Display messages
Possible causes/consequences and
M
MSolutions !
Turn on the igni‐ Turn on the igni‐
tion tion
to
torelease
release the
the
parking brake
parking brake The red
!indicator lamp lights up.
You attempted to release the electric parking brake while the ignition
was switched off.
X Key: turn the key to position 1in the ignition lock.
X KEYLESS-GO: switch on the ignition. !
Release parking Release parking
brake brake The red
!indicator lamp flashes and a warning tone sounds. A
condition for automatic release of the electric parking brake is not
fulfilled (Y page 192).
You are driving with the electric parking brake applied.
X Release the electric parking brake manually. The red
!indicator lamp flashes and a warning tone sounds.
You are making an emergency stop using the electric parking brake
(Y page 192). !
Parking brake See Parking brake See
Owner's Manual Owner's Manual The yellow
!warning lamp lights up.
The electric parking brake is malfunctioning.
To apply:
X Switch the ignition off.
X Press the electric parking brake lever for at least ten seconds.
X Shift the transmission to position P.
X Consult a qualified specialist workshop. The yellow
!warning lamp and the red !indicator lamp are lit.
The electric parking brake is malfunctioning.
To release:
X Switch off the ignition and turn it back on.
X Release the electric parking brake manually.
or X Release the electric parking brake automatically (Y page 192).
If the electric parking brake still cannot be released: X Do not drive on.
X Consult a qualified specialist workshop. 304
Display
messagesOn-board computer and displays
Display messages
Possible causes/consequences and
M
MSolutions The red
!indicator lamp flashes and the yellow !warning lamp
is lit.
The electric parking brake is malfunctioning.
To release:
X Switch off the ignition and turn it back on.
X Release the electric parking brake manually.
To apply: X Switch off the ignition and turn it back on.
X Apply the electric parking brake manually.
If the red !indicator lamp continues to flash:
X Do not drive on.
X Safeguard the vehicle against rolling away (Y page 414).
X Shift the transmission to position P.
X Turn the front wheels towards the kerb.
X Consult a qualified specialist workshop. The yellow
!warning lamp lights up. The red !indicator lamp
flashes for about ten seconds after the electric parking brake has been applied or released. It then goes out or remains lit.
The electric parking brake is malfunctioning.
X Switch off the ignition and turn it back on.
X Apply the electric parking brake.
If it is not possible to apply the electric parking brake:
X Shift the transmission to position P.
X Consult a qualified specialist workshop.
If it is not possible to release the electric parking brake:
X Release the electric parking brake automatically (Y page 192).
If the electric parking brake still cannot be released:
X Consult a qualified specialist workshop. The yellow
!warning lamp lights up. If you manually apply or
release the electric parking brake, the red !indicator lamp
flashes.
The electric parking brake is malfunctioning. It is not possible to apply
the electric parking brake manually.
X Shift the transmission to position P.
X Consult a qualified specialist workshop. Display
messages
305On-board computer and displays Z
Display messages
Possible causes/consequences and
M
MSolutions !
Parking brake inop‐ Parking brake inop‐
erative erative The yellow
!warning lamp lights up. The red !indicator lamp
flashes for about ten seconds after the electric parking brake has been applied or released. It then goes out or remains lit.
The electric parking brake is malfunctioning, e.g. because of over-
voltage or undervoltage.
X Rectify the cause of the overvoltage or undervoltage, e.g. by charg-
ing the battery or restarting the engine.
X Apply or release the electric parking brake.
If the electric parking brake still cannot be applied or released: X Switch off the ignition and turn it back on.
X Apply or release the electric parking brake.
If the electric parking brake still cannot be released: X Consult a qualified specialist workshop.
If it is still not possible to apply the electric parking brake:
X Consult a qualified specialist workshop. The yellow
!warning lamp lights up and the red !indicator
lamp flashes.
It is not possible to apply the electric parking brake manually.
X Shift the transmission to position P.
X Consult a qualified specialist workshop. J
Check brake fluid Check brake fluid
level level There is insufficient brake fluid in the brake fluid reservoir. In addition,
the J warning lamp in the instrument cluster lights up and a warn-
ing tone sounds.
G WARNING
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 Safeguard the vehicle against rolling away (Y page 191).
X Consult a qualified specialist workshop.
X Do not top up the brake fluid. This does not correct the fault. #
Check Check
brake
brakepad
padwear
wear The brake pads/linings have reached their wear limit.
X Consult a qualified specialist workshop. G
Inoperative
Inoperative One or more main features of the Mercedes-Benz Contact system are
malfunctioning.
X Consult a qualified specialist workshop. 306
Display
messagesOn-board computer and displays
Display messages
Possible causes/consequences and
M
MSolutions b
Third brake lamp Third brake lamp The third brake lamp is faulty.
X Consult a qualified specialist workshop. b
Left brake lamp Left brake lamp
or
Right brake lamp
Right brake lamp The left or right-hand brake lamp is faulty.
X Consult a qualified specialist workshop. b
Left-hand Left-hand
tail
taillamp/
lamp/
brake lamp
brake lamp orRight-
Right-
hand tail lamp/
hand tail lamp/
brake lamp brake lamp The left or right-hand tail lamp/brake lamp is faulty.
X Consult a qualified specialist workshop. b
Left main beam Left main beam
or
Right main beam Right main beam The left or right-hand main-beam headlamp is faulty.
X Halogen headlamp: replace the bulb (Ypage 128).
X LED headlamps: consult a qualified specialist workshop. b
Number plate lamp Number plate lamp The left or right-hand licence plate lamp is faulty.
X Consult a qualified specialist workshop. b
Rear foglamp Rear foglamp The rear foglamp is faulty.
X Consult a qualified specialist workshop. b
Front left parking Front left parking
lamp lamp
orFront right
Front right
parking lamp
parking lamp The front left or front right parking lamp is faulty.
X Consult a qualified specialist workshop. b
Reversing light Reversing light The reversing lamp is faulty.
X Consult a qualified specialist workshop. b
Left tail lamp Left tail lamp
or
Right tail lamp
Right tail lamp The left or right-hand tail lamp is faulty.
or
The rear left-hand or rear right-hand side marker lamp is faulty.
X Consult a qualified specialist workshop. b
Left daytime driv‐ Left daytime driv‐
ing lamp ing lamp
orRight
Right
daytime
daytime driving
drivinglamp
lamp The left or right-hand daytime driving lamp is faulty.
X Consult a qualified specialist workshop. b
Intell. Light Sys‐ Intell. Light Sys‐
tem inoperative tem inoperative The Intelligent Light System is faulty. The lights remain available with-
out the Intelligent Light System.
X Consult a qualified specialist workshop. 314
Display
messagesOn-board computer and displays
Display messages
Possible causes/consequences and
M
MSolutions ý
Different. lock Different. lock
sys. Malfunction sys. Malfunction The differential lock is faulty.
X Do not drive at speeds above 80 km/h.
X Consult a qualified specialist workshop. ý
Different. locking Different. locking
sys. cooling down sys. cooling down
Please wait Please wait The differential lock is too hot and has been disengaged.
X Drive on carefully.
X Allow the differential lock to cool down.
The differential lock re-engages as soon as it has cooled down. LOW RANGE Stop LOW RANGE Stop
Apply parking brake Apply parking brake A gearshift process has been cancelled. LOW RANGE is in the neutral
position. 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 Apply the electric parking brake. Do not continue driving under any
circumstances.
X Repeat the gearshift process. LOW RANGE Malfunc‐
LOW RANGE Malfunc‐
tion tion
To
Topark,
park, apply
apply
parking brake
parking brake LOW RANGE is malfunctioning.
X Do not drive at speeds above 80 km/h.
X When parking, safeguard the vehicle against rolling away
(Y page 191).
X Consult a qualified specialist workshop. LOW RANGE max. LOW RANGE max.
speed 40 km/h speed 40 km/h You have exceeded the maximum speed for the gearshift process.
X Drive more slowly.
The gear change is made. LOW RANGE max. LOW RANGE max.
speed 70 km/h speed 70 km/h You have exceeded the maximum speed for the gearshift process.
X Drive more slowly.
The gear change is made. LOW RANGE Shift to LOW RANGE Shift to
position N briefly position N briefly You have reduced the vehicle speed, but the automatic transmission
is not in position N.
X Briefly shift the automatic transmission to position N.LOW RANGE Shifting
LOW RANGE Shifting
cancelled Please cancelled Please
reactivate reactivate The gearshift process has been cancelled.
X Repeat the gearshift process. Ã
Inoperative
Inoperative DSR (Downhill Speed Regulation) is deactivated due to a fault.
X Have DSR checked at a qualified specialist workshop. 324
Display
messagesOn-board computer and displays
Display messages
Possible causes/consequences and
M
MSolutions Active Parking Assist is unavailable or faulty.
X Switch off the ignition and restart the engine.
If Active Parking Assist continues to be unavailable (the jsymbol
does not appear in the multifunction display):
X Consult a qualified specialist workshop. Park Assist
Park Assist
switched off switched off The vehicle is parked. A warning tone also sounds.
The display message disappears automatically. DISTRONIC PLUS off
DISTRONIC PLUS off DISTRONIC PLUS has been deactivated.
If a warning tone also sounds, DISTRONIC PLUS has switched itself off.
(Y page 207) DISTRONIC PLUS DISTRONIC PLUS
available again available again DISTRONIC PLUS is operational again after having been temporarily
unavailable. You can now reactivate DISTRONIC PLUS (Y
page 207).DISTRONIC PLUS cur‐ DISTRONIC PLUS cur‐
rently unavailable rently unavailable
See Owner's Manual See Owner's Manual DISTRONIC PLUS is temporarily inoperative.
Steering Assist and Stop&Go Pilot are temporarily inoperative.
Possible causes:
R the function is impaired due to heavy rain or snow
R the radar sensor system is temporarily inoperative, e.g. due to elec-
tromagnetic radiation emitted by nearby TV or radio stations or
other sources of electromagnetic radiation
R the system is outside the operating temperature range
R the 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 PLUS is operational again.
If the display message does not disappear:
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Safeguard the vehicle against rolling away (Y page 191).
X Restart the engine. DISTRONIC DISTRONIC
PLUS
PLUSinop‐
inop‐
erative
erative DISTRONIC PLUS is faulty.
The following may have also failed:
R BAS PLUS with Cross-Traffic Assist
R PRE-SAFE ®
Brake
R Steering Assist and Stop&Go Pilot
A warning tone also sounds.
X Consult a qualified specialist workshop. DISTRONIC PLUS sus‐ DISTRONIC PLUS sus‐
pended pended 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. Display
messages
327On-board computer and displays Z
Display messages
Possible causes/consequences and
M
MSolutions Without changing
Without changing
gear, consult work‐ gear, consult work‐
shop shop You cannot change the transmission position due to a malfunction.
A warning tone also sounds.
If transmission position
Dis selected:
X Drive to a qualified specialist workshop without shifting the trans-
mission from position D.
If transmission position R,Nor Pis selected:
X Secure the vehicle against rolling away (Y page 191).
X Consult a qualified specialist workshop. Reversing Reversing
not
notposs.
poss.
Consult workshop
Consult workshop You cannot shift into the transmission position
Rdue to a malfunction.
The transmission positions P,N or Dcontinue to be available.
A warning tone also sounds.
X Consult a qualified specialist workshop. Transmission Mal‐
Transmission Mal‐
function Stop function Stop A malfunction has occurred in the mechanical transmission compo-
nents.
A warning tone also sounds. The transmission shifts automatically to position N.
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Shift the transmission to position P.
X Secure the vehicle against rolling away (Y page 191).
X Consult a qualified specialist workshop. Stop vehicle Leave Stop vehicle Leave
engine engine
running
running Wait
Wait
Transmission cool‐
Transmission cool‐
ing ing PLUG-IN HYBRID vehicles:
The transmission has overheated. Pulling away can be temporarily
impaired or not possible.
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 Wait until the display message disappears before pulling away. Auxiliary battery Auxiliary battery
malfunction malfunction The auxiliary battery for the automatic transmission is no longer being
charged.
X Consult a qualified specialist workshop.
X Until then, set the automatic transmission to position Pbefore you
switch off the engine.
X Before leaving the vehicle, apply the electric parking brake. A 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. Display
messages
333On-board computer and displays Z
Warning/
indicator
lamp
N N
Signal type
Possible causes/consequences and M
M Solutions ֌
N
The yellow ESP ®
and ESP ®
OFF warning lamps are lit while the engine is running.
PLUG-IN HYBRID vehicles:
The yellow ESP ®
and ESP ®
OFF warning lamps are lit in the READY driving status.
ESP ®
, BAS, BAS PLUS with Cross-Traffic Assist, COLLISION PREVENTION ASSIST
PLUS, ESP ®
trailer stabilisation, PRE‑SAFE ®
, PRE‑SAFE ®
PLUS, PRE‑SAFE ®
Brake,
HOLD function, hill start assist, Crosswind Assist, adaptive brake lights, STEER
CONTROL, Active Lane Keeping Assist and Active Blind Spot Assist, for example,
are unavailable due to a malfunction.
ATTENTION ASSIST is deactivated.
self-diagnosis is not yet complete
G WARNING
The brake system continues to function normally, but without the functions listed above.
The braking distance may thus increase in an emergency braking situation.
If ESP ®
is not operational, ESP ®
is unable to stabilise the vehicle.
There is an increased danger of skidding and risk of an accident.
X Carefully drive on a suitable stretch of road, making slight steering 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 Consult a qualified specialist workshop immediately. !
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 in the multifunction display. 6
N
The red restraint system warning lamp is lit while the engine is running.
The restraint system is faulty.
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 in the multifunction display.
X Drive on carefully.
X Contact a qualified specialist workshop immediately and have the restraint sys-
tem checked.
For further information about the restraint system, see (Y page 43).346
Warning and indicator lamps in the instrument clusterOn-board computer and displays