2021 MERCEDES-BENZ GLC COUPE brake light

Display messages
Possible causes/consequences and M MSolutions
!
÷ inoperative See Owner's
Manual *
ABS and ESP ®
are malfunctioning.
Other driving sy stems and driving saf ety sy stems (e.g. BAS) may also be malfunctioning.
The brake sy stem will continue tooperate normally. Braking dis tance may increase in an emergency braking situa‐
tion. &
WARNING Risk of skidding if ABS and ESP ®
are malfunctioning
The wheels may block duri ng braking and ESP®
does not pe rform any vehicle stabilization.
The steerability and braking characteristics are heavily impaired and the braking dis tance may increase. In addi‐
tion, other driving saf ety sy stems are switched off. #
Drive on carefull y. #
Have ABS and ESP ®
ch ecked immediately at a qualified specialist workshop. ÷
currently unavailable See
Owner's Manual *
ESP ®
is temp orarily una vailable.
Other driving sy stems and driving saf ety sy stems (e.g. BAS) may also be malfunctioning. &
WARNING Risk of skidding if ESP is malfunctioning ®
If ESP ®
is malfunctioning, ESP ®
cannot car ryout vehicle stabilisation. In addition, other driving saf ety sy stems
are switched off. #
Drive carefully on a suitable stre tch of road, making slight steering mo vements at a speed abo ve30 km/h. 408
Displaymessa ges 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

Brakes
Wa
rning/indicator lamp
Possible causes/consequences and M MSolutions
! Elect ric pa rking brake indi‐
cator lamp (red)
!
The elect ric pa rking brake
(yellow) indicator lamp *T
he red elect ric pa rking brake indicator lamp flashes or is lit.
The yellow elect ric pa rking brake indicator lamp also lights up in theev ent of a malfunction. #
Notethe messages on the multifunction displa y.
J
Brake sy stem warning lamp
(yellow) *T
he yellow brake sy stem warning lamp is lit while the engine is running. &
WARNING Risk of an accident due toa brake sy stem malfunction
If th e brake sy stem is malfunctioning, braking characteristics may be impaired. #
Drive on carefull y. #
Have the brake sy stem checked immediately at a qualified specialist workshop. #
Adjust your speed and drive on carefull y,leaving a suitable dis tance totheve hicle in front. #
Ifth e multifunction display sho wsa display message, obse rve it. Display messages and
warning/indicator lamps 433

Wa
rning/indicator lamp
Possible causes/consequences and M MSolutions #
Do not top up the brake fluid. Driving sy
stems Wa
rning/indicator lamp
Possible causes/consequences and M MSolutions
L Wa rning lamp for dis tance
wa rning function *T
he red dis tancewarning lamp lights up while theve hicle is in motion.
The dis tance totheve hicle in front is too small forth e speed selected.
If th ere is an additional warning tone, you are approaching an obs tacle at too high a speed. #
Be prepared tobrake immediatel y. #
Increase the dis tance.
Fu nction of Active Brake Assi st (/ page 206). Display messages and
warning/indicator lamps 435

Sy
stem limitations................................. 232
Ac tive Se rvice Sy stem PLUS
see AS SYST PLUS
Ac tive Speed Limit Assi st
Displ ay.................................................. 200
Fu nction................................................ 200
Ac tive Steering Assist
Ac tivating/deactivating......................... 205
Ac tive Emergency Stop Assis t............... 205
Fu nction................................................ 203
Sy stem limits.........................................2 03
Ad aptive brake lights ................................ 191
Ad aptive cruise control
see Active Dis tance Assi stDISTRONIC
Ad aptive functions, MULTIBEAM LED
see Intelligent Light Sy stem
Ad aptive Highbeam Assist
Fu nction................................................ 13 2
Switching on/of f................................... 13 3
Ad aptive Highbeam Assist Plus
Fu nction................................................ 13 3
Switching on/of f................................... 13 4Ad
Blue ®
Ad ditives...............................................3 62
Capacity................................................ 362
No tes..................................................... 174
Purity..................................................... 362
To pping up............................................. 175
Ad ditional door lo ck.................................... 76
Ad diti ves
Ad Blue ®
................................................ 362
Engine oil.............................................. 363
Fu el....................................................... 360
Ad diti ves (AdBlue ®
)
see AdBlue ®
Ad diti ves (engine oil)
see Additives
Ad diti ves (fuel)
see Fuel
ADS PLUS damping sy stem
see AIR BODY CONTROL
Af ter-sales service centre
see ASS YST PLUS
AIR BODY CONT ROL
Setting................................................... 219Suspension............................................
217
Air conditioning menu Calling up.............................................. 14 3
Air distribution Setting................................................... 14 2
Setting (MBUX multimedia sy stem)....... 14 4
Air freshener sy stem
see Frag rance sy stem
Air inlet see Air-water duct
Air pressure see Tyre pressure
Air suspension see AIR BODY CONTROL
Air vents
Ad justing (front).................................... .151
Ad justing (rear)..................................... .151
Air vents
see Air vents
Ai r-conditioning sy stem
see Climate control
Air-recirculation mode.............................. 14 5 Index
441

Brake Assist
System
see BAS (Brake Assi stSystem)
Brake fluid
No tes....................................................3 64
Brake forc e distribution
EBD (Elect ronic Brake forc e Distribu‐
tion).......................................................1 89
Brakes ABS (Anti-lock Braking Sy stem).............1 86
Ac tive Brake Assi st................................ 206
Ad aptive brake lights............................. 191
BA S (Brake Assi stSystem).................... 186
Driving tips........................................... .157
EBD (Electronic Brake forc e Distribu‐
tion).......................................................1 89
HOLD function....................................... 19 0
Limited braking ef fect (salt-treated
ro ads).................................................... 157
New/replaced brake linings/brake
discs...................................................... 15 5
Ru nning-in no tes.................................... 15 5
Braking assistance see BAS (Brake Assi stSystem) Breakdown
Overview of the help functions................ 18
To w- starting........................................... 331
To wing away.......................................... 327
Tr ansporting theve hicle........................ 329
Wheel chang e....................................... .345
Breakdown see Flat tyre
Buttons Steering wheel...................................... 250 C
Calls Mercedes me......................................... 278
Camera see 360° Camera
see Reversing camera
Car key
see Key
Car wash
see Care
Car wash (care)......................................... 305 Car-to-X-Communication
Displaying hazard warnings.................. .272
Care 360° camera........................................ .309
Air-water duct........................................ 305
Au tomatic car wash............................... 305
Carpe t.................................................... 310
Deco rative foil...................................... .308
Displ ay................................................... 310
Exterior lighting.................................... .309
High-p ressure cleaner........................... 306
Matt finis h............................................. 307
Pa int wo rk.............................................. 307
Plastic trim............................................ 310
Re alwo od/trim elements......................3 10
Re versing camera................................. .309
Ro of lining.............................................. 310
Ru nning boards..................................... 309
Seat belt................................................ 310
Seat co ver............................................. 310
Senso rs................................................. 309
St eering wheel....................................... 310
Ta ilpipes................................................ 309
Tr ailer hit ch........................................... 309
Wa shing byhand................................... 307 444
Index

Wi
reless vehicle components.................. 26
Decorative foil (cleaning instructions) .... 308
DeNOx agent see AdBlue ®
De stination entry
En tering a POI or address...................... 269
De tecting inat tentiveness
see ATTENTION ASSIST
Diagnostics connection .............................. 30
Diesel Low outside temp eratures..................... 360
No tes....................................................3 60
Digital Owner's Manual .............................. 20
Dinghy towing
see Tow- bar sy stem
DIRECT SELECT le ver
Engaging drive position........................ .168
Engaging neutral................................... .167
Engaging pa rkposition.......................... 16 8
Engaging pa rkposition automatically.... 16 8
Engaging reve rsege ar........................... 167
Fu nctio n................................................ 16 6Display (care)
.............................................3 10
Display (MBUX multimedia sy stem)
Home screen........................................ .255
Operating.............................................. 256
Display (on-board comp uter)
Displ ays on the multifunction displa y.... 251
Displ aymessage
Calling up (on-board compu ter)............. 370
No tes..................................................... 370
Display messages ¯ - - - km/h .................................... .397
ç - - - km/h ..................................... 398
È - - - km/h ..................................... 397
# 12V battery See Owner's Man‐
ual..........................................................4 12
Û 48 V battery See Owner's Man‐
ual.......................................................... 414
: Active Light Sy stem inoperative... 377
¯ AdBlue sy stem fault Emer. op.:
max. XXX mphSt art not poss. in XXX
miles .................................................... .422 ¯
AdBlue sy stem fault Emer‐
ge ncy op. in XXX km See Owner's
Manual.................................................. 421
¯ AdBlue sy stem fault Engine
st art not possible................................. .422
¯ AdBlue sy stem fault See Own‐
er's Manual ............................................ 421
5 Add 1 litre engine oil when
next refuelling ....................................... 423
é ATTENTION ASSIST inoperative ....396
é ATTENTION ASSIS T:Take a
break! .................................................... 396
: Automatic driving lights inoper‐
ative....................................................... 376
Á Changekey bat teries .................... 374
J Check brake fluid le vel................. 395
# Check brake pads See Owner's
Manual.................................................. 395
5 Check engine oil le vel when
next refuelling ....................................... 423 Index
447

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