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Safety systems Display messages !÷ currently unavail‐ able See Owner's Manual
!÷ inoperative See Owner's Manual
Possible causes/consequences and M Solutions ABS (Anti-lock Braking System), ESP® (Electronic Stability Pro- gram), BAS (Brake Assist), PRE-SAFE®, the HOLD function, hill start assist and ESP® trailer stabilisation are temporarily unavail- able. The adaptive brake lights and COLLISION PREVENTION ASSIST/ COLLISION PREVENTION ASSIST PLUS may also have failed. In addition, the ÷, å and ! warning lamps light up in the instrument cluster. ATTENTION ASSIST is deactivated. Possible causes: Rself-diagnosis is not yet complete. Rthe on-board voltage may be insufficient. 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 affec- ted. The braking distance may increase in an emergency braking situation. If ESP® is not operational, ESP® is unable to stabilise the vehicle. There is an increased danger of skidding and risk of an accident. X Carefully drive on a suitable stretch of road, making slight steer-
ing movements, at a speed above 20 km/h. If the display message disappears, the functions mentioned above are available again.
If the display message continues to be displayed: X Drive on carefully. X Visit a qualified specialist workshop.
ABS, ESP®, BAS, PRE-SAFE®, the HOLD function, hill start assist and ESP® trailer stabilisation are unavailable due to a malfunction. The adaptive brake lights and COLLISION PREVENTION ASSIST/ COLLISION PREVENTION ASSIST PLUS may also have failed. In addition, the J, ÷, å and ! warning lamps light up in the instrument cluster. ATTENTION ASSIST is deactivated. G WARNING
228 Display messages
Display messages
÷ currently unavail‐ able See Owner's Manual
Possible causes/consequences and M Solutions 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 affec- ted. The braking distance may increase in an emergency braking situation. If ESP® is not operational, ESP® is unable to stabilise the vehicle. There is an increased danger of skidding and risk of an accident. X Drive on carefully. X Visit a qualified specialist workshop immediately.
ESP®, BAS, PRE-SAFE®, the HOLD function, hill start assist and ESP® trailer stabilisation are temporarily unavailable. The adaptive brake lights and COLLISION PREVENTION ASSIST/ COLLISION PREVENTION ASSIST PLUS may also have failed. In addition, the ÷ and å warning lamps light up in the instrument cluster. ATTENTION ASSIST is deactivated. The self-diagnosis function, for example, may not be complete. G WARNING The brake system continues to function normally, but without the functions listed above. The braking distance may thus increase in an emergency braking situation. If ESP® is not operational, ESP® is unable to stabilise the vehicle. There is an increased danger of skidding and risk of an accident. X Carefully drive on a suitable stretch of road, making slight steer-
ing movements, at a speed above 20 km/h. If the display message disappears, the functions mentioned above are available again.
If the display message continues to be displayed: X Drive on carefully. X Visit a qualified specialist workshop.
Display messages
229
Display messages ÷ inoperative See Owner's Manual
T! ÷ inoperative See Owner's Manual
Possible causes/consequences and M Solutions ESP®, BAS, PRE-SAFE®, the HOLD function, hill start assist and ESP® trailer stabilisation are not available due to a malfunction. The adaptive brake lights and COLLISION PREVENTION ASSIST/ COLLISION PREVENTION ASSIST PLUS may also have failed. In addition, the ÷ and å warning lamps light up in the instrument cluster. ATTENTION ASSIST is deactivated. G WARNING The brake system continues to function normally, but without the functions listed above. The braking distance may thus increase in an emergency braking situation. If ESP® is not operational, ESP® is unable to stabilise the vehicle. There is an increased danger of skidding and risk of an accident. X Drive on carefully. X Visit a qualified specialist workshop.
EBD (electronic brake force distribution), ABS, ESP®, BAS, PRE- SAFE®, the HOLD function, hill start assist and ESP® trailer stabi- lisation are unavailable due to a malfunction. The adaptive brake lights and COLLISION PREVENTION ASSIST/ COLLISION PREVENTION ASSIST PLUS may also have failed. In addition, the ÷, å and ! warning lamps light up in the instrument cluster and a warning tone sounds. ATTENTION ASSIST 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, for example, if you brake hard. The steerability and braking characteristics may be severely affec- ted. The braking distance may increase in an emergency braking situation. If ESP® is not operational, ESP® is unable to stabilise the vehicle. There is an increased danger of skidding and risk of an accident. X Drive on carefully. X Visit a qualified specialist workshop immediately.
230 Display messages
Display messages Release parking brake
Parking brake See Owner's Manual
Possible causes/consequences and M Solutions The red ! indicator lamp flashes and a warning tone sounds. A condition for automatic release of the electric parking brake is not fulfilled (Y page 163). You are driving with the electric parking brake applied. X Release the electric parking brake manually.
The red ! indicator lamp flashes and a warning tone sounds. You are making an emergency stop using the electric parking brake (Y page 163). The yellow ! warning lamp lights up. The electric parking brake is malfunctioning. To apply: X Switch the ignition off. X Press the electric parking brake handle for at least ten seconds. X Move the transmission selector lever to P. X Consult a qualified specialist workshop. The yellow ! warning lamp and the red ! indicator lamp are lit. The electric parking brake is malfunctioning. To release: X Switch off the ignition and turn it back on. X Release the electric parking brake manually. or X Release the electric parking brake automatically (Y page 163). If the electric parking brake still cannot be released: X Do not drive on. X Consult a qualified specialist workshop.
Display messages
231
Display messages
Possible causes/consequences and M Solutions The red ! indicator lamp flashes and the yellow ! warning lamp is lit. The electric parking brake is malfunctioning. To release: X Switch off the ignition and turn it back on. X Release the electric parking brake manually. To apply: X Switch off the ignition and turn it back on. X Apply the electric parking brake manually. If the red ! indicator lamp continues to flash: X Do not drive on. X Secure the vehicle against rolling away (Y page 326). X Move the transmission selector lever to P. X Turn the front wheels towards the kerb. X Consult a qualified specialist workshop. The yellow ! warning lamp lights up. The red ! indicator lamp flashes for about ten seconds after the electric parking brake has been applied or released. It then goes out or remains lit. The electric parking brake is malfunctioning. X Switch off the ignition and turn it back on. X Apply the electric parking brake. If it is not possible to apply the electric parking brake: X Move the transmission selector lever to P. X Visit a qualified specialist workshop. If it is not possible to release the electric parking brake: X Release the electric parking brake automatically (Y page 163). If the electric parking brake still cannot be released: X Consult a qualified specialist workshop. The yellow ! warning lamp lights up. If you manually apply or release the electric parking brake, the red ! indicator lamp flashes. The electric parking brake is malfunctioning. It is not possible to apply the electric parking brake manually. X Move the transmission selector lever to P. X Visit a qualified specialist workshop.
232 Display messages
Display messages Parking brake inop‐ erative
Turn on the igni‐ tion to release the parking brake Brake immediately
Possible causes/consequences and M Solutions The yellow ! warning lamp lights up. The red ! indicator lamp flashes for about ten seconds after the electric parking brake has been applied or released. It then goes out or remains lit. The electric parking brake is malfunctioning, e.g. because of over- voltage or undervoltage. X Rectify the cause of the overvoltage or undervoltage, e.g. by
charging the battery or restarting the engine.
X Apply or release the electric parking brake. If it remains impossible to apply or release the electric parking brake: X Switch off the ignition and turn it back on. X Apply or release the electric parking brake. If the electric parking brake still cannot be released: X Consult a qualified specialist workshop. The display message is only shown while the vehicle is in motion. The red ! indicator lamp flashes and the yellow ! warning lamp is lit. It is not possible to apply the electric parking brake manually. X Move the transmission selector lever to P. X Visit a qualified specialist workshop. The red ! indicator lamp lights up. You attempted to release the electric parking brake while the igni- tion was switched off. X Turn the key to position 1 in the ignition lock.
Vehicles with manual transmission: a malfunction has occurred while the HOLD function was activated. A tone may also sound at regular intervals. If you attempt to lock the vehicle, the tone becomes louder. You cannot start the engine. X Paying attention to the traffic situation, immediately depress the
brake pedal firmly and hold until the display message disap- pears.
X Secure the vehicle against rolling away (Y page 162).
You can restart the engine.
Display messages
233
Display messages Check brake fluid level
Check brake pad wear PRE-SAFE inoperative See Owner's Manual Collision Preven‐ tion Assist Plus currently unavail‐ able See Owner's Manual
Possible causes/consequences and M Solutions There is insufficient brake fluid in the brake fluid reservoir. In addition, the red J warning lamp lights up in the instrument cluster and a warning tone sounds. G WARNING The braking efficiency 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 Secure the vehicle against rolling away (Y page 162). X Consult a qualified specialist workshop. X Do not top up the brake fluid. This does not correct the fault.
The brake pads/linings have reached their wear limit. X Visit a qualified specialist workshop.
Important functions of PRE-SAFE® have failed. All other occupant safety systems, e.g. airbags, remain available. X Visit a qualified specialist workshop immediately.
COLLISION PREVENTION ASSIST PLUS is temporarily inoperative. Possible causes: Rthe radar sensor cover in the radiator trim is dirty. Rthe function is impaired due to heavy rain or snow. Rthe radar sensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radio sta- tions or other sources of electromagnetic radiation.
Rthe system is outside the operating temperature range. Rthe on-board voltage is too low. Once the causes listed above no longer apply, the display message goes out. COLLISION PREVENTION ASSIST PLUS is operational again. 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 162). X Clean the radar sensor cover in the radiator grille
(Y page 291).
X Restart the engine.
234 Display messages
Display messages Collision Preven‐ tion Assist Plus inoperative PRE-SAFE Function currently limited See Own‐ er's Manual
Possible causes/consequences and M Solutions COLLISION PREVENTION ASSIST PLUS is malfunctioning. The dis- tance warning signal may also have failed. X Visit a qualified specialist workshop. Adaptive Brake Assist is temporarily inoperative. Possible causes: Rthe front bumper is dirty. Rthe function is impaired due to heavy rain or snow. Rthe radar sensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radio sta- tions or other sources of electromagnetic radiation.
Rthe system is outside the operating temperature range. Rthe on-board voltage is too low. Once the causes listed above no longer apply, the display message goes out. Adaptive Brake Assist is operational again. 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 162). X Clean the front bumper (Y page 291). X Restart the engine.
PRE-SAFE Function limited See Owner's Manual ü If the symbol appears in the multifunction display, a seat belt
Adaptive Brake Assist is faulty. The distance warning signal may also have failed. X Visit a qualified specialist workshop.
tongue has been inserted into a rear seat belt buckle. Further information on the status indicator for the rear seat belts (Y page 49).
Display messages
235
Display messages ý If the symbol appears in the multifunction display, a seat belt
Possible causes/consequences and M Solutions
tongue has not been inserted in a rear seat belt buckle. G WARNING A seat belt which is not worn correctly, or which has not been engaged in the seat belt buckle correctly, cannot provide the intended level of protection. This poses an increased risk of injury. X If necessary, ask the occupants in the rear to fasten their seat
belts (Y page 48).
Restraint sys. mal‐ function Consult workshop
Front left malfunc‐ tion Consult work‐ shop or Front right malfunction Consult workshop
Further information on the status indicator for the rear seat belts (Y page 49). There is a malfunction in the SRS (Supplemental Restraint Sys- tem). The 6 warning lamp also lights up in the instrument clus- ter. G WARNING The airbags or belt tensioners may either be triggered uninten- tionally or, in the event of an accident, may not be triggered. This poses an increased risk of injury. X Visit a qualified specialist workshop. Further information on occupant safety (Y page 40). SRS has malfunctioned at the front on the left or right. The 6
warning lamp also lights up in the instrument cluster. G WARNING The airbags or belt tensioners may either be triggered uninten- tionally or, in the event of an accident, may not be triggered. This poses an increased risk of injury. X Visit a qualified specialist workshop.236 Display messages
Display messages Rear left-hand side malfunction Consult workshop or Rear right-hand side malfunction Consult workshop
Left windowbag mal‐ function Consult workshop or Right windowbag malfunc‐ tion Consult work‐ shop
Possible causes/consequences and M Solutions SRS has malfunctioned at the rear on the left or right. The 6
warning lamp also lights up in the instrument cluster. G WARNING The airbags or belt tensioners may either be triggered uninten- tionally or, in the event of an accident, may not be triggered. This poses an increased risk of injury. X Visit a qualified specialist workshop. There is a malfunction in the left-hand and/or right-hand window- bag. The 6 warning lamp also lights up in the instrument clus- ter. G WARNING The left or right windowbag may either be triggered unintentionally or, in the event of an accident, may not be triggered. This poses an increased risk of injury. X Visit a qualified specialist workshop.Lights i Display messages about LEDs:
This display message will only appear if all the LEDs have failed. Display messages Left cornering light or Right cor‐ nering light
Possible causes/consequences and M Solutions The left or right-hand cornering light is faulty. X Check whether you are permitted to replace the bulb yourself
(Y page 114).
or X Visit a qualified specialist workshop.
Left dipped beam or Right dipped beam
The left or right-hand dipped-beam headlamp is faulty. X Check whether you are permitted to replace the bulb yourself
(Y page 114).
or X Visit a qualified specialist workshop.
Display messages Trailer Left-hand tail lamporTrailer Right-hand tail lamp Trailer left indi‐ cator or Trailer right indicator Trailer brake lamp
Rear left indica‐ tor or Rear right indicator
Front left indica‐ tor or Front right indicator
Left mirror indica‐ tor or Right mir‐ ror indicator
3rd brake lamp
Display messages
237
Possible causes/consequences and M Solutions The left or right-hand trailer tail lamp is faulty. X Observe the separate operating instructions provided by the
trailer manufacturer.
The left or right-hand trailer turn signal lamp is faulty. X Observe the separate operating instructions provided by the
trailer manufacturer.
The trailer brake lamp is faulty. X Observe the separate operating instructions provided by the
trailer manufacturer.
The rear left-hand or rear right-hand turn signal is faulty. X Check whether you are permitted to replace the bulb yourself
(Y page 114).
or X Visit a qualified specialist workshop.
The front left-hand or front right-hand turn signal is faulty. X Check whether you are permitted to replace the bulb yourself
(Y page 114).
or X Visit a qualified specialist workshop. The turn signal in the left-hand or right-hand exterior mirror is faulty. X Check whether you are permitted to replace the bulb yourself
(Y page 114).
or X Visit a qualified specialist workshop. The third brake lamp is faulty. X Check whether you are permitted to replace the bulb yourself
(Y page 114).
or X Visit a qualified specialist workshop.
238 Display messages
Display messages Left brake lamp or Right brake lamp
Left-hand tail lamp/brake lamp or Right-hand tail lamp/brake lamp Left main beam or Right main beam
Number plate lamp
Front foglamp left or Front foglamp right
Rear foglamp
Front left parking lamp or Front right parking lamp
Possible causes/consequences and M Solutions The left or right-hand brake lamp is faulty. X Check whether you are permitted to replace the bulb yourself
(Y page 114).
or X Visit a qualified specialist workshop. The left or right-hand tail lamp/brake lamp is faulty. X Check whether you are permitted to replace the bulb yourself
(Y page 114)
or X Visit a qualified specialist workshop.
The left or right-hand main-beam headlamp is faulty. X Check whether you are permitted to replace the bulb yourself
(Y page 114).
or X Visit a qualified specialist workshop.
The left or right-hand licence plate lamp is faulty. X Check whether you are permitted to replace the bulb yourself
(Y page 114).
or X Visit a qualified specialist workshop.
The left-hand or right-hand front foglamp is faulty. X Check whether you are permitted to replace the bulb yourself
(Y page 114).
or X Visit a qualified specialist workshop.
The rear foglamp is faulty. X Check whether you are permitted to replace the bulb yourself
(Y page 114).
or X Visit a qualified specialist workshop.
The front left or front right parking lamp is faulty. X Check whether you are permitted to replace the bulb yourself
(Y page 114).
or X Visit a qualified specialist workshop.
Display messages Reversing light
Left tail lamp or Right tail lamp
Left daytime driv‐ ing lamp or Right daytime driving lamp Intell. Light Sys‐ tem inoperative Malfunction See Owner's Manual
AUTO lights inoper‐ ative Switch off lights
Display messages
239
Possible causes/consequences and M Solutions The reversing lamp is faulty. X Check whether you are permitted to replace the bulb yourself
(Y page 114).
or X Visit a qualified specialist workshop.
The left or right-hand tail lamp is faulty. X Check whether you are permitted to replace the bulb yourself
(Y page 114).
or X Visit a qualified specialist workshop. The left-hand or right-hand daytime driving lamp is faulty. X Check whether you are permitted to replace the bulb yourself
(Y page 114).
or X Visit a qualified specialist workshop.
The Intelligent Light System is faulty. The lights remain available without the Intelligent Light System. X Visit a qualified specialist workshop.
The exterior lighting is faulty. X Visit a qualified specialist workshop. Vehicles with trailer tow hitch: a fuse may have blown. X Check the fuses (Y page 312). X If necessary, replace the blown fuse. Observe the warning notes
as you do so.
If the display message continues to be displayed: X Visit a qualified specialist workshop. The light sensor is faulty. 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 Ã.
240 Display messages
Display messages Adaptive Main-beam Assist inoperative Adaptive Main-beam Assist currently unavailable See Owner's Manual
Possible causes/consequences and M Solutions Adaptive Highbeam Assist is faulty. X Visit a qualified specialist workshop.
Adaptive Highbeam Assist is deactivated and temporarily inoper- ative. Possible causes: Rthe windscreen is dirty in the camera's field of vision. Rvisibility is impaired due to heavy rain, snow or fog. X Clean the windscreen. If the system detects that the camera is fully operational again, the Adaptive Main-beam Assist available again message is displayed. Adaptive Highbeam Assist is operational again.
Engine Display messages Top up coolant See Owner's Manual
Possible causes/consequences and M Solutions The coolant level is too low. ! Avoid making long journeys with too little coolant in the engine
cooling system. The engine will otherwise be damaged.
X Top up the coolant, observing the warning notes before doing
so (Y page 285).
X If the coolant needs topping up more often than usual, have the engine coolant system checked at a qualified specialist work- shop.
? The fan motor is faulty.
X If the coolant temperature is below 120 †, you can continue
driving to the nearest qualified specialist workshop.
X Avoid heavy loads on the engine as you do so, e.g. driving in
mountainous terrain and stop-start traffic.
Display messages
241
Display messages Coolant Stop car, turn engine off
Possible causes/consequences and M Solutions The coolant is too hot. A warning tone also sounds. G WARNING Never drive with an overheated engine. Driving when your engine is overheated can cause some fluids which may have leaked into the engine compartment to catch fire. Steam from an overheated engine can cause serious burns, which can occur just by opening the bonnet. There is a risk of injury. X Stop the vehicle immediately, paying attention to road and traf-
fic conditions, and switch off the engine.
X Secure the vehicle against rolling away (Y page 162). X Wait until the engine has cooled down. X Make sure that the air supply to the engine radiator is not
blocked, e.g. by frozen slush.
X Do not start the engine again until the display message goes out and the coolant temperature is below 120 †. The engine may otherwise be damaged.
X Pay attention to the coolant temperature display. X If the temperature increases again, visit a qualified specialist
workshop immediately.
Under normal operating conditions and with the specified coolant level, the coolant temperature may rise to 120 †.
# The battery is not being charged.
A warning tone also sounds. Possible causes: Rfaulty alternator Rtorn poly-V-belt Ra malfunction in the electronics X Stop the vehicle immediately, paying attention to road and traf-
fic conditions, and switch off the engine.
X Open the bonnet. 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 immediately.
242 Display messages
Display messages Check eng. oil lev. when next refuelling
Possible causes/consequences and M Solutions The engine oil level has dropped to the minimum level. A warning tone also sounds. X Check the oil level when next refuelling, at the latest
(Y page 284).
X If necessary, top up the engine oil (Y page 285). X Have the engine checked at a qualified specialist workshop if
the engine oil needs topping up more often than usual.
æ Reserve fuel level
The fuel level has dropped into the reserve range. The auxiliary heating cannot be operated. X Refuel at the nearest filling station. ç There is very little fuel in the fuel tank.
The auxiliary heating cannot be operated. X Refuel at the nearest filling station without fail. Vehicles with a diesel engine: the engine air filter is dirty 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.
Possible causes/consequences and M Solutions Based on certain criteria, ATTENTION ASSIST has detected fatigue or a lack of concentration on the part of the driver. A warning tone also sounds. X If necessary, take a break. During long journeys, take regular breaks in good time so that you get enough rest.
ATTENTION ASSIST is inoperative. X Visit a qualified specialist workshop.
¸ Replace air cleaner element Clean fuel filter
Driving systems Display messages À Attention Assist Drowsiness detec‐ ted
À Attention Assist inoperative
Display messages
243
Display messages Speed Limit Assist currently unavail‐ able See Owner's Manual
Speed Limit Assist: Unavailable in this country
Speed Limit Assist inoperative
ë Off
Radar sensor deac‐ tivated See Own‐ er's Manual
Possible causes/consequences and M Solutions Speed Limit Assist is deactivated and temporarily inoperative. Possible causes: Rthe windscreen is dirty in the camera's field of vision. Rvisibility is impaired due to heavy rain, snow or fog. X Clean the windscreen. If the system detects that the camera is fully operational, the dis- play message disappears. Speed Limit Assist is operational again.
Speed Limit Assist is only available in certain countries. X Drive on.
Speed Limit Assist is available again as soon as you drive into a country in which its use is approved.
Speed Limit Assist is faulty. X Visit a qualified specialist workshop. The HOLD function is deactivated. The vehicle is skidding. A warning tone also sounds. X Reactivate the HOLD function later (Y page 181).
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 181).
The radar sensor system is deactivated. X Switch on the radar sensor system (Y page 223).
244 Display messages
Display messages Lane Keeping Assist currently unavailable See Owner's Manual
Lane Keeping Assist inoperative Blind Spot Assist currently unavail‐ able See Owner's Manual
Possible causes/consequences and M Solutions Lane Keeping Assist is deactivated and temporarily inoperative. Possible causes: Rthe windscreen is dirty in the camera's field of vision. 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. Once the causes listed above no longer apply, the display message goes out. Lane Keeping Assist is operational again. 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 162). X Clean the windscreen.
Lane Keeping Assist is faulty. X Visit a qualified specialist workshop. Blind Spot Assist is temporarily inoperative. You have established the electrical connection between the trailer and your vehicle. X Press a on the steering wheel to confirm the display mes-
sage.
Blind Spot Assist is deactivated while towing a trailer.
Display messages
245
Display messages
Blind Spot Assist inoperative
Park Assist cancel‐ led
Possible causes/consequences and M Solutions Blind Spot Assist is temporarily inoperative. Possible causes: Rthe sensors are dirty. Rthe 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 sta- tions or other sources of electromagnetic radiation.
The yellow 9 indicator lamps also light up in the exterior mir- rors. Once the causes listed above no longer apply, the display message goes out. Blind Spot Assist is operational again. 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 162). X Clean the sensors (Y page 291). X Restart the engine. Blind Spot Assist is faulty. The yellow 9 indicator lamps also light up in the exterior mir- rors. X Visit a qualified specialist workshop. The driver's door is open and the driver's seat belt has not been fastened. X Repeat the parking process with the seat belt fastened and the
driver's door closed.
You inadvertently touched the multifunction steering wheel while steering intervention was active. X While steering intervention is active, make sure not to touch the
multifunction steering wheel.
The vehicle has started to skid and ESP® has intervened. X Use Active Parking Assist again later (Y page 186).
246 Display messages
Display messages Park Assist inoper‐ ative
Possible causes/consequences and M Solutions You have just carried out a large number of turning or parking manoeuvres. Active Parking Assist will become available again after approx- imately ten minutes (Y page 186). X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Switch off and restart the engine. If the display message continues to be displayed: X Visit a qualified specialist workshop. PARKTRONIC is faulty. X Visit a qualified specialist workshop.
deactivated automatically, a warning tone also sounds.
DISTRONIC PLUS off DISTRONIC PLUS has been deactivated (Y page 173). If it was DISTRONIC PLUS available again DISTRONIC PLUS cur‐ rently unavailable See Owner's Manual
DISTRONIC PLUS is operational again after having been tempo- rarily unavailable. You can now reactivate DISTRONIC PLUS (Y page 173). DISTRONIC PLUS is temporarily inoperative. Possible causes: Rthe function is impaired due to heavy rain or snow. Rthe sensors in the radiator trim are dirty Rthe radar sensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radio sta- tions 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. Once the causes listed above no longer apply, the display message goes out. DISTRONIC is operational again. 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 162). X Clean the sensors in the radiator trim (Y page 291). X Restart the engine.
Display messages
247
Display messages DISTRONIC PLUS inoperative
DISTRONIC PLUS inactive
DISTRONIC PLUS - - - km/h
DISTRONIC PLUS and SPEEDTRONIC inop‐ erative Cruise control and SPEEDTRONIC inop‐ erative Limit --- km/h Cruise control - - - km/h
120 km/h! Maximum speed exceeded
Possible causes/consequences and M Solutions DISTRONIC PLUS is faulty. Adaptive Brake Assist may also have failed. A warning tone also sounds. X Visit a qualified specialist workshop. 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. An activation condition for DISTRONIC PLUS is not fulfilled. X Check the activation conditions for DISTRONIC PLUS
(Y page 175).
DISTRONIC PLUS and SPEEDTRONIC are faulty. A warning tone also sounds. X Visit a qualified specialist workshop.
SPEEDTRONIC and cruise control are malfunctioning. A warning tone also sounds. X Visit a qualified specialist workshop.
While depressing the accelerator pedal beyond the pressure point (kickdown), SPEEDTRONIC cannot be activated.
A condition for activating cruise control has not been met. You have tried to store a speed below 30 km/h, for example. X If conditions permit, drive faster than 30 km/h and store the
speed.
X Check the activation conditions for cruise control
(Y page 169).
Only for certain countries: the maximum speed has been excee- ded. In addition, the multifunction display shows 120 km/h!. X Drive more slowly.
248 Display messages
Tyres Display messages Tyre pressure Check tyres
Possible causes/consequences and M Solutions The tyre pressure loss warning system has detected a significant loss in pressure. A warning tone also sounds. G WARNING With tyre pressures which are too low, there is a risk of the fol- lowing hazards: Rthe tyres may burst, especially as the load and vehicle speed
increase.
Rthe tyres may wear excessively and/or unevenly, which may
greatly impair tyre 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 manoeuvres. Pay attention to the traffic conditions as you do so.
X Secure the vehicle against rolling away (Y page 162). X Check the tyres and, if necessary, follow the instructions for a
X Check the tyre pressures and, if necessary, correct the tyre
flat tyre (Y page 298).
pressure.
Check tyre pres‐ sures then restart Run Flat Indicator Run Flat Indicator inoperative Please correct the tyre pressure
X Restart the tyre pressure loss warning system when the tyre
pressure is correct (Y page 321).
The tyre pressure loss warning system generated a display mes- sage and has not been restarted since. X Set the correct tyre pressure in all four tyres. X Restart the tyre pressure loss warning system (Y page 321). The tyre pressure loss warning system is faulty. X Visit a qualified specialist workshop. The tyre pressure is too low in at least one of the tyres, or the tyre pressure difference between the wheels is too great. X Check the tyre pressures at the next opportunity
(Y page 322).
X If necessary, correct the tyre pressure. X Restart the tyre pressure monitor (Y page 324).
Display messages Check tyres
Caution, tyre defect
Display messages
249
Possible causes/consequences and M Solutions The tyre pressure in one or more tyres has dropped significantly. The wheel position is displayed in the multifunction display. A warning tone also sounds. G WARNING With tyre pressures which are too low, there is a risk of the fol- lowing hazards: Rthe tyres may burst, especially as the load and vehicle speed
increase.
Rthe tyres may wear excessively and/or unevenly, which may
greatly impair tyre 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 manoeuvres. Pay attention to the traffic conditions as you do so.
X Secure the vehicle against rolling away (Y page 162). X Check the tyres and, if necessary, follow the instructions for a
flat tyre (Y page 298).
X Check the tyre pressure (Y page 322). X If necessary, correct the tyre pressure. The tyre pressure in one or more tyres has dropped suddenly. The wheel position is displayed in the multifunction display. G WARNING If you drive with a flat tyre, there is a risk of the following hazards: Ra flat tyre affects the ability to steer or brake the vehicle. Ryou could lose control of the vehicle. Rcontinued driving with a flat tyre 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 manoeuvres. Pay attention to the traffic conditions as you do so.
X Secure the vehicle against rolling away (Y page 162). X Check the tyres and, if necessary, follow the instructions for a
flat tyre (Y page 298).
250 Display messages
Display messages Tyre pressure mon‐ itor currently unavailable
Wheel sensor(s) missing
Tyre press. moni‐ tor inoperative No wheel sensors
Tyre pressure mon‐ itor inoperative
Vehicle Display messages To start engine, shift to either P or N Auxiliary battery Malfunction
Depress brake to start engine
Possible causes/consequences and M Solutions Due to a source of radio interference, no signals can be received from the wheel sensors. The tyre pressure monitor is temporarily malfunctioning. X Drive on.
The tyre pressure monitor restarts automatically as soon as the cause has been rectified.
There is no signal from the tyre pressure sensor of one or several wheels. The pressure of the affected tyre is not displayed in the multifunction display. X Have the faulty tyre pressure sensor replaced at a qualified spe-
cialist workshop.
The wheels fitted do not have a suitable tyre pressure sensor. The tyre pressure monitor is deactivated. X Fit wheels with suitable tyre pressure sensors.
The tyre pressure monitor is activated automatically after driv- ing for a few minutes.
The tyre pressure monitor is faulty. X Visit a qualified specialist workshop.
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 at the next opportunity. X Until then, set the automatic transmission to position P before
you switch off the engine.
X Before leaving the vehicle, apply the electric parking brake. You have attempted to start the engine with the transmission in position N without depressing the brake pedal. X Depress the brake pedal.
Display messages
251
Possible causes/consequences and M Solutions You have attempted to shift the transmission to position R or D without starting the engine. X Start the engine. X Depress the brake pedal. i It is only possible to shift the transmission from position P to the desired position if you depress the brake pedal. Only then can the parking lock be deactivated. If you do not depress the brake pedal, the DIRECT SELECT lever can still be moved but the parking lock remains engaged.
i At transmission fluid temperatures below Ò20 † you can only shift out of position P into another transmission position when the engine is running.
You have attempted to move the transmission selector lever to position R, N or D without depressing the brake pedal. X Depress the brake pedal. The driver's door is open and the transmission is in position R, N or D. A warning tone also sounds. X Shift the transmission to position P. X Secure the vehicle against rolling away (Y page 162). 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 Consult a qualified specialist workshop. 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. The automatic transmission is malfunctioning. You cannot drive in reverse. X Visit a qualified specialist workshop.
Display messages To shift out of P or N depress brake and start engine
Depress brake to shift out of posi‐ tion P Risk of vehicle rolling Transmission not in P
Without changing gear, consult workshop
Only select Park (P) when vehicle is station‐ ary Reversing not poss. Consult work‐ shop
252 Display messages
Display messages Transmission mal‐ function Transmission mal‐ function Stop
Stop vehicle Shift to P Leave engine running
Possible causes/consequences and M Solutions The automatic transmission is malfunctioning. X Visit a qualified specialist workshop. The automatic transmission is malfunctioning. 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 162). X Consult a qualified specialist workshop. The automatic transmission has overheated. X Drive on carefully.
If the display message disappears, the automatic transmission is available again.
If the display message continues to be displayed: 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 162). X Wait until the automatic transmission has cooled off and the
display message goes out.
N The boot lid is open. X Close the boot lid. M The bonnet is open.
A warning tone also sounds. G WARNING The open bonnet may then 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 bonnet.
Active bonnet mal‐ function See Own‐ er's Manual C At least one door is open. A warning tone also sounds.
The active bonnet (pedestrian protection) is not active due to a malfunction or because it has already been triggered. X Visit a qualified specialist workshop.
X Close all doors.
Display messages
253
Display messages Check trailer hitch lock
Possible causes/consequences and M Solutions The trailer tow hitch is not correctly engaged. A warning tone also sounds. X Stop the vehicle immediately, paying attention to road and traf-
fic conditions, and switch off the engine.
X Apply the electric parking brake. X Engage the trailer coupling's ball coupling in the end position
(Y page 203).
Otherwise, the trailer may detach itself.
Ð Power steering mal‐ function See Own‐ er's Manual
inoperative Bat‐ tery low
The power steering assistance is faulty. A warning tone also sounds. 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
