2020 MERCEDES-BENZ GLS SUV Owner's Manual

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. The
status ofthefront passeng erairbag isdis‐
pla yedaf te rth eself-t est:
R PASSENGER AIRBAGON light sup for
60 seconds ,sub sequently both indic ator
lam psareof f(P AS SENGER AIR BA GON and
OF F): thefront passeng erairbag isable to
deplo yin theev ent ofan acciden t.
R PASSENGER AIRBAGOF Flight sup con tinu‐
ousl y:thefront passeng erairbag isdisabled.
It will then notbe deplo yedin theeve ntofan
acci dent.
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 aut omat icfron tpasse nger airbag
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 hfrom
using are ar wa rd-faci ng child restra int
sy stem when thefront passeng erfront
airbag isenabled
If yo usec ureach ild inare ar wa rd-facin g
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 isdeactiv ated. The PASSENGER AIRBAG
OFF indicat orlam pmus tbe lit. Occupant
safety 47

NEVER
useare ar wa rd-faci ng child restra int
sy stem onaseat protect edbyan ENABLED
FR ONT AIRB AG infront ofit,DE ATHor SERI‐
OUS INJURYtotheCH ILD can occur . When
installing ach ild restra int system onthe
fr ont passeng ersea t,obse rveth eve hicle-spe‐
cif icinf ormation (/page64 ).
De pend ing on thech 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. &
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
and youposi tionth efront passeng erseat too
clos eto thecoc kpit, intheeve ntofan acci ‐
de nt, thech ild could:
R Come intocon tact with theve hicle inte‐
ri or ifth ePA SSENGER AIRBAGOF Find i‐
cat orlam pis lit,fo rex am ple.
R Bestru ck bytheair bag ifth e
PA SSENGER AIRBAGOF Find icat orlam p
is off. #
Alw aysmo vethefront passeng erseat
as farbac kas possi bleand fully retract
th eseat cushion lengthadjus tment.
Alw aysmak esur eth at theshoulder belt
st ra pis cor rectly routed from theseat
belt outle ton theve hicle totheshoul‐
der belt guide onthech ild restra int sys‐
te m. The shou lderbeltstra pmus tbe
ro uted forw ards and down wardsfrom
th eve hicle beltoutle t.Ifnecessar y, adjus
tth eseat beltoutle tand thefront
passeng erseat accor dingly. #
Alw aysobser vethech ild restra int sys‐
te m manuf acturer'sinstallation instruc‐
tion s. When
installing ach ild restra int system onthe
fr ont passeng ersea t,obse rveth eve hicle-spe‐
cif icinf ormation (/page64 ).
If aper son issit tin gon thefront 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 48
Occupan tsaf ety

wit
habuild corresponding tothat ofan adult
shoul dno 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 peit her light sup con tinuousl y
or remains off,depe nding onthere sult ofthe
cla ssificati on.
- 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 esy stem self-t est,
th efront passeng erair bag isdeactiv ated. It
will notbe deplo yedin theeve ntofan acci ‐
de nt. Inthis case, thefront passeng erair bag
cann otper form itsintended protect ive func ‐
tion ,e.g. when aper son isseat edinthefront
passeng erseat.
That person could, forex am ple, com eint o
con tact with theve hicle interior ,especially if
th eper son issitt 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 erair bag isenabl edor
dea ctivated inaccor dance withth eper‐
son inthefront passeng erseat. R
The person isseat edproper lywit hacor ‐
re ctly fastened seatbelt.
R The front passeng erseat hasbeen moved
as farbac kas possi ble. Be
sureto also obse rveth efo llo wing further
re lat ed subje cts:
R Child restra int system onthefront passeng er
seat (/page64 ). PRE-S
AFE®
sy stem PRE-
SAFE®
(ant icipa tory occupa ntprotec‐
tion) PRE-
SAFE®
is ab leto detect cer tain critic aldriv‐
ing situat ionsandimplemen tpr e-em ptive meas‐
ur es toprotect theve hicle occupants.
PRE-S AFE®
can implement thefo llo wing meas‐
ur es indepe ndently of eac hot her :
R Tight ening theseat belts onthedr iver's seat
and front passeng erseat.
R Closing theside windo ws. Occupant
safety 49

R
Vehicl eswith sliding sunroof:Clo sethe
sliding sunroof.
R Vehicl eswith memor yfuncti on:Movethe
fr ont passeng ersea tto amor efa vo rable
seat position .
R Vehicl eswith memor yfuncti oninthe
re ar passe nger comp artment :mo vethe
out errear seat sto amor efa vo rable seat
position .
R Vehicl eswith multico ntour seat :Incr ease
th eair pressur ein theseat sidebolsters of
th eseat backres t.
R PRE-S AFE®
Sound: prov ided that themulti‐
media system isswitc hedon,gener ates a
br iefnoi sesigna lto stimulat eth einnat epr o‐
te ctiv emec hanism ofaper son's hearing.
* NO
TEDama gecau sed byobject sin the
fo ot we llor behin dth eseat The
automatic adjustmentof theseat posi‐
tion mayre sult indamag eto theseat and/or
th eobjec t. #
Stow object sin asuit able place. Re
versing thePRE- SAFE®
sy stem mea sures If
an acc iden tdid notocc ur,th epr e-em ptive
measur esthat we retake nar ere ve rsed.
Yo uwill need toper form certainse ttings your‐
self . #
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
or
R when theve hicle istowing atrailer andther e
is arisk ofare ar impact
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 Fu
nction ofPRE-S AFE®
Im pulse Side If
an imminen tside impact isde tected, PRE-
SA FE®
Im pulse Side canpre-emp tively movethe 50
Occupant safety

fr
ont seatve hicle occupant's upperbody
to wa rdsth ecent eroftheve hicle. Itdoes this by
ra pidly inflating anair cushion intheout erseat
side bolsterof theseat backres ton theside on
whic hth eim pact isantic ipated.This increases
th edis tance betwee nth edoor andtheve hicle
occupant.
If PRE-S AFE®
Im pulse Sidehasbeen deployedor
is faulty ,th ePRE-S AFEImpulse SideInoper ative
See Operator 'sManual displaymessag eappear s
(/ page568). Saf
elytranspor tingchildr enintheve hicl e Alw
aysobser vewhen childr enaretrave ling
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
(/ page52).
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 .
Gener icterm "child restra int system"
The gener icterm child restra int system isused
in this Opera tor's Manua l.A ch 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 Oc
cupan tsaf ety 51

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 (/ page58).
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 seatbeltcanbe
ins talled proper lywit 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‐
sit edir ect ion 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 .
In par ticular ,th ech ild can notbe restra ined
in theev ent ofan acciden t,hea vybraking or
a sudden chang 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, e.g.cushi ons,
under orbehi ndthech ild restra int sys‐
te m. 52
Occupa ntsaf ety

#
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 hdue to
uns ecur edchild restra int systems inthe
ve hicle
If th ech ild restra int system isno tcor rectly
ins talled orsecur ed,itcould release, inpar‐
tic ular ,in theeve ntofan acci dent, sudd en
br aki ng orasu dd en 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:
- Installing theLA TC H-type (ISOFIX )ch ild
re stra int system onthere ar seat
(/ page58).
- Sec ureth ech ild restra int system withth e
seat beltonthere ar seat (/page63 ).
- Sec ureth ech ild restra int system withth e
seat beltonthefront passeng erseat
(/ page65). Obser vethespecif ic
ins truction sfo rth ere ar wa rd-faci ng and
fo rw ard-f acin gch ild restra int systems
(/ page64 ).
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 47).
R Obser vethewa rning labels intheve hicle
int erior and onthech ild restra int system.
R Also secur eTo pTe ther ifpr esent . No
tesfo rMe rcedes- Mayba chvehicl eswith a
re clining rear seat
When installing ach ild restra int system, move
th ere cli ning rear seat backres tto an almos t
upr ight posit ion.The recli ning rear seat backres t
mus tbe incon tact with thech ild restra int sys‐
te m. Obser vetheno teson thecushionbag
(/ page42).
If yo uins talla ch ild restra int system onthe
re cli ning rear seat ,be sur eto obser vethech ild
re stra int system manuf acturer'sinstallation
ins truct ions .
Do notmod ifythech 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 Occ
upant safety 53

of
thech ild restra int system has author ized
especially forth 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.
In par ticular ,th ech ild can notbe restra ined
in theev ent ofan acciden t,hea vybraking or
a sudden chang 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. 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. 54
Occupant safety