2021 MERCEDES-BENZ C-CLASS COUPE maintenance

#
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 409). 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 under the
boot floor.
% Depending on the model, the tyre change
to ol kit may be located at other positions
under the boot floor. 408
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. 416
Tech nical da ta

Ad
Blue ®
filling capacity and consum ption Model
Total capacity
All models 25 litres Ad
Blue ®
consu mption
The average AdBlue ®
consu mption is between
1% and 5% of fuel consumption. Li kefuel con‐
sum ption, AdBlue ®
consu mption is highly
dependent upon driving style and operating con‐
ditions. Forth is reason, your vehicle's actual
consum ption figures under da y-to -day ope rating
conditions may di ffer from the consum ption fig‐
ures calculated. The frequency at which you will
ha ve to to p up AdBlue ®
will also vary. Ha vethe
Ad Blue ®
supply checked at a qualified specialist
wo rkshop before making journe ysoutside of
Europe. Before a longer stay outside of Europe,
consult a qualified specialist workshop.
Ad Blue ®
ra nge and fill le vel
The AdBlue ®
fill le vel and range can be displ ayed
via the on-board computer. The AdBlue ®
ra nge
shown depends strongly on the driving style and
operating conditions. The actual range can th
erefore deviate from thera nge cur rently dis‐
pl ay ed in the on-board computer. The informa‐
tion supplied in the Owner's Manual rega rding
th ere ser vequantity at thefirs t display warning
and on the minimum top-up quantity when the
fuel tank is em pty is also tobe under stood as
guide values. Engine oil
Note
s on engine oil
Obser vethe no tes on operating fluids
(/ page 420). *
NO
TEEngine dama gecaused byan
incor rect oil filter, incor rect oil or addi‐
tives #
Do not use engine oils or oil filters
which do not cor respond tothe specifi‐
cations explicitly prescribed forthe
service inter vals. #
Do not alter the 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. 426
Tech nical da ta

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 ®
.......................... 317
Ending.................................................... 318
No tes..................................................... 317
Overview................................................ 317
Sound settings....................................... 318
Tr ans ferred vehicle data........................3 20
Assistance sy stems
see Driving saf ety sy stem
ASS YST PLUS
Battery disconnection pe riods.............. 362
Displaying the service due dat e............. 361
Fu nction/no tes...................................... 361
Re gular maintenance work.................... 361
Special service requirements............... .361
ATA (anti-theft ala rmsystem)
Deactivating the alarm............................ 92 Fu
nction.................................................. 91
Fu nction of interior pr otection................. 93
Priming/deactivating interior pr otec‐
tion.......................................................... 93
Priming/deactivating tow- aw ay pro‐
te ction..................................................... 93
To w- aw ay protection function.................. 92
AT TENTION ASSI ST
Fu nction................................................. 181
Setting................................................... 183
Sy stem limitations................................. 181
At tention assistant
see ATTENTION ASSIST
Au dio mode
Connecting USB device s....................... 338
Co pyrights............................................. 336
Information............................................ 334
Inserting/re moving an SD car d............. 336
Media sea rch........................................ .342
Overview............................................... 338
Pa use and playback function................ .339
Selecting a track................................... 339
Selecting playba ckoptions.................... 339
Switching on media mode..................... 336
Tr ack list............................................... .339 Au
thorised workshop
see Qualified specialist workshop
Au tomatic distance control
see Active Dis tance Assi stDISTRONIC
Au tomatic driving lights ...........................12 2
Au tomatic engine start (ECO start/
sto p function)............................................ 15 2
Au tomatic engine stop (ECO start/
sto p function)............................................ 15 2
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
Au tomatic mir rorfo lding function
Ac tivating/deactivating......................... 13 4
Au tomatic transmission
DIRECT SELECT le ver............................. 157 Index
505

M
Maintenance see ASS YST PLUS
Malfunction Restra int sy stem..................................... 38
Manoeuvring assistant Activating/deactivating......................... 226
Cross Traf fic Alert................................. 225
Drive AwayAssi st.................................. 225
Map Avoiding an area....................................2 99
Av oiding an area (o verview).................. .299
Changing an area.................................. 299
Deleting an area.................................... 300
Displ aying online map con tents............ 302
Displaying Qibla..................................... 301
Displaying the compass......................... 301
Displaying the map version.................. .299
Displ aying the next intersecting stre et.. 298
Displaying the satellite map.................. 302
Displaying the tra ffic map.................... .294
Displ aying weather information............ .302
Map data............................................... 300
Moving.................................................. 297 Overview..............................................
.296
Selecting POI symbols........................... 298
Selecting text information..................... 298
Selecting the map orientation............... 298
Setting the map scale............................ 297
Setting the map scale automaticall y...... 301
Up dating............................................... 300
Map and compass Overview............................................... 296
Massa geprog rammes
Re setting the settings............................1 01
Selecting the front seats........................ 101
Matt finish (cleaning instructions) ..........371
Maximum gross vehicle weight ................ 41 8
Maximum speed see Limiter
MBUX multimedia sy stem
Ad justing thevo lume............................ .261
Calling up applications.......................... 258
Collision de tection (pa rked vehicle).......1 73
Re setting (factory setting)..................... 274
Setting the fragrance sy stem.................1 37
Switching ionisation on/of f................... 137
Switching the sound on/of f.................. 260 Mecca......................................................... 301
Media Searching..............................................3 42
Media display Notes....................................................2 54
Media Inter face
Ac tivating.............................................. 343
Information............................................ 342
Overview.............................................. .343
Media mode Activating.............................................. 336
Media sear ch
St arting................................................. 342
Medical aids................................................ .32
Memory function Function................................................ 107
Head-up display — Calling up stored
settings................................................. 108
Head-up display — Storing settings........ 108
Operating..............................................1 08
Outside mir rors — Calling up stored
settings................................................. 108
Outside mir rors —St oring settings........ 108 Index
523

V
Ve hicle
Ac tivating/deactivating standby mode. .174
Ad ditional door loc k................................ .74
Collision de tection (pa rking).................. 173
Cor rect use.............................................. 31
Data acquisition...................................... 33
Data storage............................................ 33
Diagnostics connection...........................29
Equipment............................................... 23
Implied warrant y..................................... 32
Locking (automatically). ..........................77
Locking/unlocking (emergency key)....... .78
Locking/unlocking (from inside )............. 75
Locking/unlocking (KEYLESS-GO)...........76
Lo we ring................................................ 413
Medical aids............................................ 32
Pa rking up.............................................. 174
QR code rescue card............................... 33
Qualifi ed specialist workshop.................. 31
Ra ising.................................................. .410
REA CHregulation.................................... 31
Re gistration............................................. 31
St andby mode function.......................... 174
St arting (eme rgency operation mode).. .146 St
arting (Remo teOnline).......................1 47
St arting (s tart/s top button).................. 14 5
SV HC (subs tances of very high con‐
cern)........................................................ 31
Switching off (s tart/s top button).......... 16 8
To wing.................................................. .232
Ve ntilating (co nvenience opening)........... 86
Vo ice commands (LINGU ATRO NIC)........2 51
Ve hicle camera
Information............................................ 175
Ve hicle data
Displ aying (DYNAMIC SELECT).............. 157
Ro of load............................................... 430
Tr ans ferring toAndroid Auto................. 320
Tr ans ferring toApple CarPl ay®
.............. 320
Ve hicle height........................................4 29
Ve hicle length........................................4 29
Ve hicle width.........................................4 29
Wheelbase............................................. 429
Ve hicle dimensions ................................... 429
Ve hicle identification number
see VIN
Ve hicle identification plate
EU general operating pe rmit number.... .418 Pa
int code............................................. .418
Pe rm issible axle load............................ .418
Pe rm issible gross mass......................... 41 8
VIN.........................................................4 18
Ve hicle interior
Cooling or heating (Remo teOnline).......1 46
Ve hicle key
see Key
Ve hicle location
Ac tivating/deactivating transmission.... 265
Ve hicle maintenance
see ASS YST PLUS
Ve hicle sensors
Information............................................ 175
Ve hicle tool kit
TIREFIT kit............................................. 380
To wing eye............................................. 394
Ve ntilating
Con venience opening.............................. 86
Ve ntilation
see Climate cont rol
Ve nts
see Air vents 538
Index