2021 MERCEDES-BENZ CLA COUPE engine overheat

W
W
ar
ar ning/indicat
ning/indicat or lampP
or lam pP ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
R The engine 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 theeve nt 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. #
Notethe messages on the instrument displa y.
If t If t he coolant t
he coolant t em
em per
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 333). Display message
s andwarning/indicator lamps
475
475

Displa
Displa
y messag
y messag es
es
ç - - - km/h..................................... 442
È - - - km/h..................................... 442
h - - - km/h..................................... 441
# 12 V battery See Owner's Man-
ual......................................................... 457
ò Acoustic presence indicator
inoperative............................................ .416
: Active Light System inoperative..... 410
¯ AdBlue system fault Emer. op.:
max. XXX km/h Start not poss. in
XXX km.................................................. 466
¯ AdBlue system fault Emer gency
op. in XXX miles See Owner's Manual.... 465
¯ AdBlue system fault Engine
start not possible................................... 466
¯ AdBlue system fault See Own-
er's Manual............................................ 465
5 Add 1 litre engine oil when next
re fuelling ............................................... 467 é
ATTENTION ASSIST inoperati ve..... 441
é ATTENTION ASSIS T:Take a
break!.................................................... 441
: Automatic driving lights inoper-
ative...................................................... 410
Û Battery overheated Stop, every-
body out! Outdoors if possible ................ 418
û Before starting the engine, turn
th e steering wheel.................................. 425
J Brake immediately ........................ 439
Á Change key batteries .................... 407
è Charger cable connected .............. 416
J Check brake 0uid le vel.................. 440
ï Check trailer hitch lock (white
display message) .................................... 422
h Check tyre(s) ................................ 460
! Clean the fuel /lter....................... 430
ÿ Coolant Stop vehicle Switch
engine o............................................... 429 !
currently una vailable See Own-
er's Manual............................................4 52
÷ currently una vailable See Own-
er's Manual............................................4 53
5 Engine oil le vel cannot be meas-
ured....................................................... 468
5 Engine oil le velRe duce oil le vel..... 467
5 Engine oil le velSt op vehicle
Switch engine o.................................... 467
5 Engine oil pressure Stop Switch
o. engine.............................................. 468
ä Fault Drive at max. 80 km/h ......... 451
6 Front leT malfunction Consult
wo rkshop (e xample)...............................4 04
& inoperative Battery low................. 413
& inoperative Char geHV battery...... 414
& inoperati veHigh-voltage battery
ch arging inco mplete ............................... 414
& inoperative Refuel vehicle............. .414
& inoperative See Owner's Man........ 413 Index
493 493

Apply brake
toselect D or R ...................431
Apply brake toselect R .......................... 431
Au xiliary battery malfunction (red dis-
play message) ....................................... .435
Au xiliary battery malfunction (white
displ aymessage) .................................... 435
Beginning emer gency stop..................... 445
Blind Spot Assist cur rently una vailable
See Owner's Manual.............................. 446
Blind Spot Assist inoperative.................. 447
Blind Spot Assist not available when
to wing a trailer See Owner's Manual ...... 447
Cann otstart engine See Owner's
Manual................................................. .428
Charging fault Please change charging
me thod See Owner's Manual .................417
Charging me thod cur rently una vaila-
ble Please try again or change charg-
ing me thod............................................ 417 Check brake pads See Owner's Man-
ual........................................................
.440
Check tyre pressures then restart Run
Flat Indicator......................................... 463
Clutch overheated Avoid pulling away
until thewa rning goes out...................... 434
Cruise control and Limiter inoperative.... 441
Cruise control inoperative...................... 441
Cruise control o.................................... 442
Depress clutch fully tostart engine........ 434
Device de tected at diagnostics con-
nection See Owner's Manual................. .457
Drive system Malfunction Stop Switch
engine o............................................... 430
Drive system Malfunction Visit work-
shop ...................................................... 430
Fr ont-passenger airbag disabled See
Owner's Manual .................................... .405
Fr ont-passenger airbag enabled See
Owner's Manual .................................... .406 Hazard
warning lamps malfunctioning .... 413
Head-up display cur rently una vailable
See Owner's Manual.............................. 423
Head-up display inoperative ...................424
Limiter inoperative................................. 442
Limiter passive....................................... 442
N permanently active Risk of vehicle
ro lling....................................................4 32
Not possible tounlock charging cable
See Owner's Manual.............................. 416
Only elect ric drive available Power
limited................................................... 417
Only select Park (P) when vehicle is
stationary.............................................. 431
Pa rking Assist and PARKTRONIC inop-
erative See Owner's Manual................... 451
Pa rking lock inoperative Apply the
parking brake ........................................ .433
Place theke y in the mar ked space
See Owner's Manual.............................. 409 496 496
Index