2021 MERCEDES-BENZ C-CLASS COUPE brake

Display messages
Possible causes/consequences and M
MSolutions
Active Brake Assist Func-
tions limited See Owner's
Manual *F
orvehicles with the Driving Assis tance Package, thefo llowing functions may be temp orarily una vailable or limited:
R Active Brake Assi stwith cross-traf fic function
R Evasi veSteering Assist
R PRE‑SAFE ®
PLUS
Ve hicles without the Driving Assistance Package: Active Brake Assi stistemp orarily una vailable or only partially
av ailable. #
Consult a qualified specialist workshop.
Radar sensors dirty See
Owner's Manual *T
heradar sensor sy stem is malfunctioning. Possible causes:
R Dirt on the sensors
R Heavy rain or snow
R Extended country driving wi thout other traf fic, e.g. in the desert
Driving sy stems and driving saf ety sy stems may be malfunctioning or temp orarily una vailable.
Once the cause of the problem is no longer present, the driving sy stems and driving saf ety sy stems will be available
again.
If th e display message does not disappear: #
Stop theve hicle in accordance with the tra ffic conditions. #
Clean all sensors (/ page373). #
Restart the engine. Display messages and
warning/indicator lamps 473

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

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
J Brake sy stem warning lamp
(yellow) *T
he yellow brake sy stem warning lamp is lit while the engine is running. &
WARNING Risk of an accident due toa brake sy stem malfunction
If th e brake sy stem is malfunctioning, braking characteristics may be impaired. #
Drive on carefull y. #
Have the brake sy stem checked immediately at a qualified specialist workshop. #
Adjust your speed and drive on carefull y,leaving a suitable dis tance totheve hicle in front. #
Ifth e multifunction display sho wsa display message, obse rve it. #
Consult a qualified specialist workshop.
J Brake sy stem warning lamp
(red) *T
he red brake sy stem warning lamp is lit while the engine is running.
Po ssible causes:
R The brake forc e boosting is malfunctioning and the braking characteristics may be af fected.
R The reis insuf ficient brake fluid in the brake fluid reser voir. #
Notethe messages on the multifunction displa y. &
WARNING Risk of accident and inju ryif brake forc e boosting is malfunctioning
If brake forc e boosting is malfunctioning, increased brake pedal forc e may be necessary for braking. The braking
ch aracteristics may be impaired. The braking dis tance can increase in emergency braking situations. Display messa
ges and warning/indicator lamps 495

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

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
Fu nction of Active Brake Assi st (/ page 196).
ä Suspension warning lamp
(yellow) *T
he yellow AIRMATIC warning lamp is lit.
The yellow DYNA MIC BODY CONTROL warning lamp is lit.
A fault has occur red in AIRMATIC.
A fault has occur red in theDY NA MIC BODY CONTROL. #
Notethe messages on the multifunction displa y.Driving saf
ety sy stems Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
! ABS warning lamp *T
he yellow ABS warning lamp is lit while the engine is running.
ABS is malfunctioning.
If an additional warning tone sounds, EBD is malfunctioning.
Other driving sy stems and driving saf ety sy stems may also be malfunctioning. #
Notethe messages on the multifunction displa y. &
WARNING Thereis a risk of skidding if EBD or ABS is malfunctioning
The wheels may lock during braking. Display messages and
warning/indicator lamps 497

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
The steerability and braking characteristics are heavily impaired and the braking dis tance may increase. In addi‐
tion, other driving saf ety sy stems are switched off. #
Drive on carefull y. #
Have the brake sy stem checked immediately at a qualified specialist workshop. ÷
ESP ®
wa rning lamp *
The yellow ESP ®
wa rning lamp flashes while theve hicle is in motion.
or
The yellow ESP ®
wa rning lamp is lit while the engine is running.
The yellow ESP ®
wa rning lamp flashes while theve hicle is in motion:
One or more wheels has reached its grip limit (/ page177). #
Adapt your driving style to suit thero ad and weather conditions.
The yellow ESP warning lamp ®
is lit while the engine is running.
ESP ®
is malfunctioning.
Other driving sy stems and driving saf ety sy stems (e.g. BAS) may also be malfunctioning. #
Notethe messages on the multifunction displa y. &
WARNING Risk of skidding if ESP ®
is malfunctioning
If ESP ®
is malfunctioning, ESP ®
cannot car ryout vehicle stabilisation. In addition, other driving saf ety sy stems
are switched off. 498
Display messages and warning/indicator lamps

1,
2, 3 ...
4MATIC Function................................................ 16 2
12 V battery
see Battery (vehicle)
12 V so cket
see Soc ket (12 V)
48 V on-board electrical sy stem
see EQ Boo sttech nology
360° Came ra
Button.................................................... 216
Car e...................................................... .373
Fu nction................................................. 213
Opening the camera co ver (r eve rsing
camera)................................................. 216
Selecting a view..................................... 216
Setting favo urites.................................. .216
Switching au tomatic operation
on/off (r eversing camera).................... .216 A
A/C function Activating/deactivating (control
panel).................................................... 13 6
ABS (Anti-lock Braking Sy stem) .............. .177
Ac celeration
see Kickdown
Ac cess data
Editing (Blue tooth®
)...............................3 31
Setting (Blue tooth®
).............................. 330
Ac cident and Breakdown Manage‐
ment
Mercedes me connect.......................... .325
Ac oustic locking verification signal
Ac tivating/deactivating........................... 72
Ac tivating/deactivating automatic
vo lume adjustment
Ad vanced sound sy stem........................3 60
Burmes ter®
sur round sound sy stem..... 359
Ac tive Blind Spot Assi st
Brake application.................................. 204
Fu nction................................................ 202
Sy stem limitations................................. 202 Tr
ailer operatio n.................................... 204
Ac tive bonn et(pedestrian pr otection)
Operation.............................................. 362
Re setting...............................................3 62
Ac tive Brake Assi st
Fu nction/no tes..................................... 19 6
Setting................................................... 200
Ac tive Di stance Assist DISTRO NIC
Ac tive Emergency Stop Assis t............... 19 5
Calling up a spee d................................. 189
Fu nction................................................ 186
Increasing/decreasing speed................ 189
Ro ute-based speed adap tatio n.............. 191
Selecting............................................... 189
St oring a speed.....................................1 89
Switching off/deactivating.................... 189
Switching on/activating........................ 189
Sy stem limitations................................. 186
Ac tive Eme rgency Stop Assist ................ .195
Ac tive headlamps...................................... 124
Ac tive Lane Keeping Assist
Ac tivating/deactivating......................... 207
Ac tivating/deactivating thewa rning.... .208
Fu nction................................................ 205 502
Index