2021 MERCEDES-BENZ E-CLASS COUPE engine coolant

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions #
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.
8
Reserve fuel level *T
he fuel supply has dropped into there ser verange. #
Refuel.
! Clean the fuel filter *V
Vehicles wit
ehicles wit h diesel engines:
h diesel engines: the fuel /lter is dirty or thewa ter in the fuel /lter needs tobe drained. #
Consult a quali/ed specialist workshop. 388
388
Displ
aymessages and warning/indicator lamps

Ins
Ins
tr
trument displ ay
ument display Depending on
the display setting, the positions of
th e indicator lamps on the inst rument display may
di.er from theex ample shown.
Indicat
Indicat or and w
or and w ar
arning lam
ning lam ps:
ps:
6 Restraint system (/ page 429)
ü Seat belt (/ page 429)
ï Trailer hitch (/ page 430)
Ù Powe r steering (/ page 430)
ÿ Coolanttemp erature (/ page 431)
; Engine diagnostics (/ page 431)
% V
V ehicles wit
ehicles wit h a diesel engine:
h a diesel engine: preglow#
Electricalfault (/ page 431)
8 Reser vefuel wi thfuel /ller 0ap loca-
tion indicator (/ page 431)
! Electric parking brake (red)
(/page 435)
! Electric parking brake (yellow)
(/page 435)
J Brakes (yellow) (/ page 435)
J Brakes (red) (/ page 435)
L Distancewarning (/ page 437)
Ó Active Brake Assist (/ page 437)
ê Active Brake Assist (/ page 437)
ä AIR BODYCONTROL (/ page 437)
ä DYNAMIC BODY CONTROL
(/ page 437)
! ABS (/page 438)
÷ ESP®
(/ page 438)
å ESP®
OFF (/ page 438)
h Tyre pressure monitoring system
(/ page 441) T
Standing lights (/ page 126)
L Low beam (/ page 126)
K High beam (/ page 128)
#! Turn signal lights (/ page 128)
R Rear fog light (/ page 126) 428 428
Display message
s andwarning/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
ï
Tr ailer tow hitch warning
lamp *T
hered trailer hitch warning lamp is lit.
The trailer hitch is not operational. &
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 swivel mo vement and do not re-couple the trailer until thewa rning/indicator lamp goes out. #
Notethe messages on the instrument displa y.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 (red) *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 Display message
s andwarning/indicator lamps
431
431

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
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 307). 432
432
Display message
s andwarning/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 #
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. Display messages and
warning/indicator lamps
433
433

Re
sidual heat......................................... 146
Setting (MBUX multimedia system)......... 144
Setting the air distribution...................... 143
Setting the air0ow.................................. 143
Setting the climate style......................... 145
Setting the frag rance system.................. 146
Setting theve hicle interior temp era-
ture....................................................... 143
St ationary heater/ ventilation................. 148
Switching there ar wind owheater
on/o.................................................... 143
THERM ATIC cont rol panel...................... 143
THERMOTRONIC control panel............... 143
Ve ntilating theve hicle (con venience
opening).................................................. 88
Climat
Climat e s
e stytyle
le
Fu nction................................................ 145
Setting.................................................. .145
Co-dr
Co-dr iv
iver airbag
er airbag shut
shuto.
o.
see Automatic co-driver airbag shuto.
Coc
Coc kpit
kpit
Overview.................................................... 6
Co.ee
Co.ee cup symbol
cup symbol
see ATTENTION ASSIST Collision det
Collision det
ection (park
ection (parked v
ed vehicle)
ehicle)
Setting................................................... 183
Combination switch
Combination switch .................................... .128
Com
Com ponent-speci/c
ponent-speci/c inf
infor
ormation
mation................... 356
Com
Com put
puter
er
see On-board computer
Conv
Conv enience closing
enience closing...................................... 88
Conv
Conv enience opening
enience opening..................................... 88
Coolant (engine)
Coolant (engine) Levelch eck............................................ 307
No tes..................................................... 366
Cooling
Cooling
see Climate control
Cop
Cop yr
yright
ight....................................................... 38
Cor
Cor ner
nering light
ing light............................................. 129
Cr
Cr oss
oss tr
tra1c
a1c (w
(war
ar ning)
ning)
see Manoeuvring assis tance
Cr
Cr oss
oss Tr
Tra1c
a1c Alert
Alert........................................ 237
Cr
Cr osswind Assist
osswind Assist
Fu nction/no tes...................................... 188
Cr
Cr uise contr
uise contr ol
ol
Ac tivating............................................... 194 Buttons.................................................. 194
Calling up a speed................................. 194
Deactivating........................................... 194
Fu
nction................................................ 193
Re quirements:....................................... 194
Selecting............................................... 194
Setting a speed...................................... 194
St oring a speed...................................... 194
System limitations.................................. 193 D D
Dashboard
Dashboard see Cockpit
Dashcam
Dashcam Notes..................................................... 276
Selecting a USB device......................... .277
St arting/stopping a video recording...... .277
Dat
Dat a acq
a acq uisition
uisition
Ve hicle..................................................... 35
Dat
Dat a pr ot
a pr otection r
ection r ights
ights
Data storag e............................................ 38
Dat
Dat a st
a st or
orage
age
Data pr otection rights.............................. 38
Electronic control units............................ 35 Index
449
449

:
Automatic driving lights inoper-
ative...................................................... 377
Á Change key batteries .................... 375
J Check brake 0uid le vel.................. 396
5 Check eng. oil le v.when next
re fuelling ............................................... 425
ï Check trailer hitch lo ck(white
display message) .................................... 382
h Check tyre(s) ................................ 418
! Clean the fuel /lter....................... 388
ÿ Coolant Stop vehicle Switch
engine o............................................... 387
! currently una vailable See Own-
er's Manual............................................4 09
÷ currently una vailable See Own-
er's Manual............................................4 10
5 Engine oil le vel cannot be meas-
ured....................................................... 427
5 Engine oil le velRe duce oil le vel..... 426 5
Engine oil le velSt op vehicle
Switch engine o.................................... 426
5 Engine oil pressure Stop Switch
o. engine.............................................. 427
ä Fault Drive at max. 80 km/h ......... 407
6 Front leT malfunction Consult
wo rkshop (e xample)...............................3 72
_ Front leT seat backrest not
loc ked (e xamp le).................................... 385
& inoperative Battery low................. 381
& inoperative Refuel vehicle............. .381
& inoperative See Owner's Man........ 380
! inoperative See Owner's Manual.. .410
÷ inoperative See Owner's Manual.. .411
T inoperative See Owner's Manual.. .412
G Inoperative................................... 413
: Intelligent Light System inopera-
tive........................................................ 378
Á Key being initialised Please wait.... 376 Á
Key not de tected (red display
message).............................................. .376
Á Key not de tected (white display
message).............................................. .375
: LeT dipped beam (e xample).......... 377
6 LeT windowbag malfunction
Consult workshop (e xample).................. 372
¢ Lowe ring....................................... 408
: Malfunction See Owner's Man-
ual ......................................................... 377
ð Maximum speed exceeded ............ 400
Ø ................................................... .422
ç O.................................................3 99
ë O.................................................3 96
! Parking brake See Owner's
Manual..................................................3 92
É Please reduce speed .................... .408
Ý Please wait 48 V battery charg-
ing......................................................... 416
h Rectify tyre pressure ..................... 419 Index
451 451

Ø
Re/ll AdBlue See Owner ’sMan-
ual ......................................................... 422
! Release parking brake ...................395
¸ Replace air cleaner ....................... 389
Á Replace key.................................. 375
8 Reser vefuel le vel.......................... 388
6 Restraint sys. malfunction Con-
sult workshop ....................................... .372
# See Owner's Manual..................... 414
Ù Steering malfunction Increased
ph ysical e.ort See Owner's Manual....... 383
Ù Steering malfunction Stop
immediately See Owner's Manual ........... 384
# Stop vehicle Lea veengine run-
ning ....................................................... 415
# Stop vehicle See Owner's Man-
ual......................................................... 415
É Stop vehicle Vehicle too low .......... 407
ç suspended .................................... 398
: Switch o. lights............................ 378 :
Switch on headlamps .................... 378
á temp orarily una vailable Camera
view restric ted....................................... 406
¸ temp orarily una vailable Sensors
dirty....................................................... 405
Ø Top up AdBlue Emer gency op. in
XXX miles See Owner's Manual.............. 422
+ Top up coolant See Owner ’s
Manual.................................................. 387
¥ Top up washer 0uid...................... .386
! Turn on the ignition torelease
th e parking brake ................................... 395
d Vehicle is operational Switch o.
ignition before exiting............................. 381
É Vehicle rising Please wait.............. 408
É Vehicle rising ................................ 408
h Warning tyre defect....................... 419
h Wheel sensor(s) missing ................ 418Ø
XX,X l Top up AdBlue Swit chon
ignition, wait 60 sec. or eng. start not
poss...................................................... 423
Ac tive Blind Spot Assist cur rently
una vailable See Owner's Manual ............ 403
Ac tive Blind Spot Assist inoperative........ 404
Ac tive Blind Spot Assist not available
when towing a trailer See Owner's
Manual.................................................. 404
Ac tive bonnet malfunction See Own-
er's Manual............................................ 384
Ac tive Brake Assist Functions cur-
re ntly limi ted See Owner's Manual .........412
Ac tive Brake Assist Functions limited
See Owner's Manual.............................. 413
Ac tive Distance Assist available again ..... 400
Ac tive Distance Assist cur rently
una vailable See Owner's Manual ............ 399
Ac tive Distance Assist inoperative.......... 399 452 452
Index