2022 MERCEDES-BENZ GLC SUV Owners Manual

Display messages
Possible causes/consequences and P Solutions
Û
Stop vehicle See Owner's
Manual * The 48 V on-board electrical system is malfunctioning. 
Stop the vehicle immediately in accordance with the tr aPc conditions. Do not continue driving. 
Switch oM t
he vehicle. 
Consult a q
ualiNed specialist workshop.
Û
Battery overheated Stop,
everybody out! Outdoors if
possible * The 48 V battery is overheating. There is a risk of
Nr
e.
Stop the vehicle immediately in accordance with the tr
aPc conditions. 
If possible, stop the vehicle in the open air and ensure that all vehicle occupants get out.
% Supporting vehicle functions may activate automatically, e.g. the air-recirculation mode as part of climate control. 
Do not continue driving. 
If smoke is present, leave the danger zone and call the Nr
e service immediately.
Consult a q
ualiNed specialist workshop even if there are no external signs of a Nre.
Û
4 V battery See Owner's
Manual * The 48 V on-board electrical system has function restrictions.
Comf
ort functions may be restricted. 
Consult a q
ualiNed specialist workshop immediately.526
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and P Solutions

Tyre pressure monitor
Display messages
Possible causes/consequences and P Solutions
Tyre press. monitor cur-
rently unavailable * There is interference from a powerful radio signal source As a result, no signals from the tyre pressure sensors are
being r eceived. The tyre pressure monitoring system is temporarily unavailable.
The tyre pressure monitoring system will restart automatically as soon as the cause has been rectiNed.
Drive on
Tyre press. monitor inoper-
ative * The tyre pressure monitoring system is malfunctioning. &
WARNING Ther
e is a risk of an accident if the tyre pressure monitoring system is malfunctioning
The tyre pressure monitoring system cannot issue a warning if there is pressure loss in one or more of the tyres.
T
yres with insuPcient tyre pressure may impair the driving characteristics as well as steering and braking. 
Have the tyre pressure monitoring system checked at a q
ualiNed specialist workshop. Tyre pressure monitor inop-
erative No tyre pressure
sensors
* The wheels
Ntt
ed do not have suitable tyre pressure sensors. The tyre pressure monitoring system is deactivated. 
Fit wheels with suitable tyre pressure sensors.
é
Wheel sensor(s) missing * There is no signal from the tyre pressure sensor in at least one wheel. No pressure value is displayed for the
aMect
ed
tyre. 
Have the faulty tyre pressure sensor replaced at a q
ualiNed specialist workshop. 528
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and P Solutions
é
Check tyre(s) * The tyre pressure in one or more tyres has dropped
signiNcantl y.
The wheel position is displayed. A warning tone will also sound. &
WARNING Risk of an accident due t
o insuPcient tyre pressure
= The tyr
es can burst.
= The tyres can wear excessively and/or unevenly.
= The driving characteristics as well as the steering and braking may be greatly impaired.
You could then lose control of the vehicle. 
Observe the recommended tyre pressures. 
Adjust the tyre pressure if necessary. 
Stop the vehicle in accordance with the tr
aPc conditions. 
Check the tyre pressure ( pag
e 422) and the tyres.
é Rectify tyre pressure * The tyre pressure is too low in at least one of the tyres, or the
diMer
ence in tyre pressure between the individual
wheels is too great. 
Check the tyre pressure and add air, if necessary. 
When the tyre pressure is correct, restart the tyre pressure monitor (  pag
e 425). Display messages and warning/indicator lamps
529

Display messages
Possible causes/consequences and P Solutions
é
Warning tyre malfunction * The pressure in one or more tyres has dropped suddenly. The wheel position is displayed. &
WARNING Risk of an accident fr om driving with a Oat tyre
= The tyr
es can overheat and be damaged.
= The driving characteristics as well as the steering and braking characteristics may be greatly impaired.
You could then lose control of the vehicle. 
Do not drive with a Oat tyr
e. 
Do not exceed the maximum permissible driving distance in emergency mode and the maximum permissible
speed wit

h a Oat MOExtended tyre. 
Observe the notes on Oat tyr
es. Notes on Oat
tyr
es ( page 401). 
Stop the vehicle in accordance with the tr
aPc conditions. 
Check the tyres.
é Tyre(s) overheated * At least one tyre is overheating. The
aMect
ed tyres are displayed in red. At temperatures close to the limit value, the
tyres are displayed in yellow. &
WARNING Risk of an accident fr
om driving with overheated tyres
Overheated tyres can burst. 530
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and P Solutions 
Reduce speed so that the tyres cool down. é
Reduce speed * At least one tyre is overheating. The
aMect ed tyres are displayed in red. At temperatures close to the limit value, the
tyres are displayed in yellow. &
WARNING Risk of an accident fr
om driving with overheated tyres
Overheated tyres can burst. 
Reduce speed so that the tyres cool down. Exhaust gas
aser
treatment Display messages
Possible causes/consequences and P Solutions

Display messages
Possible causes/consequences and P Solutions

Display messages
Possible causes/consequences and P Solutions