2021 MERCEDES-BENZ C-CLASS COUPE key battery

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

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

Instrument clus
ter................................... 10
Wa rning/indicator lamps...................... .487
Instrument display and on-board
compu ter
Fu nction/no tes..................................... 233
In te lligent Light Sy stem
Ac tivating/deactivating......................... 12 6
Ac tive headla mps.................................. 124
Ad aptive Highbeam Assist Plus............ .126
Bad weather light.................................. 12 6
City lighting.......................................... .126
Cornering light....................................... 124
Fo g light (enhanced)..............................1 25
Mo torw ay mode..................................... 12 5
Overview................................................1 24
Interior lighting Adjusting............................................... 12 8
Ambient lighting.................................... 12 9
Re ading lam p......................................... 12 8
Switch-off del aytime............................. 12 9
Interior pr otection
Fu nction.................................................. 93
Priming/deactivating.............................. 93 In
term ediatedestination
Calculating a route with intermediate
destinations.......................................... 282
En tering................................................. 281
Modifying............................................... 281
St arting an automatic filling station
sear ch................................................... 280
St arting the automatic service sta‐
tion sear ch............................................ 287
In tern etconnection
Cancelling permission (mobile phone).. 332
Communication module function.......... 329
Displaying the connection status.......... 332
Editing access data (Blue tooth®
)........... 331
Information............................................ 329
Mobile phone de tails............................ .332
Overview of connection status.............. 332
Re strictions........................................... 329
Setting access da ta(Blue tooth ®
).......... 330
Setting up (Blue tooth®
).........................3 30
Setting up (Wi-Fi)................................... 330
Switching Blue tooth®
profile (DUN/
PA N)...................................................... 331
Internet radio
see TuneIn Ionisation
Activating/deactivating (multimedia
sy stem).................................................. 137
iPhone ®
see Apple CarPlay ®
see Mercedes-Benz Link
ISOFIX child seat anchor
Seats suitable for attaching..................... 60
ISOFIX child seat securing sy stem
Fitting..................................................... .61 J
Jack Declaration of conformity........................ 28
Storage location.................................... 408
Jump-start connection General no tes........................................ 386 K
Key Acoustic locking verification signal.......... 72
Battery.................................................... 73
Deactivating a function............................ 72520
Index