2021 MERCEDES-BENZ C-CLASS CABRIOLET maintenance

R
Do not use a mic rofibre clo th.
% Leather is a natural product. It has natural
sur face prope rties, such as dif fere nces in
st ru cture, mar kscaused bygrow thand
injury or subtle colour dif fere nces.
Genuine leather seat co vers
R Clean with a damp clo thand then wipe with a
dry clo th.
R Leather care: use a leath er care agentthat
has been recommended for Mercedes-Benz.
R Do not allow th e leathertobecome too
damp.
R Do not use a microfibre clo th.
DINAMICA seat co vers
R Clean with a damp clo th.
R Do not use a mic rofibre clo th.
Imitation leather seat co vers
R Clean with a damp clo thand 1% soapy water.
R Do not use a mic rofibre clo th. Fa
bric seat co vers
R Clean with a damp mic rofibre clo thand 1%
soapy water and allow todry. Maintenance and care
371

#
Only inter change the front and rear
wheels if the wheels and tyres ha vethe
same dimensions. Inter
changing the front and rear wheels if the
wheels or tyres ha vediffere nt dimensions can
re nder thege neral operating pe rmit in valid.
The wear pat tern s on the front and rear wheels
dif fer:
R front wheels wear more on the tyre shoulder
R rear wheels wear more in the cent reofthe
tyre
Do not drive wi thtyres that ha vetoo little tread
dep th. This significantly reduces traction on wet
ro ads (aquaplaning).
On vehicles with the same front and rear wheel
size, you can inter change the wheels every
5000 to10,000 km, depending on thewe ar.
Ensure the direction of rotation is maintained for
th e wheels.
Obser vethe instructions and saf ety no tes on
"Changing a wheel" when doing so
(/ page 405). Note
s onstoring wheels When
storing wheels, obser vethefo llowing
no tes:
R Afterre moving wheels, store them in a cool,
dry and preferably dark place.
R Protect the tyres from conta ct withoil,
grease or fuel. Overview of
the ty re-change tool kit *
NO
TEMercedes-AMG vehicles #
Obser vethe no tes in the Supplement.
Yo u could otherwise failto recognise
dangers. Apa
rtfrom some countr y-specific variants, vehi‐
cles are not equipped with a tyre-change tool kit.
Fo r more information on which tyre-changing
to ols are required and appr oved for per form ing a
wheel change on your vehicle, consult a qualified
specialist workshop. Yo
ure qu ire thefo llowing tools, forex ample, to
ch ange a wheel:
R Jack
R Chock
R Wheel wrench
R Cent ring pin
% The jack weighs appr oximately 2.1 kg.
The maximum load capacity of the jack can
be found on thest icke r af fixe dto the jac k.
The jack is maintenance-free. If there is a
malfunction, please conta ct aqualified spe‐
cialist workshop.
The tyre-change tool kit is located in tool bag 1
in the boot.
% Depending on theve hicle equipment, the
to ol bag may be located at other positions in
th e boot. 404
Wheels and tyres

Note
s ontech nical data
* NO
TEMercedes-AMG vehicles #
Obser vethe no tes in the Supplement.
Yo u could otherwise failto recognise
dangers. The
tech nical da tawa s de term ined in accord‐
ance with EU Directives. The data stated on ly
applies tovehicles with standard equipment. Yo u
can obtain fur ther information from a Mercedes-
Benz Service Centre.
Only for ce rtain countries: you can find vehi‐
cle-specific vehicle data in the COC documents
(CERTIFIC ATE OF CONFORMITY). These pape rs
are included with theve hicle. On-board electronics
Note
s on tampering with the engine elec‐
tronics *
NO
TEPremature wearthro ugh improper
main tenance Improper maintenance may cause
vehicle
components towe ar more quickly and the
ve hicle's operating permit may be in valida‐
te d. #
Alw ays ha vewo rkon the engine elec‐
tronics and related components car ried
out at a qualified specialist workshop. Tw
o-w ayradios Note
s onfitting two-w ayradios &
WARNING Risk of accident due to
improper workon two-w ayradios
If two-w ayradios are manipulated or retrofit‐
te d incor rectl y,the electromagnetic radiation
from the two-w ayradios can inter fere with th
eve hicle electronics and jeopardise the
operating saf ety of theve hicle. #
You should ha veall workon electrical
and electronic components car ried out
at a qualified specialist workshop. &
WARNING Risk of accident from incor‐
re ct ope ration of two-w ayradios
If yo u use two- wayra dios in theve hicle
improperly, their electromagnetic radiation
can disrupt theve hicle's electronics. This is
true in thefo llowing situations, in particular:
R The two-w ayradio is not connec tedto an
ex terior aerial.
R The exterior aerial is fitted inco rrectly or
is not a lo w-reflection aerial.
This could jeopardise the operating saf ety of
th eve hicle. #
Have the lo w-reflection exterior aerial
fi tted at a qualified specialist workshop. 412
Tech nical da ta

#
Do not al terth e engine oil or oil filter in
order toachie velonger change inter vals
th an presc ribed. #
Do not use additives. #
Have the engine oil rene we d at regular
inter vals. Mercedes-Benz
recommends that you ha vethe
oil change car ried out at a qualified specialist
wo rkshop.
Only use engine oils appr oved byMercedes-
Benz.
Pe trol engines: for cer tain countries, dif fere nt
engine oils can be used in conjunction wi th
re duced maintenance inter vals.
% Further information on dif fere nt engine oils
can be ob tained at a qualified specialist
wo rkshop. Quality and capacity of engine oil Pe
trol engine sM B-Freigabe or MB-
Appr oval
C 400 4MATIC 229.5
229.6*
All other models 229.51 , 229.52,
229.61
229.71* Diesel engines MB-
Freigabe or MB-
App roval
All model s2 29.52, 229.61
229.71* *
re commended for lo west possible fuel con‐
sum ption (lo westSA E viscosity class in ea ch
case; obser vepossible restrictions of the
appr ovedSA E viscosity classes)
To achie vethe lo west possible fuel consum ption,
it is recommended touse the engine oil specifi‐
cations mar ked in theta ble forth e lo west SAE viscosity class.
Possible restrictions of the
appr ovedSA E viscosity classes mu stbe
obser ved.
% Ifth e engine oils lis ted in theta ble are not
av ailable, you may add a maximum of
1. 0 litr e ofthefo llowing engine oils once
onl y.
Engine oils for one-time filling only in exceptional
cases:
R vehicles with a petrol engine:
- C 400 4MATIC: MB-Freigabe or MB-
Appr oval 229.3 or ACEA A3/B4
- allother models: MB-Freigabe or MB-
Appr oval 229. 31orAC EA C3
R vehicles with a diesel engine: ACEA C3
The following values referto an oil change,
including the oil filter. Te
ch nical da ta423

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

St
arting (Remo teOnline).......................1 40
St arting (s tart/s top button).................. 13 8
SV HC (subs tances of very high con‐
cern)........................................................ 31
Switching off (s tart/s top button)...........1 61
To wing.................................................. .225
Ve ntilating (co nvenience opening)........... 90
Vo ice commands (LINGU ATRO NIC)....... 24 4
Ve hicle camera
Information............................................ 16 8
Ve hicle data
Displ aying (DYNAMIC SELECT).............. 15 0
Ro of load............................................... 427
Tr ans ferring toAndroid Auto.................. 313
Tr ans ferring toApple CarPl ay®
.............. 313
Ve hicle height........................................4 26
Ve hicle length........................................4 26
Ve hicle width.........................................4 26
Wheelbase............................................. 426
Ve hicle dimensions ................................... 426
Ve hicle identification number
see VIN
Ve hicle identification plate
EU general operating pe rmit number.... .414 Pa
int code............................................. .414
Pe rm issible axle load............................ .414
Pe rm issible gross mass......................... 414
VIN.........................................................4 14
Ve hicle interior
Cooling or heating (Remo teOnline).......1 39
Ve hicle key
see Key
Ve hicle location
Ac tivating/deactivating transmission.... 258
Ve hicle maintenance
see ASS YST PLUS
Ve hicle sensors
Information............................................ 16 8
Ve hicle tool kit
TIREFIT kit............................................. .376
To wing eye............................................ 390
Ve ntilating
Con venience opening.............................. 90
Ve ntilation
see Climate cont rol
Ve nts
see Air vents Vi
deo mode
Ac tivating.............................................. 333
Ac tivating/deactivating full-screen
mode..................................................... 334
Overview............................................... 334
Setting s................................................. 335
VIN Identification plate................................. 414
Seat....................................................... 414
Wi ndsc reen............................................ 414
Vi sion
Demisting windo ws............................... 13 4
Vo ice command types (LINGUA‐
TRONIC)...................................................... 233
Vo ice control sy stem
see LINGU ATRO NIC W
Wa rning lamp
see Warning/indicator lamp
Wa rning sy stem
see ATA (anti-theft alarm sy stem) 536
Index