Display messages
Possible causes/consequences and
M
MSolutions j
Parking lock mal‐ Parking lock mal‐
funct. Apply park‐ funct. Apply park‐
ing brake ing brake Transmission position
Pcannot be selected.
X Make sure that the electric parking brake is applied.
X Safeguard the vehicle against rolling away before you leave it
(Y page 268).
X Consult a qualified specialist workshop. d
Transmission oil Transmission oil
cooling Malfunction cooling Malfunction The transmission coolant pump is faulty. The transmission may over-
heat.
X In the on-board computer, select the AMG
AMG menu and check the
transmission oil temperature (Y page 167).
X Avoid excessive loading, e.g. due to dynamic driving.
X If the transmission oil temperature is less than 120 †, you can
continue driving to the nearest qualified specialist workshop. d
Trans. oil overhea‐ Trans. oil overhea‐
ted Drive on with ted Drive on with
care care The transmission oil has overheated.
Manual mode
Mand temporary manual drive program are no longer
available. Only the Comfort setting is available for the transmission.
The engine output is reduced according to the degree of overheating.
X Allow the transmission oil to cool by adopting a defensive driving
style. Electronic rear Electronic rear
axle differential axle differential
lock inoperative lock inoperative The electronic rear axle differential lock is inoperative.
X Consult a qualified specialist workshop. Electronic rear
Electronic rear
axle differential axle differential
lock currently lock currently
unavailable unavailable The electronic rear axle differential lock motor has overheated.
X Allow the electronic rear axle differential lock to cool by adopting a
defensive driving style. N The tailgate is open.
G WARNING
When the engine is running, exhaust gases can enter the vehicle inte- rior if the tailgate is open.
There is a risk of poisoning.
X Close the tailgate. 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 Stop the vehicle safely as soon as possible, paying attention to road
and traffic conditions.
X Secure the vehicle against rolling away (Y page 119).
X Close the bonnet. 192
Display
messagesOn-board computer and displays
Display messages
Possible causes/consequences and
M
MSolutions C At least one door is open. A warning tone also sounds.
X Close all doors. Rear spoiler con‐
Rear spoiler con‐
trol system inoper‐ trol system inoper‐
ative ative The rear spoiler cannot be fully retracted and may extend again.
If the retraction of the rear spoiler is blocked, e.g. by ice:
X Make sure that the cause of the block is eliminated.
X Switch off the engine and lock the vehicle.
X Start the vehicle after waiting a few minutes.
The rear spoiler returns to the original position.
If this problem persists or the cause cannot be identified:
X Consult a qualified specialist workshop. Rear Rear
spoiler
spoiler inoper‐
inoper‐
ative Limit 125 mph
ative Limit 125 mph The rear spoiler cannot be fully extended and extends as far as pos-
sible.
The speed of the vehicle is limited to 200 km/h.
If the extension/retraction of the rear spoiler is blocked, e.g. by ice:
X Make sure that the cause of the block is eliminated.
X Switch off the engine and lock the vehicle.
X Start the vehicle after waiting a few minutes.
The rear spoiler returns to the original position.
If this problem persists or the cause cannot be identified: X Consult a qualified specialist workshop. Ð
Power steering mal‐ Power steering mal‐
function See Own‐ function See Own‐
er's Manual er's Manual 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 steering 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 Telephone
No
Noservice
service Your vehicle is outside the mobile phone network provider's trans-
mitter/receiver range.
X Wait until the mobile phone operational readiness symbol appears
in the multifunction display. ¥
Top up washer fluid 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 236). Display
messages
193On-board computer and displays Z
Key
Display messages
Possible causes/consequences and
M
MSolutions Â
Key Key
does
does not
notbelong
belong
to vehicle
to vehicle You have put the wrong key in the ignition lock.
X Use the correct key. Â
Replace key Replace key The key needs to be replaced.
X Consult a qualified specialist workshop. Â
Change Change
key
keybatteries
batteries The key battery is discharged.
X Replace the batteries (Y page 66).Â
Key not detected Key not detected
(white display message) The key is currently undetected.
X Change the location of the key in the vehicle.
If the key still cannot be detected:
X Insert the key into the ignition lock and turn it to the desired posi-
tion. Â
Key not detected Key not detected
(red display message) The key is not in the vehicle.
A warning tone also sounds.
If the engine is switched off, you can no longer lock the vehicle cen-
trally or start the engine.
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Safeguard the vehicle against rolling away (Y page 119).
X Locate the key.
X Press aon the steering wheel to confirm the display message. Because there is interference from a strong source of radio waves, the
key is not detected whilst the engine is running.
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 Safeguard the vehicle against rolling away (Y page 119).
X Insert the key into the ignition lock and bring into key mode. Â
Insert key Insert key The key is continually undetected.
The key detection function has a temporary malfunction or is faulty. A
warning tone also sounds.
X Insert the key into the ignition lock and turn it to the desired posi-
tion.
X Consult a qualified specialist workshop. 194
Display
messagesOn-board computer and displays
Warning and indicator lamps in the instrument cluster
General notes
Some systems carry out a self-diagnosis when the ignition is switched on. A number of warning and
indicator lamps might temporarily light up or flash during this. This behaviour is non-critical. These warning and indicator lamps indicate a malfunction only if they light up or flash after the engine is started or during a journey. Safety
Seat belts Warning/
indicator
lamp
N N
Signal type
Possible causes/consequences and M
MSolutions ü
N
Only for certain countries: the red seat belt warning lamp lights up for 6 seconds
after the engine starts.
The seat belt warning lamp reminds the driver and front passenger to fasten their
seat belts.
X Fasten your seat belt (Y page 38).ü
N
Only for certain countries: the red seat belt warning lamp lights up after the
engine starts. In addition, a warning tone sounds for up to 6 seconds.
The driver's seat belt is not fastened.
X Fasten your seat belt (Y page 38).
The warning tone ceases. ü
N
The red seat belt warning lamp lights up after the engine starts, as soon as the
driver's or the front-passenger door is closed.
The driver or passenger has not fastened their seat belt.
X Fasten your seat belt (Y page 38).
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. ü
N
The red seat belt warning lamp flashes and an intermittent audible warning
sounds.
The driver or 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 38).
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
195On-board computer and displays Z
Safety systems
Warning/
indicator
lamp
N N
Signal type
Possible causes/consequences and M
MSolutions J
N
The red brake system warning lamp lights up while the engine is running.
A warning tone also sounds.
G WARNING
The brake boosting effect is malfunctioning and the braking characteristics may be
affected.
There is a risk of an accident.
X Stop the vehicle safely as soon as possible, paying attention to road and traffic
conditions. Do not continue driving.
X Secure the vehicle against rolling away (Y page 119).
X Consult a qualified specialist workshop immediately.
X Observe the additional display messages on the multifunction display. J
N
The red brake system warning lamp is lit while the engine is running.
A warning tone also sounds.
There is insufficient brake fluid in the brake fluid reservoir.
G WARNING
Braking efficiency may be impaired.
There is a risk of an accident.
X Stop the vehicle safely as soon as possible, paying attention to road and traffic
conditions. Do not continue driving.
X Secure the vehicle against rolling away (Y page 119).
X Do not top up the brake fluid. Topping up will not correct the fault.
X Consult a qualified specialist workshop.
X Observe the additional display messages on the multifunction display. J
N
The yellow brake system warning lamp is lit while the engine is running or the
ECO start/stop function is switched on.
G WARNING
The brake system is malfunctioning and the braking characteristics may be affec- ted.
There is a risk of an accident.
X If the multifunction display shows a display message, please observe this.
X Drive on carefully.
X Consult a qualified specialist workshop immediately. 196
Warning and indicator lamps in the instrument clusterOn-board computer and displays
Warning/
indicator
lamp
N N
Signal type
Possible causes/consequences and M
MSolutions !
N
The yellow ABS warning lamp is lit while the engine is running.
The ABS (Anti-lock Braking System) is malfunctioning.
An additional warning tone indicates that EBD (electronic brake force distribution) is malfunctioning.
Other driving and driving safety systems may also be malfunctioning.
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 exam-
ple.
The steerability and braking characteristics may be severely affected. 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 risk of skidding and/or accident.
X Observe the additional display messages on the multifunction display.
X Drive on carefully.
X Consult a qualified specialist workshop immediately.
If the ABS control unit is faulty, there is also a possibility that other systems, such as the navigation system or the automatic transmission, will be unavailable. J÷
å!
N
The red brake system warning lamp and the yellow ESP ®
and ABS warning lamps
are lit while the engine is running.
ABS and ESP ®
are malfunctioning.
Other driving and driving safety systems may also be malfunctioning.
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 exam-
ple.
The steerability and braking characteristics may be severely affected. 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 risk of skidding and/or accident.
X Observe the additional display messages on the multifunction display.
X Drive on carefully.
X Consult a qualified specialist workshop immediately. Warning and indicator lamps in the instrument cluster
197On-board computer and displays Z
Warning/
indicator
lamp
N N
Signal type
Possible causes/consequences and M
M Solutions ÷
N
The yellow ESP ®
warning lamp flashes while the vehicle is in motion.
ESP ®
or traction control has intervened due to a risk of skidding or because at least
one wheel has started to spin.
Cruise control or DISTRONIC PLUS is deactivated.
X Depress the accelerator pedal only 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 ®
.
In rare cases (Y page 58) it may be better to deactivate ESP ®
.
Observe the important safety notes on ESP ®
(Y page 58). ÷
N
The yellow ESP ®
warning lamp is lit while the engine is running.
ESP ®
is malfunctioning.
Other driving and driving safety systems may also be malfunctioning.
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 risk of skidding and/or accident.
X Observe the additional display messages on the multifunction display.
X Drive on carefully.
X Consult a qualified specialist workshop immediately. å
N
The yellow ESP ®
OFF warning lamp is lit while the engine is running or the ECO
start/stop function is switched on.
ESP ®
is deactivated.
G WARNING
If ESP ®
is deactivated, ESP ®
is unable to stabilise the vehicle.
There is an increased risk of skidding and/or accident.
X Reactivate ESP ®
.
In rare cases (Y page 58) it may be better to deactivate ESP ®
.
Observe the important safety notes on ESP ®
(Y page 58).
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. 198
Warning and indicator lamps in the instrument clusterOn-board computer and displays
Warning/
indicator
lamp
N N
Signal type
Possible causes/consequences and M
MSolutions M
N
The yellow SPORT handling mode warning lamp is lit while the engine is running.
SPORT handling mode is activated.
G WARNING
When SPORT handling mode is activated, ESP ®
is unable to stabilise the vehicle.
There is an increased risk of skidding and/or accident.
X Only switch to SPORT handling mode in accordance with the conditions descri-
bed in the "Activating/deactivating ESP ®
" section (Y page 58). !
N
The red indicator lamp for the electric parking brake flashes or is lit and/or the
yellow warning lamp for the electric parking brake is lit.
X Observe the additional display messages on the multifunction display. 6
N
The red restraint system warning lamp is lit while the engine is running.
The restraint system is malfunctioning.
G WARNING
The airbags or belt tensioners may either be triggered unintentionally or, in the
event of an accident, may not be triggered.
This poses an increased risk of injury. X Observe the additional display messages on the multifunction display.
X Drive on carefully.
X Have the restraint system checked immediately at a qualified specialist work-
shop.
Further information about the restraint system (Y page 34).Warning and indicator lamps in the instrument cluster
199On-board computer and displays Z