ECU MERCEDES-BENZ C-CLASS COUPE 2021 Manual PDF

Brakes
Displ
aymessages
Possible causes/consequences and M
MSolutions
! Parking brake See Owner's
Manual *
The yellow ! indicator lamp is lit. The elect ric pa rking brake is malfunctioning.
To appl y: #
Switch the ignition off and switch it back on. #
Apply the electric parking brake manually (/ page173).
If it is not possible toapply the electric parking brake: #
Consult a qualified specialist workshop. #
Where necessar y,also secure the par kedve hicle against rolling away.
* The yellow ! indicator lamp and there d! indicator lamp are lit. The elect ric pa rking brake is malfunction‐
ing.
To release: #
Swit chthe ignition off and switch it back on. #
Release the electric parking brake manually (/ page173).
or #
Release the electric parking brake automatically (/ page172).
If it is still not possible torelease the electric parking brake: #
Do not continue driving. Consult a qualified specialist workshop. Display messages and
warning/indicator lamps 453

Display messages
Possible causes/consequences and M
MSolutions
* The yellow ! indicator lamp is lit and there d! indicator lamp is flashing. The electric parking brake is mal‐
functioning.
The electric parking brake could not be applied or released. #
Swit chthe ignition off and switch it back on.
To appl y: #
Release and then apply the electric parking brake manually (/ page173).
To release: #
Apply and then release the electric parking brake manuall y.
If it is not possible toapply the electric parking brake or there d! indicator lamp continues toflash: #
Do not continue driving. Consult a qualified specialist workshop. #
Where necessar y,also secure the par kedve hicle against rolling away.
* The yellow ! indicator lamp is lit and there d! indicator lamp flashes for appro ximately ten seconds af ter
th e electric parking brake has been applied or released. It then remains lit or goes out. The electric parking brake is
malfunctioning.
If th est ate of charge istoo lo w: #
Char gethe12 V batter y.
To appl y: 454
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and M
MSolutions #
Switch the ignition off.
The electric parking brake will be applied automaticall y.
If yo u do not wantthe electric parking brake tobe applied, e.g. at an automatic car wash or when theve hicle is
being towe d, lea vethe ignition switched on. This does not include having theve hicle towe d with there ar axle
ra ised.
If th e electric parking brake is not applied automatically: #
Switch the ignition off and switch it back on. #
Release and then apply the electric parking brake manually (/ page173).
If it is still not possible toapply the electric parking brake: #
Consult a qualified specialist workshop. #
Where necessar y,also secure the par kedve hicle against rolling away.
To release: #
Ifth e conditions for auto matic release are fulfilled and the electric parking brake is not released automaticall y,
re lease the electric parking brake manually (/ page173).
If it is still not possible torelease the electric parking brake: #
Do not continue driving. Consult a qualified specialist workshop. Display messages and
warning/indicator lamps 455

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
ï Tr ailer tow hit chwarning
lamp *T
hered trailer hitch warning lamp is lit.
The trailer hitch is not operational. &
WARNING Risk of an accident if the ball neck is not loc ked
The trailer may become de tach ed. #
Stop theve hicle immediately in accordance with the traf fic conditions. Do not continue driving. #
Uncouple the trailer and secure it against rolling away. #
Initiate a new swivel mo vement and do not re-couple the trailer until thewa rning/indicator lamp goes out. #
Notethe messages on the multifunction displa y.Engine
Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
ÿ Coolant warning lamp *T
he red coolant warning lamp is lit while the engine is running.
Po ssible causes:
R The temp erature sensor is malfunctioning
R The coolant le vel is too low
R The air supply tothera diator is obstructed
R The radiator fan is faulty Display messages and
warning/indicator lamps 491

Car
wash
see Care
Car wash (care)......................................... 369
Care 360° camera......................................... 373
Air-water duct........................................ 369
Au tomatic car wash............................... 369
Carpe t.................................................... 374
Deco rative foil...................................... .372
Displ ay................................................... 374
Exterior lighting.................................... .373
High-pressu recleaner........................... 370
Matt finis h............................................. 371
Pa int wo rk.............................................. 371
Plastic trim............................................ 374
Re alwo od/trim elements......................3 74
Re versing camera................................. .373
Ro of lining.............................................. 374
Seat belt................................................ 374
Seat co ver............................................. 374
Senso rs................................................. 373
St eering wheel....................................... 374
Ta ilpipes................................................ 373
Tr ailer hit ch........................................... 373
Wa shing byhand................................... 371Wheels/rims.........................................
373
Wi ndo ws................................................ 373
Wi per blades.......................................... 373
Carpet (Care).............................................. 374
Changing gears
Manually. ............................................... 16 0
Changing hub caps .................................. .409
Charging Battery (vehicle).................................... 388
Chassis Damping characteristics....................... .208
DY NA MIC BODY CONTROL.................... 208
Child seat Appr oval categories................................ .58
At tach ing (no tes).....................................57
Basic instructions.................................... 53
Fr ont passenger seat (no tes)...................68
Fr ont passenger seat (without auto‐
matic airbag shutoff)...............................67
ISOFIX/i-Size (fitting)............................... 61
No tes on risks and dangers..................... 54
Re commended child restra int sy stems....56
Seats suitable for belt-secu redch ild
re stra int sy stems..................................... 65 Seats suitable
for i‑Size child
re stra int sy stems..................................... 61
Seats suitable for ISOFIX child
re stra int sy stems..................................... 60
Securing on the co-driver seat................69
Secu ring on there ar seat........................ 66
To pTe ther............................................... 64
Child ren
Av oiding dangers in theve hicle............... 54
Basic instructions.................................... 53
Cho ck
St orage location.................................... 408
Chock see Chock
CI+ module Calling up a menu................................. 358
Inserting the smart card........................ 357
City lighting ............................................... 12 6
Cleaning see Care
Climate control Activating/deactivating the A/C
function (cont rol panel)........................ .136 508
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

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

Pa
ssive mode........................................ 184
Pe rm anent setting................................ .186
Re quirements........................................ 184
Selecting............................................... 184
Setting a speed..................................... 184
St oring a speed............................. 184, 189
Switching off/deacti vating.................... 189
Switching on/activating........................ 189
Sy stem limitations................................. 184
Limiting speed see Limiter
LINGU ATRO NIC
Application specific voice commands.... 24 0
Au dible help functions...........................2 41
Global voice command s........................ 24 0
Impr oving speech quality....................... 241
Langua gesetting...................................2 41
Media pla yervo ice command s.............. 24 8
Message voice command s.................... 250
Mu ltifunction steering wheel (operat‐
ing)........................................................ 239
Na vigation voice commands.................. 24 3
Operable functions................................2 40
Operating saf ety.................................... 239
Ra dio voice command s.......................... 247Switch
voice commands....................... .242
Te lephone voice controls....................... 247
Te xt messa gevoice commands............ .250
TV voice commands.............................. 247
Ty pes of voice commands.................... .240
Ve hicle voice command s...................... .251
Vo ice prom pting................................... .240
Live Traf fic Information
Displaying subsc ript ion informatio n......294
Displ aying the tra ffic map.................... .294
Displ aying traf fic incidents.................... 295
Extending a subscription....................... 294
Issuing hazard alerts............................. 296
Re gis tering on Mercedes me................. 294
Loading Bag hook................................................ 11 4
No tes..................................................... 108
Ro of luggage rack .................................. 11 5
Ti e-down eyes........................................ 11 3
Loading guidelines .................................... 108
Loads Securing............................................... .108
Locator lighting see Sur round lighting Locking an
extern al device (child
saf ety lock)................................................ 269
Locking/unlocking Activating/deactivating the auto‐
matic locking feature............................... 77
Ad ditional door loc k................................ .74
Emergency key........................................ 78
KEYLESS-GO............................................ 76
Un locking/opening the doors from
th e inside................................................. 75
Low beam Light adjustment (driving abroad).......... 121
Setting................................................... 12 8
Switching on/of f................................... 121
Lu bricant additives
see Additives
Lu ggage
Lu ggage net........................................... 11 5
Secu ring................................................ 108
Lu mbar support
see Lumbar support (4-w ay)
Lu mbar support (4-w ay)............................. 98 522
Index

Setting...................................................
14 0
Re mo teOnline
Charging thest ar ter battery.................. 14 6
Cooling/heating theve hicle interior...... 14 6
St arting theve hicle................................ 147
Re scue card................................................. 33
Re ser ve
Fu el....................................................... 424
Re set function (MBUX multimedia
sy stem)....................................................... 274
Re set function (MBUX multimedia
sy stem)
see Reset function (MBUX multime‐
dia sy stem)
Re setting (factory setting)
see Reset function (MBUX multime‐
dia sy stem)
Re sidual heat............................................. 137
Re stra int sy stem
Basic instructions forch ildren................ .53
Fu nction in an accident........................... 38
Fu nctionality............................................ 37
Malfunction............................................. 38 Pr
otection................................................ 37
Re duced pr otection.................................37
Self-test................................................... 37
Wa rning lamp......................................... .37
Re versege ar
Inserting................................................ 15 8
Re versing camera
Care....................................................... 373
Fu nction................................................. 210
Opening the camera co ver (360°
Camera)................................................. 216
Setting favo urites (360° Camera).......... 216
Switching au tomatic operation
on/off (360° Camera)........................... 216
Rims (care)................................................. 373
Ro llaw ay protection
see HOLD function
Ro ller sunblind
Sliding sunroof....................................... .87
Ro of lining (care) ...................................... .374
Ro of load .................................................... 430
Ro of luggage rack
Loading.................................................. 11 5Secu
ring................................................. 11 5
Ro ute
Calculating............................................ 284
Displ aying destination information....... .286
Planning................................................. 281
Selecting a type................................... .284
Selecting an al tern ative route.............. .286
Selecting notifications........................... 286
Selecting options.................................. 285
St arting the automatic service sta‐
tion sear ch............................................ 287
Switching the automatic filling sta‐
tion sear chon/off................................. 286
Using automatic filling station sear ch... 286
Wi th intermediate destinations............ .282
Ro ute guidance
Cancelling.............................................. 291
Changing direction................................ 288
Destination reached............................. .289
Fr om an off-road location...................... 291
Lane recommendations......................... 289
No tes..................................................... 287
Off-road................................................. 291
To an off- road destination...................... 291 Index
529

Connecting a mobile phone (Secure
Simple
Pairing)...................................... 305
De-authorising a mobile phon e.............. 307
Disconnecting a mobile phone.............. 307
Importing con tacts................................. 311
Importing contacts (o verview)................ 311
Incoming call during an existing call...... 310
Information............................................3 05
Inter changing mobile phones............... .306
Mobile phone voice recognition............ 309
No tes....................................................3 02
Operating modes................................... 305
Re ception and transmission volume...... 308
Swit ching mobile phones (Near Field
Communication (NFC)).......................... 308
Te lephone menu overvie w..................... 304
Te lephone operation.............................. 309
Using Near Field Communication
(NFC).................................................... .308
Vo ice commands (LINGU ATRO NIC)........2 47
Wi reless charging (mobile phone).......... 11 9
Te lephone operation
see Calls
Te lephony operating modes
Blue tooth ®
Te lephony........................... .305 Business
telephony............................... 305
Te lephony operating modes
see Second telephone
Te lete xt
Displaying..............................................3 57
Overview............................................... 356
Te levision
see TV
Te mp erature
Setting theve hicle interior temp era‐
ture........................................................ 13 5
Te xt messages
Calling a message sender......................3 14
Changing folder s.................................... 314
Composing............................................ 313
Con figuring the displa yedte xt mes‐
sa ge s..................................................... 313
Del eting................................................ .314
Drafts................................................... .314
No tes..................................................... 313
Options.................................................. 314
Outbox...................................................3 14
Re ad-aloud function.............................. .313
Re adin g.................................................. 313Re
plying.................................................3 14
Sending................................................. 313
Vo ice commands (LINGU ATRO NIC)....... 250
Through-loading feature
see Seat
Ti e-d owney es ............................................ .113
Time Manual time setting.............................. 265
Setting summer time............................. 264
Setting the time and date automati‐
cally....................................................... 264
Setting the time zone. ........................... 264
Setting the time/date form at............... .265
TIREFIT kit Declaration of conformity........................ 29
Storage location.................................... 380
Using..................................................... 380
To ne settings
Calling up the sound menu.................... 358
Information............................................ 358
To ngue weight .......................................... .431
To ol
see Vehicle tool kit 534
Index