2021 MERCEDES-BENZ C CLASS engine

Wa
rning/indicat orlam p
Possible causes/conseq uencesand0050 0050
Solutions
00C6 Re cup erati ve Brak eSy stem
wa rning lam p(US Aonl y)
004D
Brak eswarning lam p(yel‐
lo w) (Canada only) *
The yello w00C6 warning lam p(US Aonl y)or theye llo w004D brak es warning lam p(Canada only)islit while the
engine isrunning . &
WARNIN GRisk ofan acci dent dueto abr ak esy stem malfunct ion
If th ebr ak esy stem ismalfunct ioning,braking charact eristic sma ybe impair ed. #
Drive on car efull y. #
Have thebr ak esy stem checkedimmediat elyat aqu alif ied spec ialistwo rkshop. #
Adjus tyo ur spee dand drive on car efull y,lea vingasuit able distance totheve hicle infront. #
Ifth emultifunc tiondispla ysho wsadispla ymes sage,obse rveit. #
Consult aqu alif ied spec ialistwo rkshop. Displa
ymessag esand warning/ indic ator lam ps 433

Wa
rning/indicat orlam p
Possible causes/conseq uencesand0050 0050
Solutions
0027 Br ak ewa rning lam p(US A
onl y)
004D Br ak esy stem warning lam p
(Canada only) *T
he redbr ak esy stem warning lam pis lit while theengine isrunning .
Po ssible causes:
R The brak efo rc eboos tingismalfunct ioningandthebr aking charact eristic sma ybe affect ed.
R The reisinsuf ficie ntbrak efluid inthebr ak efluid reser voir. #
Notethemessag eson themultifunc tiondispla y. &
WARNIN GRisk ofacci dent andinjuryifbr ak efo rc eboos tingismalfunct ioning
If br ak efo rc eboos tingismalfunct ioning,increased brak epedal forc ema ybe neces saryfo rbr aking. Thebraking
ch aract eristic sma ybe impair ed.The brakin gdis tance canincrease ineme rgency braki ng situa tions. #
Stop inasaf elocation immediat ely.Do notcont inue driving. #
Consult aqu alif ied spec ialistwo rkshop. &
WARNIN GRisk ofan acci dent dueto low brak efluid leve l
If th ebr ak efluid leve lis toolow, thebr aking effect and thebr aking charact eristic sma ybe impair ed. #
Pull overand stop theve hicle safely assoon aspossible, paying attention toroad and traf fic condi tions.Do
no tcontinu edr ivi ng und eranycir cums tances. #
Consu ltaqu alif ied spec ialistwo rkshop. #
Donotadd brak efluid. 43
4
Dis playmes sagesand warning/ indic ator lam ps

Dr
ivin gsaf etysy stems Wa
rning/indicat orlam p
Possible causes/conseq uencesand0050 0050
Solutions
0025 ABS warning lam p *T
he yello wAB Swa rning lam pis lit while theengine isrunning .
ABS isma lfunctio ning.
If th er eis an additional warning tone, EBD isma lfunctio ning.
Ot her drivi ng systems anddriving safetysy stems mayalso bemalfunct ioning. #
Notethemessag eson themultifunc tiondispla y. &
WARNIN GThe reisarisk ofskidding ifEBD orABS ismalfunctioning
The wheels mayloc kdur ing braking.
The steer ability andbraking charact eristic sar ehea vilyim pair edand thebr aking distan cema yincr ease. Inaddi‐
tion, other driving safetysy stems areswitc hedoff. #
Drive on car efull y. #
Have thebr ak esy stem checkedimmediat elyat aqu alif ied spec ialistwo rkshop. 00E5
ESP ®
wa rning lam p *
The yello wES P®
wa rning lam pflashes whiletheve hicle isin mo tion.
or
The yello wES P®
wa rning lam pis lit while theengine isrunning .
The yello wESP ®
wa rning lam pflashes whiletheve hicl eis in mo tion:
One ormor ewhee lshas reac hed itsgrip limit (/page16 0). 43
6
Dis play messa gesand warning/ indic ator lam ps

Wa
rning/indicat orlam p
Possible causes/conseq uencesand0050 0050
Solutions #
Adaptyo ur drivin gst yle to suit thero ad and weather condition s.
Th eye llo wESP warning lam p®
islit while theengine isrunning.
ES P®
is malfunct ioning.
Ot her driving systems anddriving safetysy stems (e.g. BAS)ma yal so be mal functi oning. #
Notethemessag eson themultifunc tiondispla y. &
WARNIN GRisk ofskid ding ifESP ®
is mal functi oning
If ESP ®
is mal functi oning,ESP ®
canno tcar ryout vehicle stabiliz ation.Inaddit ion,ot her driving safetysy stems
ar eswitc hedoff. #
Drive on car efull y. #
Have ESP ®
ch eckedat aqu alif ied spec ialistwo rkshop. 00BB
ESP ®
OFF warning lam p *
The yello wES P®
OFF warning lam pis lit while theengine isrunning .
ESP ®
is de acti vated.
Ot her driving systems anddriving safetysy stems mayalso beinoper ative. &
WARNIN GRisk ofskid ding whe ndr ivi ng with ESP ®
de acti vated
ESP ®
do es notact tostabiliz eth eve hicle. Theavailabilit yof fur ther driving safetysy stems isalso limited. #
Drive on car efull y. Dis
play messa gesand warning/ indic ator lam ps 43
7

Ac
tiv eSte ering Assis t
Ac tivati ng/d eactiv ating........... ..............175
Ac tiveEmerg encyStop Assis t................ 176
Ac tiveLa ne Chang eAssi st<0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011> 177
Fu nctio n...<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011>174
Sy stem limits. ........................................1 74
Ad aptiv ecr uise contr ol
see ActiveDis tance AssistDIS TRONI C
Ad aptiv eHighb eamAssist
Fu nctio n...<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011>117
Swi tching on/of f.<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011> 118
Ad diti ves
Engi neoil.... ............ ...............................372
Fu el....................................................... 372
Ad diti ves(engine oil)
see Additiv es
Ad diti ves(fuel)
see Fuel
Ad dres sbo ok
see Contacts
Ad jus tingthe balanc e/fader
Ad vanced soundsystem.. ......................2 99
Bur mes ter®
sur round soun dsy stem.. ...298 Ad
jus tingthe bass,mid- rang eand
tr eble
Bur mes ter®
sur round soun dsy stem ..... 298
Ad jus tingthe mid- rang e,treble and
bass
Burmes ter®
sur round soun dsy stem ..... 298
Ad jus tingthe sound focus
Bur mes ter®
sur round soun dsy stem ..... 298
Ad jus tingtreb le,mid- rang eand bass
se ttings
Ad vanced soundsystem.. ......................2 99
Bur mes ter®
sur round soun dsy stem ..... 298
ADS PLUS dam ping system
see AIRMA TIC
Ad vanced sound system
Ad jus ting thebalance/f ader............ ..... 299
Ad jus ting treb le,mid -rang eand bass
se tting s.<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011> 299
Ca lling upthesound menu.................... 299
Inf ormation.. .................................... ...... 298
Switc hingvolume adjustment on/ off... .2 99
Af ter-sales service center
see ASSYSTPL US Air
bag
Re duced protect ion.. ...............................4 4
Air distribut ion
Se tting. .................................................. 126
Air inle t
see Air-water duct
Air pressu re
see Tire pressur e
Air suspension
see AIRMA TIC
Air vents
Ad jus ting (front) ............ ........................ 129
Ad jus ting (rea r)............. .........................130
Air vents
see Airvents
Ai r-condi tioningsystem
see Climat econ trol
Air -recir cula tion mode..............................1 29
Air -water duct
Ke eping free... ....................................... 307
Airbag Activati on........... .....................................36
Fr ont airbag (driver ,fr ont passeng er)....... 41 Inde
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1

At
tention assistant
see ATTENTION ASSIST
Au dio 20
see Multimed iasystem
Au dio mode
Ac tivati ng med iamod e................ .......... 283
Co nnecti ngUSB devic es........... ............285
Cop yrights. ............................................283
Inf ormatio n............ ................................282
Inser ting/r emoving anSD card............. 283
Med iasea rch.. .................................. .....2 86
Ov ervie w.... ....... ....... ............................ .284
Pa use and playbac kfun ction .................2 85
Selecti ngatrac k............ .......................285
Selecti ngplayba ckoptions .................... 285
Tr ac klis t................................................ 285
Au thorized Mercedes- BenzCenter
see Qualif iedspec ialistwo rkshop
Au thorized workshop
see Qualif iedspecialis two rkshop
Au tomatic distanc eco ntr ol
se eAc tiveDis tance AssistDIS TRONI C
Au tomatic drivin glights ........... .................115 Au
tomatic engine star t(E CO star t/
sto pfunc tion)<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> ....139
Au tomatic engine sto p(E CO star t/
sto pfunc tion)<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011> .....139
Au tomatic fron tpass engerfr on tair‐
bag shutoff
Fu nctio nof theaut omatic front
passeng erfront airbag shutoff........... ..... 44
PA SSENGER AIRBAGind icat orlam p....... 46
Au tomatic fron tpass engerfr on tair‐
bag shutoff
see Automatic front pass engerfront
airb agshut off
Au tomatic mirrorfo lding function
Ac tivati ng/d eactiv ating........... ..............125
Au tomatic trans mis sion
DIR ECT SELEC Tleve r..... .................... .... 143
Dr ive pr ogr am disp la<005C001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> ....142
Dr ive pr ogr am<0056001100110011001100110011001100110011001100110011001100110011
001100110011> ....................141
DY NA MIC SELE CTswitc h....................... 141
Eng aging drive po sitio n............ ............. 145
Eng aging neu tral ............. .......................144
Eng aging park position .................... ...... 145
Eng aging reve rsege ar. ...................... .... 144 Kic
kdo wn..... ..........................................147
Manual gearshif ting... ............................1 46
St eer ing wheel paddle shifters.............. 146
Tr ans miss ionposit iondispla y................ 143
Tr ans miss ionposit ions.......................... 143
Au tomatic trans mis sion (problem)
se eTr ans miss ion(problem ) B
Ba ghook .................................................... 108
BA S(Br akeAssis tSy stem). ...................... 160
Batt ery
Smar tKey <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011> 66
Batt ery
see Battery(v ehi cle)
Batt ery(v ehi cle)
Ch <00440055004A004C0051004A0011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011> 325
Ch arging (Remo teOnline). ..................... 134
No tes... .................................................. 321
No tes(s ta rting assis tance and
ch argin g)............................................... 323
Re placing .............................................. 327
St artin gassis tance <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> ........325 Inde
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3

Do
wnl oading (from mob ile ph one )........ 263
Im por <0057004C0051004A001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011> 264
Im por ting (ove rview). ........................ .... 264
Inf ormatio n....................................... .....2 63
Maki ngacall.......... ...............................265
Na me form at......................................... 264
Op tions.................................................2 65
St or ing.... ..............................................2 65
Co ntr oller
Oper <00440057004C0051004A00110011001100110011001100110011001100110011
00110011> .................................. 214
Con venience closing featur e....... ...............79
Con venience opening ..................................7 8
Coolant (engine)
Capacit y.<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011001100110011001100110011> 374
Chec kleve l............................................ 306
No tes... ............................................. ..... 374
Cooling see Climat econ trol
Cop yright s
Lic ens e............................................ ........ 34
Tr ademar ks<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011> 34
Co rnering light ...........................................1 17
Cr oss Traf fic Aler t..................................... 204 Cr
osswind Assist
Fu nctio n/no tes.<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011> 161
Cr uise contr ol
Ac tivati ng........... ................................. ..166
Butt ons<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011>..........166
Callin gup aspee d.<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011> 166
Dea ctivating............. .............................166
Fu nctio n...<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
001100110011>165
Re quiremen ts:.......................................1 66
Selecti ng........ ................................... .... 166
Se tting aspe <0048004700110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011> 166
St or ing aspeed... .............................. ....1 66
Sy stem limit ations. ........................... ..... 165
Cus tomer Assist ance Center (CAC )........... 28
Cus tomer Relat ions Depar tment. .............. 28 D
Dashboa rd
see Cockpit
Data acquisition
Ve hicle. ............................................. ...... 29
Data impor t/expor t
Fu nctio n/no tes.<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011> 226
Im por ting/e xporting<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011> 226Dat
apr otection rights
Dat ast or ag e... ......................................... 32
Data storage
Dat apr otect ion rights ............................. 32
Elect ronic contr oluni ts<0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> ...29
Onl ine service s.<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011> 32
Ve hicle. ................................................... 29
Dat e
Se ttin gth etime anddateaut omati‐
call y.... ................................................... 222
Da ytim eru nning lampmode
see Daytime running lights
Da ytime running lights
Switc hingon/o ff<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011> 118
Deact ivat ing theala rm (ATA )<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011> 86
De ale rship
see Qualified speci alist wo rkshop
Dec laration ofconf ormity
Wi reless vehicle component s.................. 25
Dec orativ efo il(cleaning instructions) .... 310
Def initions (tiresand loading) ................. 352
Des tinat ion
Editin gint ermediat edes tinat ions.... ...... 237 Inde
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7

00E5
Currentl yUna vailable See
Opera tor's Manua l........ ...... ...................412
Á Don't Forget Your Key<0011001100110011001100110011001100110011001100110011001100110011
00110011> 384
00CC Drive More Slowly<0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> 409
00B3 Engine OilLevelCann otBe
Mea sured<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011>......425
00B3 Engine OilLevelLo wStop Vehi‐
cle Turn Engi neOff............ ....................423
00B3 EngineOilPr ess ureSt op
Switc hOf fEngin e... ...............................4 24
00B3 EngineOilRe duce OilLevel.......... 423
0075 Front LeftMalfunction Service
Re quired (exa mp le)...............................3 80
00B6 FuelLevelLo w............................. 393
00B6 GasCap Loose .............................3 93
0025 Inoper ativeSee Oper ator's
Manu al........ ...........................................411
00E5 Inoper ativeSee Oper ator's
Manua l....... ..... ....................................... 412 007A
Inoper ativeSee Oper ator's
Manua l....... ............................................ 413
0053 Inoper ative..... ...............................4 15
: Intell. Light System Inoperativ e....386
Á KeyNo tDe tected (red displ ay
messa ge)<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011001100110011001100110011> 384
Á KeyNo tDe tected (whit edis‐
pl ay messa ge)<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011> 383
0075 LeftSid eCu rtain Airbag Mal‐
fun ction ServiceRe quired (Exam ple) .....3 80
¢ Lowe ring............. <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> 409
ä Malfunctio nDr ive at Ma x.50
mp h<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011> 407
: Malfunction SeeOperato r’s
Manual... ............................................... 385
Á ObtainaNe wKe y<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> 383
ç Off<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011> 403
00D9 Off<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011> 401
0049 Parking Brak eSee Opera tor's
Manua l......... ......................................... 396 0077
PleaseCor rect Tire Pressur e... ..... 419
0049 Please Release Parking Brak e.. .... 399
006F Rear Lef tBac kres tNo t
La tched (exa mp le).................................3 90
Á Replace KeyBat tery <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011> 383
003D SeeOperator's Manua l........ ......... 416
0075 SRSMalfunction Service
Re quired ................................................ 380
Ù Steer ing Malfunct ionIncreased
Ph ysical Effort See Operator's Manua l.. 388
Ù Steer ing Malfunct ionStop
Immediat elySee Oper ator's Manual ..... 389
003D Stop Vehicle LeaveEngi neRun‐
ning <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011>........417
003D Stop Vehicle SeeOper ator's
Manual... ................................................ 416
00CC Stop Vehicle Vehicle TooLo w....... 408
ç Suspended ................................... 403
: SwitchOf fLights.... ......................3 86
: SwitchOn Head lamp s<0011001100110011001100110011001100110011001100110011001100110011
00110011> 386 Inde
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