2021 MERCEDES-BENZ C-CLASS SEDAN airbag disable

#
When theco- driver seat isoccupied,
mak esur eth at no obj ect sar etrapped
unde rth eco- driver seat. When
installing ach ild restra int system onthe
fr ont passeng ersea t,alw aysmak esur eof the
fo llo wing:
R Ensur eth at thech ild restra int system isposi‐
tion edcor rectl y(/ page 50).
R Alw ayscom plywithth ech ild restra int sys‐
te m manuf acturer'sinstallation instruct ions .
R Neverpla ceobjects (e.g.cushi ons)under or
behi ndthech ild restra int system.
R Fully re tract theseat cushion lengthadjus t‐
ment .
R The entire base ofthech ild restra int system
mus talw aysre st on thesitt ing surface ofthe
fr ont passeng ersea t.
R The backres tof thefo rw ard-f acin gch ild
re stra int system mus t,as faras possi ble,be
re sting ontheseat backres tof thefront
passeng erseat. R
The child restra int system mus tno tto uc hth e
ro of or be put under stra in by thehead
re stra int s.Ad jus tth eseat backres tinclin a‐
tion andthehead restra int setting accord‐
ing ly. &
WARNIN GRisk ofinju ryor deat hdue to
object sbe tween theseat surface and
th ech ild restra int system
Objec tsbetween thesitt ing surface and the
ch ild restra int system could affect thefunc ‐
tion oftheaut omatic co-driver airbag shut‐
of f. #
Donotplace anyobjec tsbetween the
sitting surface and thech ild restra int
sy stem. #
The entire base ofthech ild restra int
sy stem mus talw aysre st on thesitt ing
sur face oftheco- driver seat. #
The backres tof thefo rw ard-f acin gch ild
re stra int system mus t,as faras possi ‐
ble, beresting ontheseat backres tof
th eco- driver seat. #
Alw ayscom plywit hth ech ild restra int
sy stem manuf acturer'sinstallation
ins truct ions . A
per son onthefront passeng erseat must
obser vethefo llo wing informatio n:
R Fasten seat belts correctl y(/ page 37).
R Sitinan almos tupr ight seat positio nwit h
th eir bac kag ains tth eseat backres t.
R Sitwithth eir feet resting onthefloor ,if pos‐
sible.
The front passeng erairbag mayot her wise be
disable dby mis take ,fo rex am ple, inthefo llo w‐
ing situat ions:
R The front passen gertr ansf ersth eir weight by
suppor tingthemselv eson ave hicle armr est.
R The front passeng ersits insuc hawa yth at
th eir weight israised from thesitt ing sur‐
fa ce. Occu
pant saf ety 45

&
WARNIN GRisk ofinju ryor deat hdue to
a disable dfron tpasse nger airbag
The fron tpasse nger airbag isdisable dwhen
th ePA SSENGER AIRBAGOF Find icat orlam p
is lit.
A per son inthefront passeng erseat could
th en, forex am ple, com eint ocon tact with
th eve hicle interior ,especially ifth eper son is
sitt ing tooclose tothecoc kpit.
If th efront passeng erseat isoccupied,
alw aysensur eth at:
R The classificat ion oftheper son inthe
fr ont passeng ersea tis cor rect and the
fr ont passeng erairb agisenabl edordisa ‐
ble din accor dance withth eper son inthe
fr ont passeng ersea t.
R The front passeng ersea thas been moved
as farbac kas possi ble.
R The person isseat edcor rectl y. #
Both bef oreand during thejour ney,
ensur eth at thest atus ofthefront
passeng erairbag iscor rect. If
th efront passeng erseat isoccupied, theclas‐
sif ication oftheper son orchild restra int system
on thefront passeng erseat take splace afte rth e
fr ont passeng erairb agshut offself-t est.The
PA SSENGER AIRBAGind icat orlam psdispla yth e
st atus ofthefront passeng erairbag.
Alw aysobser vetheno teson thefunc tion ofthe
PA SSENGER AIRBAGind icat orlam ps
(/ page46). Fu
nction ofthePA SSEN GERAIRBAGindic a‐
to rlam ps Se
lf-te st of aut oma ticfront passeng erair bag
shu toff
When theignition isswitc hedon,aself-t estis
per form ed dur ing whic hth etw oPA SSENGER
AIR BAGON and OFFind icat orlam pslight up
simul taneou sly. 46
Occupant safety

The
status ofthefront passeng erairbag isdis‐
pla yedvia thePA SSENGER AIRBAGind icat or
lam psafte rth eself-t est:
R ON islit:th efront passeng erairbag may
deplo ydur ing anacciden t.
The indicat orlam pgoes outafte rapp rox‐
ima tely 60 seco nd s.
R ON andOF Far eno tlit :th efront passeng er
airbag maydeplo ydur ing anacciden t.
R OFF islit:th efront passeng erairbag isdisa‐
bled. Itwill then notbe deplo yedin theev ent
of an acciden t.
If th ePA SSENGER AIRBAGON indicat orlam pis
of f,on lythePA SSENGER AIRBAGOF Find icat or
lam psho wsthest atus ofthefront passeng er
airbag. ThePASSENGER AIRBAGOF Find icat or
lam pma ybe litcon tinuousl yor be off.
If th ePA SSENGER AIRBAGOF Find icat orlam p
and the0075 restra int system warning lam p
light upsimult aneousl y,thefront passeng erseat
ma yno tbe used. Alsointhis case, donotins tall
a ch ild restra int system onthefront passeng er
seat. Have theaut omatic front passeng erairbag shut
offch eckedand repair edimmediat elyata
qu alif ied spec ialistwo rkshop.
St atus displa y
If th efront passeng erseat isoccupied, ensure,
bo th bef oreand during thejour ney,that thest a‐
tus ofthefront passeng erairbag iscor rect for
th ecur rent situa tion.
Af terin st alli ng are ar wa rd-faci ng child
re stra int system onthefront passeng er
seat :PA SSENGER AIRBAGOF Fmus tbe litcon ‐
tin uousl y. &
WARNIN GRisk ofinju ryor deat hwhen
using are ar wa rd-faci ng child restra int
sy stem while thefront passeng erairbag
is enabled
If yo usec ureach ild inare ar wa rd-faci ng
ch ild restra int system onthefront passeng er
seat andthePA SSENGER AIRBAGOF Find i‐
cat orlam pis off,th efront passeng erairbag
can deplo yin theeve ntofan acci dent.
The child could bestru ck bytheairbag. Alw
aysensur eth at thefront passeng erair‐
bag isdisabled. ThePASSENGER AIRBAG
OFF indicat orlam pmus tbe lit.
NEVER useare ar wa rd-faci ng child restra int
sy stem onaseat withan ENABL EDFRONT
AIRB AG.Thi scan result intheDE ATHof or
SERIOU SINJU RYtotheCH ILD. When
installing ach ild restra int system onthe
fr ont passeng ersea t,obse rveth eve hicle-spe‐
cif icinf ormation (/page60).
Depending onthech ild restra int system and the
st atur eof thech ild, thePA SSENGER AIRBAG
OFF indicat orlam pma ybe off.In this case, do
no tins tallth ere ar wa rd-faci ng child restra int
sy stem onthefront passeng erseat.
Ins tead, installth ere ar wa rd-faci ng child
re stra int system onasuit able rear seat .
Af terin st alli ng afo rw ard-f acin gch ild
re stra int system onthefront passeng er
seat :depen dingonthech ild restra int system
and thest atur eof thech ild, PASSENGER AIR
BA GOF Fma ybe litcon tinuousl yor be off.
Alw aysobser vethefo llo wing informatio n. Occ
upant safety 47

&
WARNIN GRisk ofinju ryor deat hdue to
inc orrect pos itioning ofthefo rw ard-
fa cing child restra int system
If yo usec ureach ild inafo rw ard-f acin gch ild
re stra int system onthefront passeng erseat
th at isposit ioned tooclose tothecoc kpit, in
th eev ent ofan acciden t,th ech ild could:
R com eint ocon tact with theve hicle inte‐
ri or ifth ePA SSENGER AIRBAGOF Find i‐
cat orlam pis lit,fo rex am ple
R bestru ck bytheairbag ifth ePA SSENGER
AIR BAGOF Find icat orlam pis off. #
Alw aysmo vethefront passeng erseat
as farbac kas possi bleand fully retract
th eseat cushion lengthadjus tment.
While doing so,alwaysmak esur eth at
th eshoulder beltstra pis cor rectl y
ro uted from theseat beltoutle tof the
ve hicle totheshoulder beltguide on
th ech ild restra int system. Theshoulder
belt stra pmus tbe routed forw ards and
do wn wardsfrom theseat beltoutle t.If
neces sary,adjus tth eseat beltoutle t and
thefront passeng erseat accor d‐
ing ly. #
Alw ayscom plywit hth ech ild restra int
sy stem manuf acturer'sinstallation
ins truct ions . When
installing ach ild restra int system onthe
fr ont passeng ersea t,obse rveth eve hicle-spe‐
cif icinf ormation (/page60).
If aper son issitting onthefront passeng er
seat :PA SSENGER AIRBAGOF Fma ybe litcon ‐
tin uousl yor be off,depen dingon theper son's
st atur e.
A per son onthefront passeng erseat must
alw aysobser vethefo llo wing informatio n:
R Ifth efront passeng erseat isoccupied byan
adult oraper son withast atur ecor respond‐
ing tothat ofan adult ,th ePA SSENGER AIR
BA GOF Find icat orlam pmus tbe off.This
ind icat esthat thefront passeng erairbag is
enabled.
If th ePA SSENGER AIRBAGOF Find icat or
lam pis lit con tinuousl y,an adult orper son wit
habuild corresponding tothat ofan adult
mus tno tuse thefront passeng erseat.
Ins tead, they should useare ar seat .
R Ifth efront passeng erseat isoccupied bya
per son ofsmaller statur e(e. g.ate enag eror
small adult), thePA SSENGER AIRBAGOF F
ind icat orlam pis eit her litcon tinuousl yor
re mains off,depe nding ontheclassif ication .
- Ifth ePA SSENGER AIRBAGOF Find icat or
lam pis off:mo vethefront passeng er
seat asfarbac kas possi ble,ortheper‐
son ofsmaller statur eshoul duse are ar
seat .
- Ifth ePA SSENGER AIRBAGOF Find icat or
lam pis lit con tinuousl y:theper son of
smaller statur eshoul dno tuse thefront
passeng erseat. &
WARNIN GRisk ofinju ryor deat hwhen
th ePA SSENGER AIRBAGOF Find icat or
lam pis lit
If th ePA SSENGER AIRBAGOF Find icat or
lam pre mains litafte rth eself-t est,th efront
passeng erairbag isdisabled. 48
Occupant safety

outle
tof theve hicle totheshoulder belt
guide onthech ild restra int system.
The shoulder beltstra pmus tbe routed for‐
wa rdsand down wardsfrom theseat beltout‐
le t.
No teson rear wa rd-faci ng and forw ard-f acin g
ch ild restra int systems onthefront
pa sseng erseat &
WARNIN GRisk ofinju ryor deat hwhen
using are ar wa rd-faci ng child restra int
sy stem while thefront passeng erairbag
is enabled
If yo usec ureach ild inare ar wa rd-faci ng
ch ild restra int system onthefront passeng er
seat andthePA SSENGER AIRBAGOF Find i‐
cat orlam pis off,th efront passeng erairbag
can deplo yin theev ent ofan acciden t.
The child could bestru ck bytheairbag.
Alw aysensur eth at thefront passeng erair‐
bag isdisabled. ThePASSENGER AIRBAG
OFF indicat orlam pmus tbe lit. NEVER
useare ar wa rd-faci ng child restra int
sy stem onaseat withan ENABL EDFRONT
AIRB AG.Thi scan result intheDE ATHof or
SERIOU SINJU RYtotheCH ILD. Obser
vethespecif icins truction sfo rth ere ar‐
wa rd-faci ng and forw ard-f acin gch ild restra int
sy stems (/page60).
Alw aysobser vethest atus ofthefront passeng er
airbag onthePA SSENGER AIRBAGOF Find ica‐
to rlam p:
R When using are ar wa rd-faci ng child restra int
sy stem onthefront passeng erseat, thefront
passeng erairbag mustalw aysbe disabl ed.
This isonl yth ecase ifth ePA SSENGER AIR
BA GOF Find icat orlam pis lit con tinuousl y
(/ page46) .
R Ifth ePA SSENGER AIRBAGOF Find icat or
lam pis off,th efront passeng erairbag isena‐
bled. Thefront passeng erairbag maydeplo y
dur ing anacciden t. Secur
ingthech ild restra int system withth e
seat beltonthefront passeng erseat
When installing abelt- secur edchild restra int
sy stem onthefront passeng erseat, always
obser vethefo llo wing:
0073 Obser
vetheno teson rear wa rd-faci ng and
fo rw ard-f acin gch ild restra int systems on
th efront passeng erseat (/page60).
0073 Obser
vethech ild restra int system manuf ac‐
tur er's installation andoper atingins truc‐
tion s.
0073 When
usingafo rw ard-f acin gch ild restra int
sy stem inwe ight categor yI: re mo vethe
head restra int from there spectiv eseat, if
possible .
Af terth ech ild restra int system has been
re mo ved, replace thehead restra int sag ain
immed iatelyand adjus tth em correctl y.
0073 The
backres tof thefo rw ard-f acin gch ild
re stra int system mus t,as faras possi ble,be
re sting ontheseat backres tof thefront
passeng erseat.
0073 If
th ehead restra int ofthech ild seat cannot
be fullyex tende dwh en itis ins talled inthe 60
Occupant safety

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions
Fron tPassenger AirbagDis-
abled SeeOperator' sMan-
ual *T
hefront passeng erairbag hasbeen disabl edeve nth ough anadult oraper son ofadult statur eis on thefront
passeng erseat. Ifadditional forc es areapplied totheseat, thewe ight thesy stem detects maybe toolow. &
WARNIN GRisk ofinju ryor fata linj urydue toadisable dfron tpasse nger airbag
If th efront passeng erairbag isdisabled, thefront passeng erairbag willnotbe deplo yedin theev ent ofan acci‐
dent andcann otper form itsintended protect ive func tion.
A per son inthefront passeng erseat could then, forex am ple, com eint ocon tact with theve hicle's interior ,
especially ifth eper son issitt ing tooclose tothecoc kpit. #
Mak esur e,bo th bef oreand during thejour ney,that thest atus ofthefront passeng erairbag iscor rect. #
Stop theve hicle immediat elyinaccor dance withth etraf fic condi tions. #
Makesur eth at no obj ect sar etrapped underth efront passeng erseat. #
Chec kth est atus oftheaut omatic front passeng erairbag actuation (/page46). #
Ifneces sary,consu ltaqu alif ied spec ialistwo rkshop immediat ely.
Front Passeng erAirb ag
Enabl edSee Operator 's
Manu al *T
hefront passeng erairbag willbeenabled whiletheve hicle isin mo tion inthefo llo wing situat ions:
R Even when ach ild, aper son ofsmaller statur eor an obj ect weighin gless than thesy stem weight thre shold is
locat edon thefront passeng erseat
R Even when thefront passeng erseat isno toccupied
The system mayde tect obje ctsorforc es that areaddin gto thewe ight applied totheseat. Displa
ymessag esand warning/ indic ator lam ps 38
1

Dr
iver' sDoo rOp en &Trans miss ion
No tin PRisk ofVehicle Rolling Away.... 394
Fr ont Passeng erAirbag Disabled See
Oper ator's Manual.... ............................. 381
Fr ont Passeng erAirbag Enabled See
Oper ator's Manual.... ............................. 381
Hazar dWa rning Flashe rsMalfunc‐
tioning. .................................................. 388
Mer cedes meconn ectServices Limi‐
te dSee Oper ator's Manual. ...................4 15
N Pe rm anen tly Ac tiveRi sk ofRo lling
Aw ay<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011> 394
Only Shiftto 'P' when Vehicle isSta‐
tio nar y...................................................3 93
Pla cetheKe yin theMar kedSpace
See Oper ator's Manual. .........................3 84
PRE-S AFEInoper ativeSee Oper a‐
to r's Manua l......... ................................. 382
Ra dar SensorsDir tySee Oper ator's
Manual. .................................................. 414 Re
versing NotPo ssible Service
Re quired ................................................ 395
Ru nFla tIndi catorInop erati ve............... 422
Ser vice Required Do NotShif tGear s
Vi sit Dealer.... ........................................3 94
St op Vehicle LeaveEngi neRunning
Wa itTrans miss ionCoolin g.. .................. 395
Ti re Press. Monit orCur rently
Un available ............................................ 417
Ti re Press. Monit orInopera tive... ........... 417
Ti re Pressur eMonit orInopera tiveNo
Wheel Sensors.. .....................................4 18
Ti re sOv erheat ed................................... 420
To Dese lect Por N, Dep ress Brak e
and StartEn gin e.. .................................. 394
To switc hengine off,pr ess and hold
St art/ Stop butt onforat lea st3
secs. orpress 3times...... ..................... 391
Tr ans miss ionMalfun ction Stop..... ........ 395 Displa
yon 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
Ch ild sa fety lock (rear door s)...................6 1
Loc king (emerg encykey). ........................ 70
Ope ning (from inside ).............................. 68
Un loc kin g(emer gency key). .................... 70
Un loc kin g(fr om insid e)...........................6 8
Door controlpan el....................................... 16
DO T,Tire Iden tificat ionNumbe r(TI N)..... 348
Dr aw bar
see Tow- bar system
Dr inking anddriving... ...............................1 36
Dr ive Awa yAssis t.... .................................. 204
Dr ive Awa yAssis t
see Protect ion agains tcollision
Dr ive position
Inser ting.. ..............................................1 45 Inde
x45
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