light MERCEDES-BENZ C-CLASS COUPE 2021 Owners Manual

Display messages
Possible causes/consequences and M
MSolutions
5 Engine oil pressure Stop
Switch off engine *D
isplay message only for cer tain engines:
The oil pressure is too lo w.
* NO
TEEngine dama gecaused bydriving with insuf ficient oil pressure #
Avoid driving with insuf ficient oil pressure. #
Stop theve hicle immediately in accordance with the traf fic conditions. Do not continue driving. #
Switch off the engine. #
Consult a qualified specialist workshop.
5 Engine oil level cannot be
measured *T
he electrical connection tothe oil le vel sensor has been inter rupte d or the oil le vel sensor is faulty. #
Consult a qualified specialist workshop. Wa
rning and indicator lamps Overview of indicator and
warning lamps Some sy
stems will per form a self-test when the
ignition is switched on. Some indicator and wa
rning lamps may briefly light up or flash. This
behaviour is non-critical. These indicator and
wa rning lamps indicate a malfunction only if they
light up or flash af terth e engine has been star‐
te d or during a journe y. Displ
aymessa ges and warning/indicator lamps 487

Instrument display (standard)
Wi
descreen co ckpit instrument displ ay Depending on
the display setting, the positions
of the indicator lamps on the instrument display
may dif fer from theex ample shown.
Indicator and warning lamps:
6 Re
stra int sy stem (/ page 489)
ü Seat belt (/
page 489)
ï Trailer hit ch (/page 490)
Ù Powe rst eering (/ page 490)
ÿ Coolanttemp erature (/ page 491)
; Engine diagnostics (/
page 491)
% Ve
hicles with a diesel engine: pre‐
gl ow
# Electrical
fault (/ page 491)
8 Re
ser vefuel with fuel filler flap loca‐
tion indicator (/ page 491)
! Elect
ric pa rking brake (red)
(/ page 494)
! Electric parking brake (yellow)
(/
page 494)
J Brakes (yellow) (/
page 494)
J Brakes (red) (/
page 494) L
Distance warning (/ page 496)
ä AIRMATIC (/ page 496)
ä DYNA MIC BODY CONTROL
(/ page 496)
! ABS (/
page 497)
÷ ESP®
(/ page 497)
å ESP®
OFF (/ page 497)
h Ty
re pressure monitoring sy stem
(/ page 500)
T St
anding lights (/ page121)
L Low beam (/
page121)
K High beam (/
page123)
#! Tu
rn signal lights (/ page123)
R Re
ar fog light (/ page121) 488
Displaymessa ges and warning/indicator lamps

Occupant saf
ety Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
6 Re stra int sy stem warning
lamp *T
he redre stra int sy stem warning lamp is lit while the engine is running.
The restra int sy stem is malfunctioning (/ page 38). &
WARNING Risk of inju rydue tomalfunctions in there stra int sy stem
Components in there stra int sy stem may be activated unintentionally or not deploy as intended in an accident. #
Have there stra int sy stem checked and repaired immediately at a qualified specialist workshop. #
Drive on carefully. #
Notethe messages on the multifunction displa y. #
Consult a qualified specialist workshop immediatel y.
ü
Seat belt warning lamp *T
he red seat belt warning lamp flashes and an intermit tent wa rning tone sounds.
or
The red seat belt warning lamp lights up once the engine has star ted.
In addition, an intermittent warning tone may sound.
The red seat belt warning lamp flashes and an intermit tent wa rning tone sounds:
The driver or front passenger has not fastened his or her seat belt while theve hicle is in motion. #
Fasten your seat belt (/ page 42).
There are objects on the front passenger seat. Display messages and
warning/indicator lamps 489

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions #
Remo vethe objects from the front passenger seat.
The red seat belt warning lamp lights up once the engine 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 42).
If yo u ha veplaced objects on the front passenger seat, there d seat belt warning lamp may remain lit. Ve
hicle Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
Ù Po we rst eering warning
lamp (red) *T
he red po werst eering sy stem warning lamp is lit while the engine is running.
The po wer assi stance or thesteering itself is malfunctioning. &
WARNING Risk of accident if steering capability is impaired
If th esteering 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 traf fic conditions. Do
not continue driving under any circums tances. #
Consult a qualified specialist workshop. #
Notethe messages on the multifunction displa y.490
Display messages and warning/indicator lamps

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
8 Fu elreser ve wa rning 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. Brakes
Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
! Elect ric pa rking brake indi‐
cator lamp (red)
!
The elect ric pa rking brake
(yellow) indicator lamp *T
he red elect ric pa rking brake indicator lamp flashes or is lit.
The yellow elect ric pa rking brake indicator lamp also lights up in theev ent of a malfunction. #
Notethe messages on the multifunction displa y.494
Display messages and warning/indicator lamps

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions #
Stop in a safe location immediately. Do not continue driving! #
Consult a qualified specialist workshop. &
WARNING Risk of an accident due tolow brake fluid le vel
If th e brake fluid le vel is too lo w,the braking ef fect and the braking characteristics may be impaired. #
Stop theve hicle as soon as possible, paying attention toroad and traf fic conditions. Do not continue driv‐
ing. #
Consult a qualified specialist workshop. #
Do not top up the brake fluid. Driving sy
stems Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
L Wa rning lamp for dis tance
wa rning function *T
he red dis tancewarning 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 obs tacle at too high a speed. #
Be prepared tobrake immediatel y. #
Increase the dis tance. 496
Display messa ges and warning/indicator lamps

Sy
stem limits.........................................2 05
Tr ailer operation.................................... 205
Ac tive Parking Assist
Exiting a parking space......................... 223
Fu nction................................................ 220
Pa rking................................................. .222
Sy stem limitations................................. 220
Ac tive Se rvice Sy stem PLUS
see AS SYST PLUS
Ac tive Speed Limit Assi st
Displ ay................................................... 19 0
Fu nction................................................ 19 0
Ac tive Steering Assist
Ac tivating/deactivating......................... 194
Ac tive Emergency Stop Assis t............... 19 5
Fu nction................................................ 19 3
Sy stem limits.........................................1 93
Ad aptive brake lights ................................ 181
Ad aptive cruise control
see Active Dis tance Assi stDISTRONIC
Ad aptive Highbeam Assist Plus
Fu nction................................................ 12 6
Switching on/of f................................... 127Ad
Blue ®
Ad ditives...............................................4 25
Capacity................................................ 426
No tes..................................................... 16 5
Purity..................................................... 425
To pping up............................................. 16 6
Ad ditional door lo ck.................................... 74
Ad diti ves
Ad Blue ®
................................................ 425
Engine oil.............................................. 426
Fu el....................................................... 423
Ad diti ves (AdBlue ®
)
see AdBlue ®
Ad diti ves (engine oil)
see Additives
Ad diti ves (fuel)
see Fuel
Ad dress book
see Contacts
Ad justing bass, mid- range and treble
settings
Adva nced sound sy stem........................3 60Ad
justing mid- range, treble and bass
settings
Adva nced sound sy stem........................3 60
Ad justing the balance/ fader
Adva nced sound sy stem........................3 60
Burmes ter®
sur round sound sy stem..... 360
Ad justing the bass, mid- range and
treble
Burmes ter®
sur round sound sy stem..... 359
Ad justing the mid- range, treble and
bass
Burmes ter®
sur round sound sy stem..... 359
Ad justing the sound focus
Burmes ter®
sur round sound sy stem..... 360
Ad justing treble, mid- range and bass
settings
Adva nced sound sy stem........................3 60
Burmes ter®
sur round sound sy stem..... 359
ADS PLUS damping sy stem
see AIRMATIC
Ad vanced sound sy stem
Ad justing the balance/fader................. 360 Index
503

Ad
justing treble, mid-range and bass
setting s................................................. 360
Calling up the sound menu.................... 360
Information............................................ 360
Switching volume adjustment on/of f.... 360
Af ter-sales service centre
see ASS YST PLUS
Air distribution Setting................................................... 13 5
Air freshener sy stem
see Fragrance sy stem
Air inlet see Air-water duct
Air pressure see Tyre pressure
Air suspension see AIRMATIC
Air vents
Ad justing (front).................................... 14 2
Ad justing (rear)..................................... .143
Air vents
see Air vents Ai
r-conditioning sy stem
see Climate control
Air-recirculation mode.............................. 137
Air-water duct Keeping free.......................................... 369
Airbag Activation................................................ 38
Fr ont airbag (driver, front passenger)...... 44
Ins tallation locations.............................. .44
Knee airbag............................................ .44
Overview................................................. 44
PA SSENGER AIR BAG indicator lamp....... 49
Pr otection................................................ 45
Re duced pr otection.................................46
Side airba g.............................................. 44
Wi ndow airba g......................................... 44
Airflow Setting................................................... 13 5
AIRM ATIC
Setting.................................................. .209
Suspension........................................... 208
Alarm sy stem
see ATA (anti-theft alarm sy stem) All-wheel drive
see 4MATIC
Alternative route
see Route
Ambient lighting Setting (MBUX multimedia sy stem)....... 12 9
Android Auto
Connecting a mobile phone (wireless).. .319
Ending.................................................... 319
Information............................................ 319
Overview................................................3 18
Sound settings....................................... 319
Tr ans ferred vehicle data........................3 20
Animals Pets in theve hicle................................... 70
Anti-lock braking sy stem
see ABS (Anti-lock Braking Sy stem)
Anti-skid chains
see Snow chains
Anti-theft pr otection
Ad ditional door loc k................................ .74
Immobiliser.............................................. 91504
Index

Anti-theft pr
otection
see ATA (anti-theft alarm sy stem)
Anticipatory occupant pr otection
see PRE- SAFE®
(anticipatory occu‐
pant pr otection)
see PRE-SAFE ®
PLUS (anticipatory
occupant pr otection plus)
Apple CarPlay ®
Connecting an iPhone ®
.......................... 317
Ending.................................................... 318
No tes..................................................... 317
Overview................................................ 317
Sound settings....................................... 318
Tr ans ferred vehicle data........................3 20
Assistance sy stems
see Driving saf ety sy stem
ASS YST PLUS
Battery disconnection pe riods.............. 362
Displaying the service due dat e............. 361
Fu nction/no tes...................................... 361
Re gular maintenance work.................... 361
Special service requirements............... .361
ATA (anti-theft ala rmsystem)
Deactivating the alarm............................ 92 Fu
nction.................................................. 91
Fu nction of interior pr otection................. 93
Priming/deactivating interior pr otec‐
tion.......................................................... 93
Priming/deactivating tow- aw ay pro‐
te ction..................................................... 93
To w- aw ay protection function.................. 92
AT TENTION ASSI ST
Fu nction................................................. 181
Setting................................................... 183
Sy stem limitations................................. 181
At tention assistant
see ATTENTION ASSIST
Au dio mode
Connecting USB device s....................... 338
Co pyrights............................................. 336
Information............................................ 334
Inserting/re moving an SD car d............. 336
Media sea rch........................................ .342
Overview............................................... 338
Pa use and playback function................ .339
Selecting a track................................... 339
Selecting playba ckoptions.................... 339
Switching on media mode..................... 336
Tr ack list............................................... .339 Au
thorised workshop
see Qualified specialist workshop
Au tomatic distance control
see Active Dis tance Assi stDISTRONIC
Au tomatic driving lights ...........................12 2
Au tomatic engine start (ECO start/
sto p function)............................................ 15 2
Au tomatic engine stop (ECO start/
sto p function)............................................ 15 2
Au tomatic front passen ger front air‐
bag deacti vation sy stem
see Automatic front passenger front
airbag shutoff
Au tomatic front passen ger front air‐
bag shu toff
Fu nction of the automatic front
passenger front airbag deactivation
sy stem..................................................... 47
PA SSENGER AIR BAG indicator lamp....... 49
Au tomatic mir rorfo lding function
Ac tivating/deactivating......................... 13 4
Au tomatic transmission
DIRECT SELECT le ver............................. 157 Index
505

Drive program display............................
15 6
Drive programs...................................... 15 5
DY NA MIC SELECT switch...................... 15 5
Engaging drive position........................ .159
Engaging neutral................................... .158
Engaging park position.......................... 15 9
Engaging reve rsege ar........................... 15 8
Kickdown............................................... 161
Manual gear changing.......................... .160
St eering wheel gearshift paddles.......... 16 0
Tr ansmission position displa y................ 157
Tr ansmission position s..........................157
Au tomatic transmission (problem)
see Transmission (problem)
Axle load Perm issible............................................ 41 8
Tr ailer operation.................................... 432 B
Bad weather light...................................... 12 6
Bag hook..................................................... 11 4
Ball ne ck
Fo lding out/in....................................... 227
BA S (Brake Assist Sy stem)....................... 17 7Battery
Remo tecontrol (s tationary heater)........ 141
Battery see Battery (vehicle)
Battery (k ey)
Re placing.................................................73
Battery (vehicle) Charging................................................ 388
Charging (Remo teOnline)...................... 14 6
No tes....................................................3 85
No tes (s tarting assis tance and
ch arging)............................................... 386
Re placing.............................................. 390
St arting assis tance................................ 388
Belt see Seat belt
Bic ycle rack
Load capacity........................................ 431
Tr ailer operation.................................... 231
Blind Spot Assist Activating/deactivating......................... 205
Fu nction................................................ 202
Sy stem limitations................................. 202 Blo
wer
see Climate control
BlueTEC see AdBlue ®
Blue tooth ®
Information............................................ 265
Setting up an Internet connection.........3 30
Switching on/off.................................. .265
Switching profile (DUN/PAN)................ 331
Blue tooth ®
audio
Ac tivating.............................................. 346
De-authorising (de-regis tering) the
device.................................................... 347
Information...........................................3 44
Overview............................................... 345
Sear ching for a track............................. 347
Sear ching for and auth orisingthe
device.................................................... 345
Selecting a media pla yer....................... 346
Switching device via NFC...................... 347
Bonnet Resetting (active bonnet)...................... 362 506
Index