warning light MERCEDES-BENZ E-CLASS COUPE 2021 Repair Manual

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
ü
Seat belt warning lamp
lights up *T
he red seat belt warning lamp lights up once theve hicle has star ted.
In addition, an intermittent warning tone may sound.
The red seat belt warning lamp reminds the driver and front passenger tofasten their seat belts. #
Fasten your seat belt (/ page 44).
If yo u ha veplaced objects on the front passenger seat, there d seat belt warning lamp may remain lit. V
V
ehicle
ehicle W
W
ar
ar ning/indicat
ning/indicat or lampP
or lam pP ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
Ù
Po we r steering warning
lamp (red) *T
he red po wer steering warning lamp is lit while theve hicle is running.
The po wer assistance or the steering itself is malfunctioning. &
W
WARNING
ARNING Risk of accident if steering capability is impaired
If th e steering does not function as intended, theve hicle's operating saf ety is jeopardised. #
Pull over and stop theve hicle safely as soon as possible, paying attention toroad and tra1c conditions. Do not
continue driving under any circums tances. #
Consult a quali/ed speciali stwo rkshop. #
Notethe messages on the instrument displa y.430
430
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
#
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.
8
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. 434
434
Display messages and
warning/indicator lamps

Dr
Dr
iving syst
iving syst ems
ems W
W
ar
ar ning/indicat
ning/indicat or lampP
or lam pP ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
L
Wa rning lamp for distance
wa rning function *T
he red distance warning lamp lights up while theve hicle is in motion.
The dis tance totheve hicle in front is too small forth e speed selected.
If th ere is an additional warning tone, you are approaching an obstacle at too high a speed. #
Be prepared tobrake immediatel y. #
Increase the distance.
Fu nction of Active Brake Assist (/ page 207).
Ó Ac tive Brake Assist warning
lamp *T
heActive Brake Assist warning lamp is on.
Due todirty sensors or a malfunction, the system is not available or thera nge of functions is restric ted. #
Notethe messages on the instrument displa y.
ê
Ac tive Brake Assist warning
lamp *T
heActive Brake Assist warning lamp is on.
The system is switched o. or thera nge of functions has been automatically restric ted.
This may be the case if the driver is not wearing a seat belt or ano ther driving system has been activated. #
Obser vethe no tes on Active Brake Assist (/ page 207). Display messages and
warning/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 #
Drive on carefull y. #
Have the brake system checked immediately at a quali/ed specialist workshop. ÷
ESP ®
wa rning lamp 0ashes *
The yellow ESP ®
wa rning lamp 0ashes while theve hicle is in motion.
One or more wheels ha vereached their grip limit (/ page 187). #
Adapt your driving style tosuit thero ad and weather conditions.
÷ ESP ®
wa rning lamp lights up *
The yellow ESP ®
wa rning lamp is lit while theve hicle is running.
ESP ®
is malfunctioning.
Other driving systems and driving sa fety systems (e.g. BAS) may also be malfunctioning. #
Notethe messages on the instrument displa y. &
W
W ARNI NG
ARNI NGRisk of skidding if ESP ®
is malfunctioning
If ESP ®
is malfunctioning, ESP ®
cannot carr y outvehicle stabilisation. In addition, other driving saf ety sy stems are
swit ched o.. #
Drive on carefull y. #
Have ESP ®
ch ecked at a quali/ed specialist workshop. Displ
aymessages and warning/indicator lamps
439
439

T
T
yr
yr e pr
e pr essur
essur e monit
e monit or
or W
W
ar
ar ning/indicat
ning/indicat or lampP
or lam pP ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
h
Ty re pressure monitoring
system warning lamp 0ashes *The
yellow tyre pressure monitor warning lamp (pressure loss/malfunction) 0ashes for appr oximately one minute and
th en remains lit.
The tyre pressure monitor is malfunctioning. &
W
WARNING
ARNING There is a risk of an accident if the tyre pressure monitoring system is malfunctioning
The tyre pressure monitoring system cannot issue a warning if there is pressure loss in one or more of the tyres.
Ty res with insu1cient tyre pressure may impair the driving characteristics as well as steering and braking. #
Have the tyre pressure monitoring system checked at a quali/ed specialist workshop. h
Ty re pressure monitoring
system warning lamp lights
up *T
he yellow tyre pressure monitoring system warning lamp (pressure loss/malfunction) is lit.
The tyre pressure monitoring system has de tected tyre pressure loss in at least one of the tyres. &
W
W ARNING
ARNING Risk of an accident due toinsu1cient tyre pressure
R The tyres can burst.
R The tyres can wearexcessively and/or une venly.
R The driving characteristics as well as the steering and braking may be greatly impaired.
Yo u could then lose control of theve hicle. #
Obser vethere commended tyre pressures. #
Adjust the tyre pressure if necessar y. Display messages and
warning/indicator lamps
441
441

Br
Br
ak
ak e
e 0uid
0uid
No tes..................................................... 366
Br
Br ak
ak e f
e f or
orce disce distr tribution
ibution
EBD (Elect ronic Brake forc e Distribu-
tion).......................................................1 89
Br
Br ak
ak es
es
ABS (Anti-lock Braking System).............. 187
Ac tive Brake Assist................................. 207
Ad aptive brake lights.............................. 191
BAS (Brake Assist System).................... .187
Driving tips............................................ 159
EBD (Electronic Brake forc e Distribu-
tion).......................................................1 89
HOLD function....................................... 190
Limited braking e.ect (salt-treated
ro ads)................................................... .159
Ne w/replaced brake linings/brake
discs...................................................... 157
Ru nning-in no tes.................................... 157
Br
Br aking assist aking assist ance
ance
see BAS (Brake Assist System)
Br
Br eakdo
eakdo wn
wn
Overvi ewofthe help functions................. 16
To w- starting........................................... 333 To
wing away.......................................... 329
Tr anspo rting theve hicle........................ .331
Wheel chang e........................................ 347
Br
Br ea kdo
eakdo wn
wn
see Flat tyre
Butt
Butt ons
ons
St eering wheel....................................... 250 C
C
Calls
Calls Mercedes me......................................... 281
Camera
Camera Information............................................ 185
Camera
Camera see 360° Camera
see Dashcam
see Reversing camera
Car key
Car key
see Key
Car w Car w ash
ash
see Care
Car w
Car w ash (car
ash (car e)
e)............................................ 309 Car
Car
-t
-to-X
o-X -Communication
-Communication
Displaying hazard warnings.................... 275
Care
Care 360° camera......................................... 312
Air-water duct........................................ 309
Automatic car wash.............................. .309
Carpet................................................... 314
Decorative foil........................................ 311
Display................................................... 314
Exterior lighting...................................... 312
Head-up display..................................... 314
High-pressure cleaner............................3 10
Pa int...................................................... 311
Plastic trim............................................3 14
Re alwo od/trim elements..................... .314
Re versing camera..................................3 12
Ro of lining............................................. 314
Seat belt................................................ 314
Seat co ver............................................. 314
Sensors.................................................3 12
St eering wheel....................................... 314
Ta ilpipes................................................ 312
Tr ailer hitch........................................... .312
Wa shing byhand.................................... 311
Wheels/rims.......................................... 312 Index
447 447

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

Hazar
Hazar
d w
d w ar
arning lights
ning lights................................... 128
Head r
Head r es
estrtraint
aint
Fr ont (adjusting mechanically)................ 102
Re ar (adjusting)..................................... .103
Head space heating (AIRSC
Head space heating (AIRSC ARF)
ARF)................... 108
Head-up display
Head-up display Adjusting brightness (on-board com-
puter).................................................... 253
Ad justing display elements (on-board
co mp uter).............................................. 253
Care...................................................... 314
Fu nction................................................ 252
Menu (on-boa rdcomputer)..................... 253
Operating the memory function.............. 113
Setting the position (on-board com-
puter).................................................... 253
Switching on/o.....................................2 54
Headlam
Headlam p
p0ashing
0ashing ........................................ 128
Headlam
Headlam ps
ps
see Automatic driving lights
Heating
Heating see Climate control
Help call
Help call see Mercedes-Benz emer gency call system High beam
High beam
Activating/deactivating.......................... 128
High beam
High beam see Adaptive Highbeam Assist
see Adaptive Highbeam Assist Plus
High-pr
High-pr essur
essure cleaner (car
e cleaner (car e)
e)........................ 310
Hill St
Hill Star
art Assist
t Assist............................................ 191
HOLD function
HOLD function Function/no tes...................................... 190
Switching on/o..................................... 190
Home scr
Home scr een (media displa
een (media displa y)
y)
Overview................................................ 257
Hooking t
Hooking t he lugg
he luggag
age net
e net.............................. .120 I
I
i-Size c
i-Size c hild seat secur
hild seat secur ing syst
ing system
em
Fi tting...................................................... 62
Seats suitable for attaching...................... 62
Identi/cation
Identi/cation plate
plate
Engine................................................... 357
Ve hicle.................................................. 357
Ignition key
Ignition key
see Key Immobiliser Immobiliser
.................................................... 94
Im
Im plied w
plied w arr
arranty
anty
Ve hicle..................................................... 34
In-Car
In-Car O1ce
O1ce
Fe atures................................................ 287
Indicat
Indicat or lamp
or lamp
see Warning/indicator lamp
Individual dr
Individual dr iv
iv e pr
e pr ogr
ogram
am
Con/guring............................................ 167
Selecting............................................... 167
Inspection
Inspection see ASS YST PLUS
Ins
Instr trument clust
ument clust er
er
Fu nction/no tes.............................. 248, 249
Ins
Ins tr
trument display
ument display
Fu nction/no tes...................................... 249
Instrument clus ter.................................... 10
Overview of displa ys............................... 252
Wa rning/indicator lamps........................ 427
Ins
Instr trument displa
ument displa y and on-boar
y and on-boar d com-
d com-
put
put er
er
Fu nction/no tes...................................... 248 458
458
Index

Int
Int
ellig
ellig ent Light Syst
ent Light Syst em
em
Ac tivating/deactivating.......................... 130
Ac tive headlamps................................... 129
Ad aptive Highbeam Assis t...................... 131
Ad aptive Highbeam Assist Plu s............... 132
Bad weather light................................... 130
City lighting........................................... .130
Cornering light....................................... 129
Fo g light (enhanced).............................. 130
Mo torw ay mode.................................... .130
Overview................................................ 129
Int
Int er
er ior lighting ior lighting
Ad justing............................................... 134
Ambient lighting.................................... .135
Re ading lamp......................................... 134
Switch-o. delay time.............................. 135
Int
Int er
erior pr ot
ior pr otection
ection
Fu nction.................................................. 95
Priming/deactivating.............................. .96
Int
Int er
erne
ne t r
t radio
adio
see TuneIn
Ionisation
Ionisation Activating/deactivating (MBUX multi-
media system)....................................... 146 iPhone
iPhone
®
®
see Smartphone integ ration
ISOFIX c
ISOFIX c hild seat anc
hild seat anc hor
hor
Seats suitable for attaching...................... 61
ISOFIX c
ISOFIX c hild seat secur
hild seat secur ing syst
ing system
em
Fi tting...................................................... 62 J
J
Jack
Jack
Declaration of conformity......................... 30
Storage location.................................... .346
Jum Jum p-st
p-st ar
art connection
t connection
General no tes....................................... .325 K
K
K
K e
e y
y
Ac oustic locking veri/cation signal.......... .74
Battery..................................................... 75
Deacti vating a function............................ 74
Emer gency key......................................... 75
Energy consum ption................................ 74
Fu nction overview.................................... 73
Ke yring attachment................................. 75
Problem................................................... 76 Unlocking setting..................................... 74
KEYLESS-GO
KEYLESS-GO
Deactivating a function............................ 74
Locking/unlocking theve hicle................. 78
Problem................................................... 78
Unlocking setting.................................... .74
Kic
Kic kdo kdo wn
wn
Using..................................................... 171
Knee airbag
Knee airbag.................................................... 46 L
L
Lamp
Lamp see Interior lighting
Lam
Lam p (ins
p (instr trument displa
ument displa y)
y)
see Warning/indicator lamp
Lane det
Lane det ection (aut
ection (aut omatic)
omatic)
see Active Lane Keeping Assist
Lane K
Lane K eeping Assist
eeping Assist
see Active Lane Keeping Assist
Language
Language Notes..................................................... 269
Setting................................................... 269 Index
459
459