stop start MERCEDES-BENZ C-CLASS COUPE 2021 Owner's Guide

Display messages
Possible causes/consequences and M
MSolutions
# Stop vehicle Leave engine
running *T
he12 V battery charge leve l is too lo w. #
Stop theve hicle immediately in accordance with the traf fic conditions. Do not continue driving. #
Lea vethe engine running. #
Ifth e display message disappears: drive on. #
Ifth e display message does not disappear: consult a qualified specialist workshop.
Û 48 V battery See Owner's
Manual *T
he 48 V on-board electrical sy stem has function restrictions. Comfort functions may be restricted. #
Consult a qualified specialist workshop immediatel y.
Ý
Please wait 48 V battery
charging *T
he 48 V battery is dischar ged. You ha veswitched on the ignition while the12 V battery was being charge d with a
suitable charge r or while ano ther vehicle was pr oviding starting assis tance.
The discha rged 48 V battery is charge d automatically via thevo ltage con verter. Af ter a few minutes, theMotor can
be started again display message will be shown on the multifunction displa y. #
Start theve hicle. #
Drive theve hicle for a while tocharge the12 V battery and the 48 V battery af ter disconnecting thech arger
from theve hicle.
If th eMotor can be started again display message does not appear af ter a few minutes: 476
Displaymessa ges and warning/indicator lamps

Display messages
Possible causes/consequences and M
MSolutions
R The driving characteristics as well as thesteering 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. #
Stop theve hicle in accordance with the tra ffic conditions. #
Check the tyre pressure (/ page 400) andthe tyres.
h
Rectify tyre pressure *T
he tyre pressure is too low in at least one of the tyres, or the dif fere nce in tyre pressure between the individual
wheels is too great. #
Check the tyre pressure and add air, if necessar y. #
When the tyre pressure is cor rect, restart the tyre pressure monitoring sy stem (/ page 403).
h Warning tyre defect *T
he tyre pressure in one or more tyres has dropped suddenly. The wheel position will be displa yed. &
WARNING Risk of an accident from driving wi thaflat tyre
R The tyres can overheat and be damaged.
R The driving characteristics as well as thesteering and braking characteristics may be great lyimpaired.
Yo u could then lose control of theve hicle. #
Do not drive with a flat tyre. Display messages and
warning/indicator lamps 47 9

Ty
re pressure loss warning sy stem Display messages
Possible causes/consequences and M
MSolutions
Tyre pressure Check tyres *T
he tyre pressure loss warning sy stem has de tected a significant loss of pressure. &
WARNING Risk of an accident due toinsuf ficient tyre pressure
R The tyres can bu rst.
R The tyres can wearexc essively and/or une venly.
R The driving characteristics as well as thesteering 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. #
Stop theve hicle in accordance with the tra ffic conditions. #
Check the tyre pressure (/ page 400) andthe tyres. #
When the tyre pressure is cor rect, restart the tyre pressure loss warning sy stem (/ page 403).
Check tyre pressures then
restart Run Flat Indicator *T
he tyre pressure loss warning sy stem generated a displ aymessa geand has not been restar ted since. #
When the tyre pressure is cor rect, restart the tyre pressure loss warning sy stem (/ page 403).
Run Flat Indicator inopera-
tive *T
he tyre pressure loss warning sy stem is malfunctioning. #
Consult a qualified specialist workshop. Display messages and
warning/indicator lamps 481

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

:
Switch on headlamps................... 440
Ø Top up AdBlue Emergency op.
in XXX miles See Owner's Manual......... 482
+ Top up coolant See Owner ’s
Manual.................................................. 448
¥ Top up washer fluid ...................... 447
! Turn on the ignition torelease
th e parking brake..................................4 56
d Vehicle is operational Switch
off ignition before exiting..................... .443
É Vehicle rising Please wait............ .468
É Vehicle rising................................4 67
h Warning tyre defect..................... .479
h Wheel sensor(s) missing............... 478
Ø XX,X l Top up AdBlue Switch on
ignition, wait 60 sec. or eng. start
not poss................................................ 483
Ac tive Blind Spot Assi stcur rently
una vailable See Owner's Manual ...........464
Ac tive Blind Spot Assi stinope rative ...... 464 Ac
tive Blind Spot Assi stnot available
when towing a trailer See Owner's
Manual .................................................. 464
Ac tive bonnet malfunction See Own‐
er's Manual........................................... 445
Ac tive Brake Assi stFunctions cur‐
re ntly limited See Owner's Manual ........472
Ac tive Brake Assi stFunctions limited
See Owner's Manual.............................. 473
Ac tive Dis tance Assi stavailable again ...4 60
Ac tive Dis tance Assi stcur rently
una vailable See Owner's Manual ...........460
Ac tive Dis tance Assi stinope rative ........ 460
Ac tive Lane Keeping Assist Camera
view restricted See Owner's Manual..... 465
Ac tive Lane Keeping Assist cur rently
una vailable See Owner's Manual ...........464
Ac tive Lane Keeping Assist inopera‐
tive........................................................ 465 Ac
tive Steering Assist cur rently
una vailable due tomultiple emer‐
ge ncy stops...........................................4 61
Ac tive Steering Assist cur rently
una vailable See Owner's Manual ...........461
Ac tive Steering Assist inoperative ..........461
Ad aptive Highbeam Assist Plus Cam‐
era view restricted See Owner's
Manual................................................... 441
Ad aptive Highbeam Assist Plus cur‐
re ntly una vailable See Owner's Man‐
ual......................................................... 441
Ad aptive Highbeam Assist Plus inop‐
erative.................................................. .441
App lybrake todeselect Park (P)
position................................................. 450
Apply brake toselect R......................... 450
Au xilia rybattery malfunction (red
display message) ...................................4 52 Index
513

Au
xilia rybattery malfunction (white
display message) ...................................4 52
Beginning emer gency stop.....................4 61
Blind Spot Assi stcur rently una vaila‐
ble See Owner's Manual ........................ 463
Blind Spot Assist inope rative ................. 463
Blind Spot Assi stnot available when
to wing a trailer See Owner's Manual .....4 63
Cannot start engine See Owner's
Manual................................................. .477
Check tyre pressures then restart
Ru n Flat Indicator................................. .481
Cruise cont rol and Limiter inope rative.. 458
Cruise control inope rative..................... 458
Cruise control off.................................. 459
Fr ont-passenger airbag disabled See
Owner's Manual....................................4 35
Fr ont-passenger airbag enabled See
Owner's Manual....................................4 35
Hazard warning lamps malfunctioning.. .442 Limi
ter inoperative................................ 459
Limiter passive...................................... 459
Mercedes me connect Services limi‐
te d See Owner's Manual........................4 74
Mo tor can be star ted again...................4 77
N permanently active Risk of vehicle
ro lling .................................................... 451
Only select Park (P) when vehicle is
st ationary.............................................. 450
Pa rking Assist and PARKTRONIC
inoperative See Owner's Manual ...........468
Pa rking Assist Manoeuvring assis‐
ta nce limited See Owner's Manual........ 468
Place theke y in the mar ked space
See Owner's Manual............................. 438
PRE-SAFE inoperative See Owner's
Manual..................................................4 36
Ra dar sensors dirty See Owner's
Manual..................................................4 73
Re duce speed ........................................ 480 Re
versing not poss. Consult workshop.. 451
Risk of vehicle rolling Driver door
open and transmission not in P............. 451
Ru n Flat Indicator inope rative............... .481
Speed limit (winter tyres) XXX km/h..... 461
St op vehicle Lea veengine running
Wa itTransmission cooling .....................452
To shift out of P or N,depress brake
and start engine.................................... 450
To switch off the engine, press
St art/ Stop button for at least 3 sec‐
onds or 3 times. ................................... .447
Tr af fic Sign Assi stCamera view
re stricted See Owner's Manual............. 462
Tr af fic Sign Assi stcur rently una vaila‐
ble See Owner's Manual ........................ 462
Tr af fic Sign Assi stinope rative ............... 462
Tr ansmission Malfunction Stop.............. 451
Ty re press. monitor cur rently una vail‐
able ...................................................... .477 514
Index

Gene
ral driving tips.............................. .149
optimised acceleratio n..........................14 8
Ru nning-in no tes.................................... 147
Dr ow siness de tection
see ATTENTION ASSIST
DY NA MIC BODY CONT ROL
Chassis................................................ .208
Dynamic handling control sy stem
see ESP ®
(Elect ronic Stability Prog ram)
DY NA MIC SELECT
Configuri ng drive program I................... 157
Displ aying engine dat a.......................... 157
Displ aying vehicle dat a.......................... 157
Drive program display............................ 15 6
Drive programs...................................... 15 5
Fu nction................................................ 15 5
Operating (DYNAMIC SELECT switch)....1 56
Selecting the drive prog ram.................. 15 6
Showing ope ration feedback.................1 57E
E10 ............................................................ .422
Easy entry feature
Fu nction/no tes..................................... 106Setting...................................................
107
Easy exitfeature
Fu nction/no tes..................................... 106
Setting................................................... 107
EBD (Electronic Brake forc e Distribu‐
tion)
Function/no tes..................................... 17 9
ECO Assist Function/no tes..................................... 154
ECO display Function................................................ 15 3
ECO start/s top function
Au tomatic engine start.......................... 15 2
Au tomatic engine stop...........................1 52
Operation.............................................. 15 2
Switching off/on................................... 15 3
Electric pa rking brake
Applying automaticall y........................... 171
App lying/ releasing manuall y................. 173
Emergency braking................................ 173
Re leasing automaticall y......................... 172
Electrical fuses see Fuses Electromagnetic compatibility
Declaration of conformity........................ 25
Electronic Stability Prog ram
see ESP ®
(Electronic Stability Prog ram)
Emer gency
Fire extinguisher.................................... 377
Fir st-aid kit (so ftsided).........................3 77
Overview of the help functions................ 18
Re moving thewa rning triangle.............. 376
Saf etyve st............................................. 376
Setting up thewa rning triangle............. 377
Emer gency braking ................................... 173
Emer gency braking
see BAS (Brake Assi stSystem)
Emer gency engine start ........................... 395
Emer gency key
Inserting/removing.................................73
Locking/unlocking the doors.................. 78
Emer gency operation mode
St arting theve hicle...............................1 46
Emer gency spare wheel
No tes..................................................... 414516
Index

ENERGIZING COMFORT
Overview of programmes...................... .275
St arting the programme........................ 275
Engine ECO start/ stop function........................ 15 2
Engine number....................................... 41 8
St arting (eme rgency operation mode).. .146
St arting (Remo teOnline).......................1 47
St arting (s tart/s top button).................. 14 5
St arting assis tance................................ 388
Switching off (s tart/s top button).......... 16 8
Engine bonnet Function (active bonnet)........................ 362
Opening/closing................................... 363
Engine data Displaying.............................................. 157
Engine electronics Notes..................................................... 416
Engine number .......................................... .418
Engine oil Additives...............................................4 26
Capacity................................................ 427
Che cking the oil le vel using the oil
dipstick................................................. 365 Checking
the oil le vel using the on-
board computer..................................... 366
MB-Fr eigabe or MB-Appr oval................ .427
Quality................................................... 427
To pping up............................................. 366
Entering characters
Fu nction/no tes...................................... 261
On theto uchpad.................................. .263
Using the controller............................... 262
EQ Boost technology
Operating saf ety...................................... 23
ERA-G LONA SS test mode
St arting/ending.................................... 328
Er ro r message
see Displ aymessa ge
ESC (Electronic Stability Control)
see ESP ®
(Electronic Stability Prog ram)
ESP ®
Crosswind Assist.................................. .178
Tr ailer stabilisation................................ 17 9
ESP ®
(Electronic Stability Prog ram)
Ac tivating/deactivating......................... 17 9
Fu nction/no tes..................................... 17 7EU
general operating permit number ......41 8
Exterior lighting Care...................................................... .373
Exterior lighting see Lights F
Fa tigue de tection
see ATTENTION ASSIST
Favo urites
Ad ding................................................... 259
Calling up.............................................. 259
Deleting.................................................2 59
Moving.................................................. 259
Overview............................................... 258
Re naming.............................................. 259
Fi lling station sear ch
St arting automatic sear ch..................... 280
Switching the automatic sear chon/
off.........................................................2 86
Using auto matic search......................... 286
Fi re extinguisher....................................... 377
Firs t-aid kit (soft sided) ............................377 Index
517

Specialist
workshop
see Qualified specialist workshop
Specific absor ption rate ............................. 25
Speech dialogue sy stem
see LINGU ATRO NIC
Speed limit for winter tyres
Setting................................................... 186
St andby mode
Ac tivating/deactivating......................... 174
Fu nction................................................. 174
St anding lights........................................... 121
St art-off assi st
see Optimised acceleration
St art/s top button
Pa rking theve hicle................................1 68
St arting theve hicle...............................1 45
Switching on the po wer supply or
ignition.................................................. 14 4
St art/s top function
see ECO start/ stop function
St arter battery
Charging (Remo teOnline)...................... 14 6St
arting
see Vehicle
St arting assi stance
see Jump -sta rt connection
St arting-o ffaid
see Hill Start Assist
St ation
Deleting................................................. 349
Direct frequency entr y.......................... 349
Fr equency fix......................................... 350
Moving.................................................. 349
Sea rching..............................................3 49
Setting................................................... 348
St oring..................................................3 49
St ation list
Calling up.............................................. 349
St ation presets
Managing.............................................. 349
St ation tracking
Setting................................................... 350
St ationary heater/ventilation
Displ ays (remo tecontrol)....................... 141
Problems (remo tecontrol)..................... 14 2
Re placing the battery (remo tecontrol).. 141Setting (multimedia sy
stem)..................1 40
Setting (remo tecontrol)........................ 14 0
Switching on/off (control panel )........... 13 9
ST EER CONT ROL
Fu nction/no tes..................................... 17 9
Ste ering wheel
Ad justing (electrically)........................... 105
Ad justing (manually). ............................. 104
Buttons.................................................. 235
Ca re....................................................... 374
Operating the memory function............ 108
St eering wheel heater...........................1 05
Ste ering wheel gearshift paddles............ 16 0
Ste ering wheel heater
Ac tivating/deactivating......................... 105
St ow age areas
see Loading
see Stow age space
St ow age comp artments
see Loading
see Stow age space
St ow age space
Armrest.................................................. 111532
Index