2020 MERCEDES-BENZ S-CLASS ECU

&
WARNIN GRisk ofinju ryor deat hdueto
inc orrect pos itioning ofthef orwa rd-
fa cing child restra int system
If yo us ecureac hildinaf orwa rd-facin gchild
re stra int system onthef ront passeng erseat
and youp ositiont he front passeng erseat too
clos etot he coc kpit, inthee vent ofan acci ‐
de nt, thec hild could :
R Come intoc ontact with thev ehicle inte‐
ri or ifth eP ASSENGER AIRBAGO FFind i‐
cat orlam pislit,f or exam ple.
R Bestru ck bythea irbag ifth e
PA SSENGER AIRBAGO FFind icat orlam p
is off. #
Alw aysm ove thef ront passeng erseat
as farb acka spossi bleand fully retract
th es eat cushion lengthadjus tmen t.
Alw aysm akes uret hat thes houlder belt
st ra pi sc orrectly routed from thes eat
belt outle tonthe vehicle tothes houl‐
der belt guide onthec hild restra int sys‐
te m. The shou lderbeltstra pm ustb e
ro uted forw ards and down wardsf rom
th ev ehicle beltoutle t.Ifnecessar y, adjus
tthe seat beltoutle tand thef ront
passeng erseat accor dingly. #
Alw ayso bser vethec hild restra int sys‐
te mm anufactur er'sinstallation instruc‐
tion s. When
installing achild restra int system onthe
fr ont passeng ersea t,obse rvet he vehicle-spe‐
cif icinf ormation (/page60).
If ap erson issitting onthef ront passeng er
seat :PA SSENGER AIRBAGO FFma ybelitcon ‐
tin uousl yorbeo ff,d epen dingo nthe per son's
st atur e.
Ap erson onthef ront passeng erseat must
alw ayso bser vethef ollo wing information:
R Ifth ef ront passeng erseat isoccupied byan
adult orap erson withas tatur ec orrespond‐
ing tothat ofan adult ,the PASSENGER AIR
BA GO FFind icat orlam pm ustb eo ff.T his
ind icat esthat thef ront passeng erfront air‐
bag isenabled.
If th eP ASSENGER AIRBAGO FFind icat or
lam pislitcon tinuousl y,an adult orper son
wit hab uildcorresponding tothat ofan adult shoul
dnotuse thef ront passeng erseat.
Ins tead, they should usearear seat.
R Ifth ef ront passeng erseat isoccupied bya
per son ofsmaller statur e(e.g. at eenag eror
small adult), theP ASSENGER AIRBAGO FF
ind icat orlam peither light supc ontin uousl y
or remains off,depe nding onther esult ofthe
cla ssificati on.
- Ifth eP ASSENGER AIRBAGOFF indicat or
lam piso ff:m ove thef ront passeng er
seat asfarb acka spossi bleorthep erson
of smaller statur eshoul dusearear seat.
- Ifth eP ASSENGER AIRBAGOFF indicat or
lam pislitcont inuously: thep erson of
smaller statur eshoul dnotuse thef ront
passeng erseat. &
WARNIN GRisk ofinju ryor deat hwhen
th eP ASSENGER AIRBAGO FFind icat or
lam pislit
If th eP ASSENGER AIRBAGO FFind icat or
lam premain slitaf te rt he system self-t est,
th ef ront passeng erair bag isdeactiv ated. It
will notb ed eplo yedi nt he eve ntofan acci ‐ Occu
pant safety 47

Yo
uw illne ed toper form certain settings your‐
self . #
Ifth es eat belt pre-t ension ingisno treduced,
mo vethes eat backres tb acks lightl 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 ptivem easur estoprotect thev ehicle
occupants. Thesemeasur escanno tnecessar ily
pr eve ntan imm inentimpact.
PR E-S AFE ®
PL US can implem entthef ollo wing
measur esindependentl yofeacho ther :
R Tight ening thes eat belts onthed rive r's seat
and front passeng erseat.
R Vehicl eswith electricrear seats: tighten
th es eat belts ontheo uter rear seat s.
R Incr easin gbrake pressur ewhen thev ehicle
is statio nary.This brak ea pplication iscan‐
celed automaticall ywhen thev ehicle pulls
aw ay. If
an accident didnoto ccur ,the pre-em ptive
measur esthat we retake na rereve rsed.
Sy stem limit s
The system will notinitiat eanyaction inthef ol‐
lo wing situations:
R when backing up
The system will notinitiat eanybraking applica‐
tion inthef ollo wing situations:
R whils tdrivin g
or
R when entering orexitin gap arkin gspace
while using ActiveP arking Assist Saf
elyt ransp orting childr eninthev ehic le Alw
ayso bser vewhen childr enaret rave ling
in thev ehic le %
Alsostrictl yobserve thes afet yn otes fort he
specif icsituation. Inthis wa yy ou can recog‐
nize potentia lrisk sa nd avo iddang ersi fc hil‐
dr en aret rave ling inthev ehicle
(/ page50). Be
dilig ent
Bear inmind that neg lectingtos ecur eac hildin
th ec hild restra int system mayhave serious con‐
seq uences. Alwaysb ed iligent insecur ingachild
car efull ybefor ee very jou rney .
To improve protect ion forc hildr enyoung erthan
12 yearso ldor unde r5ft(1.50 m)inheight ,
Mer cedes- Benzrecom mends youo bse rvet he
fo llo wing informatio n:
R Alw ayss ecur ethe child inac hild restra int
sy stem suitable fort his Mer cedes-Benz vehi‐
cle.
R The child restra int system mus tbea ppr opr i‐
at et ot he age, we ight andsize ofthec hild.
R The vehicle seatmustbes uitable fori ns tal‐
ling achild restra int system.
Ac cid ent statis ticss howt hat childr ensecur ed
on ther ear seats areg ene rallys afer than chil‐
dr en secur edon thef ront seats. Forthis reason ,
Mer cedes-Ben zstrong lyadvis esthat youi nstall
ac hild restra int system onarear seat. Occupan
tsafet y 49

Gene
rict erm" child restra int system"
The gener icterm child restra int system isused
in this Oper ator's Manual. Achild restra int sys‐
te mi s,fore xamp le:
R Ababyc arseat
R Arear ward-faci ng child seat
R Aforwa rd-facin gchild seat
R Achild boos ters eat withab ackres ta nd seat
belt guide
Mer cedes-Benz recomme ndsusing achild
boos ters eat withab ackres t.
The child restra int system mus tbea ppr opr iate
to thea ge,w eight andsize ofthec hild.
Obser vinglaws and legalrequ irement s
Alw ayso bser vethel eg alrequ iremen tswhen
using achild restra int system inthev ehicle. Obser
vingstandar dsforc hild restra int sys‐
te ms
All child restra int systems mustmeetthe follo w‐
ing standar ds:
R U.S. Feder alMo torV ehicle SafetyS tandar ds
21 3a nd 225
R Canadi anMo torV ehicle SafetyS tandar ds
21 3a nd 210.2
Conf irmatio nthat thec hild restra int system
com plies withthe standar dscan befound onan
ins truct ion label onthec hild restra int system.
This confirm atio ncan also befound inthei nstal‐
lation instruct ions that arei nc luded withthe
ch ild restra int system. De
tectin grisk s,avo iding danger Secur
ingsystems forc hild restra int systems
in thev ehic le
Onl yusethef ollo wing secur ingsystems forc hild
re stra int systems:
R The LATC H-type (ISOFIX )mounting brac kets
R The vehicle's seatbeltsystem R
The TopT ether anchorages
Ins talling aLATCH -type (ISOFIX )child restra int
sy stem isprefer red.
Sim plya ttac hing tothes ecur ingrings onthe
ve hicle canreduce ther isk ofins talling thec hild
re stra int system incor rectl y.
When securingachild withthe integr ated seat
belt oftheL ATCH -type (ISOFIX )child restra int
sy stem, alwaysc om ply withthe per missible
gr oss weight fort he child and child restra int sys‐
te m( /pag e55).
Ab oos ters eat mayben ecessar ytoa chieve
pr oper seatbeltposition ingforc hildr enove r
40 lbs (18k g)inwe ight orunt ilth ey reac ha
heigh twher eat hree-point seatbeltcanbefitt ed
pr op erly wit hout aboos ters eat.
Mer cedes-Benz recomme ndsasuita blec hild
boos ters eat withab ackres ta nd seat beltguide.
Ad vantag eofar earward-faci ng child
re stra int system
It is prefer able totrans portab abyo ras mall
ch ild inas uitable rear wa rd-faci ng child restra int
sy stem. Inthis case, thec hild sitsintheo ppo‐ 50
Occupant safety

sit
ed irection tothed irect ion oftra vela nd faces
ba ckwa rds.
Babies andsmall childr enhave com parativ ely
we ak nec km usclesinrelation tothes ize and
we ight oftheir head. Therisk ofinjur ytot he cer‐
vical spine during anaccident canbereduced in
ar ear ward-faci ng child restra int system.
Alw ayss ecur eac hildrestra int system cor‐
re ctl y &
WARNIN GRisk ofinju ryor deat hcaused
by inc orrect ins tallation ofthec hild
re stra int system
If th ec hild restra int system isincor rectl y
ins talled onasuitable seatin gposit ion, it
can notp erform itsintended protect ivef unc ‐
tion .
The child can notb erestra ined inthee vent of
an acci dent, hea vybraki ng oras udden
ch ang eofdirect ion. #
Alw aysc om plyw itht he manuf acturer's
ins tallation instruct ions fort he child
re stra int system and itscor rect use. #
Makesur ethat thee ntireb ase ofthe
ch ild restra int system alwaysr ests on
th es itting surface ofthes eat. #
Neverp lace objects underorbehi nd
th ec hild restra int system, e.g.cush‐
ions. #
Alw aysu sechild restra int systems with
th eo riginal coverd esi gned fort hem. #
Alw aysr eplace damagedcovers wit h
ge nui ne covers. &
WARNIN GRisk ofinju ryor deat hfrom
unsecur edchild restra int systems inthe
ve hicle
If th ec hild restra int system isno tc orrectly
ins talled orsecur ed,itcould release inthe
ev ent ofan acciden t,sudden braking ora
sudden chang eind irect ion.
The child restra int system could beflung
ar oun dand hit vehicle occupants. #
Alw aysi ns tallch ild restra int systems
cor rectl y,eve nw henn otinuse. #
Alw aysc om plyw itht he child restra int
sy stem manuf acturer'sinstallation
ins truct ions . R
Alw ayso bser vethec hild restra int system
manuf acturer'sinstallation andopera ting
ins truct ions aswellas thev ehicle-spec ific
inf ormation:
- Installth eL ATCH -type (ISOFIX )child
re stra int system onther ear seat
(/ page55).
- Sec uret he child restra int system withthe
seat beltonther ear seat (/page59).
- Sec uret he child restra int system withthe
seat beltonthef ront passeng erseat
(/ page60). Obser vethes pecif ic
ins truction sfor ther ear ward-faci ng and
fo rw ard-f acin gchild restra int systems
(/ page60).
If th ef ront passeng erseat isoccupied,
ensur e,bo th bef orea nd dur ing thej our‐
ne y,that thes tatus ofthef ront
passeng erairbag iscor rect fort he cur‐
re nt situa tion(/pa ge45). Occupa
ntsaf ety 51

R
Obser vethew arning labels inthev ehicle
int erior and onthec hild restra int system.
R Also secur eTop Tether ifpr esent .
No tesf or vehicl eswith areclining rear seat
When installing achild restra int system, move
th er eclini ngrear seat backres ttoa nalmos t
upr ight posit ion.The recli ning rear seat backres t
mus tbeinc ontact with thec hild restra int sys‐
te m. Obser vethen otes on thec ushionbag
(/ page40).
If yo ui nstallac hild restra int system onthe
re cli ning rear seat ,bes uret oo bser vethec hild
re stra int system manuf acturer'sinstallation
ins truct ions .
Do notm odify thec hild restra int system &
WARNIN GRisk ofinju rydue tomodif i‐
cations tothec hild restra int system
The child restra int system maynolong er
func tion asitis supposed toifyo um ake
mod ificat ionsorattac ho bject stoit,e.g. toys
or unsuit ableaccessor ies.This poses an
incr eased risk ofinjur y! Ne
verm odify thec hild restra int system. Only
att acha ccessor ieswhic hthe manuf acturer
of thec hild restra int system has author ized
especiall yfor this ch ild restra int system. Onl
yusechild restra int systems whicharein
pr oper working condit ion &
WARNIN GRisk ofinju ryor deat hcaused
by theu seofdamag edchild restra int
sy stems
Child restra int systems ortheir retainin gsys‐
te ms that have been subjec tedt oal oad in
an acc iden tmaythen notb ea ble toper form
th eir intended protect ivef unc tion .
The child can notb erestrained inthee vent of
an acci dent, hea vybraki ng oras udden
ch ang eofdirect ion. #
Alw aysr eplace child restra int systems
immediat elyt hat have been damag edor
in vo lved inan acciden t. #
Have thes ecur ingsystems fort he child
re stra int systems checkeda taq ualified spec
ialistworks hop beforei nstalling a
ch ild restra int system again. Av
oid direct sunli ght &
WARNIN GRisk ofburnsw hen thec hild
seat isex posed todirect sunlight
If th ec hild restra int system isex posed to
dir ect sunlight orheat, partscould heatup.
Childr encould sufferb urns from these parts,
par ticular lyon metallic partsof thec hild
re stra int system. #
Alw aysm akes uret hat thec hild
re stra int system isno te xpo sedt o
dir ect sunlight . #
Protect itwit hab lanket,for exam ple. #
Ifth ec hild restra int system has been
ex posed todirect sunlight ,allowi tto
cool befores ecu ring achild intoit. #
Neverlea ve childr enunat tende dint he
ve hicle. 52
Occupant safety

Ov
ervie wo fsuitable seatsinthev ehic lefori ns talling achild restra int system Secur
ingsystems forc hild restra int systems Ve
hicl eseat
Lef t/right rear seat
Prefer reds ecur ingsystem:
® LATC H-type (ISOFIX )child seat secur ingsys‐
te m
¯ AlsosecureT op Tether ifpr esent
(/ page57) Alt
ernati vesecur ingsystem:
R Vehicle seatbelt
Fr ont passeng erseat
Securing system:
R Vehicle seatbelt Be
suretoo bser ve:
R Ifth ef ront passeng erseat isoccupied, ensure,
bo th bef orea nd dur ing thej our ney,that thes ta‐
tus ofthef ront passeng erairbag iscor rect fort he
cur rent situa tion(/pa ge45) .
R Noteso na utomatic front passeng erairbag shut‐
of f(/ pag e44).
Cen terr ear seat
Securing system:
R Vehicle seatbelt
¯ Alsosecur eTop Tether 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 hifa
seat beltisunf astened whilet he vehicle
is in mo tion
If th es eat belt isreleased whilethev ehicle is
in mo tion, thec hild restra int system isno
long ercor rectl ys ecu red. The child seat
saf etyf eatur eisd eac tivated and thes eat
belt isdraw nina bitb ythe iner tiareel.
It is ther efor en otpossible toeng aget he seat
belt again. #
Pull overand stop thev ehicle safely as
soon aspossible, paying attention to
ro ad and trafficc ondi tions . #
Activatet he child seat safetyf eatur e
ag ain and correctl ys ecu rethec hild
re stra int system. When
enabled, thes pecial seatbelt retract or
ens ures that thes eat belts ofthef ront
passeng erseat andrear seat sdon otslac ken
once thec hild restra int system issecur ed. The
seat belts onthef ollo wing seats aree quip‐
ped withas pecialseatb eltretract or:
R Front passeng erseat
R Rear seat s #
Toins tall achild restra int system: when
ins talling achild restra int system, always
obser vethem anuf actur er'sinstallation and
opera tinginstruct ions aswellas thei nfor ma‐
tion inthis Oper ator's Manual. #
Pull thes eat belt smoo thly from thes eat belt
outle t. #
Engage thes eat belt tongu eint he seat belt
buc kle. #
Toactiv atet he spe cial seatbelt retract or:
pu llth es eat belt outfully andlett he iner tia
re el retract itag ain.
Wh enthes pecial seatbelt retract orisacti va‐
te d, yous hould hear aratc heting sound. #
Pus hthe child restra int system down until
th es eat belt sitstight ly. #
Todeac tivatet he spe cial seatbe ltre trac‐
to r:press ther elease buttonofthes eat belt
buc kle. #
Hold thes eat belt tongu eand guideb ackt o
th es eat belt outle t. Ins
talling theL ATCH -type (ISOFI X)child
re stra int system onther ear seat In
st allin gaL ATCH -type (ISOFI X)child
re stra int system onther ear seat &
WARNIN GRisk ofinju ryor deat hifthe
per missible gross mass ofthec hild and
ch ild restra int system isexc eeded
Fo rL ATCH -type (ISOFIX )child restra int sys‐
te ms inwhic hthe child issecur edusing the
int egr ated seat beltinthec hild restra int sys‐
te m, thep ermissible gross mass ofthec hild
and child restra int system is73 lb(33 kg).
If th ec hild and thec hild restra int system
to ge ther we igh mor ethan 73lb(33 kg),th e
LA TC H-type (ISOFIX )child restra int system
wit hintegr ated seat beltdoes noto ffer suf fi‐
cie ntprotect ion. Anexc essiv eload maybe
placed ontheL ATCH -type (ISOFIX )child seat
att achments andthec hild maynotbe Occ
upant safety 55

re
stra ined inthee vent ofan acci dent, for
ex am ple. #
Ifth ec hild and thec hild restra int sys‐
te mt ogether weigh mor ethan 73lb
(33 kg),us eo nlyaL ATCH -type (ISOFIX )
ch ild restra int system that sec ures the
ch ild withthe vehicle seatbelt. #
Also secur ethe child restra int system
wit hthe TopT ether belt, ifav ailable. Alw
aysc om plyw itht he information aboutthe
mass ofthec hild restra int system:
R Inthem anuf actur er'sinstallation andoper at‐
ing instruct ions fort he child restra int system
used
R Onalabel onthec hild restra int system, if
pr esent
Re gular lych eckt hat thep ermissible gross mass
of thec hild and child restra int system isstill
com plied with. When
installing achild restra int system, obser ve
th ef ollo wing:
0073 Alw
ayso bser vethec orrect useo fthe seats
and consider their suit ability fora ttac hing a
ch ild restra int system.
0073 Alw
aysc om ply withthe manuf acturer's
ins tallation andoper atinginstruct ions for
th ec hild restra int system used.
0073 Mak
esuret hat thec hild's feet do nottouc h
th ef ront seat. Ifneces sary,mo vethef ront
seat slightl yforwa rds.
® When installing aLATCH -type (ISOFIX )
ch ild restra int system, also obser vethef ollo w‐
ing:
0073 When
usingaGroup 0/0+ babycarseat
and aGroup Irear ward-faci ng child
re stra int system onarear seat:ad jus t
th ef ront seat sothat thes eat does not
to uc ht he child restra int system.
0073 When
usingaGroup Ifor wa rd-facin g
ch ild restra int system: remo vetheh ead
re stra int from ther espectiv eseat, ifpossi‐
ble. Inaddition, theb ackres to fthe child re
stra int system mus t,as fara sp ossi ble, lie
fl at agains tthe bac kres to fthe vehicle seat.
Af tert he child restra int system has been
re mo ved, replace theh ead restra int simme‐
diat elya nd adjus tthem correctl y.
0073 Fo
rc ertain child restra int systems inwe ight
gr oup IIor III,t her em aybe restrictions on
th em aximum sizesetting, e.g. due topossi‐
ble con tact with ther oof.
0073 The
child restra int system mus tnotbe put
under stra in be tween ther oof and thes eat
cushion and/orbeinstalled facing the
wr ong direct ion. Wher epossi ble, adjus tthe
seat cushion inclination accordingly.
0073 The
child restra int system mus tnotbe put
under stra in by theh ead restra int .A dju st
th eh ead restra int sa ccording ly. 56
Occupant safety