engine MERCEDES-BENZ CLA COUPE 2021 Owners Manual

W
W
ar
ar ning/indicat
ning/indicat or lampP
or lam pP ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions #
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
Coolant warning lamp (yel-
low) *T
he yellow coolant warning lamp is lit while the engine is running.
Po ssible causes:
R The temp erature sensor is malfunctioning
R The charge air, transmission oil or battery cooling is faulty
R The radiator shutters are bloc ked or defective #
Avoiding high loads on the engine, drive tothe nearest quali/ed specialist workshop.
; 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. 476
476
Display messages and
warning/indicator lamps

W
W
ar
ar ning/indicat
ning/indicat or lampP
or lam pP ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
#
Electrical fault warning lamp *T
hered electrical fault warning lamp is lit.
There is a fault in the electrics. #
Notethe messages on the instrument displa y.
æ
Fu elreser vewarning lamp
lights up *T
he yellow fuel reser vewarning lamp lights up while the engine is running.
The fuel supply has dropped into there ser verange. #
Refuel. Display messages and
warning/indicator lamps
477
477

A
A
ctiv
ctiv e P
e Par
arking Assist
king Assist
Exiting a parking space.......................... 262
Fu nction................................................ 259
Pa rking.................................................. 260
System limitations..................................2 59
A
A ctiv
ctiv e Ser
e Ser vice Sy
vice Sy st
stem PL
em PL US
US
see ASS YST PLUS
A A ctiv ctiv e Speed Limit Assist
e Speed Limit Assist
Display................................................... 230
Fu nction................................................ 230
A
A ctiv
ctiv eSt
e St eer
eer ing Assist
ing Assist
Ac tivating/deactivating.......................... 234
Ac tive Emer gency Stop Assist................ 234
Fu nction................................................ 232
System limits......................................... 232
A
A dap
dap tiv
tive br
e br ak
ake lights
e lights .................................... 220
A
A dap
dap tiv
tive cr
e cr uise contr
uise contr ol
ol
see Active Distance Assist DISTRONIC
A
A dap
dap tiv
tive Highbeam Assist
e Highbeam Assist
Ac tivating/deactivating.......................... 136
Fu nction................................................ 135
A
A dap
dap tiv
tive Highbeam Assis
e Highbeam Assist Plus t Plus
Fu nction................................................ 136
Switching on/o..................................... 137 A
A dBlue
dBlue ®
®
Ad ditives................................................ 392
Capacity................................................ 393
No tes..................................................... 186
Purit y.................................................... .392
To pping up............................................ .186
A
A dditional door lock dditional door lock ....................................... 85
A
A dditiv
dditiv es
es
Ad Blue ®
................................................ .392
Engine oil............................................... 393
Fu el....................................................... 390
A
A dditiv
dditiv es (A
es (AdBlue
dBlue ®
®
)
)
see AdBlue ®
A
A dditiv
dditiv es (engine oil)
es (engine oil)
see Additives
A
A dditiv
dditiv es (fuel)
es (fuel)
see Fuel
A
A djus
djus ting t
ting t he headlam
he headlam p r
p range
ange ...................... 131
ATer
ATer -sales
-sales ser
service
vice
see ASS YST PLUS
Air conditioning menu
Air conditioning menu Calling up.............................................. 148 Air dis
Air distr
tribution
ibution
Setting................................................... 147
Setting (MBUX multimedia system)......... 149
Air inlet
Air inlet see Air-water duct
Air pr
Air pr essure
essure
see Tyre pressure
Air v
Air v ents
ents
Ad justing (front)..................................... 154
Ad justing (rear)...................................... 155
Air v
Air v ents
ents
see Air vents
Air
Air -conditioning syst
-conditioning syst em
em
see Climate cont rol
Air
Air -r
-recir
ecir culation mode (wit
culation mode (wit h
h/ne
/ne
par
par ticle
ticle pr
pre/lt
e/lt er)
er).......................................... 149
Air
Air -w
-wat
ater duct
er duct
Ke eping free.......................................... 334
Airbag
Airbag
Activation................................................ 47
Fr ont airbag (driver, front passenger)........ 53
Installation locations................................ 53
Knee airbag............................................. 53 486 486
Index

Overview.................................................
.53
PA SSENGER AIR BAG indicator la mps...... 57
Pr otection................................................ 54
Re duced pr otection.................................. 55
Side airbag.............................................. 53
Wi ndow airbag......................................... 53
Air0 ow
Air0ow
Setting................................................... 147
Alar
Alar m syst m syst em
em
see ATA (anti-theT alarm system)
All-wheel dr
All-wheel dr ive
ive
see 4M ATIC
Ambient lighting
Ambient lighting
Setting (MBUX multimedia system)........ .138
Andr
Andr oid A
oid A uto
uto
see Smartphone integ ration
Animals
Animals Pets in theve hicle.................................... 81
Anti-loc
Anti-loc k br
k braking syst
aking syst em
em
see ABS (Anti-lock Braking System)
Anti-skid c
Anti-skid c hains
hains
see Sn owchains Anti-t
Anti-theT
heTprot
pr otection
ection
Ad ditional door loc k................................. 85
Immobiliser............................................ 101
Anti-t
Anti-theT heTprot
pr otection
ection
see ATA (anti-theT alarm system)
Anticipat
Anticipat or
ory occupant pr ot
y occupant pr otection
ection
see PRE-SAFE ®
(anticipatory occu-
pant pr otection)
see PRE-SAFE ®
PLUS (anticipatory
occupant pr otection plus)
Apple CarPlay
Apple CarPlay ®
®
see Smartphone integ ration
Assist Assist ance syst ance syst ems
ems
see Driving saf ety sy stem
ASS YS
ASS YST PL
T PL US
US
Battery disconnection period s................ 328
Displaying the service due dat e.............. 327
Fu nction/no tes...................................... 327
Re gular maintenance work..................... 327
Special service requ irements................. 327
AT
ATA A(anti-t
(anti-theT heTalar
alarm syst
m syst em)
em)
Deactivating the alarm........................... 102
Fu nction................................................ 101
Interior pr otection function.....................1 03Priming/deactivating interior pr
otec-
tion........................................................ 103
Priming/deactivating tow- awa y pro-
te ction................................................... 102
To w- awa y protection function................. 102
A
A TTENTION ASSIST TTENTION ASSIST
Function................................................ 221
Setting.................................................. .223
System limitations.................................. 221
A A tt tt ention assist
ention assist ant
ant
see ATTENTION ASSIST
A
A ut
ut hor
hor ised w
ised w ork
orkshop
shop
see Quali/ed specialist workshop
A
A ut
ut omatic car w
omatic car w ash mode
ash mode
Ac tivating............................................... 336
A
A ut
ut omatic co-dr
omatic co-dr iv
iver airbag
er airbag shut
shuto.
o.
Fu nction of co-driver airbag shuto........... 56
A
A ut
ut omatic dist
omatic dist ance contr
ance control
ol
see Active Distance Assist DISTRONIC
A
A ut
ut omatic dr
omatic dr iving lights
iving lights ................................ 131
A
A ut
ut omatic engine st
omatic engine st art
art
see ECO start/stop function Index
487
487

A
A
ut
ut omatic engine st
omatic engine st op
op
see ECO start/s top function
A
A ut
ut omatic fr
omatic fr ont passeng
ont passeng er airbag
er airbagshut
shuto.
o.
PA SSENGER AIR BAG indicator la mps...... 57
A
A ut
ut omatic measur
omatic measur es
es aTer
aTer an accident
an accident ............ 61
A
A ut
ut omatic mirr
omatic mirr or f
or folding function
olding function
Ac tivating/deactivating.......................... 146
A
A ut
ut omatic tr
omatic tr ansmission
ansmission
DIRECT SELECT le ver............................. 177
Drive prog rams...................................... 172
DY NAMIC SELECT switch....................... 172
Engaging drive position.......................... 179
Engaging reve rsege ar............................ 178
Kickdown............................................... 180
Manual gear changing........................... .179
Selecting park position........................... 178
St eering wheel gearshiT paddles............ 179
Tr ansmission position displ ay................. 177
Tr ansmission position s........................... 177
A
A ut ut omatic tr
omatic tr ansmission (pr
ansmission (problem) oblem)
see Transmission (problem)
Axle load
Axle load Perm issible............................................ 386
Tr ailer operatio n..................................... 401 B
B
Ball neck
Ball neck Folding out/in........................................ 265
B
B AS (Br
AS (Br ak
ake Assis
e Assist Syst t System)
em)........................... 216
Batt
Batt ery
ery
see High-voltage battery
Batt
Batt er
ery (high-v
y (high-v olt
oltag
age on-boar
e on-boar d electr
d electrical
ical
syst
syst em)
em)
see High-voltage battery
Batt
Batt er
ery (ke
y (ke y)
y)
Re placing................................................. 84
Batt
Batt er
ery (v
y (v ehicle)
ehicle)
Charging (Remo teOnline)..................... .161
No tes..................................................... 350
No tes (starting assis tance and charg-
ing)........................................................ 352
Batt
Batt er
ery oper
y oper ation
ation......................................... 156
Belt
Belt see Seat belt
Bicy
Bicy cle r
cle r ack
ack
Load capacit y........................................ 400
Tr ailer operatio n.................................... .268 Blind Spo
Blind Spo t Assist
t Assist
Ac tivating/deactivating.......................... 246
Fu nction................................................ 243
System limi tations.................................. 243
Blow
Blow er
er
see Clima tecont rol
BlueTEC BlueTEC see AdBlue ®
Bonnet Bonnet Function (active bonnet)......................... 328
Opening/closing.................................... 329
Re setting (active bonn et)........................ 328
Boo Boo t lid
t lid
Closin g.................................................... 91
HANDS-FREE ACCESS............................. 92
Opening...................................................90
Br
Br ak
ak e Assis
e Assist Syst t System
em
see BAS (Brake Assist System)
Br
Br ak
ak e
e0uid
0uid
No tes..................................................... 395
Br
Br ak
ak e f
e f or
orce disce distr tribution
ibution
EBD (Elect ronic Brake forc e Distribu-
tion)....................................................... 218 488
488
Index

Cleaning
Cleaning
see Care
Cleaning
Cleaning 0uid
0uid
see windscreen washer 0uid
Climat
Climat e contr
e contr ol
ol
Ac tivating/deactivating.......................... 148
Ac tivating/deactivating the A/C func-
tion (MBUX multimedia system).............. 148
Ac tivating/deactivating the synchro-
nisation function (control panel).............1 49
Ac tivating/deactivating the synchro-
nisation function (MBUX multimedia
system).................................................. 149
Air-recirculation mode (with /ne parti-
cle pre/lter)...........................................1 49
Au tomatic control................................. .148
Calling up the air conditioning menu....... 148
Demisting the windscreen...................... 147
Demisting windo ws................................ 149
Fr ont air vents........................................ 154
Immediate pre-entry clima tecont rol....... 152
No te...................................................... 147
Pre-entry climate control at depa rture
time.......................................................1 50
Pre-entry climate control using theke y... 150 Re
ar air vents......................................... 155
Re sidual heat......................................... 149
Setting (MBUX multimedia system)......... 148
Setting the air distribution...................... 147
Setting the air0ow.................................. 147
Setting theve hicle interior temp era-
ture....................................................... 147
St ationary heater/ ventilation................. 152
Switching the A/C function on/o.
(control panel).......................................1 48
Switching there ar wind owheater
on/o.................................................... 147
THERM ATIC cont rol panel...................... 147
THERMOTRONIC control panel............... 147
Ve ntilating theve hicle (con venience
opening).................................................. 95
Co-dr
Co-dr iv iver airbag
er airbag shut
shut o.
o.
see Automatic co-driver airbag shuto.
Coc Coc kpit kpit
Overview.............................................. 6, 10
Co.ee
Co.ee cup symbol
cup symbol
see ATTENTION ASSIST
Collision det
Collision det ection (park
ection (parked v
ed vehicle)
ehicle)
Information............................................ 212 Combination switch
Combination switch
.................................... .132
Com
Com ponent-speci/c
ponent-speci/c inf
inf or
ormation
mation................... 385
Com
Com put
puter
er
see On-board computer
Conv
Conv enience closing
enience closing...................................... 96
Conv
Conv enience opening
enience opening..................................... 95
Coolant (engine)
Coolant (engine) Levelch eck............................................ 333
No tes..................................................... 395
Cooling
Cooling see Climate control
Cop
Cop yr
yright
ight....................................................... 45
Cor
Cor ner
nering light
ing light............................................. 134
Cr
Cr oss
oss tr
tra1c
a1c (w
(war
arning)
ning)
see Manoeuvring assis tance
Cr
Cr oss
oss Tr
Tra1c
a1c Alert
Alert........................................ 264
Cr
Cr osswind Assist
osswind Assist
Fu nction/no tes...................................... 217
Cr
Cr uise contr
uise contr ol
ol
Ac tivating............................................... 224
Buttons.................................................. 224
Calling up a speed................................. 224 Index
491 491

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

!
inoperative See Owner's Manual... 453
÷ inoperative See Owner's Manual... 454
T inoperative See Owner's Manual... 455
G Inoperative................................... 456
: Intelligent Light System inopera-
tive........................................................ 411
Á Key being initialised Please wait.... 408
Á Key not de tected (red display
message).............................................. .408
Á Key not de tected (white display
message).............................................. .408
: LeT dipped beam (e xample).......... 409
6 LeT windowbag malfunction
Consult workshop (e xample).................. 405
: Malfunction See Owner's Man-
ual.........................................................4 10
Û Malfunction Visit workshop ........... 419
d Malfunction.................................. 420
Û Malfunction.................................. 419
ð Maximum speed exceeded ............ 444 ç
O................................................. 443
ë O................................................. 440
! Parking brake See Owner's
Manual..................................................4 36
d Performance se verely limited........ 420
6 Please wait Depressurising tank .... 421
& Pre-entry clima tecont rol (via
ke y) available again aTer engine start..... 415
& Pre-ent ryclimate cont rol (via
ke y) inoperati veHV-battery low .............. 415
h Rectify tyre pressure ..................... 461
Ú Re/ll AdBlue See Owner ’sMan-
ual ......................................................... 464
! Release parking brake ...................438
¸ Replace air cleaner ....................... 430
Á Replace key.................................. 407
æ Reser vefuel le vel.......................... 430
6 Restraint sys. malfunction Con-
sult workshop ....................................... .403
# See Owner's Manual..................... 457 Ù
Steering malfunction Increased
ph ysical e.ort See Owner's Manual.......4 24
Ù Steering malfunction See Own-
er's Manual ............................................ 425
Ù Steering malfunction Stop
immediately See Owner's Manual ........... 424
d Stop Switch engine o.................. .420
# Stop vehicle Lea veengine run-
ning ....................................................... 459
# Stop vehicle See Owner's Man-
ual......................................................... 458
ç suspended .................................... 442
: Switch o. lights............................ 411
: Switch on headlamps .................... 411
6 Tank is dep ressurised Ready for
re fuelling ............................................... 421
6 Tank ventilation Malfunction
Consult workshop ................................. .421
á temp orarily una vailable Camera
view restric ted....................................... 450 494
494
Index

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

PRE-SAFE inoperati
veSee Owner's
Manual.................................................. 407
Re duce speed........................................ 462
Re duced drive system per form ance
See Owner's Manual.............................. 418
Re versing not poss. Consult workshop ... 432
Risk of vehicle rolling away App ly
parking brake See Owner's Manual ........ 434
Risk of vehicle rolling awayPa rking
brake not applied See Owner's Manual ... 439
Risk of vehicle rolling Driver door
open and transmission not in P .............. 432
Ru n Flat Indica tor inoperative................. 463
Speed limit (winter tyres) XXX km/h .......444
Speed Limit Assist cur rently una vaila-
ble See Owner's Manual........................ 444
Speed Limit Assist inoperative................ 444
Te aching in transmission comple te......... 434 Te
aching in transmission Operate
selector le ver Brake for XX seconds
Risk of vehicle rolling ............................. 433
To shiT out of P or N,depress brake
and start engine.................................... .431
To switch o. the engine, press the
St art/ Stop button for at least 3 sec-
onds or 3 times...................................... 428
Tr a1c Sign Assist cur rently una vaila-
ble See Owner's Manual........................ 446
Tr a1c Sign Assist inoperative................. 446
Tr ansmission Malfunction ....................... 433
Tr ansmission Malfunction Stop............... 432
Tr ansmission Malfunction Visit work-
shop ...................................................... 434
Ty re press. monitor cur rently una vaila-
ble......................................................... 459
Ty re press. monitor inoperative .............. 459
Ty re press. monitor inoperative No
wheel sensors ........................................ 460 Ty
re pressure Check tyres ...................... 462
Ty re(s) ove rheated .................................. 462
Ve hicle not cur rently being charged
Charging station fault............................. 417
Wi per malfunctioning .............................427
Wi thout changing gear, consult work-
shop ............................................. .419, 432
Wi thout starting engine again, consult
wo rkshop ............................................... 419
Dist
Dist ance contr ance contr ol
ol
see Active Distance Assist DISTRONIC
DIS
DIS TR
TR ONIC
ONIC
see Active Distance Assist DISTRONIC
Door
Door Additional door loc k................................. 85
Child saf ety lock (rear door )..................... 79
Locking/unlocking (emer gency key)........ .89
Opening (from inside).............................. .86
Unlo cking (from inside)............................ 86
Door contr
Door contr ol panel
ol panel......................................... 18
Dra
Dra wbar
wbar
see Tow- bar system Index
497
497