2018 MERCEDES-BENZ GLC Owners Manual

Display messages
Possible causes/consequences and P Solutions
Check Tires The tire pressur e in on e or mor e tires has dropped significantly. The
whee l position is displayed in th e multifunction display.
A warning tone also sounds.
G WARNIN G
Tir e pressures that are to o low pos e th e followin g hazards :R
they may burst, especially as th e load and vehicl e speed increase.R
they may wear excessivel y and/o r unevenly, whic h may greatl y
impair tire traction .R
th e drivin g characteristics , as well as steering and braking , may be
greatl y impaired.
There is a ris k of an accident.X
Stop th e vehicl e without making any sudden steering or braking
maneuvers . Pay attention to th e traffic condition s as you do so.X
Secur e th e vehicl e against rollin g away ( Y
page 158).X
Chec k th e tires and , if necessary, follow th e instruction s for a flat
tire ( Y
page 334). X
Chec k th e tire pressur e ( Y
page 358).X
If necessary, correc t th e tire pressure.
Warnin g Tir e Mal ‐
function The tire pressur e in on e or mor e tires has dropped suddenly. The whee l
position is shown in th e multifunction display.
G WARNIN G
Drivin g wit h a flat tire poses a ris k of th e followin g hazards :R
a flat tire affects th e abilit y to steer or brak e th e vehicl eR
you could lose control of th e vehicl eR
continued drivin g wit h a flat tire will caus e excessive heat build-up
and possibl y a fir e
There is a ris k of an accident.X
Stop th e vehicl e without making any sudden steering or braking
maneuvers . Pay attention to th e traffic condition s as you do so.X
Secur e th e vehicl e against rollin g away ( Y
page 158).X
Chec k th e tires and , if necessary, follow th e instruction s for a flat
tire ( Y
page 334).
Tir e Press. Monito r
Currently Unavaila‐
ble Becaus e there is interferenc e from a stron g source of radi o waves, no
signals from th e tire pressur e sensor s are detected. The tire pressur e
monitor is temporarily malfunctioning .X
Drive on .
The tire pressur e monitor restarts automatically as soo n as th e
problem has been resolved.
TirePress . Sen ‐
sor(s) Missin g There is no signal from th e tire pressur e sensor of on e or several tires .
The pressur e of th e affecte d tire is no t displayed in th e multifunction
display. X
Hav e th e fault y tire pressur e sensor replace d at a qualified special -
ist workshop . Display messages 26 3
On-board computer and displays Z

Display messages
Possible causes/consequences and P Solutions
Tir e Pressure Moni‐
tor Inoperative No
Wheel Sensor s The wheels mounte d do no t hav e a suitable tire pressur e sensor . The
tire pressur e monitor is deactivated.X
Moun t wheels wit h suitable tire pressur e sensors.
The tire pressur e monitor is activated automatically after drivin g for
a few minutes.
Tir e Press. Monito r
Inoperative The tire pressur e monitor is faulty.X
Visit a qualified specialist workshop .
Tires Overheate d The tire temperature monitoring function is no t available in all vehi-
cles.
At least on e tire has overheated. Affecte d tires are shown in red . At
temperatures close to th e limi t value , th e tires are shown in yellow .X
Drive mor e slowly.
Tires Overheate d
Decrease Speed The tire temperature monitoring function is no t available in all vehi-
cles.
At least on e tire has overheated.
G WARNIN G
Overheated tires can burst, particularly at high speeds .X
Drive mor e slowly so that th e tires cool down .
Vehicle Display messages
Possible causes/consequences and P Solutions
Shift to 'P' or 'N'
to Start Engine You hav e attempte d to start th e engin e wit h th e transmission in posi-
tion ^ or [ .X
Shift th e transmission to position ] or \\ .
Apply Brake to
Shift fro m 'P' You hav e attempte d to shift th e transmission to position [ , ^ or \\
without depressing th e brak e pedal .X
Depress th e brak e pedal .
To Deselect P or N,
Depres s Brake and
Start Engine Wit h th e engin e switched off , you hav e attempte d to shift th e trans -
mission out of position ] or \\ int o another transmission position .X
Depress th e brak e pedal .X
Start th e engine.
To Engage Trans‐
miss. Position R
First Depres s the
Brake You hav e attempte d to shift from position [ to position ^ .X
Depress th e brak e pedal .X
Shift th e transmission to position ^ .264
Display messages
On-board computer and displays

Display messages
Possible causes/consequences and P Solutions
Driver's Doo r Ope n
& Transmission Not
in P Ris k of Vehi‐
cle Rollin g Awa y The driver's door is open or no t fully closed and th e transmission is in
position ^ , \\ or [ .
A warning tone also sounds.
G WARNIN G
The vehicl e may rol l away.
There is a ris k of an accident.X
Shift th e transmission to position ] .X
Secur e th e vehicl e against rollin g away ( Y
page 158).X
Clos e th e driver's door completely.
Onl y Shift to 'P'
whe n Vehicl e is Sta ‐
tionar y The vehicl e is moving .X
Pull ove r and stop th e vehicl e safely as soo n as possible, payin g
attention to roa d and traffic conditions.X
Shift th e transmission to position ] .
Servic e Required Do
Not Shift Gears
Visit Dealer You canno t chang e th e transmission position due to a malfunction .
A warning tone also sounds.
If transmission position [ is selected:X
Drive to a qualified specialist workshop without shifting th e trans -
mission from position [ .
If transmission position ^ , \\ or ] is selected:X
Secur e th e vehicl e against rollin g away ( Y
page 158).X
Notify a qualified specialist workshop or breakdown service.
Reversing Not Possi‐
ble Servic e Required You canno t shift int o transmission position ^ due to a malfunction .
The transmission position s ] , \\ or [ continu e to be available.
A warning tone also sounds. X
Visit a qualified specialist workshop .
Transmission Mal ‐
function Sto p A malfunction has occurred in th e mechanical transmission compo -
nents.
A warning tone also sounds. The transmission automatically shift s to
position \\ . X
Pull ove r and stop th e vehicl e safely as soo n as possible, payin g
attention to roa d and traffic conditions.X
Shift th e transmission to position ] .X
Secur e th e vehicl e against rollin g away ( Y
page 158).X
Notify a qualified specialist workshop or breakdown service. Display messages 26 5
On-board computer and displays Z

Display messages
Possible causes/consequences and P Solutions
Sto p Vehicl e Leave
Engine Runnin g Wai t
Transmission Cool‐
ing The transmission has overheated. Pullin g away can be temporarily
impaire d or no t possible.X
Pull ove r and stop th e vehicl e safely as soo n as possible, payin g
attention to roa d and traffic conditions. Do no t continu e drivin g
under any circumstances. X
Leav e th e engin e running.X
Wait until th e display message disappear s before pullin g away.
e The tailgat e is open
G WARNIN G
Whe n th e engin e is running, exhaust gase s can ente r th e vehicl e inte-
rio r if th e tailgat e is open .
There is a ris k of poisoning .X
Clos e th e tailgate.
f The hoo d is open . A warning tone also sounds.
G WARNIN G
The open hoo d may bloc k your vie w when th e vehicl e is in motion .
There is a ris k of an accident.X
Pull ove r and stop th e vehicl e safely as soo n as possible, payin g
attention to roa d and traffic conditions.X
Secur e th e vehicl e against rollin g away ( Y
page 158).X
Clos e th e hood.
Q At least on e door is open . A warning tone also sounds.X
Clos e all th e doors.
o Rea r Lef t Backrest
Not Latche d or Rea r
Right Backrest Not
Latche d Vehicl e wit h through-loading feature in th e rear bench seat :
The backrest in th e rear is no t engage d on th e left-han d and/o r right -
han d side . X
Push th e backrest bac k until it engages.
o Rea r Center Back‐
res t Not Engage d Vehicl e wit h through-loading facilit y in th e rear compartment:
The center rear seat backrest is no t engaged.X
Push th e backrest bac k until it engages.266
Display messages
On-board computer and displays

Display messages
Possible causes/consequences and P Solutions

Display messages
Possible causes/consequences and P Solutions

Safety
Seat belts Warning/
indicator
lamp Q Signal type
Possible causes/consequences and P Solutions

Safety systems Warning/
indicator
lamp Q Signal type
Possible causes/consequences and P Solutions
'M
Q ' (USA only), M (Canada only): the red brake system warning lamp is lit
while the engine is running.
A warning tone also sounds.
G WARNING
The brake boosting effect is malfunctioning and the braking characteristics may be
affected.
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
Secure the vehicle against rolling away ( Y
page 158).X
Consult a qualified specialist workshop. X
Observe the additional display messages in the multifunction display.
'M
Q ' (USA only), M (Canada only): the red brake system warning lamp lights
up while the engine is running.
A warning tone also sounds.
There is not enough brake fluid in the brake fluid reservoir.
G WARNING
The braking effect 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
Secure the vehicle against rolling away ( Y
page 158).X
Do not add brake fluid. Adding more will not correct the malfunction. X
Consult a qualified specialist workshop. X
Observe the additional display messages in the multifunction display.
'
Q USA only: the red brake system warning lamp is lit while the engine is running.
The multifunction display also shows a display message with the & symbol.
The brake pads/linings have reached their wear limit. X
Visit a qualified specialist workshop.270
Warning and indicator lamps in the instrument cluster
On-board computer and displays