2022 MERCEDES-BENZ E-CLASS CABRIOLET check engine

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions #
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
N O
OTE
TE Engine damage due toinsu1cient coolant #
Avoid long journe yswith insu1cient coolant. #
Add coolant (/ page 305). #
Have the engine cooling system checked at a quali/ed specialist workshop.
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. 390
390
Display messages and
warning/indicator lamps

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 304).
No tes on engine oil (/ page 365).428
428
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 304). #
Check the engine oil le vel.
No tes on engine oil (/ page 365).
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. 430 430
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 305). Display message
s andwarning/indicator lamps
435
435

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. 436
436
Display messages and
warning/indicator lamps

é
ATTENTION ASSIS T:Take a
break!.................................................... 400
: Automatic driving lights inoper-
ative...................................................... 380
Û Battery overheated Stop, every-
body out! Outdoors if possible ................ 419
Á Change key batteries .................... 376
J Check brake 0uid le vel.................. 399
5 Check eng. oil le v.when next
re fuelling ............................................... 428
ï Check trailer hitch lo ck(white
display message) .................................... 385
h Check tyre(s) ................................ 422
! Clean the fuel /lter....................... 391
J Close boot separator .................... 379
ÿ Coolant Stop vehicle Switch
engine o............................................... 390
! currently una vailable See Own-
er's Manual............................................4 12÷
currently una vailable See Own-
er's Manual............................................4 13
5 Engine oil le vel cannot be meas-
ured....................................................... 430
5 Engine oil le velRe duce oil le vel..... 429
5 Engine oil le velSt op vehicle
Switch engine o.................................... 429
5 Engine oil pressure Stop Switch
o. engine.............................................. 430
ä Fault Drive at max. 80 km/h ......... 410
6 Front leT malfunction Consult
wo rkshop (e xample)...............................3 73
_ Front leT seat backrest not
loc ked (e xamp le).................................... 388
& inoperative Battery low................. 384
& inoperative Refuel vehicle............. .384
& inoperative See Owner's Man........ 383
! inoperative See Owner's Manual.. .413
÷ inoperative See Owner's Manual.. .414
T inoperative See Owner's Manual.. .415 G
Inoperative................................... 416
: Intelligent Light System inopera-
tive........................................................ 381
Á Key being initialised Please wait.... 377
Á Key not de tected (red display
message).............................................. .377
Á Key not de tected (white display
message).............................................. .376
: LeT dipped beam (e xample).......... 380
6 LeT windowbag malfunction
Consult workshop (e xample).................. 373
¢ Lowe ring....................................... 411
: Malfunction See Owner's Man-
ual ......................................................... 380
ð Maximum speed exceeded ............ 403
Ø ................................................... .426
ç O.................................................4 02
ë O.................................................3 99
K Open/close soT top comple tely.... 379 Index
453 453

Ac
tive bonnet malfunction See Own-
er's Manual............................................ 387
Ac tive Brake Assist Functions cur-
re ntly limi ted See Owner's Manual .........415
Ac tive Brake Assist Functions limi ted
See Owner's Manual.............................. 416
Ac tive Distance Assist available again ..... 403
Ac tive Distance Assist cur rently
una vailable See Owner's Manual ............ 402
Ac tive Distance Assist inoperative.......... 402
Ac tive Lane Keeping Assist cur rently
una vailable See Owner's Manual ............ 407
Ac tive Lane Keeping Assist inoperative... 407
Ac tive Steering Assist cur rently
una vailable due tomultiple emer-
ge ncy stops........................................... 404
Ac tive Steering Assist cur rently
una vailable See Owner's Manual ............ 403
Ac tive Steering Assist inoperative...........4 03Ac
tive Stop-and-Go Assist cur rently
una vailable see Owner's Manual .............404
Ac tive Stop-and-Go Assist inoperative
See Owner's Manual.............................. 405
Ad aptive Highbeam Assist cur rently
una vailable See Owner's Manual ............ 382
Ad aptive Highbeam Assist inoperative ....3 82
Ad aptive Highbeam Assist Plus cur-
re ntly una vailable See Owner's Manual ... 382
Ad aptive Highbeam Assist Plus inop-
erative.................................................. .383
Apply brake todeselect Park (P) posi-
tion....................................................... .392
Apply brake toselect D or R ...................393
Apply brake toselect R .......................... 393
Au xiliary battery malfunction (red dis-
play message) ....................................... .395
Au xiliary battery malfunction (white
displ aymessage) .................................... 394
Beginning emer gency stop..................... 404 Blind Spot Assist cur
rently una vailable
See Owner's Manual.............................. 405
Blind Spot Assist inoperative.................. 406
Blind Spot Assist not available when
to wing a trailer See Owner's Manual ...... 406
Cann otstart engine See Owner's
Manual.......................................... 389, 420
Check brake pads See Owner's Man-
ual......................................................... 399
Check ty repressures then restart Run
Flat Indicator......................................... 425
Cruise control and Limiter inoperative.... 400
Cruise control inoperative...................... 400
Cruise control o....................................4 01
Device de tected at diagnostics con-
nection See Owner's Manual................. .417
Fr ont-passenger airbag disabled See
Owner's Manual .................................... .374
Fr ont-passenger airbag enabled See
Owner's Manual .................................... .374 Index
455 455

Haza
rdwa rning lamps malfunctioning .... 383
Head-up display cur rently una vailable
See Owner's Manual.............................. 386
Head-up display inoperative ...................386
Limiter inoperative................................. 401
Limiter passive....................................... 401
Mo tor can be star ted again .................... 420
N permanently active Risk of vehicle
ro lling....................................................3 93
Only select Park (P) when vehicle is
stationary.............................................. 392
Pa rking Assist and PARKTRONIC inop-
erative See Owner's Manual................... 412
Place theke y in the mar ked space
See Owner's Manual.............................. 378
PRE-SAFE inoperative See Owner's
Manual.................................................. 375
Re duce speed........................................ 424
Re versing not poss. Consult workshop ... 394 Risk of
vehicle rolling Driver door
open and transmission not in P .............. 393
Ru n Flat Indica tor inoperative................. 425
Speed limit (winter tyres) XXX km/h .......403
St op vehicle Lea veengine running
Wa itTransmission cooling ......................394
To shiT out of P or N,depress brake
and start engine.................................... .392
To switch o. the engine, press the
St art/ Stop button for at least 3 sec-
onds or 3 times...................................... 389
Tr a1c Sign Assist cur rently una vaila-
ble See Owner's Manual........................ 405
Tr a1c Sign Assist inoperative................. 405
Tr ansmission Malfunction Stop............... 394
Ty re press. monitor cur rently una vaila-
ble......................................................... 421
Ty re press. monitor inoperative .............. 421
Ty re press. monitor inoperative No
wheel sensors ........................................ 421 Ty
re pressure Check tyres ...................... 424
Ty re(s) ove rheated .................................. 423
Wi per malfunctioning .............................389
Wi thout changing gear, consult work-
shop ...................................................... 393
Displa Displa ying r
ying road names/house numbers
oad names/house numbers .......2 71
Dist Dist ance contr
ance contr ol ol,Active Distance Assist
DISTRONIC, DISTRONI C............................... 197
Dist
Dist ance w
ance w ar
arning
ning, Active Brake Assist.......... 208
DIS
DIS TR
TRONIC
ONIC
Ac tivating............................................... 200
Ac tive Distance Assist............................ 197
Deactivating variable limi ter.................. .200
Door
Door Additional door loc k................................. 79
Emer gency key......................................... 83
Opening (from the inside)......................... 80
Po we r closing function............................. 82
Unlocking (inside).................................... 80
Door contr
Door contr ol panel
ol panel
Seat operation......................................... 14 456
456
Index