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tion Consult work‐ shoporFront right malfunction Con‐ sult workshop
Rear left malfunc‐ tion Consult work‐ shoporRear right malfunction Con‐ sult workshop
Possible causes/consequences and M Solutions 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. For further information about the Supplemental Restraint System, see (Y page 39). 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. 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.234 Display messages
Display messages Rear centre mal‐ function 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 centre. 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:
Possible causes/consequences and M Solutions The left or right-hand dipped-beam headlamp is faulty. X Visit a qualified specialist workshop.
This display message will only appear if all LEDs have failed. Display messages Left dipped beam or Right dipped beam Trailer left tail lamp or Trailer right tail lamp Trailer left indi‐ cator or Trailer right indicator
The left or right-hand trailer tail lamp is faulty. X Check whether you are permitted to replace the bulb yourself. or X Visit a qualified specialist workshop.
The left or right-hand trailer turn signal lamp is faulty. X Check whether you are permitted to replace the bulb yourself. or X Visit a qualified specialist workshop.
Display messages 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 Third brake lamp Left brake lamporRight brake lamp Left main beamorRight main beam Number plate lamp
Display messages
235
Possible causes/consequences and M Solutions The trailer brake lamp is faulty. X Check whether you are permitted to replace the bulb yourself. or X Visit a qualified specialist workshop. 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 115).
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 115).
or X Visit a qualified specialist workshop. The turn signal in the left-hand or right-hand exterior mirror is faulty. X Visit a qualified specialist workshop.
The third brake lamp is faulty. X Visit a qualified specialist workshop.
The left or right-hand brake lamp is faulty. X Replace the bulb (Y page 114).
The left or right-hand high beam is faulty. X Visit a qualified specialist workshop.
There is a short circuit in the LEDs. The LEDs have been switched off. X Visit a qualified specialist workshop.
236 Display messages
Display messages Front foglamp, leftorFront fog‐ lamp, right Rear fog lamp
Front left parking lamp or Front right parking lamp
Reversing light Left tail lamporRight tail lamp
Left daytime driv‐ ing lamp or Right daytime driving lamp Malfunction See Owner's Manual AUTO lights inoper‐ ative
Possible causes/consequences and M Solutions The left-hand or right-hand front foglamp is faulty. X Replace the bulb (Y page 114).
The rear foglamp is faulty. X Check whether you are permitted to replace the bulb yourself
(Y page 115).
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 115).
or X Visit a qualified specialist workshop.
The reversing lamp is faulty. X Replace the bulb (Y page 114).
The left or right-hand tail lamp is faulty. X Check whether you are permitted to replace the bulb yourself
(Y page 115).
or X Visit a qualified specialist workshop.
The left or right-hand daytime driving lamp is defective. X Visit a qualified specialist workshop.
The exterior lighting is faulty. X Visit a qualified specialist workshop.
The light sensor is faulty. X Visit a qualified specialist workshop.
Display messages
237
Display messages Remove key Switch off lights
Engine Display messages Top up coolant See Owner's Manual
Possible causes/consequences and M Solutions You have left the key in the ignition lock. X Remove the key from the ignition lock.
The lights are still switched on when you leave the vehicle. A warning tone also sounds. X Turn the light switch to Ã.
Possible causes/consequences and M Solutions The coolant level is too low. X Top up the coolant, observing the warning notes before doing
so (Y page 289).
X Have the coolant system checked at a qualified specialist work-
shop if the coolant needs topping up more often than usual.
? 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.
238 Display messages
Display messages Coolant Stop vehi‐ cle Switch 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 163). X Leave the vehicle and keep a safe distance from the vehicle 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 poly-V-belt may have torn. X Stop the vehicle immediately, paying attention to road and traf-
fic conditions, and switch off the engine.
X Check the poly-V-belt. If the poly-V-belt is torn: ! Do not continue driving. The engine could otherwise overheat. X Consult a qualified specialist workshop. If the poly-V-belt is OK: X Wait until the display message disappears before restarting the
engine. The engine may otherwise be damaged. X Pay attention to the coolant temperature display. X Visit a qualified specialist workshop.
Display messages
239
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 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
Engine oil level Stop vehicle Turn engine off
Add 1 litre engine oil when next refu‐ elling
Cannot measure engine oil level
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 287).
X If necessary, top up the engine oil (Y page 289). X Have the engine checked at a qualified specialist workshop if
the engine oil needs topping up more often than usual.
The engine oil level is too low. There is a risk of engine damage. X Stop the vehicle immediately, paying attention to road and traf-
fic conditions, and switch off the engine.
X Top up the engine oil (Y page 289) and check the oil level
(Y page 287).
AMG vehicles: the engine oil level is too low. X Check the oil level when next refuelling, at the latest
(Y page 287).
X If necessary, top up the engine oil (Y page 289). X Have the engine checked at a qualified specialist workshop if
the engine oil needs topping up more often than usual.
The measuring system is malfunctioning. X Visit a qualified specialist workshop.
240 Display messages
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 when the fuel level drops into the reserve range. X Refuel at the nearest filling station.
C There is only a very small amount of 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.
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.
or X Refill AdBlue® yourself as soon as possible (Y page 160).
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.
or X Refill AdBlue® yourself immediately (Y page 160). The AdBlue® tank is empty. A warning tone also sounds. You can no longer start the engine. X Consult a qualified specialist workshop immediately. or X Refill AdBlue® yourself immediately (Y page 160). The AdBlue® system is malfunctioning. A warning tone also sounds. X Visit a qualified specialist workshop.
¸ Replace air cleaner
Clean the fuel fil‐ ter Ø Refill AdBlue See Owner's Manual
Ø Refill AdBlue No start in .. km
Ø Refill AdBlue Eng. start not possible
Ø Check AdBlue See Owner's Manual
Display messages Ø Eng. start not pos‐ sible in ... km Ø Engine start not possible
Driving systems Display messages TC shift condi‐ tions not fulfilled Apply the brake/ parking brake
TC malfunction Visit workshopTo park, apply the parking brake
TC shift procedure cancelled Reactivate
TC shift condition not fulfilled Drive at max. 40 km/h
Display messages
241
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 The parking brake has not been applied and the brake pedal has not been depressed. The transfer case has cancelled the gear change process and is in Neutral. There is no connection between the engine and the drive wheels. X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Depress the brake pedal and apply the parking brake. X Shift the automatic transmission to neutral position N. X Make sure all conditions for changing gears are met
(Y page 202).
X Repeat the gearshift process. There is a malfunction in the transfer case. X Do not shift the transfer case. X When parking, secure the vehicle against rolling away
(Y page 163).
X Have the vehicle checked at a qualified specialist workshop. The transfer case has not performed the gear change process. X Repeat the gearshift process. X Make sure all conditions for changing gears are met
(Y page 202).
You have exceeded the maximum speed for the gearshift process. X Drive more slowly. X Repeat the gearshift process.
242 Display messages
Display messages TC shift condition not fulfilled Engage NEUTRAL gear TC shift condition not fulfilled Drive at max. 70 km/h LOW RANGE On HIGH RANGE On Differential locks available only in LOW RANGE
TC-NEUTRAL On
Preselected dif‐ ferential lock ESP not available
Differential locks active ABS and ESP unavailable
Possible causes/consequences and M Solutions You have not met one or more shift conditions. X Shift the automatic transmission to neutral position N. X Repeat the gearshift process. You have exceeded the maximum speed for the gearshift process. X Drive more slowly. X Repeat the gearshift process.
The transfer case is in the LOW RANGE off-road position.
The transfer case is in the HIGH RANGE on-road position.
The LOW RANGE button has been pressed. The transfer case is in the LOW RANGE off-road driving position and a differential lock is engaged. X Disengage the differential locks (Y page 204). X Repeat the gearshift process. The transfer case is in the Neutral neutral position. A warning tone will also sound when the driver's door is opened and the brake pedal is not depressed. X Close the driver's door. X Secure the vehicle against rolling away (Y page 163). X Shift the transfer case according to driving conditions
(Y page 201).
A differential lock has been engaged. The differential gear has not yet locked the respective differential. The activation indicator lamp (yellow) (Y page 204) of the switch lights up. ESP is unavailable. ABS is still available. A differential lock was engaged and the differential gear has locked the respective differential. The activation indicator lamp (yellow) and function indicator lamp (red) (Y page 204) on the switch light up. ABS and ESP are unavailable.
Display messages
243
Display messages Blind Spot Assist currently unavail‐ able See Owner's Manualor Active Blind Spot Assist currently unavailable See Owner's Manual
Blind Spot Assist inoperativeor Active Blind Spot Assist inoperative DISTRONIC PLUS Off DISTRONIC PLUS available again
Possible causes/consequences and M Solutions Blind Spot Assist or Active Blind Spot Assist is temporarily inop- erative. Possible causes: Ryou have established the electrical connection between the
trailer and your vehicle.
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. X When towing a trailer, confirm the display message with a. If you are driving without a trailer and 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 Engage the parking brake. X Clean the sensors (Y page 294). 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 faulty. The yellow 9 indicator lamps also light up in the exterior mir- rors. X Visit a qualified specialist workshop. DISTRONIC PLUS has been deactivated (Y page 182). If it was deactivated automatically, a warning tone also sounds.
DISTRONIC PLUS is operational again after having been tempo- rarily unavailable. You can now reactivate DISTRONIC PLUS (Y page 182).
244 Display messages
Display messages DISTRONIC PLUS currently unavail‐ able See Owner's Manual
Possible causes/consequences and M Solutions DISTRONIC is deactivated and temporarily inoperative. Possible causes: Rthe DISTRONIC PLUS cover in the radiator grille is dirty. Rthe function 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 sta- tions or other sources of electromagnetic radiation.
Rthe system is outside the operating temperature range. Rthe transfer case is in the LOW RANGE transmission position. Rthe vehicle is on an uphill or downhill gradient of greater than
22%-25%.
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 Engage the parking brake. X Clean the DISTRONIC PLUS cover in the radiator trim and the
bumper (Y page 294).
X Restart the engine. If the system detects that the sensors are fully operational, the display message disappears. DISTRONIC is operational again. DISTRONIC PLUS is faulty. BAS might 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 182).
DISTRONIC PLUS and SPEEDTRONIC are faulty. A warning tone also sounds. X Visit a qualified specialist workshop.
DISTRONIC PLUS inoperative
DISTRONIC PLUS suspended
DISTRONIC PLUS --- km/h
DISTRONIC PLUS and SPEEDTRONIC inoperative
Display messages
245
Display messages Cr. control and SPEEDTRONIC inop‐ erative Limit --- km/h Cruise control --- km/h
120 km/h Maximum speed exceeded
Tyres Display messages Tyre pressure dis‐ played only after driving for a few minutes Tyre pressure mon‐ itor inoperative Tyre press. moni‐ tor inoperative No wheel sensors
Possible causes/consequences and M Solutions SPEEDTRONIC and cruise control are malfunctioning. 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 173).
Only for certain countries: the maximum speed has been excee- ded. In addition, the multifunction display shows 120 km/h. X Drive more slowly.
Possible causes/consequences and M Solutions The tyre pressure monitor is measuring the tyre pressure. X Drive on.
The tyre pressures appear in the multifunction display after you have been driving for a few minutes.
The tyre pressure monitor is faulty. X Visit a qualified specialist 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.
246 Display messages
Display messages Check tyres
Caution, tyre defect
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 163). X If there is a flat tyre, inspect the tyres (Y page 305). X Check the tyre pressure (Y page 323). 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 163). X If there is a flat tyre, inspect the tyres (Y page 305).
Display messages Please correct tyre pressure
Wheel sensor(s) missing
Tyre pressure mon‐ itor not currently available
Tyre pressure Cau‐ tion Tyre malfunc‐ tion
Display messages
247
Possible causes/consequences and M Solutions 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 323).
X If necessary, correct the tyre pressure. X Restart the tyre pressure monitor (Y page 324). 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.
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.
The tyre pressure in one or more tyres has dropped suddenly. A warning tone also sounds. 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 163). X If there is a flat tyre, inspect the tyres (Y page 305).
248 Display messages
Display messages Tyre pressure Check tyre(s)
Possible causes/consequences and M Solutions The tyre pressure in one or more tyres has dropped significantly. 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.
Tyre pressure Please correct
Vehicle Display messages To start the engine, shift to either P or N Auxiliary battery malfunction
X Secure the vehicle against rolling away (Y page 163). X If there is a flat tyre, inspect the tyres (Y page 305). X Check the tyre pressure (Y page 323). X If necessary, correct the tyre pressure. 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 323).
X If necessary, correct the tyre pressure.
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 parking brake.
Display messages
249
Display messages A G-Class long-wheelbase version: the tailgate is open.
Possible causes/consequences and M Solutions
G-Class Cabriolet: the tailgate is open. G WARNING When the engine is running, exhaust gases can enter the vehicle interior if the tailgate (G-Class long-wheelbase version and G-Class Cabriolet) is open. There is a risk of poisoning. X Close the tailgate (G-Class long-wheelbase version or G-Class
Cabriolet).
? 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 163). X Close the bonnet.
C At least one door is open.
A warning tone also sounds. X Close all doors. G WARNING The driver's or front-passenger seat backrest is not engaged. X Push the backrest back until it engages.
Rear left seat backrest not locked or Front right seat back‐ rest not locked
250 Display messages
Display messages Power steering mal‐ function See Own‐ er's Manual
inoperative Bat‐ tery low
inoperative Refuel
inoperative See Owner'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.
You have attempted to switch on the auxiliary heating or to acti- vate a departure time using the on-board computer after operating the auxiliary heating twice. X Let the engine run for 10 seconds.
The auxiliary heating is operational again.
The on-board voltage is too low. The auxiliary heating has switched itself off or cannot be switched on (Y page 126). 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 126). 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 126).
X If the auxiliary heating does not switch on, consult a qualified
specialist workshop.
Warning and indicator lamps in the instrument cluster
251
Display messages Telephone No service
Possible causes/consequences and M Solutions 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 290).
Key Display messages  Key does not belong to vehicle  Replace key
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.
6 SRS (Y page 259) ; Engine diagnostics
(Y page 259)
8 Reserve fuel (Y page 260) ? Coolant (Y page 260) · Distance warning signal
% Diesel engine: preglow
h Tyre pressure monitor
(Y page 262)
(Y page 144)
(Y page 263)
Warning and indicator lamps in the instrument cluster Warning and indicator lamps over- view L Dipped-beam headlamps
(Y page 105)
T Side lamps (Y page 105) #! Turn signals (Y page 108) K Main-beam headlamps
(Y page 109)
N Foglamps (Y page 106) R Rear fog lamp (Y page 107) ü Seat belts (Y page 252) J Brakes (yellow) (Y page 253) J Brakes (red) (Y page 253) ! ABS (Y page 254) ÷ ESP®(Y page 256) å ESP® OFF (Y page 256)
252 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 44).
The driver's seat belt is not fastened. X Fasten your seat belt (Y page 44).
The warning tone ceases.
The driver or front passenger has not fastened their seat belt. X Fasten your seat belt (Y page 44).
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 front passenger has not fastened their seat belt. At the same time, you are driving faster than 25 km/h or have briefly driven faster than 25 km/h. X Fasten your seat belt (Y page 44).
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.
Warning and indicator lamps in the instrument cluster
253
Safety systems
Problem
The red brake system warning lamp comes on while the engine is run- ning.
The yellow brake sys- tem warning lamp lights up while the engine is running. A warning tone also sounds.
The yellow brake sys- tem warning lamp lights up 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. 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 163). X Consult a qualified specialist workshop. X Observe the additional display messages in the multifunction
display.
There is insufficient brake fluid in the 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 163). 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.
254 Warning and indicator lamps in the instrument cluster
Problem
The red ABS warning lamp is lit while the engine is running.
Possible causes/consequences and M Solutions ABS (Anti-lock Brake System) has been deactivated due to a fault. BAS (Brake Assist), ESP® (Electronic Stability Program), the HOLD function, hill start assist, the adaptive brake lights and ESP® trailer stabilisation, for example, are therefore also 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 in an emergency braking situation can increase. If ESP® is not operational, ESP® is unable to stabilise the vehicle. The danger of skidding and having an accident increases. 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 not be available.
Warning and indicator lamps in the instrument cluster
255
Problem
The red ABS warning lamp is lit while the engine is running.
Possible causes/consequences and M Solutions ABS is temporarily unavailable. BAS, ESP®, EBD (electronic brake force distribution), the HOLD function, hill start assist, ESP® trailer stabilisation and the adaptive brake lights, for example, are there- fore also 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 front and rear wheels could therefore lock if you brake hard, for example. The steerability and braking characteristics may be severely affec- ted. The braking distance in an emergency braking situation can increase. If ESP® is not operational, ESP® is unable to stabilise the vehicle. There is a 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. 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.
256 Warning and indicator lamps in the instrument cluster
Problem
The red ABS warning lamp is lit while the engine is running. A warning tone also sounds.
The red ABS warning lamp is lit while the engine is running.
J÷å! The yellow brake warn- ing 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 faulty. Therefore, ABS, BAS, ESP®, the HOLD function, hill start assist, the adaptive brake lights and ESP® trailer stabilisation are also not available, for example. 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 affec- ted. The braking distance in an emergency braking situation can increase. If ESP® is not operational, ESP® is unable to stabilise the vehicle. The danger of skidding and having an accident increases. X Observe the additional display messages in the multifunction
display.
X Drive on carefully. X Visit a qualified specialist workshop. You have engaged the differential locks. ABS is deactivated. X Disengage the differential locks. Subsequently ABS is reactivated.
ABS and ESP® are malfunctioning. Therefore, BAS, EBD, the HOLD function, hill start assist, the adaptive brake lights and ESP® trailer stabilisation, for example, are also not available. 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 affec- ted. The braking distance in an emergency braking situation can increase. If ESP® is not operational, ESP® is unable to stabilise the vehicle. The danger of skidding and having an accident increases. 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
257
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.
÷å The yellow ESP® and ESP® OFF warning lamps are 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®. Exceptions: (Y page 62)
ESP® is deactivated. G WARNING If ESP® is switched off, ESP® is unable to stabilise the vehicle. The danger of skidding and having an accident increases. X Reactivate ESP®.
Exceptions: (Y page 62)
X Adapt your driving style to suit the road and weather conditions. If ESP® cannot be activated: X Have ESP® checked at a qualified specialist workshop.
ESP®, BAS, the HOLD function, hill start assist, the adaptive brake lights and ESP® trailer stabilisation are not available due to a mal- function. 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 stabilise the vehicle. The danger of skidding and having an accident increases. X Observe the additional display messages in the multifunction
display.
X Drive on carefully. X Visit a qualified specialist workshop.
258 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.
Possible causes/consequences and M Solutions ESP®, BAS, the HOLD function, hill start assist and ESP® trailer stabilisation are temporarily unavailable. BAS and the adaptive brake lights may also have failed. 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 stabilise the vehicle. The danger of skidding and having an accident increases. X Carefully drive on a suitable stretch of road making slight steer-
ing movements at a speed above 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.
å The yellow ESP® OFF warning lamp is lit while the engine is running.
You have engaged the differential locks. ABS, ESP®, 4ETS and BAS have been deactivated. X Disengage the differential locks.
ESP®, 4ETS and BAS are subsequently reactivated.
X Observe the additional display messages in the multifunction
display.
Warning and indicator lamps in the instrument cluster
259
