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faulty. X Visit a qualified specialist workshop.
The third brake lamp is faulty. X Visit a qualified specialist workshop.
The left or right-hand tail lamp/brake lamp is faulty. 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 148).
or X Visit a qualified specialist workshop.
Display messages
299
Display messages Left licence plate lamporRight licence plate lamp Rear foglamp Front left parking lamporFront right parking lamp Left revers. lamporRight rev‐ ers. lamp Rear left side marker lamporRear right side marker lamp Left daytime driv‐ ing lamporRight daytime driving lamp Intell. Light Sys‐ tem inoperative Malfunction See Owner's Manual
Possible causes/consequences and M Solutions The left or right-hand licence plate lamp is faulty. X Visit a qualified specialist workshop.
The rear foglamp is faulty. X Visit a qualified specialist workshop.
The front left or front right parking lamp is faulty. X Visit a qualified specialist workshop.
The left or right-hand reversing lamp is faulty. X Visit a qualified specialist workshop.
The rear left or right side marker lamp is faulty. X Visit a qualified specialist workshop.
The left-hand or right-hand daytime driving lamp is faulty. 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.
300 Display messages
Display messages
AUTO lights inoper‐ ative Switch off lights Adaptive Main-beam Assist currently unavailable See Owner's Man‐ ualorAdaptive High‐ beam Assist Plus currently unavail‐ able See Owner's Manual
Adaptive Main-beam Assist inopera‐ tiveorAdaptive Highbeam Assist Plus inoperative
Possible causes/consequences and M Solutions Vehicles with trailer tow hitch: a fuse may have blown. X Check the fuses (Y page 399). 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.
Adaptive Highbeam Assist or Adaptive Highbeam Assist Plus is deactivated and temporarily not operational. 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 or Adap‐ tive Highbeam Assist Plus available again message is displayed. Adaptive Highbeam Assist or Adaptive Highbeam Assist Plus is operational again. Adaptive Highbeam Assist or Adaptive Highbeam Assist Plus is faulty. X Visit a qualified specialist workshop.
Display messages
301
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 368).
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.
Coolant Stop vehi‐ cle Switch engine off
X Avoid heavy loads on the engine as you do so, e.g. driving in
mountainous terrain and stop-start traffic.
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 199). 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 †.
302 Display messages
Display messages # The battery is not being charged.
Possible causes/consequences and M Solutions
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 Secure the vehicle against rolling away (Y page 199). 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.
Check eng. oil lev. when next refuelling
Add 1 litre engine oil when next refu‐ elling
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 367).
X If necessary, top up the engine oil (Y page 367). X Have the engine checked at a qualified specialist workshop if
the engine oil needs topping up more often than usual.
Information on approved engine oils can be obtained from any qualified specialist workshop or on the Internet at http:// bevo.mercedes-benz.com.
AMG vehicles: the engine oil level is too low. X Check the oil level when next refuelling, at the latest
(Y page 367).
X If necessary, top up the engine oil (Y page 367). X Have the engine checked at a qualified specialist workshop if
the engine oil needs topping up more often than usual.
Information on approved engine oils can be obtained from any qualified specialist workshop or on the Internet at http:// bevo.mercedes-benz.com.
Display messages
303
Display messages Reserve fuel level
Possible causes/consequences and M Solutions The fuel level has dropped into the reserve range. Operation of the auxiliary heating is deactivated if the fuel level drops into the reserve range. X Refuel at the nearest filling station. C There is very little fuel in the fuel tank.
¸ Please replace air filter Clean the fuel fil‐ ter ¯ Refill AdBlue at workshop See Own‐ er's Manual ¯ Refill AdBlue at workshop No start in .. km ¯ Refill AdBlue at workshop Eng. start not possible ¯ Check AdBlue See Owner's Manual
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.
The AdBlue® level has fallen below the reserve range. A warning tone also sounds. X Have AdBlue® refilled as soon as possible at a qualified spe-
cialist workshop.
The AdBlue® level is only sufficient for the indicated distance. A warning tone also sounds. X Have AdBlue® refilled as soon as possible at a qualified spe-
cialist workshop.
The AdBlue® tank is empty. A warning tone also sounds. You can no longer start the engine. X Consult a qualified specialist workshop immediately.
The AdBlue® system is malfunctioning. A warning tone also sounds. X Visit a qualified specialist workshop.
304 Display messages
Display messages ¯ Eng. start not pos‐ sible in ..km ¯ Eng. start not pos‐ sible
Driving systems Display messages À Attention Assist: Take a break!
À Attention Assist inoperative ¨or° Vehicle rising ¨or° Vehicle rising Please wait
¨or° Stop vehicle Vehi‐ cle too low
Possible causes/consequences and M Solutions The AdBlue® system is malfunctioning. A warning tone also sounds. X Visit a qualified specialist workshop immediately.
The AdBlue® system is malfunctioning. A warning tone also sounds. You can no longer start the engine. X Consult a qualified specialist workshop immediately.
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.
Your vehicle is adjusting to the level you have selected.
The vehicle level is too low when the vehicle is stationary. A warn- ing tone also sounds. X Do not pull away.
The vehicle level is set when the display message disappears.
You have pulled away while the vehicle level is still too low. AIRMATIC sets the vehicle to the selected level after a short period. 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 199). X Wait until the display message disappears before pulling away.
Display messages
305
Display messages
¨or° Malfunction
Traffic Sign Assist currently unavailable See Owner's Manual
Traffic Sign Assist inoperative
ë Off
Possible causes/consequences and M Solutions AIRMATIC is faulty. A warning tone also sounds. X Do not drive at speeds above 80 km/h. X Make only slight steering movements. Otherwise, the front
wings or the tyres could be damaged if the steering movement is too great.
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 char- acteristics may be affected. X Do not drive at speeds above 80 km/h. X Visit a qualified specialist workshop. Traffic Sign Assist is deactivated and temporarily inoperative. Pos- sible 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. Traffic Sign Assist is operational again.
Traffic Sign 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 221).
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 221).
306 Display messages
Display messages Lane Keeping Assist currently unavailable See Owner's Man‐ ualorActive Lane Keeping Assist cur‐ rently unavailable See Owner's Manual
Lane Keeping Assist inopera‐ tiveorActive Lane Keeping Assist inoperative
Possible causes/consequences and M Solutions Lane Keeping Assist or Active 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 or Active 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 199). X Clean the windscreen.
Lane Keeping Assist or Active Lane Keeping Assist is faulty. X Visit a qualified specialist workshop.
Display messages
307
Display messages Blind Spot Assist currently unavail‐ able See Owner's ManualorActive Blind Spot Assist currently unavail‐ able See Owner's Manual
Blind Spot Assist inopera‐ tiveorActive Blind Spot Assist inoper‐ ative Park Assist cancel‐ led
Possible causes/consequences and M Solutions Blind Spot Assist or Active Blind Spot Assist is temporarily inop- erative. 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 or Active 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 199). X Clean the sensors (Y page 375). X Restart the engine.
Blind Spot Assist or Active Blind Spot Assist is deactivated while towing a trailer. 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 or Active 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.
308 Display messages
Display messages
Park Assist inoper‐ ative
Possible causes/consequences and M Solutions 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 232). 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 232). 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. The vehicle is parked. A warning tone also sounds. The display message disappears automatically.
Park Assist switched off DISTRONIC PLUS off DISTRONIC PLUS has been deactivated (Y page 211). DISTRONIC PLUS available again
DISTRONIC PLUS is operational again after having been tempo- rarily unavailable. You can now reactivate DISTRONIC PLUS (Y page 211).
If it was not deactivated by the driver, a warning tone also sounds.
Display messages
309
Display messages DISTRONIC PLUS cur‐ rently unavailable See Owner's Manual
Possible causes/consequences and M Solutions DISTRONIC PLUS is temporarily inoperative. DISTRONIC PLUS Steering Assist is also temporarily inoperative. Possible causes: Rthe function is impaired due to heavy rain or snow. Rthe sensors in the radiator trim and in the bumpers 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 199). X Clean the sensors in the radiator grille and the bumper
(Y page 375).
X Restart the engine. DISTRONIC PLUS is faulty. BAS PLUS and PRE-SAFE® Brake may also have failed. The following may have also failed: RBAS PLUS RPRE-SAFE® Brake RDISTRONIC PLUS Steering Assist 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 211).
DISTRONIC PLUS inoperative
DISTRONIC PLUS sus‐ pended
DISTRONIC PLUS - - - km/h
310 Display messages
Display messages DISTRONIC PLUS and SPEEDTRONIC inop‐ erative
DTR+: steering assist. currently unavailable See Owner's Manual
DTR+: steering assistant inopera‐ tive
Cruise control and SPEEDTRONIC inop‐ erative Limit --- km/h
Possible causes/consequences and M Solutions DISTRONIC PLUS and SPEEDTRONIC are faulty. DISTRONIC PLUS Steering Assist is therefore unavailable. A warning tone also sounds. X Visit a qualified specialist workshop.
DISTRONIC PLUS Steering Assist is temporarily inoperative. Pos- sible 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. DISTRONIC PLUS Steering 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 199). X Clean the windscreen.
DISTRONIC PLUS Steering Assist is faulty. However, the DISTRONIC PLUS functions are still available. 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.
Display messages
311
Display messages Cruise control - - - km/h
120 km/h Maximum speed exceeded
Possible causes/consequences and M Solutions 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 205).
Only for certain countries: the maximum speed has been excee- ded. In addition, the multifunction display shows 120 km/h!. X Drive more slowly.
312 Display messages
Tyres Display messages Tyre pressure Check tyres
Run Flat Indicator then restart Run Flat Indicator
Run Flat Indicator Inoperative Rectify tyre pressure
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 199). 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 385).
pressure.
X Restart the tyre pressure loss warning system when the tyre
pressure is correct (Y page 410).
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 410). 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 410).
X If necessary, correct the tyre pressure. X Restart the tyre pressure monitor (Y page 412).
Display messages
313
Display messages Check tyre(s)
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.
Warning tyre defect
X Secure the vehicle against rolling away (Y page 199). X Check the tyres and, if necessary, follow the instructions for a
flat tyre (Y page 385).
X Check the tyre pressure (Y page 410). 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 199). X Check the tyres and, if necessary, follow the instructions for a
flat tyre (Y page 385).
314 Display messages
Display messages Tyre press. monitor currently unavail‐ able
Wheel sensor(s) missing
Tyre press. moni‐ tor inoperative No wheel sensors
Tyre pressure mon‐ itor Inoperative
Vehicle Display messages Apply brake to deselect Park (P) position Risk of vehicle rolling Transmission not in P
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 move the transmission selector lever to position D, R or N 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 199).
Display messages
315
Display messages Without changing gear, consult workshop
Possible causes/consequences and M Solutions 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
Only select Park (P) when vehicle is stationary N Saloon: the boot lid is open.
attention to road and traffic conditions.
X Shift the transmission to position P.
X Close the boot lid.
A Estate: the tailgate is open.
G WARNING When the engine is running, exhaust gases can enter the vehicle interior if the tailgate is open. There is a risk of poisoning. X Close the tailgate.
Mor? 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 Secure the vehicle against rolling away (Y page 199). 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.
316 Display messages
Display messages Rear left seat backrest not lockedorRear right seat backrest not locked Check trailer hitch lock
inoperative Bat‐ tery low
inoperative Refuel vehicle inoperative See Owner's Manual
Possible causes/consequences and M Solutions Saloon with through-loading feature in the rear bench seat: The backrest in the rear is not engaged on the left-hand and/or right-hand side. A warning tone also sounds. X Push the backrest back until it engages.
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 parking brake. X Engage the trailer coupling's ball coupling in the end position
(Y page 261).
The on-board voltage is too low. The auxiliary heating has switched itself off or cannot be switched on (Y page 168). X Drive for a longer distance.
The battery is being charged. The auxiliary heating is operational again as soon as the on-board electrical system voltage is suf- ficient.
There is too little fuel in the fuel tank. The auxiliary heating cannot be switched on (Y page 168). X Refuel at the nearest filling station.
The auxiliary heating has a temporary malfunction or is faulty. X When the vehicle is on a level surface and the engine has cooled down, make up to four attempts to switch on the auxiliary heat- ing, waiting several minutes between each attempt (Y page 168).
X If the auxiliary heating does not switch on, consult a qualified
specialist workshop.
Display messages
317
Display messages Ð Power steering mal‐ function See Own‐ er's Manual
Possible causes/consequences and M Solutions 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
nearest qualified specialist workshop.
Telephone No service
Your vehicle is outside the network provider's transmitter/ receiver range. X Wait until the mobile phone operational readiness symbol
appears in the multifunction display.
¥ Top up washer fluid
The washer fluid level in the washer fluid reservoir has dropped below the minimum. X Top up the washer fluid (Y page 369).
Key Display messages  Key does not belong to vehicle  Replace key  Change key batter‐ ies
Possible causes/consequences and M Solutions You have put the wrong key in the ignition lock. X Use the correct key.
The key 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 92).
318 Display messages
Display messages  Key not detected (red display message)
 Key not detected (white display mes- sage)
 Key still in vehi‐ cle  Remove starting button, then insert key
 Close doors to lock vehicle
Possible causes/consequences and M Solutions 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 199). 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 199). X Operate the vehicle with the key in the ignition lock if necessary. The KEYLESS-GO key cannot be detected at present. X Change the location of the key with the KEYLESS-GO functions
in the vehicle.
If the KEYLESS-GO key is still not detected: 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 is not continually detected. KEYLESS-GO is temporarily malfunctioning or is defective. A warn- ing tone also sounds. X Insert the key 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.
Warning and indicator lamps in the instrument cluster
319
Warning and indicator lamps in the instrument cluster Safety Seat belts
Problem
ü Only for certain coun- tries: the red seat belt warning lamp lights up for six seconds after the engine starts.
ü Only for certain coun- tries: the red seat belt warning lamp lights up after the engine starts. In addition, a warning tone sounds for up to six seconds.
ü The red seat belt warn- ing lamp lights up after the engine starts, as soon as the driver's or the front-passenger door is closed.
ü The red seat belt warn- ing 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 52).
The driver's seat belt is not fastened. X Fasten your seat belt (Y page 52).
The warning tone ceases.
The driver or front passenger has not fastened their seat belt. X Fasten your seat belt (Y page 52).
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 driver or passenger has not fastened their seat belt. At the same time, the car is being driven faster than 25 km/h or has been briefly driven faster than 25 km/h. X Fasten your seat belt (Y page 52).
The warning lamp goes out and the intermittent warning tone ceases.
There are objects on the front-passenger seat. At the same time, you are driving faster than 25 km/h or have briefly driven faster than 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.
320 Warning and indicator lamps in the instrument cluster
Safety systems
Problem
The yellow brake sys- tem warning lamp lights up while the engine is running.
The red brake system warning lamp comes on while the vehicle is moving. A warning tone also sounds.
The red brake system warning lamp is lit while the engine is running. A warning tone also sounds.
Possible causes/consequences and M Solutions G WARNING The brake system is malfunctioning and the braking characteris- tics may be affected. There is a risk of an accident. X If the multifunction display shows a display message, please
observe this.
X Drive on carefully. X Visit a qualified specialist workshop. You are driving with the parking brake applied. X Release the parking brake.
The warning lamp goes out and the warning tone ceases.
G WARNING The brake boosting effect is malfunctioning and the braking char- acteristics may be affected. 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 199). X Consult a qualified specialist workshop. X Observe the additional display messages in the multifunction
display.
Warning and indicator lamps in the instrument cluster
321
Problem
The red brake system warning lamp is lit while the engine is running. A warning tone also sounds.
The yellow ABS warning lamp is lit while the engine is running.
Possible causes/consequences and M Solutions There is insufficient brake fluid in the brake fluid reservoir. 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 199). X Do not top up the brake fluid. Topping up will not rectify the
fault.
X Consult a qualified specialist workshop. X Observe the additional display messages in the multifunction
display.
ABS (Anti-lock Brake System) has been deactivated due to a fault. Therefore, BAS (Brake Assist), BAS PLUS, COLLISION PREVEN- TION ASSIST, ESP® (Electronic Stability Program), PRE-SAFE®, PRE-SAFE® Brake, the HOLD function, hill start assist, ESP® trailer stabilisation and the adaptive brake lights, for example, are also deactivated. ATTENTION ASSIST 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 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 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 trans- mission, will be unavailable.
322 Warning and indicator lamps in the instrument cluster
Problem
The yellow ABS warning lamp is lit while the engine is running. A warning tone also sounds.
J÷å! 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.
Possible causes/consequences and M Solutions EBD is unavailable due to a malfunction. Therefore, ABS, BAS, BAS PLUS, COLLISION PREVENTION ASSIST, ESP®, PRE-SAFE®, PRE- SAFE® Brake, the HOLD function, hill start assist, ESP® trailer sta- bilisation and the adaptive brake lights, for example, are also unavailable. 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 Observe the additional display messages in the multifunction
display.
X Drive on carefully. X Visit a qualified specialist workshop.
ABS and ESP® are unavailable due to a fault. Therefore, BAS, BAS PLUS, COLLISION PREVENTION ASSIST, EBD, PRE-SAFE®, PRE- SAFE® Brake, the HOLD function, hill start assist, ESP® trailer sta- bilisation and the adaptive brake lights, for example, are not avail- able either. 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 Observe the additional display messages in the multifunction
display.
X Drive on carefully. X Visit a qualified specialist workshop.
Warning and indicator lamps in the instrument cluster
323
Problem
÷ The yellow ESP® warn- ing lamp flashes while the vehicle is in motion.
å The yellow ESP® OFF warning lamp is lit while the engine is running.
AMG vehicles only: The yellow SPORT han- dling mode warning lamp is lit while the engine is running.
Possible causes/consequences and M Solutions 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 Only depress the accelerator pedal as far as necessary when
pulling away.
X Accelerate more gently 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 77).
ESP® is deactivated. G WARNING If ESP® is deactivated, ESP® is unable to stabilise the vehicle. There is an increased danger of skidding and risk of an accident. X Reactivate ESP®.
For exceptions; see: (Y page 77).
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.
SPORT handling mode is activated. G WARNING When SPORT handling mode is switched on, ESP® is unable to stabilise the vehicle. There is an increased danger of skidding and risk of an accident. X Only switch to SPORT handling mode in accordance with the conditions written in the "Activating/deactivating SPORT han- dling mode" section (Y page 79).
324 Warning and indicator lamps in the instrument cluster
Problem
÷å The yellow ESP® and ESP® OFF warning lamps are lit while the engine is running.
The red SRS warning lamp is lit while the engine is running.
Possible causes/consequences and M Solutions ESP®, BAS, BAS PLUS, COLLISION PREVENTION ASSIST, PRE- SAFE®, PRE-SAFE® Brake, the HOLD function, hill start assist, ESP® trailer stabilisation and the adaptive brake lights are not available due to a malfunction. 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 Observe the additional display messages in the multifunction
display.
X Drive on carefully. X Visit a qualified specialist workshop. There is a malfunction in the SRS (Supplemental Restraint Sys- tem). 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 Drive on carefully. X Have SRS checked at a qualified specialist workshop immedi-
ately.
For further information about the Supplemental Restraint System; see (Y page 43).
Warning and indicator lamps in the instrument cluster
325
