tow MERCEDES-BENZ C-CLASS COUPE 2021 Repair Manual

*
NO
TEDama getotheve hicle dueto
inc orrect useof theto wing eye When
ato wing eyeis used toreco vera ve hi‐
cle, theve hicle maybe damag edinthepr oc‐
ess. #
Onlyuse theto wing eyeto tow aw ay or
to w star tth eve hicle. To
w star ting theve hicl e(eme rgency engine
st ar t) Ve
hicl eswith automatic transmiss ion
* NO
TEDama getotheaut omatic trans‐
mission duetotow star tin g The
automat ictransm issionma ybe damag ed
in thepr ocess oftow star tin gve hicles with
aut omatic transmission. #
Vehicles withaut omatic transmission
mus tno tbe tow star ted. #
Vehicles withaut omatic transmission must
no tbe tow- star ted. Electr
icalfuses No
teson electr icalfuses &
WARNIN GRisk ofacci dent andinjury
due tooverloaded lines
If yo uman ipulat eor bridg eafa ulty fuse orif
yo ure place itwit hafuse withahigher
am per age, theelectr icline could beove rloa‐
ded.
This could result inafire . #
Alw aysre place faulty fuseswit hspec i‐
fi ed newfuses containin gth ecor rect
am per age. *
NO
TEDama gedue toinc orrect fus es Electr
icalcom pone ntsorsystems maybe
damag edbyinc orrect fus es, ortheir func ‐
tion ality maybe signif icantlyim pair ed. #
Onlyuse fuses that have been approved
by Mer cedes-Ben zand whic hha ve the
cor rect fus era ting . Blo
wn fuse smu stbe replaced withfuses ofthe
same rating ,wh ich yo ucan recogni zeby the
colo rand thelabeling. Thefuse rating sand fur‐
th er information tobe obser vedcan befound in
th efuse assignmen tdiagr am.
Fu se assignment diagram: onthefuse boxin
th etrunk (/page356).
* NO
TEDama geormalfunct ionscaused
by mois ture Mois
turema ycause damagetotheelectr ical
sy stem orcause itto malfu nction. #
When thefuse boxis open, makesur e
th at no mois turecan enterthefuse
bo x. #
When closing thefuse box,mak esur e
th at theseal ofthelid isposition edcor‐
re ctly onthefuse box. If
th ene wlyinser tedfuse alsoblows,ha ve the
cau setrace dand rectif ied at aqu alif ied spec ial‐
is two rkshop.
Ensur eth efo llo wing beforere placing afuse:
R The vehicle issecur edagains tro lling away. Br
ea kdo wnassista nce 35
3

R
Maximum permissible load3com prises the
gr os swe ight ofall vehicle occupants, load
and luggage.
R Recomme ndedtirepr ess ure 1forcold
tir es. The recomme ndedtirepr ess ures are
va lid forth emaximum permissible loadand
up tothemaximum permissible vehicle
speed.
Please alsonote:
R Information onper missib lewe ight sand loads
on theve hicle identif ication plate
(/ page390).
R Information ontirepr essur ein thetir epr es‐
sur eta ble (/ page360).
Fu rther relat ed subje cts:
R Determ inin gth emaximum permissible load
(/ page366)
R Noteson tirepr essur e(/ page358). Ste
psforDe term ining Correct Load Limit The
follo wing steps have been developed as
re qu ired ofall manuf acturersunder Title 49, Co
de ofU.S. Feder alRe gulations, Part57 5, pur‐
sua nttothe"N ational Traf fic and MotorVe hicle
Saf etyAc tof 1966". #
(1):Locat eth est at emen t"The combined
we ight ofocc upant sand cargoshould never
exc eed XXX kgorXXX lbs." onyour vehicle's
placar d. #
(2): Determ ine thecombin edweight ofthe
dr iver and passeng ersth at will beriding in
yo ur vehicle. #
(3): Subtr actthecombin edweight ofthe
dr iver and passeng ersfrom XXX kgor
XXX lbs. #
(4): The resulting figur eeq uals theav ailable
amoun tof car goand luggageload capac ity.
Fo rex am ple, ifth e"XXX" amount equals
14 00 lbs. and ther ewill befive occupant s
15 0lb pas seng ersin your vehicle, the
amoun tof available cargoand luggageload
capac ityis65 0lbs. (140 0-75 0(5 x15 0) =
650 lbs.) #
(5):De term ine thecombin edweight oflug‐
ga ge and cargobein gloaded ontheve hicle.
That weight mayno tsaf elyexc eed theav aila‐ ble
cargoand luggageload capac itycalc ula‐
te din step 4. #
(6): Ifyo ur vehicle willbetowing atrailer ,
load from your trailer willbetrans ferred to
yo ur vehicle. Consult this manual todeter‐
mine howthis reduces theav ailable cargo
and luggageload capac ityofyour vehicle.
% Notall vehicles areper mitt edtotow a
trailer .To wing atrailer isonl yper mittedifa
tra iler -hit chisins talled. Please consult an
aut hor ized Mercedes -Benz dealer ifyo uha ve
an yqu estion sabout towing atrailer with
yo ur vehicle.
Ev en ifyo uha ve cal cul ated thetot alload care‐
full y,yo usho uld still mak esur eth at themaxi‐
mum permissible gross weight andthemaxi‐
mum gross axle weight rating ofyour vehicle are
no texc eeded. Details can befound ontheve hi‐
cle identif ication plate. 366
Wheels andtires

*
NO
TEPrema ture wearthro ugh unleaded
re gular gasoline Un
leade dre gular gasoline cancause the
engine towe armor equ ickl yand impair lon‐
ge vity and perform anc e.
If unle aded premium grade gasoline is
una vailable andyouha ve torefuel using
unle adedre gular gasoline: #
Onlyfill th efuel tank tohalf fullwith
unleaded regular gasoline andrefill as
soon aspossible withunleaded pre‐
mium grade gasoline. #
Donotdr ive at themaximum design
speed. #
Avoid sudden accelerationengine
speeds over3000 rpm. Fu
rther information onfuel isavailable atthefo l‐
lo wing locations:
R ataga sst atio n
R ataqu alif ied spec ialistwo rkshop
R onthehtt ps:/ /www .mbusa.c om(USAonl y) No
teson add itivesingasoline
Obser vetheno teson oper ating fluids
(/ page39 1).
* NO
TEDama gefrom use ofunsu itabl e
add itives Ev
en smal lamou ntsofthewr ong additiv e
ma ylead tomalfu nctions occurring. #
Only addcle ani ng additiv es recomme n‐
ded byMer cedes-Ben zto thefuel. Mer
cedes- Benzrecomme ndsthat youuse
br and -name fuels withaddit ives.
In som eco unt ries, thefuel available mayno t
ha ve suf ficie ntadditiv es. Residue could buildup
in thefuel injec tionsystem asare sult. Inthis
case, incon sult ation withan aut hor ized
Mer cedes -Benz Cent er,mix thefuel withth e
cle ani ng additiv ere comme ndedbyMer cedes-
Benz .Obser vetheno tesand mixing ratio sind i‐
cat edon theta nk .
Ta nk cont entand reser vefuel
The totalcapac ityofthefuel tank mayva ry,
dependin gon theve hicle equipment. Capacity Model
Total cap acity
Al lmo dels 17.4 gal(66. 0liter s) Model
ofwhic hre ser ve
fuel
All model s1 .8gal(7 .0 liter s) Engine
oil No
teson engine oil
Obser vetheno teson oper ating fluids
(/ page39 1). 39
4
Tech nica lda ta

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions
To appl y: #
Swi tchth eignition off.
The electr icpar king brak ewill beapplied automaticall y.
If yo udo notwa nttheelectr icpar king brak eto be applied, e.g.atan aut omatic carwash orwhen theve hicle is
being towe d,lea vetheignition switchedon.This does notinclude having theve hicle towe dwit hth ere ar axle
ra ised.
If th eelectr icpar king brak eis no tapplied automaticall y: #
Switc hth eignition offand switc hit bac kon. #
Release andthen apply theelectr icpar king brak emanuall y(/ page15 2).
If it is still no tpossible toappl yth eelectr icpar king brak e: #
Consult aqu alif ied spec ialistwo rkshop. #
Wher enecessar y,also secureth epar kedve hicle agains tro lling away.
To release: #
Ifth econ ditions forau tomatic release arefulf illed andtheelectr icpar king brak eis no tre leased automat ically,
re lease theelectr icpar king brak emanuall y(/ page15 2).
If it is still no tpossible torelease theelectr icpar king brak e: #
Donotcon tinue driving. Consult aqu alif ied spec ialistwo rkshop. 420
Displa ymessag esand warning/ indic ator lam ps

Ins
tallation locations...............................4 2
Knee airbag.... .........................................4 2
Ov ervie w.. ......... ................................. ..... 42
PA SSENGER AIRBAGind icat orlam p....... 47
Pr otect ion.......................................... ...... 43
Side airbag ..............................................4 2
Wi ndo wcur tain airbag .............................4 2
Air flow
Se tting. .................................................. 124
AIRM ATIC
Se tting.. .................................................1 88
Suspe nsion........... ............................ ..... 187
Alar m
see Panic alar m
Al ar m system
see ATA(anti-t heftal ar m system)
All-wheel drive
see 4MA TIC
Alt ernativ ero ute
see Route
Amb ientlighting
Se tting (mult imediasystem).. ................1 17 Andr
oidAuto
Con necting amob ilephon e...................2 87
Endi ng............ ............. .......................... 287
Inf orma tion.............. .......................... ....287
Ov ervie w............... ................................286
Sou ndsetting s.<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011> 287
Tr ans ferred vehicle data........................2 88
Ani mals
Pe ts intheve hicle .............................. ..... 62
Anti-loc kbr aking system
see ABS(An ti-loc kBr akin gSy stem)
Anti-skid chains
see Snowch ains
Anti -thef tpr otection
Imm obiliz er...................................... ........ 83
Anticip ator yoccupa ntprotection
see PRE- SAFE®
(anticip ator yoccu‐
pa nt protect ion)
see PRE-S AFE®
PL US (antic ipatory
occupant protect ion plus)
Apple CarPla y®
Connec tinganiPhone ®
... ......................2 85
Ending ...................................................286 No
tes... .................................................2 85
Ov ervie w.......... .....................................284
Sound settings ......................................286
Tr ans ferred vehicle data........................2 88
Ass istan cesystems
see Drivin gsaf etysy stem
ASS YSTPL US
Batt erydi sconne ctionpe riods..... ......... 322
Displa yingtheser vice duedate............. 321
Fu nctio n/no tes.<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011> 321
Re gular maint enance work<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011> 321
Spec ialser vice requ iremen ts................3 21
ATA (anti-thef tala rm system)
Ac tivati ng/d eactiv ating theint erior
mo tion sensor.. ....................................... 85
Ar ming/ disarming theto w- aw ay alar m...8 4
Dea ctivating thealar m............................ 84
Fu nctio n...<0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011> 83
Fu nctio nof theint erior motion sensor.... 84
The tow- aw ay alar mfun ction ...................8 4
AT TENTI ONASSIST
Fu nctio n...<0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011> 160
Se tting <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011> 162
Sy stem limit ations. ................................ 160 Inde
x465

Sel
ecting acont act<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011001100110011001100110011> 253
Sel ecting aPOI <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011> 251
Sel ecting from themap.... ..................... 254
Select ingprev ious destination s.............2 50
De tectin ginat tentiv eness
see ATTENTION ASSIST
Diagnos ticsconnec tion.............................. 26
Digit alOper ator's Manua l... ....................... 20
Dingh yto wing
see Tow- bar system
DIRECT SELECT leve r
Eng aging drive po sitio n............ .............142
Eng aging neutr al....... .............................141
Eng aging park position .......................... 142
Eng aging park position automatic ally....1 42
Eng aging reve rsege ar. ...........................1 41
Fu nctio n...<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011>140
Disp lay(car e).............................................3 33
Di spla y(multime diasystem)
Se ttings. .......................................... ...... 234
Displa y(on-boa rdcom puter)
Dis play son themultifunc tiondispla y.... 208 Di
spl aymes sage
Ca lling up(on-bo ardcom puter)..... ........ 401
No tes... ............................................. ..... 401
Displa ymessag es
00B2 ---mp h<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> 424
ç ---mp h<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> 424
003D 12VBatt erySee Oper ator's
Manual..... .............................................4 38
: ActiveHea dlamps Inoperati ve...... 408
é ATTENTION ASSISTInoper ative... .4 23
é ATTENTION ASSIST: Take a
Br ea k!<0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011>........424
: Automatic HeadlampMode
Inoper ative....... ..................................... 407
0027 CheckBr ak eFlui dLe vel............... 422
0026 CheckBr ak ePa ds See Oper a‐
to r's Manua l......... ................................. 423
00BD CheckCool antLevelSee Oper‐
at or's Manual .........................................4 13
00B3 CheckEn gin eOil AtNe xtRe fu‐
eli ng. ...... ............................................... 445 00B3
CheckEn gin eOil Level(A dd 1
qu art).................................................... 446
: CheckLef tLo wBeam (exa mp le).. 407
0077 CheckTire s<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011> 441
00B2 CheckWa sher Fluid... ...................4 13
ÿ Coolan tTo oHo tSt op Vehicle
Tu rn Engi neOff............ ..........................414
0025 Currentl yUna vailable See
Opera tor's Manua l........ ........................ 433
00E5 Current lyUn available See
Operat or'sMan ual................................4 34
Á Don't Forget Your Key<0011001100110011001100110011001100110011001100110011001100110011
00110011> 406
00CC Drive More Slowly<0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> 432
00B3 Engine OilLevelCann otBe
Mea sured<0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011>....448
00B3 EngineOilLe velLo wStop Vehi‐
cle Turn Engi neOff............ ....................446
00B3 EngineOilPr es su re Stop
Switc hOf fEngin e... ...............................4 47
00B3 EngineOilRe duce OilLevel.......... 446 Inde
x47
1

N
Pe rm anen tly Ac tiveRi sk ofRo lling
Aw ay<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011> 416
Onl yShif tto 'P' when Vehicle isSta‐
tio nar y...................................................4 15
Place theKe yin theMar kedSpace
See Oper ator's Manual. .........................4 06
PRE-S AFEInoper ativeSee Oper a‐
to r's Manua l........ ...... ............................ 404
Ra dar SensorsDir tySee Oper ator's
Manual. .................................................4 37
Re versing NotPo ssible Service
Re quired ................................................ 417
Ru nFla tIndi catorInop erati ve............... 445
Ser vice Required Do NotShif tGear s
Vi sit Dealer.... ........................................4 16
St op Vehicle LeaveEngi neRunning
Wa itTrans miss ionCoolin g.. ...................4 17
Ti re Press. Monit orCur rently
Un available ............................................ 440
Ti re Press. Monit orInopera tive... ..........4 40 Ti
re Pressur eMonit orInopera tiveNo
Wheel Sensors.. .....................................4 41
Ti re sOv erheat ed................................... 443
To Dese lect Por N, Dep ress Brak e
and StartEn gin e.. .................................. 416
To switc hengine off,pr ess and hold
St art/ Stop butt onforat lea st3
secs. orpress 3times...... ......................4 13
Tr af fic Sign AssistCamer aVi ew
Re strict ed See Operator's Manua l......... 427
Tr af fic Sign AssistCur rently Unavail‐
able SeeOperat or'sMan ual.................. 427
Tr af fic Sign AssistInoper ative..... .......... 427
Tr ans miss ionMalfun ction Stop..... ......... 417
Disp layon thewindsh ield
see Head- upDis play
Dis tance control
see ActiveDis tance AssistDIS TRONI C
DI ST RO NIC
see ActiveDis tance AssistDIS TRONI C Do
or
Loc king (emerg ency key). ........................ 69
Ope ning (from inside ).............................. 67
Un loc kin g(emer gency key). .................... 69
Un loc kin g(fr om insid e)............................ 67
Door controlpan el....................................... 16
DO T,Tire Iden tificat ionNumbe r(TI N)..... 370
Dr aw bar
see Tow- bar system
Dr inking anddriving... ...............................1 33
Dr ive Awa yAssis t.... .................................. 202
Dr ive Awa yAssis t
see Protect ion agains tcollision
Dr ive position
Inser ting.. ..............................................1 42
Dr ive pr og ram dis pla y........... .................... 139
Dr ive pr og rams
se eDY NA MIC SELE CT
Dr iver's seat
see Seat
Dr iving safetysy stem
AB S(An ti-loc kBr akin gSy stem) .............1 56 47
4
Inde x

Fo
lding in/out.. .....................................1 20
Oper ating thememor yfunc tion.............. 99
Pa rking posit ion............................... ...... 122
Se tting <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011> 120 F
Fa tig ue detection
see ATTENTION ASSIST
Fa vo rite s
Ad ding. .... ........................................ ...... 230
Calling up.......................................... .... 230
Dele ting.... ........................................ .....2 30
Mo ving........... ................................... .... 230
Ov ervie w.... ....... ....... ............................ .229
Re nam ing<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011>230
Fi rs t-aid kit(sof tsi ded) <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011> ......336
Fl aco n
Inse rting/ remo ving .............................. .1 26
Flat tire
Cha nging awhe el....... ........................... 381
MOExt ended tires ....... ........................... 337
No tes... .................................................3 36
TIREFIT kit............. ................................ 338 Flat
towing
see Tow- bar system
Floor mats.................................................. 110
Fo ilco vering
Ra dar and ultrasonic sensors................ 155
Fr ag rance
see Perfume atomiz er
Fr ee sof tware.. ............................................ 34
Fr eq uencies
Tw o-w ayradio .................................. .....3 89
Fr ont airbag (driver ,fr ont passeng er).......4 2
Fr ont passeng erseat
see Seat
Fu el
Ad ditiv es.......................................... .....3 94
E1 0.<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011> 393
Fu elreser ve<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011001100110011> 394
Ga sol <004C005100480011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011> 393
Qua lity (gas oline ).<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011> 393
Re fuel ing.... ...........................................1 45
Sulfu rcont ent............ ........................... 393
Ta nk cont ent<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011> ...............394 Fu
nction seat
see Door controlpanel
Fu ses
Bef orere placing afuse .......................... 353
Dashboar dfuse box.............................. 355
Fu se assignment diagram..................... 353
Fu se boxin theengine compartmen t.... 354
Fu se boxin thefront -passen gerfo ot ‐
we ll....................................................... 355
Fu se boxin thetrunk... .........................3 56
No tes... .................................................3 53
Fu ses
see Fuses G
Gar agedoor opener
Clea ring thememor y.... .........................1 51
Opening orclosing thedoor.. ................. 151
Pr ogr amming buttons. ........................... 149
Re sol ving problems ...............................1 50
Sync hronizing thero lling code.. .............1 50
Gas station search
St artin gaut omat icsear ch<0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011> 251 Inde
x47
7

Sy
stem limit ations. ................................ 194
Pa rking assis tance systems
see ActivePa rking Assist
Pa rking brak e
see Elec tric par kingbr ak e
Pa rking foran extended period.. .............. 153
Pa rking light s.............................................1 12
Pa rking posit ion
Ex terior mir rors<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011> 122
St or ing theposition ofthefront -
passeng eroutside mirrorusi ng
re ve rsege ar...................................... .... 122
PA SSEN GERAIRBAGstatus displa y
see Automatic front pass engerfront
airb agshut off
Pa yload
Calculat ionexam ple.............................. 367
De term inin gth emaximum... ................. 366
Pe rfume
see Perfume atomiz er
Pe rfume atomizer
Inser ting/r emoving theflacon.. .............1 26
Se <00570057004C0051004A00110011001100110011001100110011001100110011
00110011> ......................................126 Pe
rfume vial
see Perfume atomiz er
Pe riod out ofuse
Ac tivati ng/d eactiv ating standb y
mode ................................................ .....1 54
St andb ymode function.. .................. .....1 54
Pe rm itted towing methods.. .................... 348
Pe rsonaliz ation
see User profile
Pe ts inthe vehicl e...... .................................62
Phone book
see Cont acts
Pic turefo rm ats
see Video mode
Pictur ese ttings
see Video mode
PIN protection
Ac tivati ng/d eactiv ating........... ..............241
Plas tictrim (Car e).... ................................. 333
Pla ybac kop tions
Selectin g.......................................... ..... 303 POI
Selectin g................................................ 251
POI symbols
Selectin g............................................... 268
Po we rsupp ly
Swi tching on(Start/S topbutt on).......... 128
Po we rwa sher (care)................................. 329
Po we rwi ndo ws
see Side windo ws
PRE-S AFE®
(anticipat oryoccupant
pr otection)
Fu nctio n.<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011> 49
PR E-S AFE ®
Sou <0051004700110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011> 49
Re versing measur es................................ 50
PRE- SAFE®
PL US (ant icipa tory occu‐
pa nt protection plus)
Fu nctio n.<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011> 50
Re versing measur es................................ 50
Pr ev entat ive occupa ntprotection sys‐
te m
see PRE-S AFE®
(anticipat oryoccu‐
pant protect ion) Inde
x485