2021 MERCEDES-BENZ GLC COUPE trailer

Display messages
Possible causes/consequences and M MSolutions #
Ifth e ball neck has been extended: initiate a new swivel mo vement (/ page240).
The ball neck will engage beneath th e bumper.
If th e display message does not disappear, the trailer hitch is malfunctioning and the ball neck is not loc ked. #
Do not couple up the trailer. Drive on without the trailer. No tethere duced ground clearance due tothe
unlo cked ball nec k. #
Consult a qualified specialist workshop.
Ù Steering malfunction
Increased physical effort
See Owner's Manual *T
he po werst eering assis tance is malfunctioning. &
WARNING Risk of an accident due toaltered steering characteristics
If th e po wer assi stance of thesteering fails partially or comple tely, you will need touse more forc eto steer. #
If safe steering is possible, drive on carefully. #
Visit or consult a qualified specialist workshop immediatel y. Ù
Steering malfunction Stop
immediately See Owner's
Manual *T
hesteering is malfunctioning. Steering capability is significant lyimpaired. &
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. Display messa
ges and warning/indicator lamps 383

Display messages
Possible causes/consequences and M MSolutions #
Ifth e display message does not disappear, stop theve hicle in accordance with the tra ffic conditions and restart
th e engine. #
If necessar y,clean there ar bumper. If the bumper is especially dirty, the sensors in the bumper may be mal‐
functioning.
Blind Spot Assist inopera-
tive *B
lind Spot Assist is malfunctioning. #
Consult a qualified specialist workshop.
Blind Spot Assist not availa-
ble when towing a trailer
See Owner's Manual *W
hen you es tablish the electrical connection tothe trailer, Blind Spot Assist will be una vailable. #
Press the left-hand Touch Control and ackn owledge the display message.
Active Blind Spot Assist
currently unavailable See
Owner's Manual *A
ctive Blind Spot Assi stistemp orarily una vailable.
The sy stem limits ha vebeen reached (/ page213).
On ce the cause of the problem is no longer present, the sy stem will be available again. #
Drive on.
or #
Ifth e display message does not disappear, stop theve hicle in accordance with the tra ffic conditions and restart
th e engine.
Active Blind Spot Assist
inoperative *A
ctive Blind Spot Assi stis malfunctioning. #
Consult a qualified specialist workshop. 402
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and M MSolutions
Active Blind Spot Assist
not available when towing
a trailer See Owner's Man-
ual *W
hen you es tablish the electrical connection tothe trailer, Active Blind Spot Assi stwill be una vailable. #
Press the left-hand Touch Control and ackn owledge the display message.
Active Lane Keeping Assist
currently unavailable See
Owner's Manual *A
ctive Lane Keeping Assist is temp orarily una vailable.
The ambient conditions are outside the sy stem limits (/ page215).
As soon as the ambient conditions are within the sy stem limits, the sy stem will become available again.
Ve hicles with Active Steering Assis t:the camera view may be limited bythe windscreen. #
Drive on.
Ve hicles with Active Steering Assis t:ifth e display message does not disappear: #
Stop theve hicle in accordance with the tra ffic conditions. #
Clean the windscreen.
Active Lane Keeping Assist
inoperative *A
ctive Lane Keeping Assist is malfunctioning. #
Consult a qualified specialist workshop.
Active Lane Keeping Assist
Camera view restricted
See Owner's Manual *
Ve hicles without Active Steering Assis t:the camera view is restricted.
Po ssible causes:
R Dirt on the windscreen in the camera's field of vision
R Heavy rain, snow or fog Displ
aymessa ges and warning/indicator lamps 403

Display messages
Possible causes/consequences and M MSolutions
Á Vehicle rising Please wait *T
hevehicle le vel is too lo w.The vehicle will be raised tothe selected vehicle le vel. #
Wait until the display message disappears before pulling away.
Á Please reduce speed *Y
ou are driving toofast forth e selected vehicle le vel. #
Toadjust theve hicle le vel,yo u must not drive at speeds greaterth an 80 km/h. #
Toadjust theve hicle le vel during trailer operation, you must not drive at speeds greaterth an 30 km/h.
Parking Assist Manoeu-
vring assistance limited
See Owner's Manual *T
heParking Assist manoeuvring assis tant is temp orarily una vailable or only partially available. #
Clean all sensors of the parking and camera sy stem (/ page 309). #
Ifth e display message still appears, consult a qualified specialist workshop.
Parking Assist and
PARKTRONIC inoperative
See Owner's Manual *
Ve hicles with Active Parking Assis t:Ac tive Parking Assist and Parking Assist PARKTRONIC are malfunctioning.
Ve hicles without Active Parking Assis t:Pa rking Assist PARKTRONIC is malfunctioning. #
Stop theve hicle in accordance with the tra ffic conditions and restart the engine. #
Ifth e display message still appears, consult a qualified specialist workshop. 406
Display messages and warning/indicator lamps

Instrument display (standard)
Wi
descreen cock pit 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:
6 Re
stra int sy stem (/ page 427)
ü Seat belt (/
page 427)
ï Trailer hit ch (/page 428)
Ù Powe rst eering (/ page 428)
ÿ Coolanttemp erature (/ page 430)
; Engine diagnostics (/
page 430)
% Ve
hicles with a diesel engine: pre‐
gl ow
# Electrical
fault (/ page 430)
8 Re
ser vefuel with fuel filler flap loca‐
tion indicator (/ page 430)
! Elect
ric pa rking brake (red)
(/ page 433)
! Electric parking brake (yellow)
(/
page 433)
J Brakes (yellow) (/
page 433)
J Brakes (red) (/
page 433) L
Distance warning (/ page 435)
! ABS (/
page 436)
÷ ESP®
(/ page 436)
å ESP®
OFF (/ page 436)
h Ty
re pressure monitoring sy stem
(/ page 438)
T St
anding lights (/ page127)
L Low beam (/
page127)
K High beam (/
page129)
#! Tu
rn signal lights (/ page129)
R Re
ar fog light (/ page127) 426
Displaymessa ges and warning/indicator lamps

Wa
rning/indicator lamp
Possible causes/consequences and M MSolutions
ï Tr ailer tow hit chwarning
lamp *T
hered trailer hitch warning lamp is lit.
The trailer hitch is not operational or is swivelling. &
WARNING Risk of an accident if the ball neck is not loc ked
The trailer may become de tach ed. #
Stop theve hicle immediately in accordance with the traf fic conditions. Do not continue driving. #
Uncouple the trailer and secure it against rolling away. #
Initiate a new swivel mo vement and do not re-couple the trailer until thewa rning/indicator lamp goes out. #
Notethe messages on the multifunction displa y.
If th e trailer hitch is swivelling: #
Wait until the ball neck has reached the operational position. Display messages and
warning/indicator lamps 429

ï
Check trailer hit chlock............... .382
h Checktyre(s)................................ 416
! Clean the fuel filter ...................... 388
ÿ Coolant Stop vehicle Switch
engine off..............................................3 86
! currently una vailable See Own‐
er's Manual .......................................... .407
÷ currently una vailable See Own‐
er's Manual .......................................... .408
5 Engine oil le vel cannot be
measured .............................................. 425
5 Engine oil le velRe duce oil le vel.... 424
5 Engine oil le velSt op vehicle
Switch engine off................................... 424
5 Engine oil pressure Stop
Switch off engine.................................. 425
ä Fault Drive at max. 80 km/h........ 404
6 Front left malfunction Consult
wo rkshop (e xample).............................. 371
& inoperative Battery low................ 380 &
inoperative Refuel vehicle ............ 380
& inoperative See Owner's Man...... 380
! inoperative See Owner's Man‐
ual......................................................... 408
÷ inoperative See Owner's Man‐
ual......................................................... 409
T inoperative See Owner's Manual. .410
G Inoperative.................................... 412
: Intellige nt Light Sy stem inoper‐
ative...................................................... 377
Á Key not de tected (red displ ay
messa ge)............................................... 375
Á Key not de tected (white display
messa ge)............................................... 374
: Left dipped beam (e xamp le)........ .376
6 Left windowbag malfunction
Consult workshop (e xample)................ .371
 Lowe ring...................................... 405
: Malfunction See Owner's Man‐
ual......................................................... 376ð
Maximum speed exceeded ........... 399
Ø ..................................................... 420
ç Off................................................3 98
ë Off................................................ 396
ï Operation only possible in
transmission position P......................... 381
! Parking brake See Owner's
Manual .................................................. 391
Á Please reduce speed .................... 406
Ý Please wait 48 V battery charg‐
ing .......................................................... 414
_ Rear left seat backrest not
loc ked (Example)................................... 385
h Rectify tyre pressure..................... 417
Ø Refill Ad Blue See Owne r’s
Manual.................................................. 420
! Release parking brake .................. 394
¸ Replace air cleaner ...................... 388
Á Replace key.................................. 374
8 Reser vefuel le vel......................... 388 448
Index

6
Restra int sys. malfunction Con‐
sult workshop........................................ 371
# See Owner's Manual..................... 413
Ù Steering malfunction Incre ased
ph ysical ef fort See Owner's Manual...... 383
Ù Steering malfunction Stop
immediately See Owner's Manual ......... 383
# Stop vehicle Lea veengine run‐
ning ........................................................ 414
# Stop vehicle See Owner's Man‐
ual..........................................................4 13
Á Stop vehicle Vehicle too low......... 404
ç suspended...................................3 98
: Switch off lights ........................... 377
: Switch on headlamps................... 377
Ø Top up AdBlue Emergency op.
in XXX miles See Owner's Manual......... 420
+ Top up coolant See Owner ’s
Manual.................................................. 386
¥ Top up washer fluid ...................... 385 ï
Trailer coupling in motion .............381
! Turn on the ignition torelease
th e parking brake..................................3 95
d Vehicle is operational Switch
off ignition before exiting....................... 381
Á Vehicle rising Please wait............ .406
Á Vehicle rising................................4 05
h Warning tyre defect..................... .417
h Wheel sensor(s) missing ...............416
Ø XX,X l Top up AdBlue Switch on
ignition, wait 60 sec. or eng. start
not poss................................................ .421
Ac tive Blind Spot Assi stcur rently
una vailable See Owner's Manual ...........402
Ac tive Blind Spot Assi stinope rative ...... 402
Ac tive Blind Spot Assi stnot available
when towing a trailer See Owner's
Manual .................................................. 403
Ac tive bonnet malfunction See Own‐
er's Manual........................................... 384 Ac
tive Brake Assi stFunctions cur‐
re ntly limited See Owner's Manual ........41 0
Ac tive Brake Assi stFunctions limited
See Owner's Manual.............................. 411
Ac tive Dis tance Assi stavailable again ...3 99
Ac tive Dis tance Assi stcur rently
una vailable See Owner's Manual ...........398
Ac tive Dis tance Assi stinope rative ........ 398
Ac tive Lane Keeping Assist Camera
view restricted See Owner's Manual..... 403
Ac tive Lane Keeping Assist cur rently
una vailable See Owner's Manual ...........403
Ac tive Lane Keeping Assist inopera‐
tive........................................................ 403
Ac tive Steering Assist cur rently
una vailable due tomultiple emer‐
ge ncy stops...........................................4 00
Ac tive Steering Assist cur rently
una vailable See Owner's Manual ...........399
Ac tive Steering Assist inoperative ......... 399 Index
449