warning light MERCEDES-BENZ E-CLASS CABRIOLET 2021 Repair 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 #
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 186). #
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
441
441

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
443
443

Opening dimensions.............................. 367
Boo
Boo t separ
t separ at
ator
or
Closing................................................... .87
Opening.................................................. .87
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..................................................... 365
Br
Br ak
ak e f
e f or
orce disce distr tribution
ibution
EBD (Elect ronic Brake forc e Distribu-
tion).......................................................1 88
Br
Br ak
ak es
es
ABS (Anti-lock Braking System).............. 185
Ac tive Brake Assist................................. 205
Ad aptive brake lights.............................. 190
BAS (Brake Assist System).................... .186
Driving tips............................................ 158
EBD (Electronic Brake forc e Distribu-
tion).......................................................1 88
HOLD function....................................... 188
Limited braking e.ect (salt-treated
ro ads)................................................... .158
Ne w/replaced brake linings/brake
discs...................................................... 156 Ru
nning-in no tes.................................... 156
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........................................... 332
To wing away.......................................... 328
Tr anspo rting theve hicle........................ .330
Wheel chang e........................................ 346
Br
Br ea kdo
eakdo wn
wn
see Flat tyre
Butt
Butt ons
ons
St eering wheel....................................... 249 C
C
Calls
Calls Mercedes me......................................... 277
Camera
Camera Information............................................ 183
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)............................................ 305
Car
Car -t
-to-X
o-X -Communication
-Communication
Displaying hazard warnings.................... 271
Care
Care 360° camera......................................... 311
Air-water duct........................................ 305
Automatic car wash.............................. .305
Carpet................................................... 312
Decorative foil........................................ 308
Display................................................... 312
Draught stop.......................................... 310
Exterior lighting...................................... 311
Fo lding draught stop.............................. 310
Head-up display..................................... 312
High-pressure cleaner............................3 06
Pa int...................................................... 307
Plastic trim............................................3 12
Re alwo od/trim elements..................... .312
Re versing camera..................................3 11
Ro of lining............................................. 312 Index
449 449

ç
O................................................ .401
ë O.................................................3 98
K Open/close soT top comple tely.... 378
! Parking brake See Owner's
Manual..................................................3 94
É Please reduce speed .................... .410
Ý Please wait 48 V battery charg-
ing......................................................... 418
h Rectify tyre pressure ..................... 421
Ø Re/ll AdBlue See Owner ’sMan-
ual ......................................................... 424
! Release parking brake ...................397
¸ Replace air cleaner ....................... 391
Á Replace key.................................. 375
8 Reser vefuel le vel.......................... 390
6 Restraint sys. malfunction Con-
sult workshop ....................................... .372
# See Owner's Manual..................... 416
K SoTtop lo wering........................... 377 K
SoTtop Operation only up to
60 km/h................................................ 377
Ù Steering malfunction Increased
ph ysical e.ort See Owner's Manual....... 385
Ù Steering malfunction Stop
immediately See Owner's Manual ........... 386
# Stop vehicle Lea veengine run-
ning ....................................................... 417
# Stop vehicle See Owner's Man-
ual......................................................... 417
É Stop vehicle Vehicle too low .......... 409
ç suspended .................................... 400
: Switch o. lights............................ 380
: Switch on headlamps .................... 380
á temp orarily una vailable Camera
view restric ted....................................... 408
¸ temp orarily una vailable Sensors
dirty....................................................... 407
Ø Top up AdBlue Emer gency op. in
XXX miles See Owner's Manual.............. 424 +
Top up coolant See Owner ’s
Manual.................................................. 389
¥ Top up washer 0uid...................... .388
! Turn on the ignition torelease
th e parking brake ................................... 397
d Vehicle is operational Switch o.
ignition before exiting............................. 383
É Vehicle rising Please wait.............. 410
É Vehicle rising ................................ 410
h Warning tyre defect....................... 421
h Wheel sensor(s) missing ................ 420
K While stationar y,apply the
brake before operating the soT top........ 377
Ø XX,X l Top up AdBlue Swit chon
ignition, wait 60 sec. or eng. start not
poss...................................................... 425
Ac tive Blind Spot Assist cur rently
una vailable See Owner's Manual ............ 405
Ac tive Blind Spot Assist inoperative........ 406 454 454
Index

Ignition
key
Ignition key
see Key
Immobiliser
Immobiliser .................................................... 95
Im
Im plied w
plied w arr
arranty
anty
Ve hicle..................................................... 34
In-Car
In-Car O1ce
O1ce
Fe atures................................................ 283
Indicat
Indicat or lamp
or lamp
see Warning/indicator lamp
Individual dr
Individual dr iv
ive pr
e pr ogr
ogram
am
Con/guring............................................ 166
Selecting............................................... 166
Inspection Inspection see ASS YST PLUS
Ins
Instr trument clust
ument clust er
er
Fu nction/no tes.............................. 247, 248
Ins
Ins tr
trument display
ument display
Fu nction/no tes...................................... 248
Instrument clus ter.................................... 10
Overview of displa ys............................... 251
Wa rning/indicator lamps........................ 429 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...................................... 247
Int
Int ellig
ellig ent Light Syst
ent Light Syst em
em
Ac tivating/deactivating.......................... 129
Ac tive headlamps................................... 128
Ad aptive Highbeam Assis t...................... 130
Ad aptive Highbeam Assist Plu s............... 131
Bad weather light................................... 129
City lighting........................................... .129
Cornering light....................................... 128
Fo g light (enhanced).............................. 129
Mo torw ay mode.................................... .129
Overview................................................ 128
Int
Int er erior lighting
ior lighting
Ad justing............................................... 133
Ambient lighting.................................... .133
Re ading lamp......................................... 133
Switch-o. delay time.............................. 134
Int
Int er
erior pr ot
ior pr otection
ection
Fu nction.................................................. 97
Priming/deactivating.............................. .97
Int
Int er
erne
ne t r
t radio
adio
see TuneIn Ionisation
Ionisation
Activating/deactivating (MBUX multi-
media system)....................................... 145
iPhone
iPhone ®
®
see Smartphone integ ration
ISOFIX c
ISOFIX c hild seat anc
hild seat anc hor
hor
Seats suitable for attaching...................... 62
ISOFIX c
ISOFIX c hild seat secur
hild seat secur ing syst
ing system
em
Fi tting...................................................... 63 J
J
Jack
Jack Declaration of conformity......................... 30
Storage location.................................... .345
Jum Jum p-st
p-st ar
art connection
t connection
General no tes....................................... .324 K
K
K
K e
ey
y
Ac oustic locking veri/cation signal.......... .75
Battery..................................................... 76
Deacti vating a function............................ 75
Emer gency key......................................... 76
Energy consum ption................................ 75 Index
461 461

Fu
nction overview.................................... 74
Ke yring attachment................................. 76
Problem................................................... 77
Unlocking setting..................................... 75
KEYLESS-GO KEYLESS-GO Deactivating a function............................ 75
Locking/unlocking theve hicle................. 79
Problem................................................... 79
Unlocking setting.................................... .75
Kic
Kic kdo kdo wn
wn
Using..................................................... 170
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..................................................... 265
Setting................................................... 265
Lev
Lev el contr
el control syst ol system
em
see AIR BODY CONTROL
Light adjus
Light adjus tment
tment
Low beam (driving abroad).................... .125
Light switch
Light switch
Overview................................................ 125
Lighting
Lighting see Interior lighting
see Lights
Lights Lights Active headlamps................................... 128
Ad aptive Highbeam Assis t...................... 130
Ad aptive Highbeam Assist Plu s............... 131
Au tomatic driving lights......................... .126
Bad weather light................................... 129
City lighting........................................... .129
Combination switc h............................... 127
Cornering light....................................... 128
Driving abroad (low beam light adjust-
ment)..................................................... 125
Fo g light (enhanced).............................. 129 Hazard
warning lights............................. 127
Headlamp 0ashing................................. 127
High beam............................................. 127
Intelligent Light System..........................1 28
Light switch........................................... 125
Low beam.............................................. 125
Mo torw ay mode.................................... .129
Pa rking lights......................................... 125
Re ar fog light......................................... 125
Re sponsibility for lighting systems.......... 125
Setting low beam................................... 133
Setting theex terior lighting switch-o.
delay time.............................................. 133
St anding lights....................................... 125
Switching the Intelligent Light System
on/o....................................................1 29
Switching the sur round lighting on/o.... 133
Tu rn signal indicator............................... 127
Limit
Limit er er
Ac tivating............................................... 193
Buttons.................................................. 193
Calling up a speed................................. 193
Deactivating........................................... 193
Fu nction................................................ 192
Pa ssive mode......................................... 192 462 462
Index

W
W
ar
ar ning syst
ning syst em
em
see ATA (anti-theT alarm system)
W
W ar
ar ning tr
ning tr iangle
iangle
Re moving............................................... 315
Setting up.............................................. 316
W
W ar
ar ning/indicat
ning/indicat or lamp
or lamp
! ABSwarning lamp......................... 440
Ó Active Brake Assist warning lam p..4 39
J Brake system warning lamp (red)... 438
J Brake system warning lamp (yel-
low)....................................................... 437
ÿ Coolant warning lamp (red)........... 433
ÿ Coolant warning lamp (yellow).......4 35
! Electric parking brake indicator
lamp (red).............................................. 437
# Electrical fault warning lam p......... 436
; Engine diagnosis warning lamp...... 435
å ESP®
OFF warning lam p................ 442
÷ ESP®
wa rning lamp 0ashes........... 441
÷ ESP®
wa rning lamp lights up......... 441 8
Fuelreser vewarning lamp lights
up.......................................................... 436
Ù Powe r steering warning lamp
(red)...................................................... 432
6 Restraint system warning lam p...... 431
ü Seat belt warning lamp 0ashes...... 431
ü Seat belt warning lamp lights up.... 432
ä Suspension warning lamp (yel-
low)....................................................... 440
! The electric parking brake (yel-
low) indicator lam p................................. 437
ï Trailer tow hitch warning lam p....... 433
h Tyre pressure monitoring sys-
te m wa rning lamp 0ashes....................... 443
h Tyre pressure monitoring sys-
te m wa rning lamp lights up.................... 443
L Warning lamp for distance
wa rning function.................................... 439
Overview................................................ 429
PA SSENGER AIR BA G............................... 50 W
W arr arr anty
anty........................................................ 34
W
W asher
asher 0uid
0uid
see Windsc reen washer 0uid
W
W ashing b
ashing b y hand (car
y hand (car e)
e)................................ 307
W
W at
at er t
er t ank
ank
see Air-water duct
W
W eat
eat her inf
her inf or
ormation
mation..................................... 271
W
W eb br ow
eb br owsers
sers
Overview................................................ 284
Wheel c
Wheel c hange
hange
Fi tting a new wheel................................ 349
Lo we ring theve hicle.............................. 350
Preparation............................................ 346
Ra ising theve hicle................................. 347
Re moving a wheel................................. .349
Re moving//tting hub caps..................... 346
Wheel c
Wheel c hange hange
see Emer gency spa rewheel
Wheel rot
Wheel rotation
ation ............................................. 344
Wheels
Wheels Care..................................................... .311
Checking............................................... 336 476
476
Index