2021 MERCEDES-BENZ C CLASS warning light

lane,
espec iallyif Ac tiveLa ne Keeping
Assis taler tsyou. Be
sureto obser vethesy stem limit ations of
Ac tiveLa ne Keeping Assist. #
Press butt on2.
If indicat orlam p1 lights up,ActiveLa ne
Ke eping Assistis activ ated, thelane mark‐
ings aresho wnaslight intheassis tance gr
ap hic. Whe nAc tiveLa ne Keeping Assistis
activ e,thelane marking sar esho wningreen
in theassis tance grap hic.
Se ttin gAc tiv eLan eKe eping Assist
Multi media system:
4 Vehicle 5
k Assist ance
5 Act .Lane Keep. Assist
Ac tiv atin g/deac tivatin gthe warning #
Activate0073 ordeacti vate 0053 Lane Depart.
Warning.
Yo udo notre cei veanywa rning when leaving
a lane ifth elane keeping warning system is
deactiv ated. DY
NA MIC BODY CONT ROLfun ction DY
NA MIC BODY CONTR OLcontinuously adjusts
th ech aract eristic sof thesuspension dampersto
th ecur rent operati ng and drivi ng cond itions.
The damp ing istun edindiv iduall yfo reac hwhee l
and isaffect ed bythefo llo wing fact or s:
R The road sur face condi tions
R Vehicle load R
The drive pr ogr am select ed
R The driving style
The drive pr ogr am can beadjus tedusing the
DY NA MIC SELE CTswitc h. AIRMA
TIC Fu
nction ofAIRMA TIC
AIRMA TICisan air suspension system withva ria‐
ble dam pingfo rim prove ddr iving comfort.The
all-r ound leve lcon trol system ensur esthebes t
possible suspension andconstant grou nd clea r‐
anc e,even withaladen vehicle. When driving at
speed, theve hicle islowe redaut omatic allyto
im prove driving safetyand toreduce fuelcon‐
sum ption. Youalso have theop tion ofmanually
adjus tingtheve hicle leve l.
AI RMA TICincludes thefo llo wing compone nts
and func tions:
R Airsuspen sionwithaut omat icleve lcon trol
R Speed -dependentlo we ring toreduce fuel
con sum ption
R Manuall yselec table high leve lse tting for
gr ea tergr ound clearance 18
8
Driving and parking

&
WARNIN GRisk ofexplosion from hydro‐
ge nga signiting
Ther eis adang erofhydrog en gasigniting
when chargin gth ebatt eryif th er eis ashor t
cir cuit orspar ksstar tto form . #
Mak esur eth at thepositiv ete rm inal of
th econ nect edbatt erydoes notcome
int ocon tact with vehicle parts. #
Neverpla ceme talobje ctsor tools ona
batt ery. #
The descr ibedorder ofthebatt ery
clam psmus tbe obser vedwhen con‐
nec tingand discon nectingth ebatt ery. #
When giving star tin gassis tance, alwa ys
mak esur eth at youon lyconnect bat‐
te ry term inals withident icalpolar ity. #
Dur ing star tin gassis tance, youmus t
obse rveth edescr ibedorder forcon‐
necting anddisconnecting thejum per
cable. #
Donotcon nect ordiscon nectthebat‐
te ry cla mp swhile theengine isrunning . &
WARNIN GRisk ofexplosion during
ch argin gpr oce ssand star tin gassis tance
Dur ing thech argin gpr oce ssand star tin g
assis tance, thebatt eryma yre lease anexplo‐
siv ega smixtur e. #
Avoid fire ,open flames ,cr eat ing spar ks
and smoking. #
Mak esur eth er eis suf ficie ntventil a‐
tio n. #
Donotle an ove ra batt ery. &
WARNIN GRisk ofexplosion from afro‐
zen battery
A disc hargedbatt eryma yfreeze attemp era‐
tur es slightl yabo veorbelo wfreezing point.
Dur ing star tin gassis tance orbatter ych arg‐
ing ,bat tery gascan bereleased. #
Alw aysallo wabatt eryto thaw before
ch argin git or per form ing star tin gassis ‐
ta nce. 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. 32
4
Breakdo wnassis tance

Light
s Displa
ymess ages
Possible causes/conseq uencesand0050 0050
Solutions
: Check LeftLow
Beam (exa mp le) *T
hecor responding lightsourceisdef ectiv e. #
Drive on car efully . #
Visit aqu alif ied spec ialistwo rkshop immediat ely.
% LED lightsour ces: thedispla ymessag efo rth ecor responding lightappea rsonl ywhen allthelight- emitt ing
diodes inthelight arefa ulty .
: Malf unctionSee Oper a-
to r’s Man ual *T
heexterior lighting ismalfunct ioning. #
Consult aqu alif ied spec ialistwo rkshop.
: Automatic HeadlampMode
Inoperative *T
helight sensor ismalfunctionin g. #
Consult aqu alif ied spec ialistwo rkshop. Displa
ymessag esand warning/ indic ator lam ps 385

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions
: Act ive Headlamps Inopera-
tive *T
heactiv eheadla mpsar emalfunctioning. #
Consult aqu alif ied spec ialistwo rkshop.
: Switch OnHeadla mps *Y
ouaredr iving without low- beam headlam ps. #
Turn thelight switc hto the0058 or0058 position .
:
Switc hOff Lights *Y
ouarelea ving theve hicle andthelights arest ill switc hedon. #
Turn thelight switc hto the0058 position .
: Int ell. Light System Inoper-
ative *T
heIntellig entLight System ismalfunct ioning.Thelighting system continues tofunction proper lywit hout thefunc ‐
tion sof theInt ellig entLight System. #
Consult aqu alif ied spec ialistwo rkshop. 386
Displa ymessag esand warning/ indic ator lam ps

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions
00B3 En gine OilLevel Cannot Be
Measured *T
heelectr icalconn ection totheoil leve lsen sor has been interru pte dor theoil leve lsen sor isfaulty . #
Con sult aqu alif ied spec ialistwo rkshop. Wa
rning and indicat orlam ps Ov
ervie wof indicat orand warning lam ps Som
esy stems willperform aself -tes twhen the
ignit ionisswitc hedon.Som eindic ator and
wa rning lam psma ybr ief lylight uporflash. This
beha viorisno n-cr itical. Thes eind icat orand
wa rning lam psindic ateamalfun ction onlyif th ey
light uporflash afte rth eengine hasbeen star‐
te dor dur ing ajour ney. Ins
trum ent displa y(s tand ard) Wi
des cree nco ckpit instrumen tdispl ay Dep
endingonthedispla yse tting, theposition s
of theindicat orlam pson theins trument display
ma ydif ferfr om theex am ple shown. Dis
playmes sagesand warning/ indic ator lam ps 425

Indi
catorand warning lam ps:
0075 Re
stra int system (/ page42 7)
00E9 Seat
belt(/page42 7)
Ù Powe rst eer ing (/ page428)
ÿ Coolanttemp eratur e(/ page429)
00B9 Chec
kEn gine (/page429)
003D Elect
rical mal functi on(/ page 429)
00B6 Re
ser vefuel withfuel filler flap loca‐
tio nind icat or(/ page42 9)
0049 US
A:elec tric par kingbr ak e(red)
(/ page43 2)
0024 Canada:
electric par kingbr ak e(red)
(/ page43 2)
0024 Ele
ctric pa rking brak e(yello w)
(/ page432)
00C6 US
A:Recup erati ve Brak eSy stem
(/ page432)
004D Canada:
brak es (yello w)
(/ page432)
0027 US
A:brak es (red) (/ page432)
004D Canada:
brak es (red) (/ page432) L
Distance warning (/ page435)
ä AIRMA TIC(/ page435)
ä DYNA MIC BODY CONTR OL
(/ page435)
0025 ABS
(/page436)
00E5 ESP®
(/ page436)
00BB ESP®
OFF (/page436)
0077 Ti
re pressur emonit oring system
(/ page438)
0060 Pa
rking lam ps(/ page11 4)
0058 Lo
wbe am (/ page11 4)
0057 Hi
gh beam (/ pag e11 5)
003E003D Tu
rn signal lights(/page11 5)
005E Re
ar foglam p(/ page11 4) 426
Displaymessa gesand warning/ indic ator lam ps

Occupant
safety Wa
rning/indicat orlam p
Possible causes/conseq uencesand0050 0050
Solutions
0075 Re stra int system warning
lam p *T
he redre stra int system warning lam pis lit while theengine isrunning .
The restra int system ismalfunct ioning(/page36). &
WARNIN GRisk ofinju rydue tomalfu nctions inthere stra int system
Com ponen tsinthere stra int system maybe activ ated unint entionally ornotdeplo yas planned inan acciden t. #
Have there stra int system checkedand repair edimmediat elyataqu alif ied spec ialistwo rkshop. #
Drive on car efully . #
Notethemessag eson themultifunc tiondispla y. #
Con sult aqu alif ied spec ialistwo rkshop immediat ely.
00E9
Sea tbel twa rning lam p *T
he redseat beltwarning lam pflashes andanintermit tent wa rning tone sou nds.
or
The redseat beltwarning lam plight sup forsix seconds oncetheengine hasstar ted.
In addition, anintermitt entwarning tone maysou nd.
The redse at beltwa rning lam pflashes andanintermit tent wa rning tone sounds:
The driver or front passeng erhas notfa stened hisorher seat beltwhile theve hicle isin mo tion. #
Fasten your seat belt(/page40 ).
Ther ear eobj ect son thefront passeng erseat. Displa
ymessag esand warning/ indic ator lam ps 42
7

Wa
rning/indicat orlam p
Possible causes/conseq uencesand0050 0050
Solutions #
Remo vetheobjec tsfrom thefront passeng erseat.
The redse at beltwa rning lam plight sup once theengine hasstar ted:
In addition, anintermitt entwarning tone maysou nd.
The redseat beltwarning lam pre minds thedr iver and front passeng ertofasten their seat belts. #
Fasten your seat belt(/page40 ).
If yo uha ve placed objectson thefront passeng erseat, there dseat beltwarning lam pma yre main lit. Ve
hicl e Wa
rning/indicat orlam p
Possible causes/conseq uencesand0050 0050
Solutions
Ù Po we rst eer ing warning
lam p(red) *T
he redpo we rst eer ing system warning lam pis lit while theengine isrunning .
The powe rassi stanc eor thesteer ing itself ismalfunct ioning. &
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
no tcontinu edr ivi ng und eranycir cums tances. #
Consu ltaqu alif ied spec ialistwo rkshop. #
Notethemessag eson themultifunc tiondispla y. 428
Displa ymessag esand warning/ indic ator lam ps