2023 MERCEDES-BENZ A CLASS ECU

#
Alwayssecur eper sons under5T
(1.5 0m) tallin asuit able restr aint sys-
te m. &
W W
ARNIN G ARNIN
GRisk ofinjuryor deat hdue to
damag edormodi/ed seatbelts
Seat belts canno tpr ov ide protection inthefo l-
lo wing situations:
R The seat beltisdamag ed,has been modi-
/ed, isex tremel ydir ty,blea ched ordyed
R The seat beltbuckleisdamag edor
ex tremel ydir ty
R Modi/cat ionsha ve been made tothe
Emer gency Tensio ning Device ,sea tbelt
anc horageor sea tbelt retract or
Seat belts maysust ainnon-visib ledam agein
an acc ident, e.g.duetoglas sspl inters.
Mo di/ed ordam aged sea tbelts couldtear or
fa ilin theev ent ofan accident, forex am ple.
Modi/ed Emergency Tensio ning Device scou ld
ac cid ent allytrigg eror failto func tionas inten-
de d. #
Nevermodify theseat beltsystem, for
ex am ple theseat belt, seatbeltbuckle,
Emer gency Tensio ning Device ,sea tbelt
anc horageand seatbelt retract or. #
Mak esur eth at theseat belts areundam-
ag ed, notwo rnand clean . #
Alwaysha ve theseat belts checked
immediat elyaTer anaccident ataqu ali-
/ed special istwo rkshop. Onl
yuse seat beltswhic hha ve been approvedfo r
yo ur vehicle byMer cedes-Be nz. &
W W
ARNI NG ARNI
NGRisk ofinjur yor dea thfrom
de plo yedpy rotech nic Eme rgency Tensio n-
ing Device s
Pyro tech nic Eme rgency Tensio ning Device s
th at have been deployedar eno long eroper a-
tional andareunable toper form their inten-
ded protectiv efunction . #
Ther efor e, have deplo yedpy rotech nic
Eme rgency Tensio ning Device simm edi-
at elyre placed ataqu ali/ed special ist
wo rkshop. Mer
cedes- Benzre commen dsthat youha ve the
ve hicle towe dto aqu ali/ed special istwo rkshop
aTer anacciden t.
* N NO O
TE TE
Damag ecaused bytrapp ingthe
seat belt If
an unu sed seat beltisno tfu lly re tract ed, it
ma ybeco metrapp edinthedoor orintheseat
mec hanism. #
Alwaysensu rethat an unu sed seat belt
is fully re tract ed. FF
ast ast
ening seatbelts ening
seatbelts If
th eseat beltispulled quickl yor shar ply, the
seat beltretract orloc ks.The seatbelt strap can-
no tbe pulle dout anyfur ther. Occupant
safety
41 41

R
Onlyhold thesteer ing wheel bythesteer ing
wheel rim. This allowstheairbag tobe fully
deplo yed.
R Alwayslean agains tth eseat backrest when
th eve hicle isin mo tion .Do notlean forw ards
or agains tth edoor orside windo w.Youma y
ot her wise beinthedeplo yment area ofthe
airbag s.
R The occupan tsmus talw ayske ep their feet on
th e0oor .Do notput your feet on thecoc kpit,
fo rex ample. Your feet ma yot her wise beinthe
deplo yment area oftheairbag.
R Ifch ildr enaretrave ling intheve hicle, observe
th eadditional notes(/ page52) .
R Alwaysst ow and secur eobj ects correctl y.
Objects intheve hicle interior maypr eve ntan air-
bag from functi oning correctl y.Eac hve hicle occu-
pant mustalw aysmak esur eof thefo llo wing in
par ticular :
R Ther ear eno people, animals orobjects
be tween theve hicle occupan tsand anairbag .
R Ther ear eno objects between theseat, door
and door pillar (B-pillar). R
Ther ear eno har dobjects, e.g.coat hangers,
hanging onthegr ab handl esorcoat hooks.
R Ther ear eno accessor ies,suchas mobil ena vi-
ga tion devices ,mobi lepho nes orcup holders,
wit hin thedeplo yment area ofan airbag, e.g.
on thecoc kpit, onthedoor ,on theside win-
do wor on theside trim.
In addition, noconnecting cables,tensio ning
str aps orretaining straps must berouted or
att ached totheve hicle within thedeplo yment
ar ea ofan airbag. Alwayscom plywit hth e
accessor ymanu factur er's installation instruc-
tion sand, inpar ticul ar,th eno teson suit able
places forinst allation.
R Ther ear eno hea vy,shar p-edg edorfragile
objects inthepoc kets of your clo thing. Store
suc hobjects inasuit able place. LimitLimit
ations oft ations
ofthe prot he
protection pro ection
provided b vided
by airbags y
airbags &
W W
ARNIN G ARNIN
GRisk ofinjur ydue tomodi/ca-
tions totheco verof an airbag
If yo umodify theco verof an airbag ora1x
objects suchas stic kers to it,theairbag may
no long erfunction correctl y. #
Nevermodify theco verof an airbag and
do nota1x objects toit. The
installation location ofan airbag isident i/ed
by theAIRB AGsymbol (/page43) .
Obj ects inthedeplo yment area ofan airbag may
pr ev ent theairbag from function ingcorrectl y. &
W W
ARNI NG ARNI
NGRisk ofinjur yfrom objec tsin
th edeplo yment area ofan airbag
Objects inthedeplo yment area ofan airbag
can hinder orprev ent thecor rect deplo yment
of theairbag.
The airbag mayth en deplo yin an uncontr olled
manner andmayev en cause additional inju-
ri es totheve hicle occupan tsby deplo ying. Occupant
safety
45 45

This
maybe thecase inpar ticular ifth eairbag
is int egratedint oth eseat. #
Alwaysst ow and secur eobj ects cor-
re ctl y. #
Beforeco mm encingyour jour ney,mak e
sur eth at no objects arestowe din the
deplo yment area ofan airbag. &
W W
ARNIN G ARNIN
GRisk ofinju ryor deat hdue to
th euse ofunsuit ableseat covers
Due tounsuit ableseat covers,th eairbags
canno tpr otect vehicle occupan tsas intend ed.
In addit ion,th eoper ation oftheaut omatic
fr ont passeng erairbag shuto.could be
re str icte d. #
Youshould onlyuse seat covers that
ha ve been approved forth ecor respond -
ing seats byMer cedes-Be nz. &
W W
ARNI NG ARNI
NGRisk ofinjur ydue tomalfun c-
tioni ngsensor sin thedoor
The function oftheairbags canbeimpair ed
due tomodi/cation sor incor rect wo rkper -
fo rm ed on thedoor sor door trim, orifth e
door sar edamag ed. #
Nevermodify thedoor sor par tsof the
door s. #
Alwaysha ve workon thedoor sor door
tr im car ried out ataqua li/ed specialist
wo rkshop. &
W W
AR NIN G AR
NIN GRisk ofinjurydue todeplo yed
airbag
A depl oyedairbag nolong ero.er san ypr otec-
tion. #
Have theve hicle towe dto aquali/ed
special istwo rkshop inorder tohave the
deplo yedairbag replaced. Ha
ve deplo yedairbags replaced immediat ely. SS
t t
atus oft atus
ofthe fr he
front passen g ont
passen ger fr er
front airbag ont
airbag FF
unct ionoft unct
ionofthe aut he
aut omati cfr omati
cfront passen g ont
passen ger airbag er
airbag
shut shut
o. o.
The automati cfront passen gerairbag shuto.is
able todetect whe ther thefront passeng erseat is
occupied byaper son orach ild restr aint system .
Th efron tpa sseng erairb ag andfron tpa sseng er
kn ee airb ag areena bled ordisa bled acco rdingl y. &
W W
ARNI NG ARNI
NGRisk ofinjur yor dea thdue to
objects undertheco-dr iver seat
Objects trapped undertheco-dr iver seat can
int erfere wit hth efunction oftheaut omatic
co-dr iver airbag shuto.ordamag eth esy stem. #
Donotst or ean yobjects undertheco-
dr iver seat. #
When theco-dr iver seat isoccupied,
mak esur eth at no objects aretrapped
und ertheco-dr iver seat. When
installing ach ild restr aint system onthe
fr ont passeng erseat,ob serveth eve hicle-spe ci/c
inf ormatio n(/ page62). Also,alw aysobser ve
th eno teson rear wa rd-faci ng orforw ard-f acing 4646
Occupan
tsaf ety

Self
-t Self
-tes est
ofaut t
of autom atic fr om
atic front passeng ont
passeng erairb ag shut- er
airb ag shut-
o. o.
Wh entheve hicle isswitc hedon,aself -tes tis per -
fo rm ed dur ing whic hth etw oPA SSENGE RAIR
BA GON and OFFind icat or lamp slig ht up simul ta-
neous ly.
The statu sof thefront passeng erairbag isdis-
pla yedvia thePA SSENGE RAIR BA Gind icat or
la mp saTer theself-t est:
R ON islit: ON
islit: thefront passeng erairbag may
deplo ydur ing anaccident.
The indicat orlam pgoes outaTer 60seconds.
R ON and OFF ar ON
and OFF areno e
no tlit: t
lit: thefront passeng er
airbag maydeplo ydur ing anaccident.
R OFF islit: OFF
islit: thefront passeng erairbag isdisa-
bled. Itwill then notbe deplo yedin theev ent
of an accident.
If th ePA SSENGE RAIR BA GON indicat or lamp is
o., onlyth ePA SSENGE RAIR BA GOF Find icat or
la mp showsthestatus ofthefront passeng erair-
bag. ThePASSENGE RAIR BA GOF Find icat or lamp
ma ybe litcontin uouslyor be o.. If
th ePA SSENGE RAIR BA GOF Find icat or lamp
and the0075 restr aint system warning lamplight
up simult aneousl y,thefront passeng erseat may
no tbe used. Alsointhis case, donotinst alla
ch ild restr aint system onthefront passeng er
seat. Have theaut omatic front passeng erairbag
shut o.checkedand repair edimmediat elyat a
qu ali/ed special istwo rkshop.
S S
t t
atus displa y atus
displa y
If th efront passeng erseat isoccupied, ensure,
bo th bef oreand during thejour ney,that thesta-
tus ofthefront passeng erairbag iscor rect forth e
cur rent situ atio n.
AT er AT
erinst inst
alling ar all
ing arear w ear
war ar
d-f d-f
acing c ac
ing chil dr hil
dres estr tr
aint aint
sy st sy
stem ont em
onthe fr he
front passeng ont
passeng ersea t er
sea t: :
PA SSENGE R
AI R BA GOF Fmu stbe litcontin uously. &
W W
ARNI NG ARNI
NGRisk ofinjur yor fata linjur y
when usingare ar wa rd-faci ng child
re str aint system while th eco-dr iver airbag
is enabled
If yo usecur each ild inare ar wa rd-faci ng child
re str aint system ontheco-dr iver seat andthe
PA SSENGE RAIR BA GOF Find icat or lamp is o.,
theco-dr iver airbag candeplo yin the
ev ent ofan accident.
The child could bestruckby theairbag. #
Alwaysensu rethat theco-dr iver airbag is
disabled. ThePASSENGE RAIR BA GOF F
ind icat or lamp must belit. #
NEVER useare ar wa rd-faci ng child
re str aint system onase at with an ENA -
BL ED FRONT AIRBAG; DEA THorSER I-
OUS INJUR Yto theCHILD canoccur . When
installing ach ild restr aint system onthe
fr ont passeng erseat,ob serveth eve hicle-spe ci/c
inf ormatio n(/ page61).
Depen dingon thech ild restr aint system andth e
st at ur eof thech ild, thePA SSENGE RAIR BA GOF F
ind icat or lamp maybe o.. Inthis case, donot
inst allthere ar wa rd-faci ng child restr aint system
on thefront passeng erseat.
Inst ead, installth ere ar wa rd-faci ng child restr aint
sy stem onasu itab lerear seat.
ATer ATer
inst ins
tallin gaf allin
gafor w or
war ar
d-f d-f
acing c acing
child r hild
res es
tr tr
aint sy aint
sys- s-
t t
em ont em
onthe fr he
front passen g ont
passen ger seat er
seat: :
depen dingon
th ech ild restr aint system andth estatur eof the 4848
Occupa
ntsaf ety

ch
ild, PASSENGE RAIR BA GOF Fma ybe litcontin -
uo uslyor be o.. Alwaysobser vethefo llo wing
inf ormation. &
W W
ARNIN G ARNIN
GRisk ofinjur yor deat hdue to
incor rect positi oningof thefo rw ard-f acing
ch ild restr aint system
If yo usecur each ild inafo rw ard-f acing child
re str aint system onthefront passeng erseat
th at isposit ioned tooclose tothecoc kpit, in
th eeve ntofan accid ent, thech ild could:
R come intocont actwithpar tsof theve hi-
cle's interior ifth ePA SSENGE RAIR BA G
OF Find icat or lamp islit, forex am ple
R bestru ck bytheairbag ifth ePA SSENGE R
AI R BA GOF Find icat or lamp iso. #
Alwaysmo vethefront passeng erseat as
fa rbac kas possible andfullyre tract the
seat cushion lengthadju stment .While
doin gso, alwaysmak esur eth at the
shoulde rbelt stra pis cor rectl yro uted
fr om theseat beltoutle tof theve hicle to
th eshoulder beltguide onthech ild
re str aint system .Th esh ou lder beltstr ap mu
stbe routed forw ards and down wards
fr om theseat beltoutle t.Ifnecessar y,
adju stthefront passeng erseat accor d-
ingl y. #
Alwayscom plywit hth ech ild restr aint
sy stem manufac ture r's inst allation
inst ruction s. When
installing ach ild restr aint system onthe
fr ont passeng erseat,ob serveth eve hicle-spe ci/c
inf ormatio n(/ page61).
If aper If
aper son issitt ing ont son
issitt ing onthe fr he
front passen g ont
passen ger seat er
seat: :
PA SSENGE RAIR BA GOF Fma ybe litcontin uously
or be o., dependin gon theper son's statur e.
A per son onthefront passeng erseat must always
obser vethefo llo wing information:
R Ifth efront passeng erseat isoccupied byan
adult oraper son withast atur ecor respond ing
to that of an adult ,th ePA SSENGE RAIR BA G
OF Find icat or lamp must beo.. This indicat es
th at thefront passeng erairbag isenabled.
If th ePA SSENGE RAIR BA GOF Find icat or
la mp islit continuousl y,an adult orper son wit
habuil dcor respond ingtothat of an adult
mus tno tuse thefront passeng erseat.
Inst ead, 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 SSENGE RAIR BA GOF F
ind icat or lamp iseit her litcontinuousl yor
re mains o.,dependi ngon theclassi/ cation.
- Ifth ePA SSENGE RAIR BA GOF Find icat or
la mp iso.: movethefront passeng erseat
as farbac kas possible, ortheper son of
smaller statur eshould useare ar seat.
- Ifth ePA SSENGE RAIR BA GOF Find icat or
la mp islit continuousl y:theper son of
smaller statur eshould notuse thefront
passeng erseat. &
W W
ARNIN G ARNIN
GRisk ofinjur yor deat hwhen
th ePA SSENGE RAIR BA GOF Find icat or
la mp islit
If th ePA SSENGE RAIR BA GOF Find icat or
la mp remains litaTer theself-t est,thefront
passeng erairbag isdisabled. Occupant
safety
49 49

Be
dilig Be
diligent ent
Bea rin mind that neg ligence when securinga
ch ild inthech ild restr aint system mayha ve ser i-
ous conse quences. Alwaysbe diligent insec uring
a ch ild car efull ybef oreev eryjour ney.
Ne verallo wbabies andchildr entotrave lsitting
on thelap ofano ther vehicle occupan t.
To improve protection forch ildr enyoung erthan
12 yearsold orund er5T (1.5 0m) inheig ht,
Mer cedes- Benzre commen dsyouobser vethefo l-
lo wing information:
R Alwayssecur eth ech ild inach ild restr aint sys-
te m suit able forth is Mer cedes-Benz vehicle.
R The child restr aint system mustbe appropr iate
to theag e, we ight andsize ofthech ild.
R The vehicle seatmustbe suit able forinst alling
a ch ild restr aint system .
Ac ciden tst atis tics showthat childr ensecur edon
th ere ar seats arege ner allysa ferth an childr en
secur edon thefront seats. Forth is reason,
Mer cedes- Benzst ro ngl yadvi sesthat youinst alla
ch ild restr aint system onare ar seat. The
g The
gene r ene
ric t ic
ter er
m c m
child r hild
res es
tr tr
aint syst aint
system em
The gener icterm child restr aint system isus ed in
th is Oper ator's Manual. Ach ild restr aint system
is ,fo rex am ple:
R Abab ycar seat
R Arear wa rd-faci ng child seat
R Aforw ard-f acing child seat
R Ach ild boost erseat withabac krest and seat
belt guide
Mer cedes-Benz recommen dsusing ach ild
boost erseat withabac krest.
The child restr aint system mustbe appropr iate to
th eag e, we ight andsize ofthech ild.
Obser v Obser
ve law e
laws and leg s
and legalr al
req eq
uir uir
ements ements
Alw aysobser vetheleg alrequ irements when
using ach ild restr aint system intheve hicle.
Obser v Obser
ve st e
standar andar
dsf ds
for c or
child r hild
res es
tr tr
aint syst aint
systems ems
All child restr aint system smu stme etthefo llo wing
st andar ds:
R U.S. Feder alMo torVe hicle SafetySt andar ds
213 and225 R
Canad ianMotorVe hicle SafetySt andar ds213
and 210. 2
Con/r mation that thech ild restr aint system com-
pl ieswi th thestandar dscan befound onan
inst ruction labelonthech ild restr aint system .
Th isco n/r mati oncan alsobe found intheinst al-
lation instruction sth at areincl uded withth ech ild
re str aint system . De
t De
tec ting r ec
ting ris k is
ks, av s,
avoiding dang oiding
danger er
SecurSecur
ingsyst ing
systems f ems
for c or
child r hild
res est
r tr
aint syst aint
systems in ems
in
t t
he v he
vehicle ehicle
Onl yuse thefo llo wing secur ingsystems forch ild
re str aint system s:
R TheLA TC H-ty pe(ISOFI X)secur ing rings
R The vehicle' sseat beltsystem
R The TopTe ther anc horages
Inst alling aLA TC H-ty pe(ISOFI X)child restr aint
sy stem isprefer red.
Sim plyatt aching tothesecur ingrings ontheve hi-
cle can reduce therisk ofins talling thech ild
re str aint system incorrectl y. 5252
Occupa
ntsaf ety

When
securingach ild withth eint egratedseat
belt oftheLA TC H-ty pe(ISOFI X)child restr aint
sy stem ,al wa ys com plywit hth eper missible gross
we ight forth ech ild and child restr aint system
(/ page 56).
A boost erseat maybe necessa ryto achie ve
pr oper seatbeltpositionin gfo rch ildr enover
40 lbs (18 kg)inwe ight oruntil they reac ha
heig htwher eath re e-point seatbeltcanbefas-
te ned prope rly wit hout aboos terseat.
Mer cedes-Benz recommen dsasuit able child
boost erseat withabac krest and seat beltguide.
A A
dv dv
ant ant
ag ag
eof ar e
of arear w ear
war ar
d-f d-f
acing c acing
child r hild
res estr tr
aint sy aint
sys- s-
t t
em em
It is prefer able totransp orta bab yor asma llch ild
in asuit able rear wa rd-faci ng child restr aint sys-
te m. Inthis case, thech ild sits intheopposit e
dir ection tothedir ection oftrav el and faces back-
wa rds.
Babi esand small childr enhave com parativ ely
we ak nec kmuscle sin relation tothesize and
we ight oftheir head. Therisk ofinjuryto thecer -
vical spine during anaccident canbereduced ina
re ar wa rd-faci ng child restr aint system . Alw
ay Alw
ayssecur s
secur eac e
achild r hild
res es
tr tr
aint syst aint
system corr em
correctl y ectl
y &
W W
AR NIN G AR
NIN GRisk ofinjuryor deat hdue to
incor rect ins tallation ofthech ild restr aint
sy stem
Th ech ild can then notbe protect edor
re str ained asintend ed. #
Besure tocom plywit hth emanuf actur-
er's installation instruction sfo rth ech ild
re str aint system andits co rrect use. #
Mak esur eth at theentir ebase ofthe
ch ild restr aint system alwa ys rests on
th esitting surface oftheseat. #
Neverplace objects (e.g.cushions)
under orbehind thech ild restr aint sys-
te m. #
Use child restr aint system son lywit hth e
or iginal coverdesigned forth em. #
Alwaysre place damag edcovers wit h
ge nuine covers. &
W W
ARNI NG ARNI
NGRisk ofinjur yor dea thdue to
unsecur edchild restr aint system sin the
ve hicle
If th ech ild restr aint system isinc orrectl y
ins talled ornotsecur ed,itcan come loose.
The child restr aint system could be 0ung
ar oun dand hitvehicle occupan ts. #
Alwaysins tallch ild restr aint system sco r-
re ctl y,ev en when notin use. #
Alwayscom plywit hth ech ild restr aint
sy stem manufac ture r's inst allation
inst ruction s. R
Alwaysobser vethech ild restr aint system
ma nufac ture r's inst allation andoper ating
inst ruction sas wellas theve hicle-spe ci/c
inf ormatio n:
- Installing theLA TC H-ty pe(ISOFI X)child
re str aint system ontheright and leTrear
seats (/page56).
- Secur ing thech ild restr aint system with
th eseat beltonthere ar seat
(/ page60) . Occupan
tsaf ety
53 53

-
Sec uring thech ild restr aint system with
th eseat beltonthefront passeng erseat
(/ page62). Obser vethespeci/c
inst ruction sfo rth ere ar wa rd-faci ng and
fo rw ard-f acing child restr aint system s
(/ page 61).
If th efront passeng erseat isoccupied,
ensur e,bo th bef oreand during thejour -
ne y,that thestatus ofthefront passeng er
airbag iscor rect forth ecur rent situ atio n
(/ page47).
R Obs erve thewa rning labels intheve hicle inte-
ri or and onthech ild restr aint system .
R Alsose cu re TopTe ther ifpr esent.
Do no Do
notmodify t t
modify the c he
child r hild
res estr tr
aint syst aint
system em
&
W W
ARNIN G ARNIN
GRisk ofinjur ydue tomodi/ca-
tions tothech ild restr aint system
Th ech ild restr aint system can nolongerfunc-
tion proper ly.This posesan incr easedrisk of
inj ury. #
Nevermodify ach ild restr aint system . #
Onlya1x accessor ieswhic hha ve been
speciall yappr ovedfo rth is ch ild restr aint
sy stem bythech ild restr aint system 's
ma nufac ture r. OnlOnl
yuse c y
use child r hild
res est
r tr
aint syst aint
systems whic ems
whichar h
ar ein e
in
pr pr
oper w oper
wor or
king conditi on king
conditi on &
W W
ARNIN G ARNIN
GRisk ofinjuryor deat hcaused
by theuse ofdamag edchild restr aint sys-
te ms
Child restr aint system sor their retaining sys-
te ms that have been subject edtostr essin an
ac cide nt ma yno tbe able toper form their
int ended protectiv efunction .
It ma ybe thecase that thech ild canno tbe
pr oper lyrestr ained . #
Alwaysimmed iatelyre place child
re str aint system sth at have been dam-
ag ed orinvo lved inan accident. #
Have thesecur ingsystems forth ech ild
re str aint system sch eckedat aqu ali/ed
special istwo rkshop beforeins talling a
ch ild restr aint system again. AA
v v
oi d dir oi
d direc tsu nli gh t ec
tsu nli gh t &
W W
ARN ING ARN
INGRiskof burnswhen thech ild
seat isex posed todirect sunlight
If th ech ild restr aint system isex posed to
dir ect sunlight orheat, partscould heatup
ex cessiv ely.
Childr encould su.er burnsfrom these parts,
par ticular lytheme tallic partsof thech ild
re str aint system . #
Alwaysmak esur eth at thech ild restr aint
sy stem isno tex posed todirect sunlight. #
Coverth ech ild restr aint system with a
blank et,fo rex am ple. #
Ifth ech ild restr aint system hasbe en
ex posed todirect sunlight, allowitto
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