2019 MERCEDES-BENZ GLC COUPE engine

Display messages
Possible causes/consequences and M
MSolutions #
Drive more slowl y.
Reduce speed *A
t least one tyre is overheating. The af fected tyres are displ ayed in red. At temp eratures close tothe limit value,
th e tyres are displa yed in yello w. &
WARNING Risk of an accident from driving wi thove rheated tyres
Overheated tyres may bur st, particularly at high speeds. #
Reduce speed so that the tyres cool down. #
Reduce speed so that the tyres cool down. Key
Display messages
Possible causes/consequences and M
MSolutions
À Replace key See Owner's
Manual *
Ve hicles with a digital vehicle key : only a few or no authorisations remain forst arting the engine. #
Make sure that the internet connection is not restricted bycer tain mobile phone settings. #
Open the Mercedes me connect http://www.mercedes.me and call up the digital vehicle key service. #
Deactivate the service firs t and then activate it again. #
Ifth e display message still appears, con tact the Mercedes-Benz Cus tomer Assis tance Center (C AC).
* Ve hicles with a digital vehicle keyst icke r:on lyafe w or no authorisations remain forst arting the engine. Display messages and
warning/indicator lamps 57 9

Display messages
Possible causes/consequences and M
MSolutions
Á Key not detected (red dis‐
play message) *T
hekey cannot be de tected and may no longer be in theve hicle.
The key is no lon ger in theve hicle and you swit choff the engine:
R You can no lon gerst art the engine.
R You cannot centrally lock theve hicle. #
Ensure that theke y is in theve hicle.
If th eke y de tection function has a malfunction due toast ro ng radio signal source: #
Stop theve hicle immediately in accordance with the traf fic conditions. #
Place theke y in the slot forst arting the engine with theke y (/ page168).
Place the key in the
marked space See Owner's
Manual *K
eydetection is malfunctioning. #
Change the location of theke y in theve hicle. #
Place theke y in the slot forst arting the engine with theke y (/ page168). Displ
aymessa ges and warning/indicator lamps 581

Ve
hicle Display messages
Possible causes/consequences and M
MSolutions
d Vehicle is operational
Switch off ignition before
exiting *Y
ou are leaving theve hicle when it is in a ready-to-drive state. #
When you lea vetheve hicle, switch off the ignition, secure theve hicle against rolling away and take theke y with
yo u. #
Ifyo u do not lea vetheve hicle, switch off the electrical consumers, e.g. the seat heating. Otherwise, the12 ‑V
battery may discharge and it will then be possible tostart theve hicle only using a donor battery (s tarting assis‐
ta nce).
ï Trailer coupling extending… *E
xtend or retract the ball nec k.
Do not attem pttospeed up, slow down or initiate the swivel mo vement using your hand, foot or other aids. During
th e swivel mo vement, do not couple a trailer.
When the ball neck has reached an operational position, the display message will disappear.
ï
Check trailer hitch lock
(white display message) *T
he trailer hitch is not operational during a journey with a trailer. #
Stop theve hicle immediately in accordance with the traf fic conditions and switch off the engine. #
Uncouple the trailer and secure it against rolling away. #
Toinitiate a new swivel mo vement, press and hold the button on theta ilgate until the ball neck engages
beneath the bumper (/ page 263). #
When the display message disappears, couple up the trailer and drive on. 582
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and M
MSolutions
Ù Steering malfunction Stop
immediately See Owner's
Manual *T
hesteering is malfunctioning. Steering capability is considerably impaired. &
WARNING Risk of accident if steering capability is impaired
If th esteering does not function as intended, theve hicle's operating saf ety is jeopardised. #
Pull over and stop theve hicle safely as soon as possible, paying attention toroad and traf fic conditions.
Do not continue driving under any circums tances. #
Consult a qualified specialist workshop. #
Stop theve hicle immediately in accordance with the traf fic conditions. Do not continue driving. #
Consult a qualified specialist workshop.
Active bonnet malfunction
See Owner's Manual *T
he active bonnet (pedestrian pr otection) is malfunctioning or inoperative af ter having already been triggered. #
Consult a qualified specialist workshop.
C *A
t least one door is open. #
Close all doors.
? *T
he bonnet is open. &
WARNING Risk of accident due todriving with the engine bonn etunlo cked
An unloc ked engine bonn etmay open up when theve hicle is in motion and block your vie w. Displ
aymessa ges and warning/indicator lamps 585

Display messages
Possible causes/consequences and M
MSolutions #
Never unlock the engine bonn etwhen driving. #
Before every trip, ensure that the engine bonn etis loc ked. #
Stop theve hicle immediately, paying attention toroad and traf fic conditions. #
Close the bonn et.
A *T
hetailgate is open. &
DANG ER Risk of exhaust gas poisoning
Combustion engines emit poisonous exhaust gases such as carbon monoxide. Exhaust gases can enter the
ve hicle interior if theta ilgate is open when the engine is running, especially if theve hicle is in motion. #
Alw ays switch off the engine before opening theta ilgate. #
Never drive with theta ilgate open. #
Close theta ilgate.
_ Rear left seat backrest not
locked (Example) *T
he seat backrest of the cor responding seat is not engaged. #
Foldthe seat backrest back until it engages. 586
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and M
MSolutions
¥ Top up washer fluid *T
hewasher fluid le vel in thewa sher fluid reser voir has dropped below the minimum. #
Top up thewa sher fluid (/ page 468). Climate cont
rol Display messages
Possible causes/consequences and M
MSolutions
& inoperative See Owner's
Man. *T
hestationary heater is temp orarily malfunctioning. #
When theve hicle is stationary on a le vel sur face and the engine has cooled down, make up tofour attem ptsto
switch on thest ationary heater, waiting se veral minutes between each attem pt. #
Ifth est ationary heater does not swit chon, consult a qualified specialist workshop.
&
inoperative Battery low *T
he on-board electrical sy stem voltage is too lo w.
The stationary heater has swit ched itself off. #
Drive for an extended pe riod until the battery has reached a suf ficient charge leve l again. Display messages and
warning/indicator lamps 587

Display messages
Possible causes/consequences and M
MSolutions #
Stop theve hicle in accordance with the tra ffic conditions. #
Clean the windscreen. Wa
rning and indicator lamps Overview of indicator and
warning lamps Some sy
stems will per form a self-test when the
ignition is switched on. Some indicator and
wa rning lamps may briefly light up or flash. This
behaviour is non-critical. These indicator and
wa rning lamps indicate a malfunction only if they
light up or flash af terth e engine has been star‐
te d or during a journe y. Instrument display (standard) Wi
descreen co ckpit instrument displ ay Depending on
the display setting, the positions
of the indicator lamps on the instrument display
may dif fer from theex ample shown.
Indicator and warning lamps:
L Low beam (/
page137)
T St
anding lights (/ page137) 592
Displaymessa ges and warning/indicator lamps

K
High beam (/
page 139)
#! Tu
rn signal lights (/ page139)
R Re
ar fog light (/ page137)
6 Re
stra int sy stem (/ page 593)
ü Seat belt not
fastened (/ page 599)
J Brakes (yellow) (/
page 593)
J Brakes (red) (/
page 593)
! Elect
ric pa rking brake (yellow)
(/ page 593)
! Electric parking brake (red)
(/ page 593) !
ABS malfunction (/
page 593)
÷ ESP®
(/ page 593)
å ESP®
OFF (/ page 593)
L Distance warning (/ page 600)
Ù Electric powerst eering malfunction
(/ page 605)
ä AIRBODY CONTROL malfunction
(/ page 600)
ä DYNA MIC BODY CONTROL malfunc‐
tion (/ page 600)
; Engine diagnostics(/
page 601)%
Preglow
# Electrical
fault (/ page 601)
8 Fu
elreser vewith fuel filler cap loca‐
tion indicator (/ page 601)
? Coolant
too hot/cold (/ page 601)
h Ty
re pressure monitor( /page 603)
ï Trailer hit chis not operational or is
swivelling (/ page 605) Saf
ety sy stems Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
! ABS warning lamp The
yellow ABS warning lamp is lit while the engine is running.
*ABS is malfunctioning. If th ere is an additional warning tone, EBD is malfunctioning.
Other drive sy stems and driving saf ety sy stems may also be malfunctioning. Display messages and
warning/indicator lamps 593