MERCEDES-BENZ GLC SUV 2015 Owners Manual

Display messages
Possible causes/consequences and
M
MSolutions Front-passenger
Front-passenger
airbag disabled airbag disabled
See Owner's Manual See 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 acci-
dent.
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 219).
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 must 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-check. If the indicator lamp is on, the automatic front-passenger front airbag deactivation
system has disabled the front-passenger front airbag
(Y page 57)
R the Front-passenger airbag enabled See Owner's
Front-passenger airbag enabled See Owner's
Manual Manual orFront-passenger
Front-passenger airbag
airbagdisabled
disabled See
SeeOwn‐
Own‐
er's Manual
er's Manual display messages must not appear in the mul-
tifunction display
X Wait for a period of at least 60 seconds until the necessary sys-
tem checks have been completed.
X Make sure that the display messages do not appear in the mul-
tifunction display.
If these conditions are met, the front-passenger seat can be occu-
pied again. Whether the PASSENGER AIR BAG OFF or ON indicator 348
Display
messagesOn-board computer and displays

Display messages
Possible causes/consequences and
M
MSolutions lamp remains lit or goes out depends on how the automatic front-
passenger front airbag deactivation system classifies the occu-
pant.
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 56).Front-passenger Front-passenger
airbag airbag
enabled
enabled See
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 219).
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 inter-
pret 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 must 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 Display
messages
349On-board computer and displays Z

Display messages
Possible causes/consequences and
M
MSolutions system has disabled the front-passenger front airbag
(Y
page 57)
R the Front-passenger airbag enabled See Owner's Front-passenger airbag enabled See Owner's
Manual
Manual orFront-passenger
Front-passenger airbag
airbag disabled
disabled See
SeeOwn‐
Own‐
er's Manual
er's Manual display messages must not appear in the mul-
tifunction display
X Wait for a period of at least 60 seconds until the necessary sys-
tem checks have been completed.
X Make sure that the display messages do not appear in the mul-
tifunction display.
If these conditions are met, the front-passenger seat can be occu- pied 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 occu-
pant.
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 56).lights
i Vehicles with LED light bulbs in the light clusters:
The display message for the corresponding lamp only appears when all of 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 Right dipped
beam beam The left- or right-hand dipped-beam headlamp is faulty.
X Halogen headlamp: replace the bulb (Ypage 146).
X LED headlamps: 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. 350
Display
messagesOn-board computer and displays

Display messages
Possible causes/consequences and
M
MSolutions b
Trailer left indi‐ Trailer left indi‐
cator cator
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 left indica‐ Rear left indica‐
tor tor
orRear right
Rear right
indicator
indicator The rear left-hand or rear right-hand turn signal is faulty.
X Tail lamps (vehicles with halogen headlamps): replace the
bulb (Y page 146).
X Tail lamps (vehicles with LED headlamps): visit 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 Halogen headlamp: replace the bulb (Ypage 146).
X LED headlamps: consult a qualified specialist workshop. b
Left Left
mirror
mirror indica‐
indica‐
tor
tor orRight mir‐
Right mir‐
ror indicator
ror indicator The turn signal in the left-hand or right-hand exterior mirror 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
Third brake lamp Third brake lamp The third brake 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.
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 146).
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. Display
messages
351On-board computer and displays Z

Display messages
Possible causes/consequences and
M
MSolutions b
Rear fog lamp Rear fog lamp The rear foglamp is faulty.
X Consult a qualified specialist workshop. b
Front Front
left
leftparking
parking
lamp
lamp orFront
Front
right parking lamp
right parking lamp The front left or front right parking lamp is faulty.
X Consult a qualified specialist workshop. b
Reversing light Reversing light The left- or right-hand reversing lamp is faulty.
X Consult a qualified specialist workshop. b
Left daytime driv‐ Left daytime driv‐
ing lamp ing lamp
orRight
Right
daytime driving
daytime driving
lamp lamp The left- or right-hand daytime driving lamp is faulty.
X Consult a qualified specialist workshop. b
Active Light Sys‐ Active Light Sys‐
tem inoperative tem inoperative The active light function 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
without the Intelligent Light System.
X Consult a qualified specialist workshop. b
Malfunction See Malfunction See
Owner's Manual Owner's Manual The exterior lighting is faulty.
X Consult a qualified specialist workshop. 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 219).
X Check the fuses (Y page 448).
X If necessary, replace the blown fuse. Observe the warning notes
as you do so.
If the display message continues to be displayed: X Consult a qualified specialist workshop. b
AUTO AUTO
lights
lights inoper‐
inoper‐
ative
ative The light sensor is faulty.
X Consult a qualified specialist workshop. 352
Display
messagesOn-board computer and displays

Display messages
Possible causes/consequences and
M
MSolutions 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 Switch
on
onheadlamps
headlamps You are driving without dipped-beam headlamps.
X
Turn the light switch to the Lorà position. Adaptive Highbeam Adaptive Highbeam
Assist Assist
Plus
Plusinoper‐
inoper‐
ative
ative Adaptive Highbeam Assist Plus is faulty.
X Consult a qualified specialist workshop. Adaptive Highbeam
Adaptive Highbeam
Assist Plus cur‐ Assist Plus cur‐
rently rently
unavailable
unavailable
See Owner's Manual
See Owner's Manual Adaptive Highbeam Assist Plus is deactivated and temporarily
inoperative. 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, the
Adaptive Highbeam Assist Plus available again
Adaptive Highbeam Assist Plus available again display
message is shown.
Adaptive Highbeam Assist Plus is operational again. Engine
Display messages
Possible causes/consequences and
M MSolutions +
Top Top
up
upcoolant
coolant See
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 417).
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
mountainous terrain and stop-start traffic. Display
messages
353On-board computer and displays Z

Display messages
Possible causes/consequences and
M
MSolutions ?
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 traf-
fic conditions, and switch off the engine.
X Safeguard the vehicle against rolling away (Y page 219).
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.
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 †. #
See Owner's Manual See Owner's Manual The battery is not being charged.
A warning tone also sounds.
Possible causes:
R faulty alternator
R defective power electronics (PLUG-IN HYBRID vehicles)
R torn poly-V-belt
R a malfunction in the electronics
! Do not continue driving. The engine could otherwise overheat.
X Stop the vehicle immediately, paying attention to road and traf-
fic conditions, and switch off the engine.
X Safeguard the vehicle against rolling away (Y page 219).
X Consult a qualified specialist workshop. 354
Display
messagesOn-board computer and displays

Display messages
Possible causes/consequences and
M
MSolutions #
Stop vehicle See Stop vehicle See
Owner's Manual Owner's Manual The battery is no longer being charged and the battery charge level
is too low.
A warning tone also sounds.
X Stop the vehicle immediately, paying attention to road and traf-
fic conditions, and switch off the engine.
X Safeguard the vehicle against rolling away (Y page 219).
X Observe the instructions in the #See Owner's Manual
See Owner's Manual
display message.
X Consult a qualified specialist workshop. #
Stop Stop
vehicle
vehicle Leave
Leave
engine running
engine running The battery charge level is too low.
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 Start the engine.
X Wait until the display message disappears before pulling away. #
Start engine See Start engine See
Owner's Manual Owner's Manual The engine is off and the battery charge level is too low.
X Switch off electrical consumers that you do not need, such as
the rear window heating and interior lighting.
X Leave the engine running for a few minutes, or drive for a longer
distance.
The battery charges. 4
Check eng. oil Check eng. oil
lev. when next lev. when next
refuelling refuelling The engine oil level has dropped to the minimum level.
A warning tone also sounds.
! Avoid long journeys when there is too little coolant in the cool-
ing system. Otherwise the engine will be damaged.
X Check the oil level when next refuelling, at the latest
(Y page 416).
X If necessary, top up the engine oil (Y page 416).
If you have to top up the engine oil frequently:
X Contact a qualified specialist workshop and have the engine
checked.
Information on approved engine oils can be obtained from a quali- fied specialist workshop or on the Internet at http://
bevo.mercedes-benz.co m. Display
messages
355On-board computer and displays Z

Display messages
Possible causes/consequences and
M
MSolutions 8
Reserve fuel level Reserve fuel level 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 C There is very little fuel in the fuel tank.
The auxiliary heating cannot be operated.
X Refuel at the nearest filling station without fail. ¸
Replace Replace
air
aircleaner
cleaner Vehicles with a diesel engine: the engine air filter is dirty and must
be replaced.
X Consult a qualified specialist workshop. !
Clean Clean
the
thefuel
fuel fil‐
fil‐
ter
ter Vehicles with a diesel engine: there is water in the fuel filter. The
water must be drained off.
X Consult a qualified specialist workshop. Refill AdBlue See Refill AdBlue See
Owner’s Manual Owner’s Manual
The AdBlue
®
level has fallen below the reserve range. A warning
tone also sounds.
X Refill AdBlue ®
as soon as possible (Y page 207).Refill AdBlue No
Refill AdBlue No
start in ... mi start in ... mi
The AdBlue
®
level is only sufficient for the indicated distance. A
warning tone also sounds.
X Refill AdBlue ®
immediately (Y page 207).
i If you drive the vehicle faster than 15 km/h the
Refill
Refill
AdBlue
AdBlue No
Nostart
start in
in...
... mi
mimessage goes out after approx-
imately one minute. Refill
Refill
AdBlue
AdBlueEng.
Eng.
start not possible
start not possible The AdBlue
®
tank is empty. A warning tone also sounds. You can
no longer start the engine.
X Add at least 3.5 l of AdBlue ®
(Y page 207).
X Turn the ignition on for approximately one minute.
The system requires approximately one minute after refilling to
detect the change in the AdBlue ®
level.
X Start the engine. Check AdBlue See
Check AdBlue See
Owner’s Manual Owner’s Manual
The AdBlue
®
system is malfunctioning. A warning tone also
sounds.
X Consult a qualified specialist workshop. 356
Display
messagesOn-board computer and displays

Display messages
Possible causes/consequences and
M
MSolutions Eng.
Eng.
start
start not
notpos‐
pos‐
sible in ... mi
sible in ... mi The AdBlue
®
system is malfunctioning. A warning tone also
sounds.
X Consult a qualified specialist workshop immediately. Eng.
Eng.
start
start not
notpos‐
pos‐
sible sible The AdBlue
®
system is malfunctioning. A warning tone also
sounds. You can no longer start the engine.
X Consult a qualified specialist workshop immediately. Hybrid drive system
Display messages
Possible causes/consequences and
M MSolutions d
Vehicle is opera‐ Vehicle is opera‐
tional Switch off tional Switch off
the ignition the ignition
before exiting before exiting PLUG-IN HYBRID vehicles:
You are exiting the vehicle when it is in a ready-to-drive state. The
READY indicator in the multifunction display is on. A warning tone also sounds.
If you leave the vehicle:
X Safeguard the vehicle against rolling away (Y page 219).
X Switch off the ignition and remove the key.
If you do not leave the vehicle: X Switch off the electrical consumers, e.g. automatic climate con-
trol, seat heating.
Please note the following: the electrical consumers are supplied by
the 12 V battery. If the vehicle is left in a ready-to-drive state for an extended period, it will switch off once the 12 V battery is almostempty. It will then only be possible to start the vehicle using a
second battery (jump-starting). Change Change
the
thecurrent
current
drive program
drive program
before changing before changing
the operating the operating
mode modeor Exit manual
Exit manual
drive program M
drive program M
before changing before changing
the operating mode the operating mode PLUG-IN HYBRID vehicles:
You have attempted to change the operating mode in the auto-
matic drive program
S(Sport), S+(Sport Plus) or in the manual
drive program M.
X Activate drive program C(Comfort) or E(Economy)
(Y page 295).
X Select the preferred operating mode HYBRID,E-MODE,E-SAVE
or CHARGE (Ypage 290). Display
messages
357On-board computer and displays Z