehicle level is set when the display message disappears.
Display messages
415
Display messages
Possible causes/consequences and M Solutions
ABC
Malfunction
The ABC function is restricted. The vehicle's handling characteristics may be affected.
X Do not drive faster than 50 mph (80km/h).
X Visit a qualified specialist workshop.
ë Off
The HOLD function is deactivated. the vehicle is skidding.
A warning tone also sounds.
X Reactivate the HOLD function later (Y page 346).
The HOLD function is deactivated. When the brake pedal is firmly depressed, an activation condition is not fulfilled.
A warning tone also sounds.
X Check the activation conditions for the HOLD function
(Y page 346).
The radar sensor system is deactivated.
X Switch on the radar sensor system (Y page 389).
Lane Keeping Assist or Active Lane Keeping Assist is deactivated and temporarily inoperative. Possible causes are:
Rthe windshield in the camera's field of vision is dirty.
Rvisibility is impaired due to heavy rain, snow or fog.
Rthere are no lane markings for a longer period.
Rthe lane markings are worn, dark or covered, e.g. by dirt or snow.
If the display message does not disappear:
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Apply the electric parking brake.
X Clean the windshield.
If the system detects that the camera is fully operational, the display message disappears.
Lane Keeping Assist or Active Lane Keeping Assist is operational again.
Lane Keeping Assist or Active Lane Keeping Assist is defective.
X Visit a qualified specialist workshop.
Radar Sensors Deactivated See Oper. Manual
Lane Keeping Assist Currently Unavailable See Operator's Manual or Active Lane Keeping Assist Currently Unavailable See Operator's Manual
Lane Keeping Assist Inoperative or Active Lane Keeping Assist Inoperative
416 Display messages
Display messages
Possible causes/consequences and M Solutions
Blind Spot Assist Currently Unavailable See Operator's Manual or Active Blind Spot Assist Currently Unavailable See Operator's Manual
Blind Spot Assist Inoperative or Active Blind Spot Assist Inoperative
Parking Guidance Inoperative
Blind Spot Assist or Active Blind Spot Assist is temporarily inoperative. Possible causes are:
Rthe sensors are dirty.
Rfunction 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.
The yellow 9 indicator lamps also light up in the exterior mirrors.
If the display message does not disappear:
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Apply the electric parking brake.
X Clean the sensors (Y page 474).
X Restart the engine.
If the system detects that the sensors are fully operational, the display message disappears.
Blind Spot Assist or Active Blind Spot Assist is operational again.
Blind Spot Assist or Active Blind Spot Assist is defective. The yellow 9 indicator lamps also light up in the exterior mirrors.
X Visit aqualified specialist workshop.
Parking Guidance is malfunctioning (Y page 353).
X Restart the engine.
If the display message continues to be displayed:
X Visit a qualified specialist workshop.
Display messages
417
Display messages
Possible causes/consequences and M Solutions
Parking Guidance Canceled
Parking Guidance is deactivated. Possible causes are:
Rthe vehicle is skidding.
Rthe sensors are dirty.
Ra malfunction has occurred.
X Reactivate Parking Guidance later (Y page 353).
If the parking space symbol does not appear in the multifunction display at speeds below 19 mph (30 km/h):
X Clean the sensors (Y page 474).
X Restart the engine.
If the parking space symbol still does not appear in the multifunction display at speeds below 19 mph (30 km/h):
X Visit a qualified specialist workshop.
Parking Guidance has been deactivated because you are no longer following the recommended path.
X Park again and, while doing so, observe the display messages
in the multifunction display.
Parking Guidance Canceled
The vehicle is parked. A warning tone also sounds.
The display message disappears automatically.
DISTRONIC PLUS Off
DISTRONIC PLUS Now Available
DISTRONIC PLUS has been deactivated (Y page 336). If it was deactivated automatically, a warning tone also sounds.
DISTRONIC PLUS is operational again after having been temporarily unavailable. You can now reactivate DISTRONIC PLUS (Y page 336).
418 Display messages
Display messages
Possible causes/consequences and M Solutions
DISTRONIC PLUS Currently Unavailable See Operator's Manual
DISTRONIC is deactivated and temporarily inoperative. Possible causes are:
Rthe DISTRONIC PLUS cover in the radiator trim is dirty
Rfunction is impaired due to heavy rain or snow.
Rthe sensors in the bumpers are dirty.
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 system is outside the operating temperature range.
RThe on-board voltage is too low.
A warning tone also sounds.
If the display message does not disappear:
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 327).
X Clean the DISTRONIC PLUS cover in the radiator trim
(Y page 474).
X Clean the bumpers (Y page 474).
X Restart the engine.
If the system detects that the sensors are fully operational, the display message disappears.
DISTRONIC is operational again.
DISTRONIC PLUS Inoperative
DISTRONIC PLUS is defective. BAS PLUS (Brake Assist PLUS) and PRE-SAFE® Brake may be inoperative as well.
A warning tone also sounds.
X Visit aqualified specialist workshop.
DISTRONIC PLUS Override
You have depressed the accelerator pedal. DISTRONIC PLUS is no longer controlling the speed of the vehicle.
X Remove your foot from the accelerator pedal.
DISTRONIC PLUS --- mph
An activation condition for DISTRONIC PLUS is not fulfilled.
X Check the activation conditions for DISTRONIC PLUS
(Y page 336).
Display messages
419
Display messages
Possible causes/consequences and M Solutions
Cruise Control Inoperative
Cruise control is defective.
A warning tone also sounds.
X Visit aqualified specialist workshop.
Cruise Control --- mph
A condition for activating cruise control has not been fulfilled.
You have tried to store a speed below 20 mph (30 km/h), for example.
X If conditions permit, drive faster than 20 mph (30 km/h) and
store the speed.
X Check the activation conditions for cruise control
(Y page 334).
Tires
Display messages
Possible causes/consequences and M Solutions
tire pressures displayed after driving a few minutes
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.
tire press. monitor inoperative
The tire pressure monitor is faulty.
X Visit a qualified specialist workshop.
tire press. monitor inoperative No wheel sensors
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 tire pressure monitor is activated automatically after driving for a few minutes.
420 Display messages
Display messages
Possible causes/consequences and M Solutions
Check tire(s)
The tire pressure in one or more tires has dropped significantly. The wheel position is displayed in the multifunction display.
A warning tone also sounds.
G WARNING
With tire pressures which are too low, there is a risk of the following hazards:
Rthey may burst, especially as the load and vehicle speed
increase.
Rthey may wear excessively and/or unevenly, which may greatly
impair tire traction.
Rthe driving characteristics, as well as steering and braking, may
be greatly impaired.
There is a risk of an accident.
X Stop the vehicle without making any sudden steering or braking maneuvers. Pay attention to the traffic conditions as you do so.
X Secure the vehicle against rolling away (Y page 327).
X If there is a flat tire, inspect the tires (Y page 479).
X Check the tire pressure (Y page 505).
X If necessary, correct the tire pressure.
Caution, tire defect
The tire pressure in one or more tires has dropped suddenly. The wheel position is shown in the multifunction display.
G WARNING
If you drive with a flat tire, there is a risk of the following hazards:
RA flat tire affects the ability to steer or brake the vehicle.
RYou could lose control of the vehicle.
RContinued driving with a flat tire will cause excessive heat build-
up and possibly a fire.
There is a risk of an accident.
X Stop the vehicle without making any sudden steering or braking maneuvers. Pay attention to the traffic conditions as you do so.
X Secure the vehicle against rolling away (Y page 327).
X If there is a flat tire, inspect the tires (Y page 479).
Please correct tire pressure(s)
The tire pressure is too low 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 505).
X Restart the tire pressure monitor (Y page 507).
Display messages
421
Display messages
Possible causes/consequences and M Solutions
Wheel sensor(s) missing
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.
tire press. monitor currently unavailable
Due to a source of radio interference, no signals can be received from the wheel sensors. The tire pressure monitor is temporarily malfunctioning.
tire pressure Caution, tire defect
X Drive on.
The tire pressure monitor restarts automatically as soon as the problem has been solved.
The tire pressure in one or more tires has dropped suddenly.
A warning tone also sounds.
G WARNING
If you drive with a flat tire, there is a risk of the following hazards:
RA flat tire affects the ability to steer or brake the vehicle.
RYou could lose control of the vehicle.
RContinued driving with a flat tire will cause excessive heat build-
up and possibly a fire.
There is a risk of an accident.
X Stop the vehicle without making any sudden steering or braking maneuvers. Pay attention to the traffic conditions as you do so.
X Secure the vehicle against rolling away (Y page 327).
X If there is a flat tire, inspect the tires (Y page 479).
422 Display messages
Display messages
Possible causes/consequences and M Solutions
tire pressure Check tire(s)
The tire pressure in one or more tires has dropped significantly.
G WARNING
With tire pressures which are too low, there is a risk of the following hazards:
Rthey may burst, especially as the load and vehicle speed
increase.
Rthey may wear excessively and/or unevenly, which may greatly
impair tire traction.
Rthe driving characteristics, as well as steering and braking, may
be greatly impaired.
There is a risk of an accident.
X Stop the vehicle without making any sudden steering or braking maneuvers. Pay attention to the traffic conditions as you do so.
X Secure the vehicle against rolling away (Y page 327).
X If there is a flat tire, inspect the tires (Y page 479).
X Check the tire pressure (Y page 505).
X If necessary, correct the tire pressure.
Please correct tire pressure(s)
The tire pressure is too low 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 505).
Vehicle
Display messages
Possible causes/consequences and M Solutions
Shift to P or N to Start Engine
You have attempted to start the engine with the transmission in position R or D.
X Shift the transmission to position P or N.
Auxiliary Battery Malfunction (White display message)
The auxiliary battery for the automatic transmission is no longer being charged.
X Visit a qualified specialist workshop.
Display messages
423
Display messages
Possible causes/consequences and M Solutions
Auxiliary Battery Malfunction (Red display message)
The auxiliary battery for the automatic transmission is discharged. If there is a malfunction in the vehicle's electrical system, you may not be able to change the transmission position.
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 Consult a qualified specialist workshop.
Apply Brake to Shift from 'P'
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.
Door Open Vehicle Not in Park
The driver's door is open and the transmission is in position R, N or D.
X Shift the transmission to position P.
X Secure the vehicle against rolling away (Y page 327).
Service Required Do Not Shift Gears
You cannot change the transmission position due to a malfunction.
A warning tone also sounds.
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.
Only Shift to Position 'P' When Vehicle Is Stationary
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.
N The trunk lid is open. X Close the trunk lid.
M The hood is open. G WARNING
The open hood may block your view when the vehicle is in motion.
There is a risk of an accident.
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Apply the electric parking brake.
X Close the hood.
424 Display messages
Display messages
Possible causes/consequences and M Solutions
C At least one door is open.
X Close all the doors.
Power Steering Malfunction See Operator's Manual
The power steering is malfunctioning.
G WARNING
You will need to use more force to steer.
There is a risk of an accident.
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.
¥ Check Washer Fluid
The washer fluid level in the washer fluid reservoir has dropped below the minimum.
X Add washer fluid (Y page 468).
SmartKey
Display messages
Possible causes/consequences and M Solutions
 Key Does Not Belong to Vehicle  Take Your Key From Ignition  Obtain a New Key  Replace Key Battery
You have put the wrong SmartKey in the ignition lock.
X Use the correct SmartKey.
The SmartKey is in the ignition lock.
X Remove the SmartKey.
The SmartKey needs to be replaced.
X Visit a qualified specialist workshop.
The batteries of the KEYLESS-GO key are discharged.
X Change the batteries (Y page 85).
Display messages
Possible causes/consequences and M Solutions
Display messages
425
 Don't Forget Your Key
 Key Not Detected (red display message)
 Key Not Detected (white display message)
 Key Detected In Vehicle  Remove 'Start' Button and Insert Key  Close Doors to Lock Vehicle
This display message is displayed for amaximum of 60 seconds and is simply a reminder.
You have opened the driver's door with the engine switched off. The KEYLESS-GO key is not in the ignition lock.
X Remember to take the KEYLESS-GO key with you when you
leave the vehicle.
The KEYLESS-GO key is not in the vehicle.
A warning tone also sounds.
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 Secure the vehicle against rolling away (Y page 327).
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.
A warning tone also sounds.
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 327).
X Operate the vehicle with the SmartKey in the ignition lock.
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 Operate the vehicle with the SmartKey in the ignition lock.
The KEYLESS-GO key has been detected inside the vehicle during locking.
X Remove the KEYLESS-GO key from the vehicle.
KEYLESS-GO is temporarily malfunctioning or is defective.
X Insert the SmartKey into the ignition lock and turn it to the
desired position.
X Visit a qualified specialist workshop.
At least one door is open. A warning tone also sounds.
X Close all doors and lock the vehicle again.
426 Warning and indicator lamps in the instrument cluster
Warning and indicator lamps in the instrument cluster
Seat belts
Problem
After starting the engine, the red seat belt warning lamp lights up for six seconds.
After starting the engine, the red seat belt warning lamp lights up. In addition, a warning tone sounds for up to six 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.
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 61).
The driver's seat belt is not fastened.
X Fasten your seat belt (Y page 61).
The warning tone ceases.
The driver or front passenger has not fastened their seat belt.
X Fasten your seat belt (Y page 61).
The warning lamp goes out.
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.
The red seat belt warning lamp flashes and an intermittent audible warning sounds.
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 61).
The warning lamp goes out and the intermittent warning tone ceases.
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 warning tone ceases.
Warning and indicator lamps in the instrument cluster
427
Safety systems
Problem
Possible causes/consequences and M Solutions
$ (USA only) J (Canada only)
The red brake system warning lamp comes on while the engine is running. A warning tone also sounds.
There is not enough brake fluid in the brake fluid reservoir.
G WARNING
The braking effect may be impaired.
There is a risk of an accident.
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 Apply the electric 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 does not correct the malfunction.
428 Warning and indicator lamps in the instrument cluster
Problem
The yellow ABS warning lamp is lit while the engine is running.
Possible causes/consequences and M Solutions
ABS (Anti-lock Brake System) is deactivated due to a malfunction. BAS (Brake Assist), BAS PLUS, ESP® (Electronic Stability Program), PRE-SAFE®, PRE-SAFE® Brake, the HOLD function and hill start assist are therefore also deactivated, for example.
ATTENTION ASSIST21 is deactivated.
G WARNING
The brake system continues to function normally, but without the functions listed above. The wheels could therefore lock if you brake hard, for example.
The steerability and braking characteristics may be severely affected. The braking distance in an emergency braking situation can increase.
If ESP® is not operational, ESP® is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X Observe the additional display messages in the multifunction
display.
X Drive on carefully.
X Visit a qualified specialist workshop.
The yellow ABS warning lamp is lit while the engine is running.
ABS is temporarily unavailable. BAS, BAS PLUS, ESP®, EBD (electronic brake force distribution), PRE-SAFE®, PRE-SAFE® Brake, the HOLD function, hill start assist are therefore also deactivated, for example.
Self-diagnosis is not yet complete or the on-board voltage may be insufficient, for example.
ATTENTION ASSIST21 is deactivated.
G WARNING
The brake system continues to function normally, but without the functions listed above. The front and rear wheels could therefore lock if you brake hard, for example.
The steerability and braking characteristics may be severely affected. The braking distance in an emergency braking situation can increase.
If ESP® is not operational, ESP® is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
21 Not available on hybrid vehicles.
Warning and indicator lamps in the instrument cluster
429
Problem
Possible causes/consequences and M Solutions
X Carefully drive a short distance on a suitable stretch of road, making slight steering movements at a speed above 12 mph (20 km/h). The functions mentioned above are available again when the warning lamp goes out.
If the warning lamp is still on:
X Observe the additional display messages in the multifunction
display.
X Drive on carefully.
X Visit a qualified specialist workshop.
The yellow ABS warning lamp is lit while the engine is running. A warning tone also sounds.
EBD is malfunctioning. Therefore, ABS, BAS, BAS PLUS, ESP®, PRE-SAFE®, PRE-SAFE® Brake, the HOLD function and hill start assist are also unavailable, for example.
ATTENTION ASSIST21 is deactivated.
G WARNING
The brake system continues to function normally, but without the functions listed above. The front and rear wheels could therefore lock if you brake hard, for example.
The steerability and braking characteristics may be severely affected. The braking distance in an emergency braking situation can increase.
If ESP® is not operational, ESP® is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X Observe the additional display messages in the multifunction
display.
X Drive on carefully.
X Visit a qualified specialist workshop.
21 Not available on hybrid vehicles.
430 Warning and indicator lamps in the instrument cluster
Problem
Possible causes/consequences and M Solutions
$ (USA only) J (Canada only) ֌!
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.
÷
The yellow ESP® warning lamp flashes while the vehicle is in motion.
ABS and ESP® are malfunctioning. Therefore, BAS, BAS PLUS, EBD, PRE-SAFE®, PRE-SAFE® Brake, the HOLD function and hill start assist, for example, are not available either.
ATTENTION ASSIST21 is deactivated.
G WARNING
The brake system continues to function normally, but without the functions listed above. The front and rear wheels could therefore lock if you brake hard, for example.
The steerability and braking characteristics may be severely affected. The braking distance in an emergency braking situation can increase.
If ESP® is not operational, ESP® is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X Observe the additional display messages in the multifunction
display.
X Drive on carefully.
X Visit a qualified specialist workshop.
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 PLUS is deactivated.
X When pulling away, only depress the accelerator pedal as far as
necessary.
X Ease off 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®.
For exceptions, see: (Y page 75).
21 Not available on hybrid vehicles.
Warning and indicator lamps in the instrument cluster
431
Problem
å
The yellow ESP® OFF warning lamp is lit while the engine is running.
֌
The yellow ESP® and ESP® OFF warning lamps are lit while the engine is running.
Possible causes/consequences and M Solutions
ESP® is deactivated.
G WARNING
If ESP® is switched off, ESP® is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X Reactivate ESP®.
For exceptions, see: (Y page 75).
X Adapt your driving style to suit the road and weather conditions.
If ESP® cannot be activated:
X Drive on carefully.
X Have ESP® checked at a qualified specialist workshop.
ESP®, BAS, BAS PLUS, PRE-SAFE®, PRE-SAFE® Brake, the HOLD function and hill start assist are not available due to a malfunction.
ATTENTION ASSIST21 is deactivated.
G WARNING
The brake system continues to function normally, but without the functions listed above.
The braking distance in an emergency braking situation can thus increase.
If ESP® is not operational, ESP® is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X Observe the additional display messages in the multifunction
display.
X Drive on carefully.
X Visit a qualified specialist workshop.
21 Not available on hybrid vehicles.
432 Warning and indicator lamps in the instrument cluster
Problem
֌
The yellow ESP® and ESP® OFF warning lamps are lit while the engine is running.
Possible causes/consequences and M Solutions
ESP®, BAS, PRE-SAFE®, the HOLD function and hill start assist are temporarily unavailable.
BAS PLUS and PRE-SAFE® Brake may also have failed.
ATTENTION ASSIST21 is deactivated.
Self-diagnosis is not yet complete.
G WARNING
The brake system continues to function normally, but without the functions listed above.
The braking distance in an emergency braking situation can thus increase.
If ESP® is not operational, ESP® is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X Carefully drive a short distance on a suitable stretch of road, making slight steering movements at a speed above 12 mph (20 km/h). The functions mentioned above are available again when the warning lamp goes out.
If the warning lamp is still on:
X Observe the additional display messages in the multifunction
display.
X Drive on carefully.
X Visit a qualified specialist workshop.
21 Not available on hybrid vehicles.
Warning and indicator lamps in the instrument cluster
433
Problem
Possible causes/consequences and M Solutions
F (USA only) ! (Canada only)
The red indicator lamp for the electric parking brake flashes and/or the yellow warning lamp for the electric parking brake lights up.
The red SRS warning lamp is lit while the engine is running.
The electric parking brake is temporarily malfunctioning or defective.
X Observe the additional display messages in the multifunction
display.
There is a malfunction in the SRS (Supplemental Restraint System).
G WARNING
The air bags or Emergency Tensioning Devices may either be triggered unintentionally or, in the event of an accident, may not be triggered.
There is an increased risk of injury.
X Drive on carefully.
X Have SRS checked at a qualified specialist workshop
immediately.
For further information about SRS, see (Y page 48).
434 Warning and indicator lamps in the instrument cluster
Engine
Problem
The yellow Check Engine 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 a gasoline engine)
Rin the fuel system
The emission limit values may be exceeded and the engine may be running in emergency mode.
X Have the vehicle checked as soon as possible at a qualified
specialist workshop.
i In some states, you must immediately visit a qualified
specialist workshop as soon as the yellow Check Engine warning lamp lights up. This is due to the legal requirements in effect in these states. If in doubt, check whether such legal regulations apply in the state in which you are currently driving.
Vehicles with a diesel engine: the fuel tank has been run dry (Y page 324).
X Start the engine three to four times after refueling.
If the yellow Check Engine warning lamp goes out, emergency running mode is canceled. The vehicle need not be checked.
The yellow reserve fuel warning lamp flashes while the vehicle is in motion. In addition, the ; Check Engine warning lamp may light up.
The fuel system pressure is too low. The fuel filler cap is not closed correctly or the fuel system is leaking.
X Observe the additional display messages in the multifunction
display.
X Check that the fuel filler cap is correctly closed.
X If the fuel filler cap is not correctly closed: close the fuel filler
cap.
X If the fuel filler cap is closed: visit a qualified specialist
workshop.
The fuel level has dropped into the reserve range.
X Refuel at the nearest gas station.
The yellow reserve fuel warning lamp lights up while the engine is running.
Warning and indicator lamps in the instrument cluster
435
Driving systems
Problem
·
The red distance warning lamp lights up while the vehicle is in motion. A warning tone also sounds.
Possible causes/consequences and M Solutions
You are approaching a vehicle or a stationary obstacle in your line of travel at too high a speed.
X Be prepared to brake immediately.
X Pay careful attention to the traffic situation. You may have to
brake or take evasive action.
More information about DISTRONIC PLUS (Y page 336) and PRE-SAFE® Brake (Y page 77).
436 Warning and indicator lamps in the instrument cluster
Tires
Problem
USA only:
The yellow tire pressure monitor warning lamp (pressure loss/ malfunction) is lit.
Canada only:
The yellow tire pressure monitor warning lamp (pressure loss) is lit.
Possible causes/consequences and M Solutions
The tire pressure monitor has detected a loss of pressure in at least one of the tires.
G WARNING
With tire pressures which are too low, there is a risk of the following hazards:
Rthey may burst, especially as the load and vehicle speed
increase.
Rthey may wear excessively and/or unevenly, which may greatly
impair tire traction.
Rthe driving characteristics, as well as steering and braking, may
be greatly impaired.
There is a risk of an accident.
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 505).
X If necessary, change the wheel (Y page 521).
USA only:
The yellow tire pressure monitor warning lamp (pressure loss/ malfunction) flashes for approximately one minute and then remains lit.
The tire pressure monitor is faulty.
G WARNING
The system is possibly unable to recognize or register low tire pressure.
There is a risk of an accident.
X Observe the additional display messages in the multifunction
display.
X Visit a qualified specialist workshop.
Useful information ............................ 438
Loading guidelines ............................ 438
Stowage areas .................................. 438
Features ............................................. 443
437
438 Stowage areas
Useful information
i This Operator's Manual describes all models and all standard and optional equipment of your vehicle available at the time of publication of the Operator's Manual. Country-specific differences are possible. Please note that your vehicle may not be equipped with all features described. This also applies to safety- related systems and functions.
vehicle (including occupants). The values are specified on the vehicle identification plate on the B-pillar of the driver's door.
Rposition heavy loads as far forwards as
possible and as low down in the trunk as possible.
Rthe load must not protrude above the upper
edge of the seat backrests.
Ralways place the load against the rear seat
backrests.
Ralways place the load behind unoccupied
i Please read the information on qualified
seats if possible.
specialist workshops (Y page 31).
Loading guidelines
G WARNING Always fasten items being carried as securely as possible. Use cargo tie-down rings and fastening materials appropriate for the weight and size of the load.
In an accident, during hard braking or sudden maneuvers, loose items will be thrown around inside the vehicle. This can cause injury to vehicle occupants unless the items are securely fastened in the vehicle.
To help avoid personal injury during a collision or sudden maneuver, exercise care when transporting cargo. Do not pile luggage or cargo higher than the seat backrests.
The trunk is the preferred place to carry objects.
Never drive a vehicle with the trunk open. Deadly carbon monoxide (CO) gases may enter vehicle interior resulting in unconsciousness and death.
The handling characteristics of a laden vehicle are dependent on the distribution of the load within the vehicle. For this reason, you should observe the following notes when transporting a load:
Rwhen transporting a load, never exceed the maximum permissible gross vehicle weight or the gross axle weight rating of the
Rsecure the load with sufficiently strong and wear-resistant tie-downs. Pad sharp edges for protection.
Stowage areas
Stowage space
Important safety notes
G WARNING To help avoid personal injury during a collision or sudden maneuver, exercise care when storing objects in the vehicle. Put luggage or cargo in the trunk if possible.
Do not pile luggage or cargo higher than the seat backrests.
Keep compartment lids closed. This will help to prevent stored objects from being thrown about and injuring vehicle occupants during
Rbraking
Rvehicle maneuvers
Ran accident
Stowage compartments in the front
Glove box i Depending on the vehicle's equipment, you will find the following installed in the glove box: an audio and video AUX jack, a USB socket or Media Interface, a universal interface for portable audio equipment, e.g. for an iPod or USB device, and a bracket for
a remote control (see the COMAND section in this Operator's Manual).
X To open: press marking :.
Stowage areas
439
i The glove box can be ventilated
(Y page 303).
Stowage compartment under the armrest i Theº Roadside Assistance call button
(Y page 452) and the E MB Info call button (Y page 452) are located in the stowage compartment under the armrest.
i In the stowage compartment, there is a
partition which can be used to divide up the stowage compartment.
X To open: press button :. X To close: fold glove box flap ; upwards
until it engages.
The glove box can only be locked and unlocked using the mechanical key.
1 Glove box unlocked
2 Glove box locked
Eyeglasses compartment
