2022 MERCEDES-BENZ GLC COUPE engine coolant

Engine
Engine
Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
To switch off the engine,
press Start/Stop button
for at least 3 seconds or 3
times. *Y
ou ha vepressed the start/s top button while theve hicle is in motion. #
Information about switching o. theve hicle while driving (/ page 166).
Cannot start engine See
Owner's Manual *T
hevehicle cann otbe star ted. #
Switch theve hicle o. and switch it back on #
Ifth e display message still appears, consult a quali/ed specialist workshop.
+
Top up coolant See Own-
er’s Manual *T
he coolant le vel is too lo w.
* N NO
OTE
TE Engine damage due toinsu1cient coolant #
Avoid long journe yswith insu1cient coolant. #
Add coolant (/ page 334). #
Have the engine cooling system checked at a quali/ed specialist workshop. Displ
aymessages and warning/indicator lamps
429
429

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
ÿ
Coolant Stop vehicle
Switch engine off *T
he coolant is too hot. #
Stop immediately in accordance with the tra1c conditions and switch o. theve hicle. &
W WARNING
ARNING Risk of burns when opening the bonnet
If yo u open the bonnet in theev ent of an overheated engine or /re in the engine compartment, thefo llowing situa-
tions may occur:
R You may come into contact with hot gases.
R You may come into contact with other escaping hot operating 0uids. #
Before opening the bonnet, allow the engine tocool down. #
Intheev ent of a /re in the engine compartment, keep the bonnet closed and call the /re service. #
Wait until the engine has cooled down. #
Make sure that the air supply tothera diator is not obstructed. #
Avoiding high loads on the engine, drive tothe nearest quali/ed specialist workshop. In doing so, ensu rethat the
coolant temp erature display remains below 120°C.
ÿ *T
here is a malfunction in the engine cooling system. #
Avoiding high loads on the engine, drive tothe nearest quali/ed specialist workshop. In doing so, ensu rethat the
coolant temp erature display remains below 120°C. 430
430
Display messages and
warning/indicator lamps

Indicat
Indicat
or and w
or and w ar
arning lam
ning lam ps:
ps:
6 Restraint system (/ page 473)
ü Seat belt (/ page 473)
_ Reduced po wer (/ page 474)
Ú System error (/ page 474)
# Electricalfault (/ page 474)
ï Trailer hitch (/ page 475)
Ù Powe r steering (/ page 475)
ÿ Coolanttemp erature (/ page 477)
; Engine diagnostics (/ page 477)
% V
V ehicles wit
ehicles wit h a diesel engine:
h a diesel engine: preglow
# Electricalfault (/ page 477)
8 Reser vefuel wi thfuel /ller 0ap loca-
tion indicator (/ page 477)
! Electric parking brake (yellow)
(/page 480)
! Electric parking brake (red)
(/ page 480)
J Brakes (yellow) (/ page 480)
J Brakes (red) (/ page 480) L
Distancewarning (/ page 482)
Ó Active Brake Assist (/ page 482)
ê Active Brake Assist (/ page 482)
! ABS (/page 482)
÷ ESP®
(/ page 482)
å ESP®
OFF (/ page 482)
h Tyre pressure monitoring system
(/ page 485)
T Standing lights (/ page 134)
L Low beam (/ page 134)
K High beam (/ page 136)
#! Turn signal lights (/ page 136)
R Rear fog light (/ page 134)
Symbols on t
Symbols on t he centr he central display:
al displ ay:
É DriveAway Assist (/ page 263)
L CrossTra1c Ale rt (/ page 264) 472
472
Display messages and
warning/indicator lamps

Engine
Engine
W
W
ar
ar ning/indicat
ning/indicat or lampP
or lam pP ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
ÿ
Coolant warning lamp *T
he red coolant warning lamp is lit while the engine is running.
Po ssible causes:
R The temp erature sensor is malfunctioning
R The coolant le vel is too low
R The air supply tothera diator is obstructed
R The radiator fan is faulty
R The coolant pump is faulty
If th ere is an additional warning tone, the coolant temp erature has exceeded 120°C. &
W
WARNING
ARNING Risk of burns when opening the bonnet
If yo u open the bonnet in theev ent of an overheated engine or /re in the engine compartment, thefo llowing situa-
tions may occur:
R You may come into contact with hot gases.
R You may come into contact with other escaping hot operating 0uids. #
Before opening the bonnet, allow the engine tocool down. #
Intheev ent of a /re in the engine compartment, keep the bonnet closed and call the /re service. #
Stop immediately in accordance with the tra1c conditions and switch o. theve hicle. Do not continue driving. Displ
aymessages and warning/indicator lamps
477
477

W
W
ar
ar ning/indicat
ning/indicat or lampP
or lam pP ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions #
Notethe messages on the instrument displa y.
If t
If t he coolant t
he coolant t em
emper
per atur
atur e displa
e displa y is at t
y is at the low
he lower end of t
er end of t he t
he tem
emper
per atur
atur e scale:
e scale: #
Consult a quali/ed specialist workshop.
If t
If t he coolant t
he coolant t em
emper
per atur
atur e displa
e displa y is at t
y is at the upper end of t
he upper end of t he t
he tem
emper
per atur
atur e scale:
e scale: #
Exit theve hicle and keep a safe distance from it until the engine has cooled down. #
Check the coolant le vel (/ page 334). #
Make sure that the air supply tothera diator is not obstructed. #
Consult a quali/ed specialist workshop. #
Avoiding high loads on the engine, drive tothe nearest quali/ed specialist workshop. In doing so, ensu rethat the
coolant temp erature display remains below 120°C.
;
Engine diagnosis warning
lamp *T
he yellow engine diagnostics warning lamp is lit while the engine is running.
A malfunction has occur red in the engine, theex haust system or the fuel system.
The emissions limit value may ha vebeen exceeded and the engine may be running in eme rgency operation mode. #
Have theve hicle checked as soon as possible at a quali/ed specialist workshop.
V
V ehicles wit
ehicles wit h a diesel engine:
h a diesel engine: the fuel tank may ha vebeen run dr y. #
Start the engine thre eto four times aTer refuelling.
If th eye llow engine diagnosis warning lamp goes out, emer gency ope ration mode is cancelled. The vehicle need not
be checked. 478
478
Display messages and
warning/indicator lamps

Û
48 V battery See Owner's Man-
ual......................................................... 459
ò Acoustic presence indicator
inoperative............................................ .417
: Active Light System inoperative..... 410
¯ AdBlue system fault Emer. op.:
max. XXX mphSt art not poss. in XXX
miles.................................................... .467
¯ AdBlue system fault Emer gency
op. in XXX km See Owner's Manual........ 467
¯ AdBlue system fault Engine
start not possible................................... 468
¯ AdBlue system fault See Own-
er's Manual............................................ 467
5 Add 1 litre engine oil when next
re fuelling ............................................... 469
é ATTENTION ASSIST inoperati ve..... 439
é ATTENTION ASSIS T:Take a
break!.................................................... 439 :
Automatic driving lights inoper-
ative...................................................... 410
Û Battery overheated Stop, every-
body out! Outdoors if possible ........ 419, 459
Á Change key batteries .................... 407
è Charger cable connected .............. 417
J Check brake 0uid le vel.................. 438
5 Check engine oil le vel when
next refuelling ........................................ 468
ï Check trailer hitch lo ck(white
display message) .................................... 424
h Check tyre(s) ................................ 461
! Clean the fuel /lter....................... 431
Á Compressor is cooling .................. 450
ÿ Coolant Stop vehicle Switch
engine o............................................... 430
! currently una vailable See Own-
er's Manual............................................4 51
÷ currently una vailable See Own-
er's Manual............................................4 525
Engine oil le vel cannot be meas-
ured....................................................... 471
5 Engine oil le velRe duce oil le vel..... 469
5 Engine oil le velSt op vehicle
Switch engine o.................................... 469
5 Engine oil pressure Stop Switch
o. engine.............................................. 470
ä Fault Drive at max. 80 km/h ......... 448
6 Front leT malfunction Consult
wo rkshop (e xample)...............................4 04
& inoperative Battery low................. 414
& inoperative Char geHV battery...... 415
& inoperati veHigh-voltage battery
ch arging inco mplete ............................... 415
& inoperative Refuel vehicle............. .415
& inoperative See Owner's Man........ 414
! inoperative See Owner's Manual.. .452
÷ inoperative See Owner's Manual.. .453
T inoperative See Owner's Manual.. .454
G Inoperative................................... 456 494 494
Index

Tr
ansfer red data..................................... 310
Mer
Mer cedes me connect
cedes me connect
Ac cident/B reakdown Managemen t........312
Information............................................3 11
Tr ansfer red data..................................... 313
Mer
Mer cedes-
cedes- AMG v
AMG vehicles
ehicles
No tes..................................................... 162
Mer
Mercedes-Benz emerg cedes-Benz emerg ency call sy st
enc y call sy stem
em
Au tomatic emer gency call...................... 317
Data trans fer......................................... 319
ERA GLONASS test mode....................... 319
In fo rm ation........................................... .316
Manual emer gency call.......................... 318
Overview................................................ 317
Self-diagnosis........................................ 319
Mer
Mer cedes-Benz GenuineP
cedes-Benz GenuineP ar
ar ts
ts........................ .23
Mer
Mer cedes-Benz ser
cedes-Benz ser vice centre
vice centre....................... 38
Messag
Messag e memory
e memory ........................................ .402
Mirr
Mirr ors
ors
Mir rorfo lding function............................ 148
Outside mir rors...................................... 146
Re ar-view mir ror..................................... 147 Mobile phone
Mobile phone
Frequencies........................................... 383
Maximum transmission output............... 383
No tes on wireless chargin g.................... 130
Model type
Model type................................................... 385
MOExt MOExt ended tyr ended tyr es
es........................................ 345
Mot
Mot orwa
or wa y mode
y mode .......................................... .138 N
N
N
N a
avig
vig ation
ation
Ac tivating............................................... 296
Announcements..................................... 297
Destination entry................................... 298
Displaying/hiding the menu................... 296
Live Tra1c Information........................... 301
Map....................................................... 300
No tes..................................................... 296
N Neutr eutr al
al
En gaging................................................ 186 O
O
Occupant safe
Occupant safe ty
ty............................................ .47On-boar
On-boar
d com
d comput
puter
er, Computer, Operating system
Displaying the service due dat e.............. 328
Instrument displa y................................. 279
Menu overview.......................................2 77
Operating.............................................. 277
On-boar
On-boar d diagnos
d diagnostics int tics interf
erface
ace , Diagnos-
tics connection.............................................. 37
On-boar On-boar d electr d electronics
onics
Engine electronics................................. 382
Tw o-w ayradios...................................... 382
on-demand f on-demand f eature
eature........................................ .24
Online ser
Online ser vices
vices.............................................. 43
Open Sour
Open Sour ce
ceSoTw
SoTw are
are,Free soTware............. 44
Opening angle
Opening angle Limiting (tailgate)..................................... 92
Opening t
Opening t he t
he tailg
ailgat
ate using y
e using y our f
our foot
oot
HANDS-FREE ACCESS............................. 91
Oper
Oper ating
ating 0uids
0uids
Ad Blue ®
................................................ .391
Ad ditives................................................ 389
Brake 0uid............................................. 394
Coolant.................................................. 394
Diesel.................................................... 390 Index
507 507

Identi/cation plate................................
.385
Seat.......................................................3 85
V
V ision
ision
Demisting windo ws................................ 152 W
W
W
W ar
ar ning syst
ning syst em
em,ATA.................................... 100
W W ar ar ning tr
ning tr iangle
iangle........................................... 343
W
W ar
ar ning/indicat
ning/indicat or lamp
or lamp
! ABSwarning lamp......................... 482
J Brake system warning lamp (red)... 481
J Brake system warning lamp (yel-
low)....................................................... 480
ÿ Coolant warning lamp................... 477
! Electric parking brake indicator
lamp (red).............................................. 480
# Electrical fault warning lamp
...................................................... 475, 479
; Engine diagnosis warning lamp...... 478
å ESP®
OFF warning lam p................ 484
÷ ESP®
wa rning lamp 0ashes........... 483 ÷
ESP®
wa rning lamp lights up......... 483
8 Fuelreser vewarning lamp lights
up.......................................................... 479
Ù Powe r steering warning lamp
(red)...................................................... 475
_ Reduced warning lamp po wer....... 474
6 Restraint system warning lam p...... 473
ü Seat belt warning lamp 0ashes...... 474
ü Seat belt warning lamp lights up.... 474
Ú System er rorwa rning lam p........... 475
! The electric parking brake (yel-
low) indica tor lam p................................. 480
ï Trailer tow hitch warning lam p....... 476
h Tyre pressure monitoring sys-
te m wa rning lamp 0ashes....................... 485
h Tyre pressure monitoring sys-
te m wa rning lamp lights up.................... 485
L Warning lamp for distance
wa rning function.................................... 482 W
W ar ar ning/indicat
ning/indicat or lam
or lamps
ps
Instrument displa y................................. 471
PA SSENGER AIR BA G............................... 56
W
W asher
asher 0uid
0uid
Wi ndsc reen washer 0uid........................ 395
W
W ashing b
ashing b y hand
y hand.......................................... 337
W
W at
at er t
er t ank
ank ................................................... 336
W
W eat
eat her inf
her inf or
ormation
mation..................................... 301
W
W eb br ow
eb br owsers
sers
Overview................................................ 314
W
W edge
edge........................................................ .373
W
W eight inf
eight inf or
ormation
mation....................................... 385
Wheel c
Wheel c hange
hange
Fi tting a new wheel................................ 377
Lo we ring theve hicle.............................. 378
Preparation............................................ 374
Ra ising theve hicle................................. 375
Re moving a wheel................................. .377
Re moving//tting hub caps..................... 374
Wheel rot
Wheel rotation ation ............................................. 372
Wheels
Wheels Breakdown............................................. 344
Care..................................................... .339 518
518
Index