MERCEDES-BENZ C-CLASS CABRIOLET 2021 Owners Manual

Cruise control
Activating.............................................. 17 7
Buttons.................................................. 17 7
Calling up a spee d................................. 17 7
Deactivating.......................................... 17 7
Fu nction................................................. 176
Re quirements........................................ 17 7
Selecting............................................... 17 7
Setting a speed...................................... 17 7
St oring a speed.....................................1 77
Sy stem limitations................................. 176D
Dashboa rd
see Cockpit
Data acquisition Vehicle.................................................... 33
Data import/export Function/no tes..................................... 262
Importing/exporting............................. 263
Data pr otection rights
Data storage............................................ 36
Data storage
Data pr otection rights............................. 36 Electro
nic control units.......................... .33
Online services........................................35
Ve hicle.................................................... 33
Date Setting the time and date automati‐
cally....................................................... 257
Deactivating the alarm (A TA )...................... 93
Deale rship
see Qualified speciali stwo rkshop
Declaration of conformity Electromagnetic compatibility.................25
Jack......................................................... 28
Specific absor ption rate.......................... 25
TIREFIT kit............................................... 29
Wi reless vehicle components.................. 25
Decorative foil (cleaning instructions) .... 365
DeNOx agent see AdBlue ®
De stination
Editing intermediate destinations......... .274
Editing the pr evious destinations.......... 285
Ex tern al................................................. 285
Saving (cur rent vehicle position)........... 285 Saving as a
favo urit e............................. 285
Saving asglobal favo urit e...................... 285
St oring a map position..........................2 85
Dest ination entry
En tering a 3 wordaddress..................... 275
Entering a POI or address...................... 270
Entering an intermedia tedestination.....2 74
Entering geo-coordinates....................... 275
Selecting a contact................................ 275
Selecting a POI...................................... 273
Selecting from the map......................... 276
Selecting pr evious destinations............ .273
De tecting inat tentiveness
see ATTENTION ASSIST
Diagnostics connection .............................. 29
Diesel Low outside temp eratures..................... 419
No tes..................................................... 419
Digital Owner's Manual .............................. 20
Digital TV
see TV
Dinghy towing
see Tow- bar sy stem 508
Index

DIRECT SELECT le
ver
Engaging drive position........................ .152
Engaging neutral................................... .151
Engaging pa rkposition.......................... 15 2
Engaging pa rkposition automatically....1 52
Engaging reve rsege ar........................... .151
Fu nction................................................ 15 0
Display (care) ............................................ .369
Display (multimedia sy stem)
Settings................................................. 256
Display (on-boa rdcompu ter)
Displ ays on the multifunction displa y.... 229
Displ aymessage
Calling up (on-board compu ter)............ .430
No tes....................................................4 30
Display messages ¯ - - - km/h ..................................... 457
ç - - - km/h ..................................... 458
È - - - km/h ..................................... 457
# 12V battery See Owner's Man‐
ual......................................................... 472K
12V battery See Owner's Man‐
ual......................................................... 437
Û 48 V battery See Owner's Man‐
ual..........................................................4 74
: Active Light Sy stem inoperative... 439
¯ AdBlue sy stem fault Emer. op.:
max. XXX mphSt art not poss. in XXX
miles .................................................... .482
¯ AdBlue sy stem fault Emer‐
ge ncy op. in XXX km See Owner's
Manual.................................................. 481
¯ AdBlue sy stem fault Engine
st art not possible................................. .482
¯ AdBlue sy stem fault See Own‐
er's Manual ............................................ 481
5 Add 1 litre engine oil when
next refuelling....................................... 483
é ATTENTION ASSIST inoperative ....456
é ATTENTION ASSIS T:Take a
break!....................................................4 56:
Automatic driving lights inoper‐
ative...................................................... 438
Á Change key bat teries ...................4 34
J Checkbrake fluid le vel................. 455
5 Check engine oil le vel when
next refuelling....................................... 483
ï Checktrailer hitch lo ck................ 441
h Check tyre(s) ................................ 476
! Clean the fuel filter ...................... 448
J Close boot separator .................... 437
K Convertible Top Operation pos‐
sible to60 km/h................................... 436
ÿ Coolant Stop vehicle Switch
engine off..............................................4 46
! currently una vailable See Own‐
er's Manual ............................................ 467
÷ currently una vailable See Own‐
er's Manual .......................................... .468
5 Engine oil le vel cannot be
measured .............................................. 485 Index
509

5
Engine oil le velRe duce oil le vel.... 484
5 Engine oil le velSt op vehicle
Switch engine off.................................. 484
5 Engine oil pressure Stop
Switch off engine.................................. 485
ä Fault Drive at max. 80 km/h........ 464
6 Front left malfunction Consult
wo rkshop (e xample).............................. 431
_ Front left seat backrest not
loc ked (e xamp le).................................. .445
! inoperative See Owner's Man‐
ual......................................................... 468
÷ inoperative See Owner's Man‐
ual......................................................... 469
T inoperative See Owner's Man‐
ual......................................................... 470
G Inoperative................................... 472
: Intellige nt Light Sy stem inoper‐
ative...................................................... 439 Á
Key not de tected (red displ ay
messa ge)............................................... 435
Á Key not de tected (white displ ay
messa ge)............................................... 434
: Left dipped beam (e xamp le)........ .438
6 Left wind owbag malfunction
Consult workshop (e xample)................ .431
¢ Lowe ring...................................... 465
: Malfunction See Owner's Man‐
ual......................................................... 438
ð Maximum speed exceeded ........... 459
Ø ..................................................... 480
ç Off................................................4 58
ë Off................................................ 456
K Open/close top comple tely.......... 437
! Parking brake See Owner's
Manual .................................................. .451
É Please reduce speed .................... 466
Ý Please wait 48 V battery charg‐
ing ........................................................ .474 _
Rear left seat backrest not
loc ked (Example)................................... 445
h Rectify tyre pressure.................... 477
Ø Refill Ad Blue See Owne r’s
Manual.................................................. 480
! Release parking brake .................. 454
¸ Replace air cleaner ......................448
Á Replace key.................................. 434
8 Reser vefuel le vel......................... 448
6 Restra int sys. malfunction Con‐
sult workshop........................................ 431
# See Owner's Manual....................4 73
Ù Steering malfunction Incre ased
ph ysical ef fort See Owner's Manual ......443
Ù Steering malfunction Stop
immediately See Owner's Manual .........443
# Stop vehicle Lea veengine run‐
ning ........................................................ 474
# Stop vehicle See Owner's Man‐
ual......................................................... 47351 0
Index

É
Stop vehicle Vehicle too low......... 465
ç suspended...................................4 58
: Switch off lights ........................... 439
: Switch on headla mps................... 439
K Top lo wering................................. 436
Ø Top up AdBlue Emergency op.
in XXX miles See Owner's Manual......... 480
+ Top up coolant See Owner ’s
Manual.................................................. 446
¥ Top up washer fluid ...................... 445
! Turn on the ignition torelease
th e parking brake..................................4 55
d Vehicle is operational Switch
off ignition before exiting....................... 441
É Vehicle rising Please wait............ .466
É Vehicle rising................................4 66
h Warning tyre defect..................... .477
h Wheel sensor(s) missing ...............476
K While stationar y,apply the
brakes before operating the soft top.....4 36 Ø
XX,X l Top up AdBlue Switch on
ignition, wait 60 sec. or eng. start
not poss................................................ .481
Ac tive Blind Spot Assi stcur rently
una vailable See Owner's Manual ...........462
Ac tive Blind Spot Assi stinope rative ...... 462
Ac tive Blind Spot Assi stnot available
when towing a trailer See Owner's
Manual .................................................. 463
Ac tive bonnet malfunction See Own‐
er's Manual........................................... 443
Ac tive Brake Assi stFunctions cur‐
re ntly limited See Owner's Manual ........470
Ac tive Brake Assi stFunctions limited
See Owner's Manual.............................. 471
Ac tive Dis tance Assi stavailable again ...4 59
Ac tive Dis tance Assi stcur rently
una vailable See Owner's Manual ...........458
Ac tive Dis tance Assi stinope rative ........ 458 Ac
tive Lane Keeping Assist Camera
view restricted See Owner's Manual..... 463
Ac tive Lane Keeping Assist cur rently
una vailable See Owner's Manual ...........463
Ac tive Lane Keeping Assist inopera‐
tive........................................................ 463
Ac tive Steering Assist cur rently
una vailable due tomultiple emer‐
ge ncy stops...........................................4 60
Ac tive Steering Assist cur rently
una vailable See Owner's Manual ...........459
Ac tive Steering Assist inoperative ......... 459
Ad aptive Highbeam Assist Plus Cam‐
era view restricted See Owner's
Manual.................................................. 440
Ad aptive Highbeam Assist Plus cur‐
re ntly una vailable See Owner's Man‐
ual......................................................... 440
Ad aptive Highbeam Assist Plus inop‐
erative.................................................. .440 Index
511

App
lybrake todeselect Park (P)
position................................................. 449
App lybrake toselect R......................... 449
Au xilia rybattery malfunction (red
display message) ...................................4 51
Au xilia rybattery malfunction (white
display message) ...................................4 51
Beginning eme rgency stop.................... 460
Blind Spot Assist cur rently una vaila‐
ble See Owner's Manual ........................ 461
Blind Spot Assist inope rative ................. 462
Blind Spot Assi stnot available when
to wing a trailer See Owner's Manual .....4 62
Cannot start engine See Owner's
Manual................................................. .475
Check brake pads See Owner's Man‐
ual ........................................................ .455
Che cktyre pressu resth en restart
Ru n Flat Indicator................................. .479
Cruise control and Limi ter inoperative.. 457 Cruise control inoperative..................... 457
Cruise control off.................................. 457
Fr ont-passenger airbag disabled See
Owner's Manual....................................4 32
Fr ont-passenger airbag enabled See
Owner's Manual....................................4 32
Hazard warning lamps malfunctioning.. .441
Limiter inoperative................................ 457
Limiter passive ...................................... 457
Mercedes me connect Services limi‐
te d See Owner's Manual........................4 72
Mo tor can be star ted again.................... 475
N permanently active Risk of vehicle
ro lling .................................................... 449
Only select Park (P) when vehicle is
st ationary.............................................. 448
Pa rking Assist and PARKTRONIC
inoperative See Owner's Manual ...........466
Pa rking Assist Manoeuvring assis‐
ta nce limited See Owner's Manual........ 466 Place
theke y in the mar ked space
See Owner's Manual............................. 435
PRE-SAFE inoperative See Owner's
Manual..................................................4 33
Ra dar sensors dirty See Owner's
Manual................................................... 471
Re duce speed ........................................ 478
Re versing not poss. Consult work‐
shop......................................................4 50
Risk of vehicle rolling Driver door
open and transmission not in P............. 449
Ru n Flat Indicator inope rative............... .479
Speed limit (winter tyres) XXX km/h..... 459
St op vehicle Lea veengine running
Wa itTransmission cooling .....................450
To shift out of P or N,depress brake
and start engine.................................... 449
To switch off the engine, press
St art/ Stop button for at least 3 sec‐
onds or 3 times. ................................... .446 512
Index

Tr
af fic Sign Assi stCamera view
re stricted See Owner's Manual.............. 461
Tr af fic Sign Assi stcur rently una vaila‐
ble See Owner's Manual ........................ 460
Tr af fic Sign Assi stinope rative ................ 461
Tr ansmission Malfunction Stop............. 450
Ty re press. monitor cur rently una vail‐
able ...................................................... .475
Ty re press. monitor inoperative.............4 75
Ty re press. monitor inoperative No
wheel sensors ........................................ 476
Ty re pressure Check tyres .....................479
Ty re(s) ove rheated................................. 478
Wi thout changing gear, consult work‐
shop......................................................4 50
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................................ 75
Locking/unlocking (emergency key)....... 79
Opening (from inside ).............................. 76
Un locking (from inside)............................ 76
Door cont rol panel....................................... 16
Draught stop
Car e...................................................... .367
Dr aw bar
see Tow- bar sy stem
Drive Away Assist ...................................... 218
Drive Away Assist
see Pr otection against collision
Drive position Enga ging................................................1 52
Drive prog ram display ............................... 14 9
Drive prog rams
see DYNA MIC SELECT
Driver's seat see Seat
Driving abroad Light adjustment (low beam)..................1 19Driving saf
ety sy stem
ABS (Anti-lock Braking Sy stem).............1 70
Ac tive Brake Assi st................................ 189
Ad aptive brake lights............................. 174
BA S (Brake Assi stSystem).................... 17 0
Cameras............................................... .168
EBD (Electronic Brake forc e Distribu‐
tion).......................................................1 72
ESP ®
Crosswind Assi st.......................... 171
ESP ®
trailer stabilisation........................ 172
Overview............................................... 16 9
Ra dar and ultrasonic sensor s................ 16 8
Re sponsibility........................................1 68
ST EER CONTROL................................... 172
Driving sy stem
DY NA MIC BODY CONTROL.................... 201
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 Index
513

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)............................................ 11 9
Gene ral driving tips.............................. .142
optimised acceleratio n..........................141
Ru nning-in no tes.................................... 14 0
Dr ow siness de tection
see ATTENTION ASSIST
DY NA MIC BODY CONT ROL
Chassis.................................................. 201
Dynamic handling cont rol sy stem
see ESP ®
(Elect ronic Stability Prog ram)
DY NA MIC SELECT
Configuri ng drive program I................... 15 0Displ
aying engine dat a.......................... 15 0
Displ aying vehicle dat a.......................... 15 0
Drive program display............................ 14 9
Drive programs...................................... 14 8
Fu nction................................................ 14 8
Operating (DYNAMIC SELECT switch)....1 49
Selecting the drive prog ram.................. 14 9
Showing ope ration feedback.................1 50 E
E10.............................................................. 41 8
Easy entry feature
Fu nction/no tes..................................... 107
Setting................................................... 109
Easy exitfeature
Fu nction/no tes..................................... 107
Setting................................................... 109
EBD (Electronic Brake forc e Distribu‐
tion)
Function/no tes...................................... 172
ECO Assist Function/no tes...................................... 147
ECO display Function................................................ 14 6ECO
start/s top function
Au tomatic engine start.......................... 14 5
Au tomatic engine stop...........................1 45
Operation.............................................. 14 5
Switching off/on................................... 14 6
Electric pa rking brake
Applying automaticall y.......................... 16 4
App lying/ releasing manuall y................. 16 6
Emergency braking................................ 16 6
Re leasing automaticall y......................... 16 5
Electrical fuses see Fuses
Electromagnetic compatibility Declaration of conformity........................ 25
Electronic Stability Prog ram
see ESP ®
(Electronic Stability Prog ram)
Emer gency
Fire extinguisher.................................... 373
Fir st-aid kit (so ftsided).........................3 73
Overview of the help functions................ 18
Re moving thewa rning triangle.............. 372
Saf etyve st............................................. 372
Setting up thewa rning triangle............. .373
Emer gency braking ................................... 16 6514
Index

Emer
gency braking
see BAS (Brake Assi stSystem)
Emer gency engine start ............................ 391
Emer gency key
Inserting/removing.................................74
Locking/unlocking the doors.................. 79
Emer gency operation mode
St arting theve hicle...............................1 39
Emer gency spare wheel
No tes..................................................... 41 0
ENERGIZING COMFORT Overview of programmes...................... 268
St arting the programme........................ 268
Engine ECO start/ stop function........................ 14 5
Engine number....................................... 414
St arting (eme rgency operation mode).. .139
St arting (Remo teOnline).......................1 40
St arting (s tart/s top button).................. 13 8
St arting assis tance................................ 384
Switching off (s tart/s top button)...........1 61
Engine bonnet Function (active bonnet)........................ 355 Opening/closing................................... 356
Engine data Displaying.............................................. 15 0
Engine electronics Notes..................................................... 412
Engine number .......................................... .414
Engine oil Additives...............................................4 22
Capacity................................................ 423
Che cking the oil le vel using the oil
dipstick................................................. 358
Checking the oil le vel using the on-
board computer..................................... 359
MB-Fr eigabe or MB-Appr oval................ .423
Quality................................................... 423
To pping up............................................. 359
Entering characters
Fu nction/no tes..................................... 254
On theto uchpad.................................. .256
Using the controller............................... 255
EQ Boost technology
Operating saf ety...................................... 23 ERA-G
LONA SS test mode
St arting/ending.................................... .321
Er ro r message
see Displ aymessa ge
ESC (Electronic Stability Control)
see ESP ®
(Electronic Stability Prog ram)
ESP ®
Crosswind Assis t.................................. .171
Tr ailer stabilisation................................ 172
ESP ®
(Electronic Stability Prog ram)
Ac tivating/deactivating......................... 172
Fu nction/no tes..................................... 17 0
EU general operating permit number ......414
Exterior lighting Care...................................................... 368
Exterior lighting see Lights F
Fa tigue de tection
see ATTENTION ASSIST
Favo urites
Ad ding................................................... 252 Index
515

Calling up.............................................. 252
Deleting................................................. 252
Moving................................................. .252
Overview................................................ 251
Re naming.............................................. 252
Fi lling station sear ch
St arting automatic sear ch..................... 273
Switching the automatic sear chon/
off.........................................................2 79
Using auto matic search......................... 279
Fire extinguisher....................................... 373
Fi rs t-aid kit (soft sided) ............................373
Flat towing
see Tow- bar sy stem
Flat tyre MOEx tended tyres................................. 375
No tes..................................................... 374
TIREFIT kit..............................................3 76
Wheel chang e....................................... .405
Floor mats.................................................. 11 8
Fo g light (enhanced) .................................1 23
Fo il co vering
Ra dar and ultrasonic sensor s................16 8Fo
lding draught stop
Car e...................................................... 368
Fitting...................................................... 85
Re moving............................................... .85
Fr ee software.............................................. 36
Fr equencies
Tw o-w ayradio........................................ 413
Fr ont airbag................................................. 44
Fr ont passenger seat
see Seat
Fu el
Ad ditives................................................ 419
Diesel..................................................... 419
E1 0........................................................ 41 8
Fu elreser ve........................................... 421
Low outside temp eratures..................... 419
Pe trol..................................................... 41 8
Quality (diesel )....................................... 419
Quality (petrol)....................................... 41 8
Re fuelling.............................................. 15 5
Sulphur content..................................... 41 8
Ta nk content.......................................... 421
Fu nction seat
see Door cont rol panel Fu
ses
Before replacing a fuse.......................... 391
Fu se assignment diagram...................... 391
Fu se box in the boot.............................. 394
Fu se box in the engine compartmen t.... 392
Fu se box in the front passenger foot‐
we ll....................................................... .394
Fu se box on the dashboard................... 393
No tes..................................................... 391 G
Garage door opener Cleari ngthe memory.............................1 64
Programming buttons............................ 16 2
Re solving problems...............................1 64
Synchronising thero lling code............. .163
Garage door openers Opening/closing the door.....................1 64
Gearshift recommendation..................... .153
Gene ral operating permit number (EU)... 414
Genuine parts.............................................. 22
Genuine wood (Care) ................................ 369
Glide mode................................................ .154 516
Index

H
Handbrake see Electric parking brake
Handling characteristics (unusual)......... 395
Hazard warning lights.............................. .121
HD prog rammes
see CI+ module
Head airbag ................................................. 44
Head le vel heating (AIRSCARF) ................105
Head restra int
Fr ont (adjusting mechanically)..............1 00
Re ar (fitting/removing)......................... .101
Head-up display Adjusting display elements (on-board
compu ter).............................................. 231
Ad justing the brightness (on-board
computer).............................................. 231
Fu nction................................................ 230
Menu (on-board compu ter).................... 231
Operating the memory function.............1 10
Setting the position (on-board com‐
puter)..................................................... 231
Switching on/of f................................... 231 Headlamp
flashing..................................... 121
Headlamps see Automatic driving lights
Heating see Climate control
Help call see Mercedes-Benz emergency call sy stem
High beam Activating/deactivating......................... 121
Ad aptive Highbeam Assist Plus.............. 124
High-pressure cleaner (care).................. .364
Hill Start Assist......................................... .174
HOLD function Function/no tes...................................... 173
Switching on/of f................................... 173
Hooking the luggage net .......................... .115
Hotspot Setting up (Wi-Fi).................................. .260 I
i-Size child seat securing sy stem
Fitting..................................................... .62Seats suitable
for attaching..................... 62
Identification plate Engine................................................... .414
Ve hicle................................................... 414
Ignition Swit ching on (S tart/S top button).......... 137
Ignition key
see Key
Immobiliser .................................................. 92
Implied warranty
Ve hicle.................................................... 32
In Car Of fice
Calling up.............................................. 308
Fe atures................................................ 307
Marking a to-do entry as compl eted...... 308
Noting an incoming call......................... 308
Selecting functions............................... .308
Switching auto maticstart on/of f.......... 308
Increase in traf fic information volume
Setting................................................... 343
Indicator lamp see Warning/indicator lamp Index
517