2021 MERCEDES-BENZ C CLASS fuel

Wa
rning/indicat orlam p
Possible causes/conseq uencesand0050 0050
Solutions #
Stop theve hicle immediat elyinaccor dance withth etraf fic condi tions andswitchof fth eengine. Donotcon tinue
dr iving under anycir cums tances. #
Notethemessag eson themultifunc tiondispla y.
If th ecoolant temp eratur edispla yis at thelowe rend ofthete mp eratur escale: #
Consult aqu alif ied spec ialistwo rkshop.
If th ecoolant temp eratur edispla yis at theupper endofthete mp eratur escale: #
Exitth eve hicle andkeep asaf edis tance from itunti lth eengine hascooled down. #
Chec kth ecoolant leve l(/ page306) . #
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 the
cool anttemp eratur edispla yre mains belowthere dar ea.
00B9 En gine diagnosis warning
lam p *T
he yello wChec kEn gine warning lam pis lit while theengine isrunning .
A ma lfunctio nha soccu rred intheengine, theex haus tsy stem orthefuel system.
The emission limitvalues maybe exc eeded andtheengine maybe inemer gency mod e.
In som est at es, legalrequ iremen tsstipulat eth at youmus timm ediat elyco nsult aqu alif ied spec ialistwo rkshop as
soon astheye llo wChec kEn gine warning lam plight sup. #
Have theve hicle checkedas soon aspossible ataqu alif ied spec ialistwo rkshop. 430
Displa ymessag esand warning/ indic ator lam ps

Wa
rning/indicat orlam p
Possible causes/conseq uencesand0050 0050
Solutions
003D Elect rical mal functi onwarn‐
ing lam p *T
heredelect rical fault warning lam pis lit.
Ther eis afa ult intheelectr ics. #
Notethemessag eson themultifunc tiondispla y.
00B6
Fu elreser vewarning lam p *T
he yello wfuel reser vewarning lam plight sup while youar edr ivin g.
or
The yello wfuel reser vewarning lam plight sup while theengine isrunning .
The yello wfuel reser vewarning lam plight sup while youar edr ivin g:
Ther ehas been pressu reloss inthefuel system. Thefuel filler cap isno tclos edcor rectl yor thefuel system isleak‐
ing. #
Close thefuel filler cap.
If th efuel filler cap hasalready been closedcor rectl y: #
Consul ta qu alif ied spec ialistwo rkshop.
The yello wfuel reser vewarning lam plight sup while theengine isrunning:
The fuel suppl yhas dropped intoth ere ser verang e. #
Refuel . Displ
aymessa gesand warning/ indic ator lam ps 43
1

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

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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9

Ext
erior mir rors
Anti-g lare mode (automatic).... .......... .... 123
Au tomatic mirrorfo lding function. .........1 25
Fo lding in/out.. .....................................1 22
Oper ating thememor yfunc tion.............1 01
Pa rking posit ion..................................... 124
Se tting <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011> 122 F
Fa tig ue detection
see ATTENTION ASSIST
Fa vo rite s
Ad ding. .... ........................................ ...... 217
Callin gup ...............................................2 17
Del eting.. ...............................................2 17
Mo ving.. ............................................. ....2 17
Ov ervie w.. ..............................................2 16
Re nam ing<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011>217
Fi rs t-aid kit(sof tsi ded) <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011> .......315
Flat tire
Chan gingawheel .................................. 359
MOE xtend edtires.. ................................ 316
No tes... ............................................. ..... 315
TIREFIT kit..............................................3 17 Flat
towing
see Tow- bar system
Floor mats.................................................. 113
Fo ilco vering
Ra dar and ultrasonic sensors................ 158
Fr ee sof tware.. ............................................ 34
Fr eq uencies
Tw o-w ayradio .................................. ...... 367
Fr ont airbag (driver ,fr ont passeng er).......4 1
Fr ont passeng erseat
see Seat
Fu el
Ad ditiv es.......................................... ...... 372
E1 0.<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011> 371
Fu elreser ve<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011001100110011> 372
Gasolin e............................................. ....3 71
Qua lity(gaso line ).<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011> 371
Re fuel ing.... ...........................................1 48
Sulfu rcont ent............ ............................ 371
Ta nk cont ent<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011> ................372
Fu nction seat
see Door controlpanel Fu
ses
Bef orere placing afuse .......................... 331
Dashboar dfuse box.............................. 333
Fu se assignment diagram...................... 331
Fu se boxin theengine compartmen t.... 332
Fu se boxin thefront -passen gerfo ot ‐
we ll....................................................... 334
Fu se boxin thetrunk... .........................3 34
No tes... .................................................. 331
Fu ses
see Fuses G
Gar agedoor opener
Clea ring thememor y.... .........................1 54
Opening orclosing thedoor.. ................1 54
Pr ogr amming buttons. ........................... 152
Re sol ving problems ...............................1 54
Sync hronizi ngthero lling code.. .............1 53
Gas station search
St artin gaut omat icsear ch<0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011> 236
Swi tching theaut omatic searchon/
of f.......................................................... 242
Gasoli ne...................................................... 371 45
4
Inde x

Oper
ating fluids
Ad ditiv es(fuel) .................................. .....3 72
Br ak efluid ........................................ .....3 73
Coolan t(en gine).................................... 374
Engi neoil.... ............ ...............................372
Fu el(gasoline) ....................................... 371
No tes... .................................................3 69
Re frig er ant (airconditio ningsystem) ..... 375
Wi ndsh ield wa sher fluid .................... .....3 75
Oper ating safety
Decl arati on ofconf ormity (wirel ess
ve hicle component s)... ............................2 5
Inf ormation .......................................... .... 24
Oper ating system
see On-bo ardcom puter
Oper ator' sMan ual
Ve hicle equipment ................................... 22
Oper ator's Manual (digital)........................ 20
Op timized acceleratio n
Ac tivati ng........... ................................. ..135
Ov erhead controlpanel
Ov ervie w................................................. 14 P
Pa int code.. ................................................ 368
Pa intw ork(cleaning instructions) ...........3 09
Pa nic alar m
Ac tivati ng/d eactiv ating........... ................65
Pa nor ama roof wit hpo we rtil t/s lidin g
pane l
see Sliding sunroo f
Pa rk pos ition
Inser ting<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011> ..............145
Sel ecting automatical ly<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> 145
Pa rked Vehicl eLoc ator
Switc hingtransmis sionon/of f.............. 223
Pa rking
see Elec tric par kingbr ak e
Pa rking aid
see Parking AssistPA RK TRONI C
Pa rking Assis tPA RK TRONI C
Ac tivati ng........... ................................. ..199
Ad jus ting warning tones <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> 199
Fu nctio n...<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
001100110011>196
Sid eim pa ct protect ion.... .................. ....1 97
Swi tching off.<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> 199 Sy
stem limit ations. ................................ 196
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.. .............. 157
Pa rking light s.............................................1 14
Pa rking posit ion
Ex terior mir rors<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011> 124
St or ing theposition ofthefront -
passeng eroutside mirrorusi ng
re ve rsege ar.......................................... 125
PA SSEN GERAIRBAGstatus displa y
see Automatic front pass engerfront
airb agshut off
Pa yload
Calculat ionexam ple.............................. 345
De term inin gth emaximum... ................. 344
Pe riod out ofuse
Ac tivati ng/d eactiv ating standb y
mode .....................................................1 57
St andb ymode function.. ........................ 157
Pe rm itted towing methods.. .....................3 27 Inde
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1

Ra
in-closing featur e
Slid ingsunr oof........... .............................82
Re ading lamp
see Interior lighting
Re alwo od (Car e)........................................ 312
Re ar climat eco ntr ol
Se <00570057004C0051004A00110011001100110011001100110011001100110011
001100110011> .....................................128
Re ar door s(c hild safetyloc k).... .................6 1
Re ar foglam p
Switc hingon/off.<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011> 115
Re ar seat
see Seat
Re ar vie wcamer a
Ca re<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011> 311
Fu nctio n...<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011>190
Opening thecamer aco ver(360°
Ca mer a)..... ........... .................................195
Se tting favo rite s(360° Camer a)... ......... 195
Re ar windo w
Ro ller sunblin d.<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011> 85
Re ar windo wheat er......... ......................... 126
Re fle ctive sa fety vest<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011> 314 Re
frig er ant (air conditioni ngsystem)
No tes... ............................................. ..... 375
Re fueli ng
Re fuel ingtheve hicle. ........................ ....1 48
Re mo teOnline
Char ging thest ar terbatt ery........ .......... 134
Coolin gor heat ingtheve hicle interior... 133
St artin gth eve hicle ........................... ....1 34
Re por ting safetydef ects..... ....................... 28
Re scue card................................................. 29
Re ser ve
Fu el....................................................... 372
Re setfunction (multimedia system). ...... 230
Re sidual heat............................................. 129
Re stor ing (fact oryse ttings)
see Resetfunction (multimedia system)
Re stra int system
Basic instruct ions forch ildr en.................5 0
Fu nctio nin an acci dent.... <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011> 36
Fu nctio nality<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
00110011>35
Ma lfunctio <0051001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011001100110011> <0011001100110011001100110011001100110011001100110011001100110011
001100110011>36
Pr otect ion.......................................... ...... 35
Re duced protect ion.. ...............................3 5 Sel
f-tes <0057001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011> 35
Wa rning lam p..........................................3 5
Re versege ar
Inser ting....... ......................................... 144
Rims (car e)<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011> ............311
Ro adside Assistan ce(breakdo wn)..... .......23
Ro llaw ay protection
see HOL Dfun ction
Ro ller sunblind
Pa nor amaro of wit hpo we rtilt/sli d‐
ing panel....... .......................................... 80
Re ar wind ow<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011001100110011> 85
Sid ewi ndo ws<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011> 84
Ro ofload .................................................... 377
Ro oflugg agera ck
Loadi ng..... ............................................ 109
Secu ring.............. <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> ..........109
Ro ute
Ca lcul ating ............................................239
Displ aying destination informatio n......... 241
Planning. ............................................... 236
Select ingatype... ..................................2 40
Selecti nganalte rn ativ ero ute.. .............. 242 Inde
x463

Se
tting thetime anddateaut omati‐
call y.... ................................................... 222
Se tting thetime zone.<0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011001100110011> 222
Se tting thetime/ datefo rm at... .............2 23
Switc hingtransmi ssionof theve hicle
position on/off...................................... 223
Sy stem settings
see Blue tooth®
see Dataim por t/expor t
see Languag e
see Wi-Fi T
Ta ilpip es(car e)........................................... 311
Ta nk cont ent
Fu el............................ ........................... 372
Re ser ve(fuel) ........................................ 372
Te ch nical data
Inf ormation.. .................................... ...... 366
Ra dio oper ating permits .................. ...... 367
Ve hicle identif ication plate.... ................3 68
Te lephone
Ac tivati ng functio nsduring acal l......... .262
Ca lland ringt one volume .................. .....2 62 Ca
lls wit hse veralpar ticipant s............... 262
Co nnecting amob ile pho ne(Ne ar
Fie ldCo mmu nication (NFC <000C000C00110011001100110011001100110011001100110011001100110011
0011001100110011> 261
Co nnecting amob ile pho ne(Pas skey )... 258
Con necting amob ilephon e(Se cure
Sim plePairing) ...................................... 258
De- author izin gamobile phone.............. 260
Di sc on necti ng amobi lephon e.............. 260
Im por tingcon tacts <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011001100110011> ....264
Im por ting cont acts (ove rview).... ...... .....2 64
Incoming callduring anexistin gcall ...... 263
Inf ormatio n....................................... .....2 58
Int erch ang ingmobi lephon es................2 59
Mobi lephone voice recogni tion............ 262
No tes... ............................................. ....2 56
Oper ating mode s........ ..................... ...... 258
Re cep tion andtransm ission volume ...... 261
Swit ching mobile phones(Near Field
Commun ication (NFC)) .......................... 261
Te lephon emen uov ervie w.<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011> 257
Te lephon eopera tion.............................. 262
Usin gNear FieldCommun ication
(NFC) .....................................................2 61
Wi reless chargin g(mob ilephon e).......... 112 Te
lephon yoper ating mod es
Blue tooth®
Te lephon y............................2 58
Te lephon yoper ating mod es
see Second telephon e
Te mp eratur e
Se tting theve hicle interior temp era‐
tur e... ..................................................... 126
Te mp eratur egr ade ....... .............................347
Te xt messag es
Call ingamessag esender ......................2 66
Conf iguring thedispla yedte xt mes ‐
sa ge s... .................................................. 266
Dele ting..... ............................................ 266
No tes... .................................................2 66
Op tions.......... ....................................... 266
Re ad-al oudfunction .............................. 266
Re adin g.................................................2 66
Thr ough-l oadingfe atur e
see Seat
Ti me
Manual timesettin g.............................. 223
Se ttin gsummer time............................. 222
Se ttin gth etime anddateaut omati‐
call y.... ................................................... 222 468
Index