2021 MERCEDES-BENZ C-CLASS COUPE key

Key
Display messages
Possible causes/consequences and M
MSolutions
Á Replace key *H
avetheke yre placed. #
Consult a qualified specialist workshop.
Á Change key batteries *T
hekey bat tery is dischar ged. #
Replace the battery (/ page73).
Á
Key not detected (white dis‐
play message) *T
hekey is cur rently und etected. #
Change the location of theke y in theve hicle. #
Ifth eke y is still not recognised, place it in the slot forst arting with theke y (/ page146). Displ
aymessa ges and warning/indicator lamps 437

Display messages
Possible causes/consequences and M
MSolutions
Á Key not detected (red dis‐
play message) *T
hekey cannot be de tected and may no longer be in theve hicle.
The key is no lon ger in theve hicle and you swit choff the engine:
R You can no lon gerst art the engine.
R You cannot centrally lock theve hicle. #
Ensure that theke y is in theve hicle.
If th eke y de tection function has a malfunction due toast ro ng radio signal source: #
Stop theve hicle immediately in accordance with the traf fic conditions. #
Place theke y in the slot forst arting the engine with theke y (/ page146).
Place the key in the
marked space See Owner's
Manual *K
eydetection is malfunctioning. #
Change the location of theke y in theve hicle. #
Place theke y in the slot forst arting the engine with theke y (/ page146). 438
Displaymessa ges and warning/indicator lamps

Boot lid
Activating/deactivating theta ilgate
opening limiter........................................ 84
Closin g................................................... .79
HANDS-FREE ACCES S............................. 82
Locking separately.................................. 83
Opening................................................... 79
Brake Assi stSystem
see BAS (Brake Assi stSystem)
Brake fluid
No tes..................................................... 427
Brake forc e distribution
EBD (Elect ronic Brake forc e Distribu‐
tion).......................................................1 79
Brakes ABS (Anti-lock Braking Sy stem).............1 77
Ac tive Brake Assi st................................ 19 6
Ad aptive brake lights............................. 181
BA S (Brake Assi stSystem).................... 17 7
Driving tips........................................... .149
EBD (Electronic Brake forc e Distribu‐
tion).......................................................1 79
HOLD function....................................... 180Limited braking ef
fect (salt-trea ted
ro ads).................................................... 14 9
New/replaced brake linings/brake
discs...................................................... 147
Ru nning-in no tes.................................... 147
Braking assistance see BAS (Brake Assi stSystem)
Breakdown Overview of the help functions................ 18
To w- starting......................................... .395
To wing away.......................................... 391
Tr ansporting theve hicle........................ 393
Wheel chang e....................................... .409
Breakdown see Flat tyre
Burmes ter®
sur round sound sy stem
Ad justing the balance/fader................. 360
Ad justing the sound focus..................... 360
Ad justing treble, mid-range and bass
setting s................................................. 359
Au tomatic volume adjustment............... 359
Calling up the sound menu.................... 359
Information............................................ 359
Switching the sur round sound on/off...3 60Buttons
Steering wheel...................................... 235 C
Call list Making a call.........................................3 13
Overview................................................3 12
Calling up the sound menu
Adva nced sound sy stem........................3 60
Burmes ter®
sur round sound sy stem..... 359
Calls Accepting.............................................. 309
Ac tivating functions du ring a call......... .309
Calls with se veral participant s............... 309
Declining............................................... 309
Ending a call.......................................... 309
Incoming call du ring an existing call...... 310
Making.................................................. 309
Mercedes me........................................3 20
Camera see 360° Camera
see Reversing camera
Car key
see Key Index
507

DIRECT SELECT le
ver
Engaging drive position........................ .159
Engaging neutral................................... .158
Engaging park position.......................... 15 9
Engaging pa rkposition automatically....1 59
Engaging reve rsege ar........................... 15 8
Fu nction................................................ 157
Display (care) ............................................ .374
Display (multimedia sy stem)
Settings................................................. 263
Display (on-boa rdcompu ter)
Displ ays on the multifunction displa y.... 236
Displ aymessage
Calling up (on-board compu ter)............. 433
No tes....................................................4 33
Display messages ¯ - - - km/h ..................................... 458
ç - - - km/h ..................................... 459
È - - - km/h ..................................... 459
# 12V battery See Owner's Man‐
ual..........................................................4 74Û
48 V battery See Owner's Man‐
ual.......................................................... 476
: Active Light Sy stem inoperative... 440
¯ AdBlue sy stem fault Emer. op.:
max. XXX mphSt art not poss. in XXX
miles .................................................... .484
¯ AdBlue sy stem fault Emer‐
ge ncy op. in XXX km See Owner's
Manual.................................................. 483
¯ AdBlue sy stem fault Engine
st art not possible................................. .484
¯ AdBlue sy stem fault See Own‐
er's Manual .......................................... .483
5 Add 1 litre engine oil when
next refuelling....................................... 485
é ATTENTION ASSIST inoperative ....458
é ATTENTION ASSIS T:Take a
break!....................................................4 58
: Automatic driving lights inoper‐
ative...................................................... 439 Á
Change key bat teries .................... 437
J Check brake fluid le vel................. 456
# Check brake pads See Owner's
Manual.................................................. 457
5 Check engine oil le vel when
next refuelling....................................... 485
ï Checktrailer hitch lo ck................ 443
h Check tyre(s) ................................ 478
! Clean the fuel filter ...................... 449
ÿ Coolant Stop vehicle Switch
engine off..............................................4 48
! currently una vailable See Own‐
er's Manual .......................................... .469
÷ currently una vailable See Own‐
er's Manual .......................................... .470
5 Engine oil le vel cannot be
measured .............................................. 487
5 Engine oil le velRe duce oil le vel.... 486
5 Engine oil le velSt op vehicle
Switch engine off.................................. 486 Index
511

5
Engine oil pressure Stop
Switch off engine.................................. 487
ä Fault Drive at max. 80 km/h........ 466
6 Front left malfunction Consult
wo rkshop (e xample).............................. 434
_ Front left seat backrest not
loc ked (e xamp le).................................. .447
& inoperative Battery low................ 442
& inoperative Refuel vehicle ............ 442
& inoperative See Owner's Man...... 442
! inoperative See Owner's Man‐
ual......................................................... 470
÷ inoperative See Owner's Manual ..471
T inoperative See Owner's Man‐
ual......................................................... 472
G Inoperative................................... 474
: Intellige nt Light Sy stem inoper‐
ative...................................................... 440
Á Key not de tected (red displ ay
messa ge)............................................... 438 Á
Key not de tected (white displ ay
messa ge)............................................... 437
: Left dipped beam (e xamp le)........ .439
6 Left wind owbag malfunction
Consult workshop (e xample)................ .434
¢ Lowe ring...................................... 467
: Malfunction See Owner's Man‐
ual......................................................... 439
ð Maximum speed exceeded ........... 460
Ø ..................................................... 482
ç Off................................................4 60
ë Off................................................ 457
! Parking brake See Owner's
Manual .................................................. 453
É Please reduce speed .................... 468
Ý Please wait 48 V battery charg‐
ing ........................................................ .476
_ Rear left seat backrest not
loc ked (Example)................................... 446
h Rectify tyre pressure.................... 479Ø
Refill Ad Blue See Owne r’s
Manual.................................................. 482
! Release parking brake .................. 456
¸ Replace air cleaner ......................449
Á Replace key.................................. 437
8 Reser vefuel le vel......................... 449
6 Restra int sys. malfunction Con‐
sult workshop........................................ 434
# See Owner's Manual....................4 75
Ù Steering malfunction Incre ased
ph ysical ef fort See Owner's Manual ......444
Ù Steering malfunction Stop
immediately See Owner's Manual .........445
# Stop vehicle Lea veengine run‐
ning ....................................................... 476
# Stop vehicle See Owner's Man‐
ual......................................................... 475
É Stop vehicle Vehicle too low......... 466
ç suspended...................................4 59
: Switch off lights ........................... 440512
Index

Ty
re press. monitor inoperative.............4 77
Ty re press. monitor inoperative No
wheel sensors ........................................ 478
Ty re pressure Check tyres .....................481
Ty re(s) ove rheated................................. 480
Wi thout changing gear, consult work‐
shop......................................................4 51
Display on the windscreen
see Head-up display
Distance control see Active Dis tance Assi stDISTRONIC
DI STRO NIC
see Active Dis tance Assi stDISTRONIC
Door Additional door loc k................................ .74
Locking/unlocking (emergency key)....... .78
Opening (from inside).............................. 75
Un locking (from inside).......................... .75
Door cont rol panel....................................... 16
Dr aw bar
see Tow- bar sy stem
Drive Away Assist ...................................... 225 Drive
Away Assist
see Pr otection against collision
Drive position Enga ging................................................1 59
Drive prog ram display ............................... 15 6
Drive prog rams
see DYNA MIC SELECT
Driver's seat see Seat
Driving abroad Light adjustment (low beam)................. 121
Driving saf ety sy stem
ABS (Anti-lock Braking Sy stem).............1 77
Ac tive Brake Assi st................................ 19 6
Ad aptive brake lights............................. 181
BA S (Brake Assi stSystem).................... 17 7
Cameras............................................... .175
EBD (Electronic Brake forc e Distribu‐
tion).......................................................1 79
ESP ®
Crosswind Assist.......................... 178
ESP ®
trailer stabilisation...................... .179
Overview................................................ 176
Ra dar and ultrasonic sensor s................ 175
Re sponsibility........................................1 75ST
EER CONTROL................................... 17 9
Driving sy stem
DY NA MIC BODY CONTROL.................... 208
Driving sy stem
see 360° Camera
see Active Blind Spot Assi st
see Active Dis tance Assi stDISTRONIC
see Active Emergency Stop Assist
see Active Lane Keeping Assist
see Active Parking Assist
see Active Speed Limit Assi st
see Active Steering Assist
see AIRMATIC
see ATTENTION ASSIST
see Blind Spot Assist
see Cruise control
see Driving saf ety sy stem
see HOLD function
see Limiter
see Parking Assist PARKTRONIC
see Reversing camera
see Traf fic Sign Assi st
Driving tips Driving abroad (low beam light
adjustment).......................................... .121 Index
515

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

HD prog
rammes
see CI+ module
Head restra int
Fr ont (adjusting mechanically)................ 99
Re ar (adjusting).................................... .100
Re ar (removing/fitting).......................... 100
Head-up display Adjusting display elements (on-board
compu ter)............................................. 238
Ad justing the brightness (on-board
computer).............................................2 38
Fu nction................................................ 237
Menu (on-board compu ter).................. .238
Operating the memory function............ 108
Setting the position (on-board com‐
puter)....................................................2 38
Switching on/of f................................... 238
Headlamp flashing.................................... 12 3
Headlamps see Automatic driving lights
Heating see Climate control
Help call see Mercedes-Benz emergency call sy stem High beam
Activating/deactivating......................... 12 3
Ad aptive Highbeam Assist Plus............ .126
High-pressure cleaner (care).................... 370
Hill Start Assist......................................... .181
HOLD function Function/no tes..................................... 180
Switching on/of f................................... 180
Hooking the luggage net .......................... .115
Hotspot Setting up (Wi-Fi).................................. .267 I
i-Size child seat securing sy stem
Fitting..................................................... .61
Seats suitable for attaching..................... 61
Identification pla te
Engine................................................... .418
Ve hicle................................................... 41 8
Ignition Swit ching on (S tart/S top button).......... 14 4
Ignition key
see Key Immobiliser
.................................................. 91
Implied warranty
Ve hicle.................................................... 32
In Car Of fice
Calling up.............................................. .315
Fe atures................................................ 314
Marking a to-do entry as compl eted...... 315
Noting an incoming call......................... 315
Selecting functions................................ 315
Switching au tomatic start on/of f.......... 315
Increase in traf fic information volume
Setting................................................... 350
Indicator lamp see Warning/indicator lamp
Individual drive prog ram
Con figuring............................................ 157
Selecting............................................... 15 6
Inspection see AS SYST PLUS
Instrument clus ter
Fu nction/no tes............................. 233, 234
In stru ment display
Fu nction/no tes..................................... 234 Index
519