2021 MERCEDES-BENZ C-CLASS CABRIOLET engine

Anti-theft pr
otection
Ad ditional door loc k................................ 75
Immobiliser............................................. 92
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 ®
.........................3 10
Ending.................................................... 311
No tes..................................................... 310
Overview................................................ 310
Sound settings....................................... 311
Tr ans ferred vehicle data........................3 13
Assistance sy stems
see Driving saf ety sy stem
ASS YST PLUS
Battery disconnection pe riods.............. 355
Displaying the service due dat e............. 354
Fu nction/no tes..................................... 354
Re gular maintenance work.................... 354 Special service
requirements............... .354
ATA (anti-theft ala rmsystem)
Deactivating the alarm............................ 93
Fu nction.................................................. 92
Fu nction of interior pr otection................. 93
Priming/deactivating interior pr otec‐
tion..........................................................94
Priming/deactivating tow- aw ay pro‐
te ction..................................................... 93
To w- aw ay protection function.................. 93
AT TENTION ASSI ST
Fu nction................................................. 174
Setting................................................... 176
Sy stem limitations................................. 174
At tention assistant
see ATTENTION ASSIST
Au dio mode
Connecting USB device s....................... 331
Co pyrights............................................. 329
Information............................................ 327
Inserting/re moving an SD car d............. 329
Media sea rch........................................ .335
Overview............................................... 331
Pa use and playback function................ .332 Selecting a track................................... 332
Selecting playba
ckoptions.................... 332
Switching on media mode..................... 329
Tr ack list............................................... .332
Au thorised workshop
see Qualified specialist workshop
Au tomatic distance control
see Active Dis tance Assi stDISTRONIC
Au tomatic driving lights ...........................12 0
Au tomatic engine start (ECO start/
sto p function)............................................ 14 5
Au tomatic engine stop (ECO start/
sto p function)............................................ 14 5
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 Index
503

City lighting
................................................ 124
Cleaning see Care
Climate control Activating/deactivating the A/C
function (cont rol panel)........................ .134
Ac tivating/deactivating the synchro‐
nisation function (cont rol panel)............ 13 4
Air-reci rculation mode.......................... .134
Au tomatic control.................................. 13 4
Demi sting the windscreen..................... 13 3
Demi sting windo ws............................... 13 4
Fr ont air vents....................................... 13 5
Ionisation............................................... 13 4
No te...................................................... 13 3
Re ar air vents....................................... .135
Setting the air distribution..................... 13 3
Setting the air flow ................................. 13 3
Setting theve hicle interior temp era‐
ture........................................................ 13 3
Switching on/of f................................... 13 3
Switching there ar wind owheater
on/off...................................................1 33
THERMATIC control pane l...................... 13 3
THERMOTRONIC contro l panel..............133 Ve
ntilating theve hicle (con venience
opening).................................................. 90
Co ckpit
Overview................................................... 6
Co ffee cup symbol
see ATTENTION ASSIST
Collision de tection (pa rked vehicle)
Information............................................ 16 6
COMAND Online see Multimedia sy stem
COMAND Touch
Managing devices.................................. 261
Combination switch .................................. 121
Compass................................................... .294
Compu ter
see On-board computer
Connection status
Displ aying.............................................. 325
Overview............................................... 325
Contacts Calling up.............................................. 304
Deleting................................................. 305
Downloading (from mobile phone)........ 303 Importing.............................................. 304
Importing (o
verview)............................. 304
Information........................................... .303
Making a call......................................... 305
Na me form at......................................... 304
Options................................................ .305
St oring..................................................3 05
Controller Operating.............................................. 24 9
Con venience closing ................................... 90
Con venience opening ..................................90
Coolant (engine) Check le vel............................................ 361
No tes..................................................... 424
Cooling see Climate control
Co pyright..................................................... 36
Cornering light ...........................................1 22
Cross Traf fic Alert..................................... .218
Crosswind Assist Function/no tes...................................... 171 Index
507

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

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

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