2021 MERCEDES-BENZ C-CLASS COUPE hood open

If
th eindicat or/warning lampsintheins trument
clus terdo notlig ht up atlow temp eratur es,itis
ve ry likelyth at thedisc hargedbatt eryhas fro‐
zen .In this case youma yne ither jump-start the
ve hicle norcharge thebatt ery.
The service life of abatt eryth at has been
th awe dma ybe dramaticall yshor tened .The
st ar tin gch aract eristic sma ybe impair ed,espe ‐
ciall yat low temp eratur es.
It is recomme ndedthat youha ve ath aw ed bat‐
te ry checkedat aqu alif ied spec ialistwo rkshop.
All vehicl es
* NO
TEDama gecau sed bynum erou sor
ex tende datt em ptsto star tth eengine Nu
me rous orextende datt em ptsto star tth e
engine maydamag eth ecat alytic converter
due tonon-co mbusted fuel. #
Avoid numer ousand extende datt em pts
to star tth eengine. Obser
vethefo llo wing pointsdur ing star tin g
assis tance and when chargin gth ebatt ery:
R Onlyuse undamag edjum per cables/c harg‐
ing cables withasuf ficie ntcross -secti onand
insu late dte rm inal clam ps.
R Non-insulat edpar tsof thete rm inal clam ps
mus tno tcom eint ocon tactwi th other metal
par tswhile thejum per cable/c harging cable
is con nect edtothebatt ery/jum p-start con‐
nectio npoi nt.
R The jumper cable/c harging cable mustno t
com eint ocon tactwi th anypar tswhic hma y
mo vewhen theengine isrunning .
R Alw aysmak esur eth at nei ther youno rth e
batt eryis elect rostatic allych arge d.
R Keep away from fire and open flames .
R Donotlean overth ebatt ery.
Obser vetheadditional follo wing pointswhen
ch argin gth ebatt ery:
R Onlyuse batterych arge rs tested and
appr oved forMer cedes-Benz.
R Read thebatt erych arge r's oper ating instruc‐
tions beforech argin gth ebatt ery. Obser
vetheadditional follo wing pointsdur ing
st ar tin gassis tance:
R Startin gassis tance mayonly beprov ided
using vehicles, batteries orother jumpstar t
de vic es wit hano min alvoltag eof 12 V.
R The vehicles mustno tto uc h.
R Vehicl eswith aga soline engine: Jump
st ar tth eve hicle onlywhen theengine and
ex haus tsy stem arecold. St
arting assistance andchargin gth e12 V
batt ery Pr
epar ingstar ting assistance /char ging #
Secur eth eve hicle byappl ying theelectr ic
par king brak e. #
Automatic trans mis sion :Shi ftthetra ns‐
mission toposition 005D. #
Manu altransm ission: Shiftth etra nsmis‐
sion toneu tral . #
Swi tchof fth eignition andallelectr icalcon‐
sumer s. #
Open thehood. 34
6
Brea kdo wnassista nce

R
Allelectr icalconsu mersar esw itched off.
R The igniti onissw itched off.
The electr icalfu ses arelocat edinvarious fuse
bo xes:
R Fuse boxin theengine compartmen ton the
dr iver's side (/page35 4)
R Fuse boxon thedr iver's side ofthecoc kpit
(/ page355)
R Fuse boxin thefront passeng erfoot we ll
(/ page355)
R Fuse boxin thetrunk ontheright- hand side
of theve hicle, when viewe din thedir ect ion
of tra vel(/ page356 ) Opening
andclosing thefus ebo xin the
engine compartmen t Re
quirement s:
R Adr yclo thand asc rewdr iver areav ailable.
Obse rveth eno teson electr icalfuses
(/ page353). Opening &
WARNIN GRisk ofinju ryfrom using the
winds hieldwiper swhile theengine hood
is open
When theengine hoodisopen andthewind‐
shield wipersar ese tin mo tion ,yo ucan be
trapped bythewiper linkage. #
Alw aysswitc hof fth ewindshield wipers
and ignition beforeopening theengine
hood. #
Turn retai ning clip2 oncover1 aqu arter-
tur ncou nter-clo ckwise. #
Foldcover1 upinthedir ect ion ofthe
ar row . 35
4
Breakdo wnassis tance

#
Remo veanyex istin gmois turefrom thefuse
bo xusing adr yclo th. #
Loosen screws3 and remo vefuse boxlid
4 upw ards.
Clo sing #
Che ckwhe ther theseal isposition edcor‐
re ctly inlid 4. #
Inser tlid 4 intoth ebr ac ketat thebac kof
th efuse box. #
Folddo wn lid4 ofthefuse boxand tight en
scr ews3. #
Folddo wn cover1. #
Turn retai ning clip2 oncover1 aqu arter-
tur nclo ckwise. #
Close thehood. Opening
andclosing thefus ebo xin the
coc kpit Re
quirement s:
R Obser vetheno teson electr icalfuses
(/ page353).
The fuse boxis on thedr iver's side ontheside of
th ecoc kpit under aco ver. #
Con tact an author ized Mercedes-B enzCen‐
te rfo rfur ther information . Opening
andclosing thefus ebo xin thefront
pa sseng erfoot we ll Obser
vetheno teson electr icalfuses
(/ page353). #
Open cover1 inthedir ect ion ofthear row
and remo veit. Br
eakdo wnassis tance 35
5

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions
Ù St eering Malfunct ionStop
Immediately SeeOpera-
tor's Manual *T
hesteer ing ismalfunct ioning.Steer ing capability issignif icantlyim pair ed. &
WARNIN GRisk ofacci dent ifsteer ing capability isim pair ed
If th esteer ing does notfunc tion asintended, theve hicle's operating safetyis jeopar dized. #
Pull overand stop theve hicle safely assoon aspossible, paying attention toroad and traf fic condi tions.
Do notcontinu edr ivi ng und eranycir cums tances. #
Consu ltaqu alif ied spec ialistwo rkshop. 0051
*A
tle as tone door isop en. #
Close alldo ors.
0083 *T
hehood isopen. &
WARNIN GRisk ofacci dent dueto driving withth ehood unlocked
The hood mayopen andblockyo ur vie w. #
Neverre lease thehood when driving. #
Beforeev erytrip, ensur eth at thehood isloc ked. #
Stop theve hicle immediat ely,pa ying attention toroad and traf fic condi tions. #
Close thehood. Displa
ymessag esand warning/ indic ator lam ps 41
1

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions
ÿ Coolant TooHotStop Vehi-
cle Turn Engine Off *T
hecoolant istooho t. #
Stop theve hicle immediat elyinaccor dance withth etraf fic condi tions andswitchof fth eengine. &
WARNIN GRisk ofburnswhen opening thehood
If yo uopen thehood when theengine hasoverheat edorwhen ther eis afire intheengine compartmen t,th e
fo llo wing situat ionsmayocc ur:
R Youco uld come intoco ntact withho tga ses.
R Youco uld come intoco ntact withot her hot,escaping operating fluids. #
Beforeopen ingthehood, allowtheove rheat edengine tocool down. #
Intheeve ntofafire intheengine compartmen t,ke ep thehood closed andcallthefire ser vice. #
Waitunt ilth eengine hascooled down. #
Mak esur eth at theair supply tothera diat orisno tobs truct ed. #
Avoiding highloads ontheengine, drive to thenear estqu alif ied spec ialistwo rkshop. Indoing so,ensur eth at
th ecoolant temp eratur edispla yre mains belowthere dmar king.
ÿ *T
hefanmo toris faulty . #
Avoiding highloads ontheengine, drive to thenear estqu alif ied spec ialistwo rkshop. Indoing so,ensur eth at
th ecoolant temp eratur edispla yre mains belowthere dmar king. 41
4
Display messa gesand warning/ indic ator lam ps

Engine
Wa
rning/indicat orlam p
Possible causes/conseq uencesand0050 0050
Solutions
ÿ Coolant warning lam p *T
he redcoolant warning lam pis lit while theengine isrunning .
Po ssible causes:
R The temp eratur esensor ismalfunct ioning
R The coolant leve lis toolow
R The airsuppl yto thera diat orisobs truct ed
R The radiat orfanis faulty
R The coolan tpum pis faulty
If th er eis an additional warning tone, thecoolant temp eratur ehas exceeded themaximum permissible temp eratur e. &
WARNIN GRisk ofburnswhen opening thehood
If yo uopen thehood when theengine hasoverheat edorwhen ther eis afire intheengine compartmen t,th e
fo llo wing situat ionsmayocc ur:
R Youco uld come intoco ntact withho tga ses.
R Youco uld come intoco ntact withot her hot,escaping operating fluids. #
Beforeopen ingthehood, allowtheove rheat edengine tocool down. #
Intheeve ntofafire intheengine compartmen t,ke ep thehood closed andcallthefire ser vice. 452
Displa ymessag esand warning/ indic ator lam ps

Swi
tching theaut omatic searchon/
of f.......................................................... 257
Using automatic search<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> 257
Gaso line<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011> 393
Gea rshif tre comm endation......................1 43
Genui nepar ts....... ....................................... 21
Glide mode...... ........................................... 144 H
Handbr ake
see Electr icpar king brak e
Handlin gch aract eristics (unus ual)........ .357
HANDS -FREEACCESS .................................. 73
Hazar dwa rning light s...............................1 14
Hazar doussubstances
Inf ormation ............ .............................. .... 24
Head restra int
Fr ont (adjus tingmechanicall y)................ 90
Re ar (installin g/remo ving).......................9 1
Re ar passe nger com partment
(adj ustin g)...............................................9 1 Head-up
Display
Ad jus ting disp lay el eme nts(on-bo ard
com puter)....... ................................... ... 209
Ad jus ting thebr ightn ess(on-boar d
com puter).. ....................................... ....2 09
Fu nctio n...<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
001100110011>208
Menu (on-bo ardcom puter)....... .......... .. 209
Oper ating thememor yfunc tion.............. 99
Se tting theposition (on-boar dcom‐
put er)....................................................2 09
Switc hingon/of f.<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011> 210
Headlam ps
see Automatic driving lights
Headlin er(car e)..... ....................................3 33
Heatin g
see Clima tecontr ol
Hel pcal l
see Mercede s-Benz emergency callsy stem
High beam
Ac tivati ng/d eactiv ating........... ..............113
High-be amflasher .....................................113
High-be amheadlam ps
Ad aptiveHig hbeam Assis t............... ...... 115 Hill
star tassi st<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011> 160
HOLD functio n
Fu nctio n/no tes.<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011> 159
Swi tching on/of f.<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011> 159
Hood Opening/clo sing................................... 322
Ho tspo t
Se tting up(Wi-Fi)......... ..........................2 38 I
Iden tificati onplat e
Engine ...................................................390
Re frig er ant....... .....................................3 97
Ve hicle. .................................................3 90
Ign itio n
Switc hingon(Start/S topbutt on).......... 128
Ignit ionkey
see Smar tKey
Imm obiliz er..................................................8 3
Indi catorlam ps
see Warning/ indic ator lam ps
Individ ualdrive pr og ram
Con figur ing.. .......................................... 140 47
8
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