air condition MERCEDES-BENZ GLC SUV 2015 Service Manual
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Page 366 of 497
Display messages
Possible causes/consequences and
M
MSolutions Park
Park
Assist
Assist inoper‐
inoper‐
ative
ative PARKTRONIC is malfunctioning or faulty.
X Follow the instructions and helpful hints in the "Problems with
PARKTRONIC" section (Y page 257).
If the multifunction display still shows the display message: X Consult a qualified specialist workshop. 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.
Ã
inoperative inoperative DSR (Downhill Speed Regulation) is deactivated due to a fault.
X Have DSR checked at a qualified specialist workshop. Traffic Sign
Traffic Sign
Assist currently Assist currently
unavailable See unavailable See
Owner's Manual Owner's Manual Traffic Sign Assist is 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 dis-
play message disappears.
Traffic Sign Assist is operational again. Traffic Sign Traffic Sign
Assist inoperative Assist inoperative Traffic Sign Assist is faulty.
X Consult a qualified specialist workshop. ë
Off Off The HOLD function is deactivated. The vehicle is skidding.
A warning tone also sounds.
X Reactivate the HOLD function later (Y page 247). The HOLD function is deactivated. When the brake pedal is firmly
depressed, an activation condition is not fulfilled.
A warning tone also sounds.
X Check the activation conditions for the HOLD function
(Y page 247). Display
messages
363On-board computer and displays Z
Page 368 of 497
Display messages
Possible causes/consequences and
M
MSolutions DISTRONIC
DISTRONIC
PLUS
PLUSand
and
SPEEDTRONIC inop‐
SPEEDTRONIC inop‐
erative erative DISTRONIC PLUS and SPEEDTRONIC are faulty. A warning tone
also sounds.
Steering Assist and Stop&Go Pilot are therefore also unavailable.
X Consult a qualified specialist workshop. DTR+: steering DTR+: steering
assist. currently assist. currently
unavailable See unavailable See
Owner's Manual Owner's Manual Steering Assist and Stop&Go Pilot are 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
R there are no lane markings for a long or extended period
R the lane markings are worn, dark or covered, e.g. by dirt or snow
Once the causes listed above no longer apply, the display message goes out.
Steering Assist and Stop&Go Pilot are operative 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 219).
X Clean the windscreen. DTR+: steering DTR+: steering
assistant inopera‐ assistant inopera‐
tive tive Steering Assist and Stop&Go Pilot are faulty.
However, the DISTRONIC PLUS functions are still available.
A warning tone also sounds.
X Consult a qualified specialist workshop. Cruise Cruise
control
control and
and
SPEEDTRONIC inop‐
SPEEDTRONIC inop‐
erative erative SPEEDTRONIC and cruise control are malfunctioning.
A warning tone also sounds.
X Consult a qualified specialist workshop. SPEEDTRONIC sus‐
SPEEDTRONIC sus‐
pended pended When you depress the accelerator pedal beyond the pressure
point (kickdown), SPEEDTRONIC is switched to passive mode.
The speed limitation is not active.
X Drive slower than the stored speed without kickdown.
or
X Set a new speed.
or
X Call up the last speed stored again.
When the display message disappears, the speed limitation is
active. Display
messages
365On-board computer and displays Z
Page 370 of 497
Tyres
Display messages
Possible causes/consequences and
M
MSolutions Tyre pressure
Tyre pressure
Check tyres Check tyres The tyre pressure loss warning system has detected a significant
loss in pressure.
A warning tone also sounds.
Possible causes:
R you have changed the positions of the wheels and tyres or fitted
new wheels and tyres
R the tyre pressure in one or more tyres has dropped
G WARNING
Underinflated tyres pose the following risks:
R the tyres may burst, especially as the load and vehicle speed
increase
R the tyres may wear excessively and/or unevenly, which may
greatly impair tyre traction
R the 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 Safeguard the vehicle against rolling away (Y page 219).
X Check the tyres and, if necessary, follow the instructions for a
flat tyre (Y page 433).
X Check the tyre pressures and, if necessary, correct the tyre
pressure.
X Restart the tyre pressure loss warning system when the tyre
pressure is correct (Y page 460).Check tyre pres‐ Check tyre pres‐
sures sures
then
thenrestart
restart
Run Flat Indicator
Run Flat Indicator The tyre pressure loss warning system generated a display mes-
sage and has not been restarted since.
X Set the correct tyre pressure in all four tyres.
X Restart the tyre pressure loss warning system (Y page 460).Run Run
Flat
Flat Indicator
Indicator
inoperative
inoperative The tyre pressure loss warning system is faulty.
X Consult a qualified specialist workshop. Rectify tyre pres‐
Rectify tyre pres‐
sure sure 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 460).
X If necessary, correct the tyre pressure.
X Restart the tyre pressure monitor (Y page 462). Display
messages
367On-board computer and displays Z
Page 371 of 497
Display messages
Possible causes/consequences and
M
MSolutions Check tyre(s)
Check tyre(s) 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
Underinflated tyres pose the following risks:
R the tyres may burst, especially as the load and vehicle speed
increase
R the tyres may wear excessively and/or unevenly, which may
greatly impair tyre traction
R the 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 Safeguard the vehicle against rolling away (Y page 219).
X Check the tyres and, if necessary, follow the instructions for a
flat tyre (Y page 433).
X Check the tyre pressure (Y page 460).
X If necessary, correct the tyre pressure. Warning Warning
tyre
tyredefect
defect 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:
R a flat tyre affects the ability to steer or brake the vehicle
R you could lose control of the vehicle
R continued 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 Safeguard the vehicle against rolling away (Y page 219).
X Check the tyres and, if necessary, follow the instructions for a
flat tyre (Y page 433).368
Display
messagesOn-board computer and displays
Page 374 of 497
Display messages
Possible causes/consequences and
M
MSolutions Stop
Stop
vehicle
vehicle Leave
Leave
engine running
engine running
Wait Transmission Wait Transmission
cooling cooling 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 PLUG-IN HYBRID vehicles only:
The auxiliary battery for the transmission is no longer being
charged.
X Consult a qualified specialist workshop.
X Until then, set the 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
interior if the tailgate is open.
There is a risk of poisoning.
X Close the tailgate. ? 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 Safeguard the vehicle against rolling away (Y page 219).
X Close the bonnet. Active bonnet mal‐ Active bonnet mal‐
function See Own‐ function See Own‐
er's Manual er's Manual The active bonnet (pedestrian protection) is not active due to a
malfunction or because it has already been triggered.
X Consult a qualified specialist workshop. C C At least one door is open. A warning tone also sounds.
X Close all doors. Display
messages
371On-board computer and displays Z
Page 381 of 497
Warning/
indicator
lamp
N N
Signal type
Possible causes/consequences and M
MSolutions J
N
The red brake system warning lamp is lit while the engine is running.
PLUG-IN HYBRID vehicles: the red brake system warning lamp is shown in the READY driving status.
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 Pull over and stop the vehicle safely as soon as possible, paying attention to
road and traffic conditions. Do not continue driving under any circumstan-
ces.
X Safeguard the vehicle against rolling away (Y page 219).
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. 378
Warning and indicator lamps in the instrument clusterOn-board computer and displays
Page 386 of 497
Warning/
indicator
lamp
N N
Signal type
Possible causes/consequences and M
MSolutions å
N
The yellow ESP ®
OFF warning lamp is lit while the engine is running or the
ECO start/stop function is activated.
PLUG-IN HYBRID vehicles: the yellow ESP ®
OFF warning lamp is shown in the
READY driving status.
ESP ®
is deactivated.
G WARNING
If ESP ®
is deactivated, ESP ®
is unable to stabilise the vehicle.
Further driving systems or driving safety systems are thus restricted, e.g.
Active Blind Spot Assist. The system does not perform braking actions.
There is an increased danger of skidding and risk of an accident.
X Reactivate ESP ®
.
In rare cases (Y page 86) it may be better to deactivate ESP ®
.
Observe the important safety notes on ESP ®
(Y page 85).
X Adapt your driving style to suit the road and weather conditions.
If ESP ®
cannot be activated:
X Drive on carefully.
X Contact a qualified specialist workshop immediately and have the ESP ®
system checked. !
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
system checked.
For further information about the restraint system, see (Y page 46).Warning and indicator lamps in the instrument cluster
383On-board computer and displays Z
Page 390 of 497
Tyres
Warning/
indicator
lamp
N N
Signal type
Possible causes/consequences and M
MSolutions h
N
The yellow tyre pressure monitor warning lamp (pressure loss/malfunction)
is lit.
The tyre pressure monitor has detected a loss of pressure in at least one of the
tyres.
G WARNING
Underinflated tyres pose the following risks:
R the tyres may burst, especially as the load and vehicle speed increase
R the tyres may wear excessively and/or unevenly, which may greatly impair
tyre traction
R the 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 manoeu-
vres. Pay attention to the traffic conditions as you do so.
X Safeguard the vehicle against rolling away (Y page 219).
X Observe the additional display messages in the multifunction display.
X Check the tyres and, if necessary, follow the instructions for a flat tyre
(Y page 433).
X Check the tyre pressure (Y page 460).
X If necessary, correct the tyre pressure. h
N
The yellow tyre pressure monitor warning lamp (pressure loss/malfunction)
flashes for approximately one minute and then remains lit.
The tyre pressure monitor is faulty.
G WARNING
The system is possibly unable to detect or register low tyre pressure.
There is a risk of an accident.
X Observe the additional display messages in the multifunction display.
X Consult a qualified specialist workshop immediately. Warning and indicator lamps in the instrument cluster
387On-board computer and displays Z
Page 423 of 497
ASSYST PLUS service interval display after
the service work has been carried out. You
can also obtain further information on main-
tenance work, for example.
Special service requirements The prescribed service interval is based on
normal operation of the vehicle. Service work
will need to be performed more often if the
vehicle is operated under arduous conditions
or increased loads, for example:
R regular city driving with frequent intermedi-
ate stops
R if the vehicle is primarily used to travel
short distances
R for frequent operation in mountainous ter-
rain or on poor road surfaces
R if the engine is often left idling for long peri-
ods
In these or similar operating conditions, have,
for example, the air filter, engine oil and oil
filter changed more frequently. The tyres
must be checked more frequently if the vehi-
cle is operated under increased loads. Fur-
ther information can be obtained at a quali-
fied specialist workshop, e.g. a Mercedes-
Benz Service Centre.
Driving abroad An extensive Mercedes-Benz Service network
is also available in other countries. You can
obtain further information from any
Mercedes-Benz Service Centre. Care
General notes
H
Environmental note
Dispose of empty packaging and cleaning
cloths in an environmentally responsible man- ner. !
For cleaning your vehicle, do not use any
of the following:
R dry, rough or hard cloths
R abrasive cleaning agents
R solvents
R cleaning agents containing solvents
Do not scrub.
Do not touch the surfaces or protective
films with hard objects, e.g. a ring or ice
scraper. You could otherwise scratch or
damage the surfaces and protective film.
! Do not park up the vehicle for an extended
period straight after cleaning it, particularly after having cleaned the wheels with wheel
cleaner. Wheel cleaners could cause
increased corrosion of the brake discs and brake pads/linings. For this reason, you
should drive for a few minutes after clean-
ing. Braking heats the brake discs and the
brake pads/linings, thus drying them. The
vehicle can then be parked up.
Regular care of your vehicle is a condition for
retaining the quality in the long term.
Use care products and cleaning agents rec-
ommended and approved by Mercedes-Benz. Washing the vehicle and cleaning the
paintwork
Automatic car wash G
WARNING
Braking efficiency is reduced after the vehicle has been washed. There is a risk of an acci-
dent.
After washing the vehicle, brake carefully
while paying attention to the traffic conditions in order to restore full braking efficiency.
! When DISTRONIC PLUS or the HOLD
function is activated, the vehicle brakes
automatically in certain situations. 420
CareMaintenance and care
Page 461 of 497
Tyre pressure
Tyre pressure specifications
G
WARNING
Underinflated or overinflated tyres pose the
following risks:
R the tyres may burst, especially as the load
and vehicle speed increase.
R the tyres may wear excessively and/or
unevenly, which may greatly impair tyre
traction.
R the driving characteristics, as well as steer-
ing and braking, may be greatly impaired.
There is a risk of an accident.
Observe the recommended tyre pressure and check the tyre pressure of all the tyres includ-
ing the spare wheel:
R at least every two weeks
R when the load changes
R before embarking on a longer journey
R for changed operating conditions, e.g. off-
road driving
If necessary, correct the tyre pressure. G
WARNING
If you fit unsuitable accessories onto tyre
valves, the tyre valves may be overloaded and malfunction, which can cause tyre pressure
loss. Due to their design, retrofitted tyre pres-
sure monitors keep the tyre valve open. This
can also result in tyre pressure loss. There is a risk of accident.
Only screw standard valve caps or valve caps
specifically provided by Mercedes-Benz for
your vehicle onto the tyre valve. G
WARNING
If the tyre pressure drops repeatedly, the
wheel, valve or tyre may be damaged. Tyre
pressure that is too low may result in a tyre
blow-out. There is a risk of accident.
R Check the tyre for foreign objects.
R Check whether the wheel is losing air or the
valve is leaking. If you are unable to rectify the damage, con-
tact a qualified specialist workshop.
H
Environmental note
Check the tyre pressure regularly, at least
every 14 days.
The recommended tyre pressures for various
operating conditions can be found in the tyre pressure table on the fuel filler flap
(Y page 205).
Operation with an emergency spare
wheel: information on operation with an
emergency spare wheel can be found in the
general notes in the "Emergency spare wheel"
section (Y page 475).
Operation with a trailer: the applicable
value for the rear axle is the maximum tyre
pressure value stated in the table inside the
fuel filler flap.
Additionally, the tyre pressure table may also state tyre pressures for different load condi-
tions. These are defined in the table as dif-
ferent numbers of passengers and amounts
of luggage. The actual number of seats may
vary; for more information, please refer to the
vehicle's registration documents.
If tyre sizes are not specified, the tyre pres-
sures stated on the tyre pressure table apply for all tyres approved for this vehicle. If a tyre size precedes a tyre pressure, the
following tyre pressure information is only
valid for that tyre size.
Use a suitable pressure gauge to check the
tyre pressure. The outer appearance of a tyre458
Tyre pressureWheels and tyres