MERCEDES-BENZ A-CLASS SEDAN 2020 Workshop Manual

#
Ifth eseat beltpre-t ension ingisno tre duced,
mo vetheseat backres tbac kslightl y.
The locking mechanism releases. Fu
nction ofPRE-S AFE®
PL US (anticipat ory
occupant protection plus) PRE-
SAFE®
PL US can detect cer tain im pact s,
par ticular lyan imm inentrear impact ,and take
pr e-em ptive measur estoprotect theve hicle
occupants. Thesemeasur escanno tnecessar ily
pr eve ntan imm inentimpact.
PR E-S AFE ®
PL US can implem entthefo llo wing
measur esindepe ndently of eac hot her :
R Tight ening theseat belts onthedr iver's seat
and front passeng erseat.
R Increasin gbr ak epr essur ewhen theve hicle
is statio nary.This brak eapplication iscan‐
celed automaticall ywhen theve hicle pulls
aw ay.
If an accident didnotoccur ,th epr e-em ptive
measur esthat we retake nar ere ve rsed. Sy
stem limit s
The system will notinitiat ean yaction inthefo l‐
lo wing situat ions:
R when backingup
The system will notinitiat ean ybr aking applica‐
tion inthefo llo wing situat ions:
R whils tdr ivin g
or
R when entering orexitin gapar kingspace
while using ActivePa rking Assist Saf
elytransp orting childr enintheve hicl e Alw
aysobser vewhen childr enaretrav eling
in theve hicl e %
Also strictly observe thesaf etyno tesfo rth e
specif icsituation. Inthis wa yyo ucan recog‐
nize potentia lri sk sand avoiddang ersif ch il‐
dr en aretrav eling intheve hicle
(/ page50). Be
dilig ent
Bear inmind that neg lectingto secur each ild in
th ech ild restra int system mayha ve ser ious con‐
seq uences. Alwaysbe dilig entinsecur ingach ild
car efull ybef oreeve ryjou rney .
To improve protect ion forch ildr enyoung erthan
12 yearsold orunde r5 ft (1.50 m)inheight ,
Mer cedes- Benzre comme ndsyouobse rveth e
fo llo wing informatio n:
R Alw ayssecur eth ech ild inach ild restra int
sy stem suitable forth is Mer cedes -Benz vehi‐
cle.
R The child restra int system mus tbe appr opri‐
at eto theag e, we ight andsize ofthech ild.
R The vehicle seatmustbe suit able forins tal‐
ling ach ild restra int system.
Ac cid ent statis ticssho wthat childr ensecur ed
on there ar seat sar ege ner ally saf erthan chil‐
dr en secur edon thefront seats. Forth is reason ,
Mer cedes-Ben zst ro ng lyadvis esthat youins tall
a ch ild restra int system onare ar seat . Oc
cupan tsaf ety 49

Gene
ric te rm "child restra int system"
The gener icterm child restra int system isused
in this Oper ator's Manual. Ach ild restra int sys‐
te m is, forex am ple:
R Abab ycar seat
R Arear wa rd-faci ng child seat
R Aforw ard-f acin gch ild seat
R Ach ild boos terseat withabac kres tand seat
belt guide
Mer cedes-Benz recomme ndsusing ach ild
boos terseat withabac kres t.
The child restra int system mus tbe appr opriate
to theag e, we ight andsize ofthech ild.
Obser vinglaws and legalrequ irement s
Alw aysobser vetheleg alrequ iremen tswhen
using ach ild restra int system intheve hicle. Obser
vingstandar dsforch ild restra int sys‐
te ms
All child restra int systems mustmee tth efo llo w‐
ing standar ds:
R U.S. Feder alMo torVe hicle SafetySt andar ds
21 3and 225
R Canadi anMo torVe hicle SafetySt andar ds
21 3and 210.2
Conf irmatio nth at thech ild restra int system
com plies withth est andar dscan befound onan
ins truct ion label onthech ild restra int system.
This confirm atio ncan also befound intheins tal‐
lation instruct ions that areinc luded withth e
ch ild restra int system. De
tectin grisk s,avo iding danger Secur
ingsystems forch ild restra int systems
in theve hicl e
Only usethefo llo wing secur ingsystems forch ild
re stra int systems:
R The LATC H-type (ISOFIX )mou nting brac kets
R The vehicle's seatbeltsystem R
The TopTe ther anc horages
Ins talling aLA TC H-type (ISOFIX )ch ild restra int
sy stem isprefer red.
Sim plyatt aching tothesecur ingrings onthe
ve hicle canreduce therisk ofins talling thech ild
re stra int system incor rectl y.
When securingach ild withth eint egr ated seat
belt oftheLA TC H-type (ISOFIX )ch ild restra int
sy stem, alwayscom plywithth eper missible
gr oss weight forth ech ild and child restra int sys‐
te m (/ page55).
A boos terseat maybe necessar yto achie ve
pr oper seatbeltposition ingforch ildr enove r
40 lbs (18 kg )in we ight orunt ilth ey reac ha
heigh twher eath re e-point seatbeltcanbefitt ed
pr op erly wit hout aboos terseat.
Mer cedes-Benz recomme ndsasu itab lech ild
boos terseat withabac kres tand seat beltguide.
Ad vantag eof are ar wa rd-faci ng child
re stra int system
It is prefer able totrans portabab yor asmall
ch ild inasuit able rear wa rd-faci ng child restra int
sy stem. Inthis case, thech ild sits intheoppo‐ 50
Occupant safety

sit
edir ection tothedir ect ion oftra veland faces
ba ckwa rds.
Babies andsmall childr enhave com parativ ely
we ak nec kmusc lesinrelation tothesize and
we ight oftheir head. Therisk ofinjur yto thecer‐
vical spine during anacciden tcan bereduced in
a re ar wa rd-faci ng child restra int system.
Alw ayssecur each ild restra int system cor‐
re ctl y &
WARNIN GRisk ofinju ryor deat hcaused
by inc orrect ins tallation ofthech ild
re stra int system
If th ech ild restra int system isincor rectl y
ins talled onasuit able seatin gposit ion,it
can notper form itsintended protect ive func ‐
tion .
The child can notbe restra ined intheeve ntof
an acci dent, hea vybraki ng orasu dd en
ch ang eof dir ect ion. #
Alw ayscom plywit hth emanuf acturer's
ins tallation instruct ions forth ech ild
re stra int system and itscor rect use. #
Makesur eth at theent ire base ofthe
ch ild restra int system alwaysre stson
th esitt ing surface oftheseat. #
Neverpla ceobjects underorbehi nd
th ech ild restra int system, e.g.cush‐
ions. #
Alw aysuse child restra int systems with
th eor iginal coverdesi gned forth em. #
Alw aysre place damag edcovers wit h
ge nui ne covers. &
WARNIN GRisk ofinju ryor deat hfrom
unsecur edchild restra int systems inthe
ve hicle
If th ech ild restra int system isno tcor rectly
ins talled orsecur ed,itcould release inthe
ev ent ofan acciden t,sudden braking ora
sudden chang ein dir ect ion.
The child restra int system could beflung
ar oun dand hitvehicle occupants. #
Alw aysins tallch ild restra int systems
cor rectl y,eve nwh en notin use. #
Alw ayscom plywit hth ech ild restra int
sy stem manuf acturer'sinstallation
ins truct ions . R
Alw aysobser vethech ild restra int system
manuf acturer'sinstallation andopera ting
ins truct ions aswellas theve hicle-specif ic
inf ormation:
- Installth eLA TC H-type (ISOFIX )ch ild
re stra int system onthere ar seat
(/ page55).
- Sec ureth ech ild restra int system withth e
seat beltonthere ar seat (/page59 ).
- Sec ureth ech ild restra int system withth e
seat beltonthefront passeng erseat
(/ page61 ).Obser vethespecif ic
ins truction sfo rth ere ar wa rd-faci ng and
fo rw ard-f acin gch ild restra int systems
(/ page60).
If th efront passeng erseat isoccupied,
ensur e,bo th bef oreand during thejour‐
ne y,that thest atus ofthefront
passeng erairbag iscor rect forth ecur‐
re nt situa tion(/ page 45). Occupa
ntsaf ety 51

R
Obser vethewa rning labels intheve hicle
int erior and onthech ild restra int system.
R Also secur eTo pTe ther ifpr esent .
Do notmodif yth ech ild restra int system &
WARNIN GRisk ofinju rydue tomodif i‐
cations tothech ild restra int system
The child restra int system mayno long er
func tion asitis supposed toifyo umak e
mod ificat ionsor att achobj ect sto it,e.g. toys
or unsuit ableaccessor ies.This poses an
incr eased risk ofinjur y!
Ne vermodify thech ild restra int system. Only
att achaccessor ieswhic hth emanuf acturer
of thech ild restra int system has author ized
especiall yfo rth is ch ild restra int system. Onl
yuse child restra int systems whichar ein
pr oper working condit ion &
WARNIN GRisk ofinju ryor deat hcaused
by theuse ofdamag edchild restra int
sy stems
Child restra int systems ortheir retainin gsy s‐
te ms that have been subjec tedto aload in
an acc iden tma yth en notbe able toper form
th eir intended protect ive func tion.
The child can notbe restra ined intheeve ntof
an acci dent, hea vybraki ng orasu dd en
ch ang eof dir ect ion. #
Alw aysre place child restra int systems
immediat elyth at have been damag edor
in vo lved inan acciden t. #
Have thesecur ingsystems forth ech ild
re stra int systems checkedat aqu alif ied
spec ialistwo rkshop beforeins talling a
ch ild restra int system again. Av
oid direct sunli ght &
WARNIN GRisk ofburnswhen thech ild
seat isex posed todirect sunlight
If th ech ild restra int system isex posed to
dir ect sunlight orheat, partscould heatup.
Childr encould sufferbur nsfrom these parts,
par ticular lyon metallic partsof thech ild
re stra int system. #
Alw aysmak esur eth at thech ild
re stra int system isno tex posed to
dir ect sunlight . #
Protect itwit hablank et,fo rex am ple. #
Ifth ech ild restra int system has been
ex posed todirect sunlight ,allo witto
cool beforesecu ring ach ild intoit. #
Neverlea vechildr enunat tende din the
ve hicle. 52
Occupant safety

Obser
vewhen stopping orpar king &
WARNIN GRisk ofacci dent andinjury
due tochildr enleftunat tende din the
ve hicle
If ch ildr enarelef tunat tende din theve hicle,
th ey cou ld:
R Ope ndoo rs,th er eb yendang ering other
per sons orroad user s.
R Getout and bestru ck byoncom ingtraf‐
fi c.
R Ope rate vehicle equipment andbecome
tr apped, forex am ple.
In addit ion,th ech ildr encould alsosetth e
ve hicle inmo tion, forex am ple by:
R Releasing thepar king brak e.
R Changing thetra nsmiss ionposition .
R Startin gth eve hicle. #
Neverlea vechildr enunat tende din the
ve hicle. #
When leaving theve hicle, alwaysta ke
th eke ywit hyo uand lockth eve hicle. #
Keep theve hicle keyout ofreac hof
ch ildr en. &
WARNIN GRisk offata linj urydue to
ex posur eto extreme heat or col din the
ve hicle
If people –par ticular lych ildr en–ar e
ex posed toextreme temp eratur esover an
ex tende dpe riod oftime, ther eis arisk of
ser ious oreve nfa ta linj ury. #
Neverlea veanyone –pa rticular lych il‐
dr en –unat tende din theve hicle. #
Neverlea veanim alsintheve hicle unat‐
te nde d. Occu
pant safety 53

Ov
ervie wof suitable seatsintheve hicl efo rin st alli ng ach ild restra int system Secur
ingsystems forch ild restra int systems Ve
hicl eseat
Lef t/right rear seat
Favoredsecur ingsystem:
® LATC H-type (ISOFIX )ch ild seat secur ingsys‐
te m
¯ Alsosec ureTo pTe ther ifpr esent
(/ page57 ) Alt
ernati vesecur ingsystem:
R Vehicle seatbelt
Fr ont passeng erseat
Securing system:
R Vehicle seatbelt Be
sureto obser ve:
R Ifth efront passeng erseat isoccupied, ensure,
bo th bef oreand during thejour ney,that thest a‐
tus ofthefront passeng erairbag iscor rect forth e
cur rent situa tion(/ page 45) .
R Noteson aut omatic front passeng erairbag shut‐
of f(/ page44 ).
Cent errear seat
Securingsystem:
R Vehicle seatbelt
¯ Alsosecur eTo pTe ther ifpr esent
(/ page57 ) 54
Occupant safety

Ac
tiv atin g/deac tivatin gthe seat belt's spe‐
ci al seatbe ltre tract or &
WARNIN GRisk ofinju ryor deat hif a
seat beltisunf astened while th eve hicle
is in mo tion
If th eseat beltisreleased whiletheve hicle is
in mo tion, thech ild restra int system isno
long ercor rectl ysecu red. The child seat
saf etyfe atur eis deac tivated and theseat
belt isdraw nin abi tby theiner tiareel.
It is ther efor eno tpossible toeng ageth eseat
belt again. #
Pull overand stop theve hicle safely as
soon aspossible, paying attention to
ro ad and traffic condi tions. #
Activateth ech ild seat safetyfe atur e
ag ain and correctl ysecu rethech ild
re stra int system. When
enabled, thespecial seatbelt retract or
ens ures that theseat belts ofthefront
passeng erseat andrear seat sdo notslac ken
once thech ild restra int system issecur ed. The
seat belts onthefo llo wing seats areeq uip‐
ped withaspec ialseatb eltretract or:
R Front passeng erseat
R Rear seat s #
Toins tall ach ild restra int system: when
ins talling ach ild restra int system, always
obser vethemanuf acturer'sinstallation and
opera tingins truct ions aswellas theinf orma‐
tion inthis Oper ator's Manual. #
Pull theseat beltsmoo thly from theseat belt
outle t. #
Engage theseat belttongu ein theseat belt
buc kle. #
Toactiv ateth especia lseat belt retract or:
pu llth eseat beltoutfully andletth einer tia
re el retract itag ain.
Wh enthespecial seatbelt retract orisacti va‐
te d, yousho uld hear ara tche ting sound. #
Push thech ild restra int system down until
th eseat beltsitstight ly. #
Todeac tivatethe special seatbe ltre trac‐
to r:press there lease buttonoftheseat belt
buc kle. #
Hold theseat belttongu eand guide ba ck to
th eseat beltoutle t. Ins
talling theLA TC H-type (ISOFI X)child
re stra int system onthere ar seat Ins
tallingaLA TC H-type (ISOFI X)child
re stra int system onthere ar seat &
WARNIN GRisk ofinju ryifth ere ar
ben chseat/r earseat andseat backres t
ar eno teng aged
If th ere ar ben chseat/r earseat andseat
bac kres tar eno teng aged they cou ldfold for‐
wa rds, e.g. when braking suddenly orinthe
ev ent ofan acciden t.
R Ifth is isthecase, theve hicle occupant
wo uld beforc ed intoth eseat beltbythe
re ar ben chseat/r earseat orby theseat
bac kres t.The seat beltcann otprotect as
int ended andcould result inadditional
injur y. Occupant
safety 55

R
Objects orloads inthetrunk/ cargocom‐
par tmen tcann otbe restra ined bythe
seat backres t. #
Mak esur eth at theseat backres tand
th ere ar ben chseat/r earseat are
eng aged bef oreeve rytrip . If
th ere ar seat backres tis no teng aged and
loc kedin place, there dloc kve rificati onindi ca‐
to rwil lbe visib le. &
WARNIN GRisk ofinju ryor deat hif th e
per missible gross mass ofthech ild and
ch ild restra int system isexc eeded
Fo rLA TC H-type (ISOFIX )ch ild restra int sys‐
te ms inwhic hth ech ild issecur edusing the
int egr ated seat beltinthech ild restra int sys‐
te m, theper missible gross mass ofthech ild
and child restra int system is73 lb(33 kg).
If th ech ild and thech ild restra int system
to ge ther we igh mor eth an 73 lb(33 kg),th e
LA TC H-type (ISOFIX )ch ild restra int system
wit hint egr ated seat beltdoes notof fersuf fi‐ cie
ntprotect ion. Anexc essiv eload maybe
placed ontheLA TC H-type (ISOFIX )ch ild seat
att achmen tsand thech ild ma yno tbe
re stra ined intheeve ntofan acci dent, for
ex am ple. #
Ifth ech ild and thech ild restra int sys‐
te m toget her weigh mor eth an 73 lb
(33 kg),us eonl ya LA TC H-type (ISOFIX )
ch ild restra int system that sec ures the
ch ild withth eve hicle seatbelt. #
Also secur eth ech ild restra int system
wit hth eTo pTe ther belt, ifav ailable. Alw
ayscom plywit hth einf ormation aboutthe
mass ofthech ild restra int system:
R inthemanuf acturer'sinstallation andoper at‐
ing instruct ions forth ech ild restra int system
used
R onalabel onthech ild restra int system, if
pr esent
Re gular lych eckth at theper missible gross mass
of thech ild and child restra int system isstill
com plied with. When
installing ach ild restra int system, obser ve
th efo llo wing:
0073 Alw
aysobser vethecor rect useof theseats
and consider their suit ability foratt aching a
ch ild restra int system.
0073 Alw
ayscom plywithth emanuf acturer's
ins tallation andoper atingins truct ions for
th ech ild restra int system used.
0073 Mak
esur eth at thech ild's feet do notcome
int ocon tact with thefront seat. Ifneces ‐
sar y,mo vethefront seat forw ardsligh tly.
® When installing aLA TC H-type (ISOFIX )
ch ild restra int system, also obser vethefo llo w‐
ing:
0073 When
usingaGr oup 0/0+ babycar seat
and aGr oup Ire ar wa rd-faci ng child
re stra int system onare ar seat :adju st
th efront seat sothat theseat does not
to uc hth ech ild restra int system.
0073 When
usingaGr oup Ifo rw ard-f acin g
ch ild restra int system: remo vethehead
re stra int from there spectiv eseat, ifpossi‐
ble. Inaddition, thebac kres tof thech ild 56
Occupant safety

re
stra int system mus t,as faras possi ble,lie
fl at agains tth ebac kres tof theve hicle seat.
Once thech ild restra int system has been
re mo ved, replace thehead restra int simme‐
diat elyand adjus tth em correctly .
0073 Fo
rcer tain child restra int systems inwe ight
gr oup IIor III,th er ema ybe restrictions on
th emaximum sizesetting, e.g. due topossi‐
ble con tact with thero of.
0073 The
child restra int system mus tno tbe ten‐
si oned betwee nth ero of and theseat cush‐
ion and/or beinstalled facing thewr ong
dir ect ion. Wher epossible, adjustth eseat
cushion inclination accordingly.
0073 The
child restra int system mus tno tbe put
under stra in by thehead restra int s.Ad jus t
th ehead restra int sacc ording ly. 1
LATC H-type (ISOFIX )mou nting brac ket
Bef oreev eryjour ney,mak esur eth at theLA TC H-
type (ISOFIX )ch ild restra int system iseng aged
cor rectl yin bo th mounting brac kets intheve hi‐
cle. *
NO
TEBecarefu lno tto damag eth eseat
belt forth ecent erseat when installing
th ech ild restra int system #
Mak esur eth at theseat beltisno ttra p‐
ped. #
Attach theLA TC H-type (ISOFIX )ch ild
re stra int system toboth mounting brac kets
in theve hicle. Secur
ingaTo pTe ther &
WARNIN GRisk ofinju ryor deat hif th e
re ar seat backres ts areno tloc kedaf te r
ins talling TopTe ther belts
If th ere ar seat backres ts areno tloc ked, they
cou ldfold forw ards intheeve ntofan acci ‐
de nt or during braki ng orsudd en chang esof
dir ect ion.
As are sult, child restra int systems cann ot
per form their intended protect ive func tion.
Re ar seat backres ts that areno tloc kedcan Occ
upant safety 57

also
causeaddit ionalinj uries, e.g.in the
ev ent ofan acciden t. #
Alw aysloc kre ar seat backres ts afte r
ins talling TopTe ther belts. #
Obser vetheloc kve rificati onindi cator. If
th ere ar seat backres tis no teng aged and
loc kedin place, there dloc kve rificati onindi ca‐
to rwil lbe visib le.
¯ Ifth ech ild restra int system iseq uipped
wit haTo pTe ther belt :
The risk ofinjur ycan bereduced byaTo p
Te ther.The TopTe ther belt facil itat es an
ad ditiona lconnecti onbetween thech ild
re stra int system attached withLA TC H-
type (ISOFIX )and theve hicle. #
Ifnecessar y,slide head restra int 1 upw ards
(/ page93). #
Foldup cover2 ofTopTe ther anc horage
3. #
Installth eLA TC H-type (ISOFIX )ch ild restra int
sy stem withTo pTe ther.Com plywit hth e
ch ild restra int system manuf acturer'sinstal‐
lation instruct ions when doing so. #
Guide TopTe ther belt 4under head
re stra int 1 between thetw ohead restra int
bar s. #
Hook TopTe ther hook 5ofTopTe ther belt
4 intoTo pTe ther anc horage3 without
twis ting. #
Tensi on TopTe ther belt 4.Com plywit hth e
ch ild restra int system manuf acturer'sinstal‐
lation instruct ions when doing so. #
Folddo wn cover2 ofTopTe ther anc horage
3. #
Ifneces sary,slide head restra int 1 down‐
wa rds(/ page93). Makesur eth at youdo 58
Occupan tsaf ety