Page 265 of 393

Display messages
Possible causes/consequences and
M
MSolutions ý Mercedes-AMG vehicles only:
If this symbol appears in the multifunction display, a seat belt tongue
has not been inserted in a rear seat belt buckle.
G WARNING
A seat belt which is not worn correctly, or which has not been engaged
in the seat belt buckle correctly, cannot provide the intended level of protection.
This poses an increased risk of injury.
X If necessary, ask the occupants in the rear to fasten their seat belts
(Y page 41).
Further information on the status indicator for the rear seat belts
(Y page 42). 6
Restraint sys. mal‐ Restraint sys. mal‐
function Consult function Consult
workshop workshop The restraint system is faulty.
The
6 warning lamp also lights up in the instrument cluster.
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 Consult a qualified specialist workshop immediately.
For further information about the restraint system, see (Y page 37).6
Front left malfunc‐ Front left malfunc‐
tion Consult work‐ tion Consult work‐
shop shopor
Front right
Front right
malfunction
malfunction Consult
Consult
workshop
workshop The restraint system 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 unintentionally or, in the event of an accident, may not be triggered.
This poses an increased risk of injury.
X Consult a qualified specialist workshop immediately. 6
Rear left malfunc‐ Rear left malfunc‐
tion Consult work‐ tion Consult work‐
shop shop
orRear right
Rear right
malfunction
malfunction Consult
Consult
workshop
workshop The restraint system 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 unintentionally or, in the event of an accident, may not be triggered.
This poses an increased risk of injury.
X Consult a qualified specialist workshop immediately. 262
Display
messagesOn-board computer and displays
Page 266 of 393

Display messages
Possible causes/consequences and
M
MSolutions 6
Rear Rear
centre
centre malfunc‐
malfunc‐
tion Consult work‐
tion Consult work‐
shop shop The restraint system 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 unintentionally or, in the event of an accident, may not be triggered.
This poses an increased risk of injury.
X Consult a qualified specialist workshop immediately. 6
Left windowbag mal‐ Left windowbag mal‐
function Consult function Consult
workshop workshoporRight
Right
windowbag malfunc‐
windowbag malfunc‐
tion Consult work‐ tion Consult work‐
shop shop The left or right windowbag is malfunctioning. The
6warning lamp
also lights up in the instrument cluster.
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 Consult a qualified specialist workshop immediately. Display
messages
263On-board computer and displays Z
Page 267 of 393

Display messages
Possible causes/consequences and
M
MSolutions Front-passenger
Front-passenger
airbag airbag
disabled
disabled See
See
Owner's Manual
Owner's Manual The front-passenger front airbag is disabled during the journey
although:
R an adult
or
R a person of the corresponding stature is on the front-passenger seat
If additional forces are applied to the seat, the weight the system
detects may be too low.
G WARNING
The front-passenger front airbag does not deploy during an accident.
This poses an increased risk of injury.
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 167).
X Switch the ignition off.
X Have the occupant on the front-passenger seat step out of the
vehicle.
X Make sure that the seat is unoccupied, close the front-passenger
door and switch on the ignition.
X Observe the PASSENGER AIR BAG indicator lamps in the centre
console and the multifunction display and check the following:
Seat unoccupied and ignition switched on:
R a self-diagnosis is carried out. The PASSENGER AIR BAG OFF and
PASSENGER AIR BAG ON indicator lamps light up simultaneously
for approximately six seconds
R the PASSENGER AIR BAG OFF indicator lamp must then light up
and remain lit after the self-diagnosis. If the indicator lamp is on,
the automatic front-passenger front airbag deactivation system
has disabled the front-passenger front airbag (Y page 45)
R the Front-passenger
Front-passenger airbag airbagenabled
enabled See
SeeOwner's
Owner's Manual
Manual
or Front-passenger
Front-passenger airbag
airbagdisabled
disabled See
SeeOwner's
Owner's Manual
Manual
display messages must not be shown in the multifunction display
X Wait for a period of at least 60 seconds until the necessary system
checks have been completed.
X Make sure that the display messages do not appear in the multi-
function display.
If these conditions are met, the front-passenger seat can be occupied again. Whether the PASSENGER AIR BAG OFF or ON indicator lamp
remains lit or goes out depends on how the automatic front-passenger
front airbag deactivation system classifies the occupant.
If the conditions are not met, the system is not operating correctly.
X Consult a qualified specialist workshop immediately.
Further information on the automatic front-passenger front airbag
deactivation feature (Y page 45).264
Display
messagesOn-board computer and displays
Page 268 of 393

Display messages
Possible causes/consequences and
M
MSolutions Front-passenger
Front-passenger
airbag enabled See airbag enabled See
Owner's Manual Owner's Manual The front-passenger front airbag is enabled during the journey
although:
R a child, a small adult or an object weighing less than the system
weight threshold is located on the front-passenger seat
or
R the front-passenger seat is not occupied
The system may detect objects or forces that are adding to the weight
applied to the seat.
G WARNING
The airbag may deploy unintentionally.
This poses an increased risk of injury. 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 167).
X Switch the ignition off.
X Open the front-passenger door.
X Remove the child and the child restraint system from the front-
passenger seat.
X Make sure there are no objects applying additional force to the seat.
The system may otherwise detect the additional force and interpret the seat occupant's weight as greater than it actually is.
X Make sure that the seat is unoccupied, close the front-passenger
door and switch on the ignition.
X Observe the PASSENGER AIR BAG indicator lamps in the centre
console and the multifunction display and check the following:
Seat unoccupied and ignition switched on:
R a self-diagnosis is carried out. The PASSENGER AIR BAG OFF and
PASSENGER AIR BAG ON indicator lamps light up simultaneously for approximately six seconds
R the PASSENGER AIR BAG OFF indicator lamp must then light up
and remain lit after the self-diagnosis. If the indicator lamp is on, the automatic front-passenger front airbag deactivation system
has disabled the front-passenger front airbag (Y page 45)
R the Front-passenger
Front-passenger airbag airbagenabled
enabled See
SeeOwner's
Owner's Manual
Manual
or Front-passenger
Front-passenger airbag
airbagdisabled
disabled See
SeeOwner's
Owner's Manual
Manual
display messages must not be shown in the multifunction display
X Wait for a period of at least 60 seconds until the necessary system
checks have been completed.
X Make sure that the display messages do not appear in the multi-
function display.
If these conditions are met, the front-passenger seat can be occupied again. Whether the PASSENGER AIR BAG OFF or ON indicator lamp
remains lit or goes out depends on how the automatic front-passenger
front airbag deactivation system classifies the occupant.
If the conditions are not met, the system is not operating correctly.
X Consult a qualified specialist workshop immediately. Display
messages
265On-board computer and displays Z
Page 269 of 393

Display messages
Possible causes/consequences and
M
MSolutions Further information on the automatic front-passenger front airbag
deactivation feature (Y page 45).Lights
i Vehicles with LED light bulbs in the light clusters:
The display message for the corresponding lamp only appears when all the LEDs in the lamp have
failed. Display messages
Possible causes/consequences and
M
MSolutions b
Left cornering Left cornering
light light
orRight cor‐
Right cor‐
nering light
nering light The left or right-hand cornering light is faulty.
X Consult a qualified specialist workshop. b
Left dipped beam Left dipped beam
or
Right dipped beam
Right dipped beam The left or right-hand dipped-beam headlamp is faulty.
X Consult a qualified specialist workshop. b
Trailer left tail Trailer left tail
lamp lamp
orTrailer
Trailer
right tail lamp
right tail lamp The left or right-hand trailer tail lamp is faulty.
X Consult the manufacturer's operating instructions. b
Trailer Trailer
left
leftindica‐
indica‐
tor
tor orTrailer
Trailer
right indicator
right indicator The left or right-hand trailer turn signal lamp is faulty.
X
Consult the manufacturer's operating instructions. b
Trailer brake lamp Trailer brake lamp The trailer brake lamp is faulty.
X Consult the manufacturer's operating instructions. b
Rear Rear
left
leftindicator
indicator
or Rear right indi‐
Rear right indi‐
cator
cator The rear left-hand or rear right-hand turn signal is faulty.
X Consult a qualified specialist workshop. b
Front left indica‐ Front left indica‐
tor tor
orFront right
Front right
indicator indicator The front left-hand or front right-hand turn signal is faulty.
X Consult a qualified specialist workshop. b
Left mirror indica‐ Left mirror indica‐
tor tor
orRight mirror
Right mirror
indicator
indicator The turn signal in the left-hand or right-hand exterior mirror is faulty.
X Consult a qualified specialist workshop. 266
Display
messagesOn-board computer and displays
Page 270 of 393

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 main beam Left main beam
or
Right main beam
Right main beam The left or right-hand main-beam headlamp is faulty.
X 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. b
Malfunction Malfunction
See SeeOwn‐
Own‐
er's Manual
er's Manual The exterior lighting is faulty.
X Consult a qualified specialist workshop. Display
messages
267On-board computer and displays Z
Page 271 of 393

Display messages
Possible causes/consequences and
M
MSolutions Vehicles with trailer tow hitch: a fuse may have blown.
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 167).
X Check the fuses (Y page 346).
X If necessary, replace the blown fuse. Observe the warning notes as
you do so.
If the multifunction display still shows the display message:
X Consult a qualified specialist workshop. b
Malfunction Malfunction
See
SeeOwn‐
Own‐
er's Manual
er's Manual The exterior lighting is faulty.
X Consult a qualified specialist workshop. b
AUTO lights inoper‐ AUTO lights inoper‐
ative ative The light sensor is faulty.
X
Consult a qualified specialist workshop. b
Switch off lights Switch off lights You leave the vehicle and the lights are switched on. A warning tone
also sounds.
X Turn the light switch to the Ãposition. b
Switch on headlamps Switch on headlamps You are driving without dipped-beam headlamps.
X
Turn the light switch to the Lorà position. Adaptive Highbeam Adaptive Highbeam
Assist Plus cur‐ Assist Plus cur‐
rently unavailable rently unavailable
See Owner's Manual See Owner's Manual Adaptive Highbeam Assist Plus is deactivated and temporarily inop-
erative.
Possible causes:
R the windscreen is dirty in the camera's field of vision
R visibility 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 Highbeam Assist Plus available again Adaptive Highbeam Assist Plus available again message is
displayed.
Adaptive Highbeam Assist Plus is operational again. Adaptive Highbeam Adaptive Highbeam
Assist Plus inoper‐ Assist Plus inoper‐
ative ative Adaptive Highbeam Assist Plus is faulty.
X Consult a qualified specialist workshop. 268
Display
messagesOn-board computer and displays
Page 272 of 393

Engine
Display messages
Possible causes/consequences and
M
MSolutions +
Top up coolant See Top up coolant See
Owner's Manual Owner's Manual 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 321).
If you have to top up the coolant frequently: X Contact a qualified specialist workshop and have the engine cooling
system checked. ? 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 moun-
tainous terrain and stop-start traffic. ?
Coolant Stop vehi‐ Coolant Stop vehi‐
cle Switch engine cle Switch engine
off off 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.
In addition, 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 traffic
conditions, and switch off the engine.
X Safeguard the vehicle against rolling away (Y page 167).
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 otherwisebe damaged.
X Pay attention to the coolant temperature display.
If the temperature increases again:
X Consult a qualified specialist workshop immediately.
Under normal operating conditions and with the specified coolant
level, the coolant temperature may rise to 120 †. Display messages
269On-board computer and displays Z