2020 MERCEDES-BENZ GLS SUV tow

Modif
iedEmer gency Tensi oni ng Device sma y
be deploy ed unint entionall yor notfunc tion
as intended. #
Nevermodify theseat belts, Emergency
Te nsi oni ng Device s,sea tbe ltanc ho‐
ra ge sor seat beltretract ors. #
Makesur eth at theseat belts areno t
damag ed,areno two rnand arecle an. #
Alw aysha ve theseat belts checked
immed iatelyaf te ran accide ntata
qu alif ied spec ialistwo rkshop. Onl
yuse seat belts that areappr ovedfo ryo ur
ve hicle byMer cedes-Ben z. &
WARNIN GRisk ofinju ryor deat hfrom
deplo yedpy rotech nic Emerg encyTen‐
si oni ng Device s
Py rotech nic Emerg encyTensi oni ng Device s
th at have been deployedar eno long eroper a‐
tion aland areunable toper form their inten‐
ded protect ive func tion. #
Ther efor e, have deplo yedpy rotech nic
Emerg encyTensi oni ng Device simm edi‐ at
ely replaced ataqu alif ied spec ialist
wo rkshop. Mer
cedes-Benz recomme ndsthat youha ve the
ve hicle towe dto aqu alif ied spec ialistwo rkshop
af te ran accide nt.
* NO
TEDama gecau sed bytrap ping the
seat belt If
an unused seatbeltisno tfully retract ed,it
ma ybe come trap pe din thedoor orinthe
seat mechanism. #
Alw aysensur eth at an unus edseat belt
is full yre tract ed. Fa
stening andadjust ing seat belts If
th eseat beltispulled quickl yor shar ply, the
seat beltretract orlock s. The seat beltstra pcan‐
no tbe pulled outanyfur ther. #
Alw ayseng ageseat belttongu e2 ofthe
seat beltintoseat beltbuckle1 ofthecor‐
re sponding seat. #
Press and hold theseat beltoutle tre lease
and slide seatbeltoutle t3 intoth edesir ed
position . #
Letgo oftheseat beltoutle tre lease and
ens ureth at seat beltoutlet3 locksinto
posit ion. 40
Occupant safety

R
The seat belttongu eis eng aged inthe
seat beltbuckleofthefront passeng er
seat andthefront passeng erseat is
unocc upied. #
Stow object sin asuit able place. #
Onlyone person should useeachseat
belt atanyone time. Depending
onthede tected acci dent situation,
th ewindo wcur tain airbag onthefront
passeng erside maydeplo y.The airbag is
deplo yedre ga rdless ofwhe ther thefront
passeng erseat isoccupied.
Inf ormat iononthecush ionbag inthere clin‐
ing rear seat
The cushi onbag offers addit ionalocc upant pro‐
te ction intheeve ntoffront alimpacts. When
acti vated, thecushionbag deploysund erthe
seat cushion. Thishelps preve nttheve hicle
occupant from slipping offth eseat cushion.
If yo uins talla ch ild restra int system onthe
re cli ning rear seat ,alw aysobser vetheadditional
no tes(/ page52). Pr
otection bytheair bags Dep
endingontheacciden tsituation ,an airbag
ma ysupplement thepr otect ion offere dby acor ‐
re ctly fastened seatbelt. &
WARNIN GRisk ofinju ryor deat hdue to
inc orrect sea tpos ition
If yo ude viat efrom thecor rect sea tpos ition,
th eairbag cannotper form itsintended pro‐
te ctiv efuncti onand deployme ntma yev en
cause further injur ies.
In order toavo idrisk s, eac hve hicle occupant
mus talw aysmak esur eof thefo llo wing:
R Fasten seat belts correctly .Pr egna nt
wo men mustta ke par ticular careto
ensur eth at thelap belt neverlie sacr oss
th eabdomen.
R Adoptth ecor rect sea tpos ition and keep
as faraw ay as poss iblefrom theairbags.
R Obser vethefo llo wing informatio n. #
Alw aysmak esur eth at ther ear eno
objec tsbetween theairbag andvehicle
occupant. To
avo idtherisk sre sulting from thedeplo yment
of an airbag, eachve hicle occupant must
obser vethefo llo wing informatio nin par ticular :
R Beforest ar tin gyo ur jour ne y,adjus tyo ur seat
co rrect ly;th edr iver's seat andfront
passeng erseat should bemo vedas farbac k
as possi ble.
When doingso,alwaysobser vetheinf orma‐
tion onthecor rect driver's seatpos ition
(/ page 101).
R Onlyhold thesteer ing wheel bythesteer ing
wheel rim. This allow sth eairbag tobe fully
deplo yed.
R Alw ayslean agains tth eseat backres twhen
th eve hicle isin mo tion. Donotlean forw ards
or agains tth edoor orside windo w.Youma y
ot her wise beinthedeplo yment area ofthe
airbag s.
R Alw ayske ep your feet on thefloor .Do not
put your feet on thecoc kpit, forex am ple. Oc
cupan tsaf ety 43

Con
sequen tly, theairbags cannotprotect
ve hicle occupants asthey aredesig nedto
do. #
Nevermodify thedoor sor par tsof the
door s. #
Alw aysha ve wo rkon thedoor sor door
paneling carried out ataqu alif ied spe‐
cialis two rkshop. &
WARNIN GRisk ofinju rydue todeplo yed
airbag
A deplo yedairbag nolong erhas apr otect ive
func tion andcann otprotect asintended in
th eev ent ofan acciden t. #
Have theve hicle towe dto aqu alif ied
spec ialistwo rkshop inorder tohave the
deplo yedairbag replaced. Ha
ve deplo yedairbags replaced immediat ely. St
atus ofthefront passeng erfront airbag Fu
nction oftheaut oma ticfront passeng er
air bag shutoff
The automatic front passeng erairbag shutoffis
able todetect whe ther thefront passeng erseat
is occupied byaper son orach ild restra int sys‐
te m. The front pass engerairb agisenabl edor
disa bled accor dingly.
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 51).
R Alw aysobser vethech ild restra int system
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 thesitt ing 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 front passeng erairbag
shut off.
This could result inthefront passeng erair‐
bag notfunc tioningasintended during an
acciden t. #
Donotplace anyobjec tsbetween the
sitting surface and thech ild restra int
sy stem. Occ
upant safety 45

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

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
re stra int system mus t,as faras possi ble,lie
fl at agains tth ebac kres tof theve hicle seat.
Af terth ech ild restra int system has been
re mo ved, replace thehead restra int simme‐
diat elyand adjus tth em correctly .
0073 When
using ach ild restra int system on
a seat ontheth ird ro w of sea ts:adj ust
th efront seat sothat itdoes notto uc hth e
ch ild restra int system and movetheseat
bac kres tof thefront seat intoan upr ight
position ifneces sary.
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 put
under stra in be tween thero of and theseat
cushion and/orbeinstalled facing the
wr ong direct ion. Wher eposs ible, adjus tth e
seat cushion inclination accordingly. 0073
The
child restra int system mus tno tbe put
under stra in by thehead restra int .Ad jus t
th ehead restra int sacc ording ly. #
Beforeev eryjour ney,mak esur eth at the
LA TC H-type (ISOFIX )ch ild restra int system is
eng aged inbo th mounting brac kets inthe
ve hicle.
* 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. Ve
hicl eswith individual rear seats: 1
LATC H-type (ISOFIX )mou nting brac ket #
Remo veand stow away covers 1 ofthe
mounting brac kets intheve hicle. #
Attach theLA TC H-type (ISOFIX )ch ild
re stra int system toboth mounting brac kets
in theve hicle. 60
Occupant safety

#
Toactiv ate: press and hold button2 for
appr oximat elyfive seconds untilanacous tic
signal sounds. #
Todeac tivate: press and holdbu tton 1 for
appr oximat elyfive seconds untilanacous tic
signal sounds. In
thefo llo wing situat ions,th er eis adang erof
being lockedout when thefunc tion isactiv ated:
R While theve hicle isbeing tow star ted/
pushed.
R Ifth eve hicle isbeing tested on aro ller dyna‐
mome ter. Po
we rcl os ingfun ction If
yo upush thedoor intoth eloc kto thefirs t
de tent positio n,thepo we rclosi ngfunction will
au tomatical lypul lth edoor intoth eloc k. Loc
king/u nlocking thedr iver' sdoor withth e
emer gency key %
Ifyo uwish toloc kth eve hicle entirelyusing
th eemer gency key,firs tpr es sth ebutt onfor
loc kin gfrom theinside whilethedr iver's
door isopen. Thenproceed toloc kth edr iv‐
er's door using theemer gency key. #
Inser tth eemer gency keyas faras itwil lgo
int oopening 1intheco ver. #
Pull and hold thedoor handle. #
Pull theco veron theemer gency keyas
st ra ight aspossible away from theve hicle
until itre leases. #
Release thedoor handle. Openin
gand closing 77

(3
m) away from theve hicle insuc hsit‐
uations. When
making thekic king movement, makesur e
th at your feet arefirm lyon thegr ound, other‐
wise youco uld lose your balan ce,e.g.on ice.
Obs erve thefo llo wing notes:
R The Smar tKey isbehin dth eve hicle.
R Stand atleas t12 in(30 cm) away from the
ve hicle while perform ing thekic king move‐
ment.
R Donotcome intocont actwithth ebum per
while making thekic king movement.
R Donotcar ryout thekic king movement too
slo wly.
R The kicking movement mustbe towa rdsth e
ve hicle andbackag ain. 1
Detection rang eof thesensor s
If se veralcon secut ive kic kin gmo vements are
no tsuccessfu l,wa itte nseco nds.
Sy stem limit s
The system maybe impair edorma yno tfunc tion
in thefo llo wing cases :
R The area around thesensor isdir ty,e.g. due
to road salt orsnow .
R The kicking movement ismade using apr os‐
th etic leg. The
tailg atecan open orclos eunin tentio nallyin
th efo llo wing situat ions:
R Ifaper son 'sarms orlegs aremo vingin the
sensor detection rang e, e.g .wh en polishi ng
th eve hicle orpic king upobjects .
R Ifobject sar emo vedor placed behind the
ve hicle, e.g.tensi oni ng stra ps orlugg age.
R Ifclam ping stra ps, tarp sor other coverings
ar epu lled ove rth ebum per.
R Ifapr otect ive mat withalengt hre ac hin g
ov er thetrunk silldown intoth ede tection
ra ng eof thesensor sis used.
R Ifth epr otect ive mat isno tsecur edcor rectly .
R Whe nwo rking onthetra iler hitch,tra iler sor
re ar bicy clerack s.
Deactiv ateth eSmar tKey functions (/page70)
or do notcar rytheSmar tKey about your per son
in suc hsit uatio ns. Open
ingand closing 83

Indicat
orlam p1 flashes whentheAT Asy stem
is armed.
The ATAsy stem isdeactiv ated aut omaticall yin
th efo llo wing situat ions:
R Afterunloc kingtheve hicle withth eSmar t‐
Ke y R
Afterunloc kingtheve hicle using KEYLES S-
GO
R Afterpr essing thest ar t/ stop butt onwithth e
Smar tKey inthestow agecom partment
(/ page18 2)
% WhentheMer cedes‑ Benzemergency call
sy stem isactiv eand thealar mstay son for
mor eth an 30 sec onds, ames sageis aut o‐
mat icall ysen tto theCus tomer Assis tance
Ce nter (/ page 447).
% Inthecase ofsevere batt erydisc harging,
th eanti- theftalar msystem isaut omaticall y
deactiv ated tofacil itat eth ene xt engine
st ar t.
Deact ivat ing theATA #
Press theÜ, ßor008B buttononthe
Smar tKey .
or #
Press thest ar t/ stop butt onwithth eSmar t‐
Ke yin themar kedspace (/page18 2) Dea
ctivat ingth eala rm using KEYLESS-GO #
Grasp theoutside doorhandle withth e
Smar tKey outside theve hicle. Fu
nction oftheto w- aw ay alar m %
This function mayno tbe available inall
coun tries.
An audible andvisual alarmistrigg ered ifan
alt eratio nto your vehicle's angleof inclination is
de tected whi letheto w- aw ay alar misarmed.
The tow- aw ay alar misaut omat icallyar med afte r
appr oximat ely60 seco nds:
R Afterloc king theve hicle withth eSmar tKey
R Afterloc king theve hicle using KEYLES S-GO
The tow- aw ay alar mison lyarmed when thefo l‐
lo wing compone ntsar eclos ed:
R The door s
R The tailg ate 98
Openingand closing