check engine MERCEDES-BENZ E-CLASS COUPE 2022 User Guide

V
V
ehicle
ehicle Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/conseq uences and
uences andM
MSolutions
Solutions
d
Vehicle is operational
Switch off ignition before
exiting *Y
ou are leaving theve hicle in a ready-to-drive state. #
Get out of theve hicle, secure it against rolling away and take theke y with you. #
Ifyo u do not lea vetheve hicle, switch o. the electrical consumers, e.g. the seat heating. Otherwise, the 12‑V bat-
te ry may dischar geand starting the engine may be possible only with the help of a second battery (jump start).
ï
Check trailer hitch
lock (white display message) *T
he trailer hitch is not operational during a jou rney with a trailer. &
W WARNING
ARNING 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 tra1c conditions. Do not continue driving. #
Uncouple the trailer and secure it against rolling away. #
Initiate a new swivelling procedu reand do not re-couple the trailer until the display message disappears. #
Initiate a new swivel mo vement (/ page 245). #
When the display message disappears, couple up the trailer and drive on.
If th e display message does not disappear, the trailer hitch is malfunctioning and the ball neck is not loc ked. 386
386
Display messages and
warning/indicator lamps

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 the Start/Stop but-
ton 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 158).
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 310). #
Have the engine cooling system checked at a quali/ed specialist workshop. Displ
aymessages and warning/indicator lamps
391
391

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
¯
AdBlue system fault Engine
start not possible *
The AdBlue ®
system is malfunctioning. You can no longer start theve hicle. #
Consult a quali/ed specialist workshop immediatel y.Engine oil Engine oil
Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
5
Check eng. oil lev. when
next refuelling *T
he engine oil le vel has dropped tothe minimum le vel.
* N
NO OTE TE Engine damage caused bydriving with insu1cient engine oil #
Avoid long journe yswith insu1cient engine oil. #
Check the engine oil le vel when next refuelling.
To p up the engine oil (/ page 309).
No tes on engine oil (/ page 368).430
430
Displ
aymessages and warning/indicator lamps

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions #
Add 1 l of engine oil (/ page 309). #
Check the engine oil le vel.
No tes on engine oil (/ page 368).
5
Engine oil pressure Stop
Switch off engine *T
he oil pressure is too lo w.
* N
NO
OTE
TE Engine damage caused bydriving with insu1cient oil pressure #
Avoid driving with insu1cient oil pressure. #
Stop theve hicle immediately in accordance with the tra1c conditions. Do not continue driving. #
Switch o. theve hicle. #
Consult a quali/ed specialist workshop.
5
Engine oil level cannot be
measured *T
he elect rical connection tothe oil le vel sensor has been inter rupted or the oil le vel sensor is faulty. #
Consult a quali/ed speciali stwo rkshop. 432 432
Displ
aymessages 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
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 310). Display message
s andwarning/indicator lamps
437
437

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. 438
438
Display messages and
warning/indicator lamps

Impor
ter addresses.................................. 31
Jack......................................................... 32
Speci/c absor ption rate........................... 25
TIREFIT kit................................................ 32
Wi reless vehicle component s................... 25
Decor Decor ativ
ative f
e foil
oil.............................................. 314
DeN DeNOx ag Ox ag ent ent
Ad Blue ®
................................................ .178
Des
Destination entry tination entry......................................... 275
Det
Det ecting inatt
ecting inatt entiv
entiveness
eness,
AT TENTION ASSIST..................................... .195
Diagnos
Diagnostics connection tics connection .................................. 33
Diesel
Diesel
Low outside temp eratures...................... 366
Digit
Digit al Owner's Manual
al Owner's Manual .................................. 18
DIRECT SELECT lev
DIRECT SELECT lev er
er
Au tomatic transmission.......................... 171
Engaging neut ral.................................... 172
Engaging park position automaticall y...... 172
Engaging park position manuall y............ 172
Engaging reve rsege ar............................ 172
Fu nction................................................ 171
Gea rshiT recommendation..................... 174 Manual
gearshiTing................................ 173
Displ ay
Display
Care......................................................3 17
Home screen......................................... 260
Displa
Displa y (on-boar
y (on-boar d com
d comput
puter)
er)
Displa yson the inst rument displa y......... 255
Displa
Displa y message
y message
Calling up in the on-board computer....... 375
Displa
Displa y messag
y messag es
es
ç - - - km/h..................................... 403
È - - - km/h..................................... 402
h - - - km/h..................................... 402
# 12 V battery See Owner's Man-
ual......................................................... 419
Û 48 V battery See Owner's Man-
ual......................................................... 421
: Active Light System inoperative..... 382
¯ AdBlue system fault Emer. op.:
max. XXX km/h Start not poss. in
XXX km.................................................. 429 ¯
AdBlue system fault Emer gency
op. in XXX miles See Owner's Manual.... 429
¯ AdBlue system fault Engine
start not possible................................... 430
¯ AdBlue system fault See Own-
er's Manual............................................ 429
5 Add 1 litre engine oil when next
re fuelling ............................................... 431
é ATTENTION ASSIST inoperati ve..... 401
é ATTENTION ASSIS T:Take a
break!.................................................... 401
: Automatic driving lights inoper-
ative...................................................... 382
Û Battery overheated Stop, every-
body out! Outdoors if possible ................ 421
Á Change key batteries .................... 379
J Check brake 0uid le vel.................. 400
5 Check eng. oil le v.when next
re fuelling ............................................... 430 454 454
Ind
ex

ï
Check trailer hitch lock (white
display message) .................................... 386
h Check tyre(s) ................................ 424
! Clean the fuel /lter....................... 393
ÿ Coolant Stop vehicle Switch
engine o............................................... 392
! currently una vailable See Own-
er's Manual............................................4 14
÷ currently una vailable See Own-
er's Manual............................................4 15
5 Engine oil le vel cannot be meas-
ured....................................................... 432
5 Engine oil le velRe duce oil le vel..... 431
5 Engine oil le velSt op vehicle
Switch engine o.................................... 431
5 Engine oil pressure Stop Switch
o. engine.............................................. 432
ä Fault Drive at max. 80 km/h ......... 412
6 Front leT malfunction Consult
wo rkshop (e xample)...............................3 76_
Front leT seat backrest not
loc ked (e xamp le).................................... 390
& inoperative Battery low................. 385
& inoperative Refuel vehicle............. .385
& inoperative See Owner's Man........ 385
! inoperative See Owner's Manual.. .415
÷ inoperative See Owner's Manual.. .416
T inoperative See Owner's Manual.. .417
G Inoperative................................... 418
: Intelligent Light System inopera-
tive........................................................ 383
Á Key being initialised Please wait.... 380
Á Key not de tected (red display
message).............................................. .380
Á Key not de tected (white display
message).............................................. .379
: LeT dipped beam (e xample).......... 381
6 LeT windowbag malfunction
Consult workshop (e xample).................. 376
¢ Lowe ring....................................... 413 :
Malfunction See Owner's Man-
ual ......................................................... 381
ð Maximum speed exceeded ............ 404
Ø ................................................... .428
ç O.................................................4 03
ë O.................................................4 01
! Parking brake See Owner's
Manual..................................................3 97
É Please reduce speed .................... .413
Ý Please wait 48 V battery charg-
ing......................................................... 422
h Rectify tyre pressure ..................... 424
Ø Re/ll AdBlue See Owner ’sMan-
ual ......................................................... 427
! Release parking brake ...................399
¸ Replace air cleaner ....................... 393
Á Replace key.................................. 379
8 Reser vefuel le vel.......................... 393
6 Restraint sys. malfunction Con-
sult workshop ....................................... .376 Index
455 455

Ac
tive Stop-and-Go Assist cur rently
una vailable see Owner's Manual .............406
Ac tive Stop-and-Go Assist inoperative
See Owner's Manual.............................. 406
Ad aptive Highbeam Assist cur rently
una vailable See Owner's Manual ............ 383
Ad aptive Highbeam Assist inoperative ....3 83
Ad aptive Highbeam Assist Plus cur-
re ntly una vailable See Owner's Manual ... 384
Ad aptive Highbeam Assist Plus inop-
erative.................................................. .384
Apply brake todeselect Park (P) posi-
tion....................................................... .394
Apply brake toselect D or R ...................394
Apply brake toselect R .......................... 394
Au xiliary battery malfunction (red dis-
play message) ....................................... .396
Au xiliary battery malfunction (white
displ aymessage) .................................... 396
Beginning emer gency stop..................... 405 Blind Spot Assist cur
rently una vailable
See Owner's Manual.............................. 407
Blind Spot Assist inoperative.................. 407
Blind Spot Assist not available when
to wing a trailer See Owner's Manual ...... 408
Cann otstart engine See Owner's
Manual.......................................... 391, 422
Check brake pads See Owner's Man-
ual......................................................... 400
Check ty repressures then restart Run
Flat Indicator......................................... 427
Cruise control and Limiter inoperative.... 402
Cruise control inoperative...................... 402
Cruise control o....................................4 02
Device de tected at diagnostics con-
nection See Owner's Manual................. .419
Fr ont-passenger airbag disabled See
Owner's Manual .................................... .377
Fr ont-passenger airbag enabled See
Owner's Manual .................................... .377 Hazard
warning lamps malfunctioning .... 384
Head-up display cur rently una vailable
See Owner's Manual.............................. 387
Head-up display inoperative ...................388
Limiter inoperative................................. 402
Limiter passive....................................... 402
Mo tor can be star ted again .................... 422
N permanently active Risk of vehicle
ro lling....................................................3 95
Only select Park (P) when vehicle is
stationary.............................................. 393
Pa rking Assist and PARKTRONIC inop-
erative See Owner's Manual................... 414
Place theke y in the mar ked space
See Owner's Manual.............................. 381
PRE-SAFE inoperative See Owner's
Manual.................................................. 378
Re duce speed........................................ 426
Re versing not poss. Consult workshop ... 395 Index
457 457

Risk of
vehicle rolling Driver door
open and transmission not in P .............. 394
Ru n Flat Indica tor inoperative................. 427
Speed limit (winter tyres) XXX km/h ....... 404
St op vehicle Lea veengine running
Wa itTransmission cooling ......................396
To shiT out of P or N,depress brake
and start engine.................................... .394
To switch o. the engine, press the
St art/ Stop button for at least 3 sec-
onds or 3 times...................................... 391
Tr a1c Sign Assist cur rently una vaila-
ble See Owner's Manual........................ 407
Tr a1c Sign Assist inoperative................. 407
Tr ansmission Malfunction Stop............... 395
Ty re press. monitor cur rently una vaila-
ble......................................................... 423
Ty re press. monitor inoperative .............. 423
Ty re press. monitor inoperative No
wheel sensors ........................................ 423 Ty
re pressure Check tyres ...................... 426
Ty re(s) ove rheated .................................. 425
Wi per malfunctioning .............................390
Wi thout changing gear, consult work-
shop ...................................................... 395
Displa
Displa ying r ying road names/house numbers
oad names/house numbers .......2 76
Dist Dist ance contr ance contr ol
ol,Active Distance Assist
DISTRONIC, DISTRONI C............................... 200
Dist
Dist ance w
ance w ar
arning
ning, Active Brake Assist.......... 210
DIS
DIS TR
TRONIC
ONIC
Ac tivating............................................... 202
Ac tive Distance Assist............................ 200
Deactivating variable limi ter.................. .202
Door
Door Additional door loc k................................. 78
Emer gency key......................................... 82
Opening (from the inside)......................... 79
Po we r closing function............................. 81
Unlocking (inside).................................... 79
Door contr
Door contr ol panel
ol panel
Seat operation......................................... 14 Double pulse
Double pulse
Accelerator pedal................................... 174
Dr
Dr iv
ive Awa
e Away Assi st
y Assi st........................................ .240
Dr
Dr iv
ive position
e position
DIRECT SELECT le ver............................. 173
Engaging................................................ 173
Dr
Dr iv
ive pr
e pr ogr
ogr am display
am display .................................. 170
Dr
Dr iv
iver's display
er's display
Head-up display..................................... 255
Dr
Dr iv
iver's seat
er's seat
Ad justing electrically.............................. 103
Ad justing manually and electrically
...................................................... 100, 102
Easy entry and exitfeatur e..................... 113
Seat heating.......................................... 108
Dr Dr iving abr
iving abroad oad
Light adjustment low beam.................... 129
Dr
Dr iving safe
iving safe ty syst
ty system
em, Assistance sys-
te ms, Driving system, Saf ety sy stems
Ac tive Blind Spot Assist.......................... 216
Ac tive Brake Assist................................. 210
Ad aptive brake lights.............................. 195
AIR BODY CONTROL............................. .222
AT TENTION ASSIST................................ 195 458
458
Ind
ex