2020 MERCEDES-BENZ GT R ROADSTER Owner's Manual

Re
stra int system Pr
otection bythere stra int system The
restra int system includes thefo llo wing com‐
pone nts:
R Seat beltsystem
R Airbags
R Child restra int system
The restra int system can help prev ent theve hi‐
cle occupants from coming intocont actwith
par tsof theve hicle interior intheeve ntofan
acci dent. Intheeve ntofan acci dent, the
re stra int system can also reduce thefo rc es to
whic hth eve hicle occupants aresubject ed.
A seat beltcanonlypr ov ide thebes tle ve lof pro‐
te ction ifit is wo rncor rectly .Depe nding onthe
de tected acci dent situation, Emer gency Tensi on‐
ing Device sand /or airba gssupp lement thepr o‐
te ction offere dby acor rectly wornseat belt.
Emer gency Tensi oni ng Device sand /or airba gs
ar eno tde ploy ed ineve ryacc iden t. In
order forth ere stra int system toprov ide the
int ended leve lof protect ion, eachve hicle occu‐
pant mustobser vethefo llo wing informatio n:
R Fasten seat belts correctly .
R Sitinan almos tup right seat position with
th eir bac kag ains tth eseat backres t.
R Sitwithth eir feet resting onthefloor ,if pos‐
sible.
R Alw ayssecur eper sons under 5ft (1.50 m)
ta llin an addition alrestra int system suitable
fo rMer cedes-Benz vehicles.
Ho we ver,no system available toda ycan com‐
ple tely eliminat einjur iesand fata lities inevery
acciden tsituation .In par ticular ,th eseat belt
and airbag gener ally do notpr otect agains t
objec tspene trating theve hicle from theoutside.
It is also notpossible tocom plet elyru le out the
ri sk ofinjur ycaused bytheairbag deploying. Re
duce dre stra int system protection &
WARNIN GRisk ofinju ryor deat hfrom
modif ications tothere stra int system
The restra int system can nolong erfunc tion
cor rectly afte ralt erations have been made.
The restra int system mayth en notpr otect
th eve hicle occupants asintended byfailing
in an acc ident ortrigg ering une xpec tedly ,fo r
ex am ple #
Neveralt er thepar tsof there stra int
sy stem. #
Neverta mp erwit hth ewir ing orany
electr oniccomponen tpar tsor their
sof tware. If
it is neces saryto modify theve hicle toacc om‐
modat eaper son withdisabil ities, con tact an
au thor ized Mercedes-B enzCent erforde tails.
US Aonl y:forde tails, con tact ourCu stomer
Assis tance Center on 1-800-F OR-MER Cedes
(1‑80 0‑367‑63 72). Occ
upant safety 31

Re
stra int system functiona lity When
theignition isswitc hedon,aself-t estis
per form ed, during whic hth e0075 restra int sys‐
te m wa rning lam plight sup. Itgoes outnolater
th an afe w sec ond saf te rth eve hicle isstar ted.
The com ponen tsof there stra int system areth en
func tional. Malfu
nctioning restra int system A
malfun ction has occurredin there stra int sys‐
te m if:
R The 0075 restra int system warning lam p
does notlight upwhen theignition is
switc hedon
R The 0075 restra int system warning lam p
light sup con tinuousl yor repeat edly during a
jour ney &
WARNIN GRisk ofinju rydue tomalfu nc‐
tions inthere stra int system
If th ere stra int system ismalfunct ioning,
re stra int system com ponen tsma ybe trig‐ ge
redunint entionall yor ma yno tdeplo yas
int ended during anacciden t.This mayaf fect
th eEmer gency Tensi oni ng Device sor air‐
ba gs, forex am ple. #
Have there stra int system checkedand
re pair edimmediat elyat aqu alif ied spe‐
cialis two rkshop. Fu
nction ofthere stra int system inan acci‐
dent Ho
wthere stra int system worksis de term ined by
th ese verity of theim pact detected and thetype
of acciden tantic ipated:
R Front alim pact
R Rear impact
R Sideim pact
R Rollover
The activ ation thre sholds forth ecom ponen tsof
th ere stra int system arede term ined based on
th eev aluatio nof thesensor values measur edat
va rious points intheve hicle. Thisprocess ispre-
em ptive in nat ure. The trigg ering/ deplo yment ofth
ecom ponen tsof there stra int system mus t
ta ke place ingood timeatthest ar tof thecolli‐
sion.
Fa ctor swhi chcan only besee nand measured
af te ra colli sion hasoccur reddo notpla ya deci‐
siv ero le in thedeplo yment ofan airbag. Nordo
th ey prov ide anindic ation ofairbag deployment .
The vehicle maybe def ormed signif icantl ywit h‐
out anairbag beingdeployed. This isthecase if
onl ypar tswhic har ere lativ elyeasil ydef ormed
ar eaf fect ed and thera te ofvehicle deceler ation
is no thigh. Conversely ,an airbag maybe
deplo yedev en though theve hicle suffers onl y
minor deformation. Ifve ry rigid vehicle parts
suc has longitudinal membersar ehit, forex am‐
ple, this ma yre sult insuf ficie ntly highleve ls of
ve hicle deceler ation. 32
Occupant safety

The
comp onent sof there stra int system can
be act ivat ed ordep loye dinde pendently of
eac hot her : Com
pone nt Detected dep loy‐
men tsit uation
Em erge ncy Tensi on‐
ing Device s Fr
ont alim pact, rear
im pact ,side impact ,
ro llo ver
Dr iver' sai rba g,front
pa sse nger airba g Fr
ont alim pact Knee
airbag Front alim pact Side
airbag Sideimpact
Head airbag Sideimpact, rollo ver,
fr ont alim pact The
front passeng erairb agcan onlybe depl oyed
in an acciden tif th ePA SSENGER AIRBAGOF F
ind icat orlam pis off.Ifth efront passeng erseat
is occupied, makesur e,bo th bef oreand during
th ejour ney,that thest atus ofthefront
passeng erairbag iscor rect (/ page 43). &
WARNIN GRisk ofburnsfrom hotair bag
com ponents
The airbag partsareho taf te ran air bag has
been deployed. #
Donotto uc hth eair bag parts. #
Have adeplo yedair bag replaced ata
qu alif ied spec ialistwo rkshop assoon
as possible . Mer
cedes-Benz recomme ndsthat youha ve the
ve hicle towe dto aqu alif ied spec ialistwo rkshop
af te ran accide nt.Take this int oacc ount ,par tic‐
ular lyifan Em erge ncy Tensi oni ng Device istrig ‐
ge redor an airbag deployed.
If th eEmer gency Tensi oni ng Device sar etrig ‐
ge redor an airbag isdeplo yed, youwill hear a
ban g,and asmal lamoun tof powder mayalso be
re leased:
R The bang willnotge ner ally affect your hear ‐
ing .
R Ingener al,th epo wder released isno thaz‐
ar dous tohealt hbut maycause short-term br
eat hing difficul ties toper sons suffering
fr om asthma orother pulmonar yconditions .
Pr ov ided itis saf eto do so, leavetheve hicle
immediat elyoropen thewindo win order to
pr eve ntbrea thing difficul ties .
Airb agsand pyrotech nic Emerg encyTensi oni ng
De vice scont ain pe rchlor atemat erial, whic hma y
re qu ire spec ialhandlin gor environm entalpro‐
te ction measures. Na tional guideline sre ga rding
wa ste disposal mustbe obser ved. InCalif ornia,
see http:// www .dtsc. ca.go v/Hazar dousW aste/
Pe rchlor ate/inde x.cfm. Seat
belts Pr
otection prov ided bytheseat belt Alw
aysfa sten your seat beltcorrect lybef ore
st ar tin gajo ur ne y.Asea tbe ltcan only prov ide
th ebes tle ve lof protect ion ifit is wo rncor rectl y. Occupant
safety 33

&
WARNIN GRisk ofinju ryor deat hdue to
inc orrectl yfa stened seatbelt
If th eseat beltisno two rncor rectly ,it can‐
no tper form itsintended protect ive func tion.
In addition, anincor rectly fastened seatbelt
can also cause injuries,forex am ple, inthe
ev ent ofan acciden tor when braking or
ch ang ingdirect ion sudden ly. #
Alw aysensur eth at all vehicle occu‐
pants have their seat belts fastened
cor rectl yand aresitti ngprope rly. Alw
aysobser vetheins truction sabout thecor‐
re ct driver's seatpos ition and adjus ting the
seats (/page77 ).
In order forth ecor rectly wornseat belttopro‐
vide theint ended leve lof protect ion, eachve hi‐
cle occupant mustobser vethefo llo wing infor‐
matio n:
R The seat beltmustno tbe twis tedand must
fi t tig htly and snuglyacr oss thebody . R
The seat beltmustbe routed acr oss thecen‐
te rof theshoulder andaslow do wn across
th ehips aspossible.
R The shoulder sectionoftheseat beltshould
no tto uc hyo ur neck nor berouted und er
yo ur arm or behin dyo ur bac k.
R Avoid wearing bulk yclo thing, e.g. awint er
coat .
R Push thelap belt down asfaras possi ble
acr oss your hips andpulltight wit hth eshoul‐
der sect ionofthebelt. Neverro uteth elap
belt across your abdom en.
Pr egn ant women mustals ota ke par ticular
car ewit hth is.
R Neverro uteth eseat beltacross shar p,poin‐
te d, abr asiv eor fragile objec ts.
R Onlyone person mayuse eachseat beltat
an yone time. Infants andchildr enmus t
ne vertr ave lsitt ing onthelap ofave hicle
occupant.
R Neversecur eobjects withaseat beltifth e
seat beltisbeing usedbyone oftheve hi‐
cle's occupants. Alwaysobser vetheins truc‐ tion
sfo rloa ding theve hicle when securing
object s,lugg ageor loads (/page88).
Also ensur eth at no obj ect s,e.g .a cus hion ,
ar eeve rpla ced between aper son and the
seat.
The co-dr iver seat beltiseq uippe dwit haspecial
seatbelt retract or.
Ac tivateor deacti vate thespecial seatbelt
re tract oroftheseat belt(/page50).
If ch ildr enaretrav eling intheve hicle, besur eto
obser vetheins truction sand safetyno teson
"Chi ldren intheve hicle" (/page47 ). Re
duce dse at beltpr otection &
WARNIN GRisk ofinju ryor deat hdue to
inc orrect sea tpos ition
The seatbel tdoe sno tof ferth eint ended
le ve lof protect ion ifyo uha ve notmo vedth e
seat backres tto an almos tve rtical posit ion.
When brakin gor intheeve ntofan acci dent,
yo uco uld slide underne athth eseat beltand 34
Occupant safety

sus
tain abdomin alor nec kinj uries, forex am‐
ple. #
Adjus tth eseat proper lybef orebegin‐
ning your jour ne y. #
Alw aysensur eth at theseat backres tis
in an almos tve rtical posit ionand that
th eshoulder sectionofyour seat beltis
ro uted acr oss thecent erofyour sho ul‐
der . &
WARNIN GRisk ofinju ryor deat hwhen
additional restra int systems areno tused
fo rper sons withasmal lerbuild
Pe rsons under 5ft (1.50 m)tallcan notwe ar
th eseat beltcorrectly without asuit able
additional restra int system.
If th eseat beltisno two rncor rectly ,it can‐
no tper form itsintended protect ive func tion.
In addition, anincor rectly fastened seatbelt
can also cause injuries,forex am ple, inthe
ev ent ofan acciden tor when braking or
ch ang ingdirect ion sudden ly. #
Alw ayssecur eper sons under 5ft
(1 .50 m)tallin asuit able restra int sys‐
te m. &
WARNIN GRisk ofinju ryor deat hdue to
damag edormodif iedseat belts
Seat belts cannotprov ide protect ion inthe
fo llo wing situat ions:
R The seat beltisdamag ed,has been modi‐
fi ed, isex treme lydirty, bleac hedordyed
R The seat beltbuckleisdamag edor
ex treme lydir ty
R Modif ication sha ve been made tothe
Emerg encyTensi oni ng Device ,sea tbe lt
anc horageor sea tbe ltre tract or
Sea tbe lts ma ysu stain non-visi ble damag ein
an acc iden t,e.g .due toglass splin ters.
Modif iedordamag edseat belts could tear or
fa ilin theev ent ofan acciden t,forex am ple.
Modif iedEmerge ncy Tensi oni ng Device sma y
be deploy ed unint entionally ornotfunc 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 whichha ve been approved
fo ryo ur vehicle byMer cedes-Ben z.
Ve hicl eswith AMG Perfor ma nce seat s
The AMG Perfor mance seatisdesigned forth e
st andar dth re e-point seatbelt. Ifyo uins talla dif‐
fe re nt mu ltipo int sea tbe lt, e.g .spo rtor racing
sea tbel ts, there stra int system cann otprov ide
th eint ended leve lof protect ion. &
WARNIN GRisk ofinju ryor fata linj ury
due tomodif iedseat beltsystems
If yo ufe ed seat belts thro ugh theopening in
th eseat backres t,th eseat backres tma ybe
damag edorma yeve nbr ea kin theeve ntof
an acci dent. Occu
pant safety 35

#
Onlyuse thest andar dth re e-point seat
belt. #
Nevermodify theseat beltsystem. All
vehicl es &
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 seatbelts 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.
Ve hicl eswith automatic front passen gerair‐
bag shutoff: 36
Occupant safety

*
NO
TEDep loym ent oftheEmer gency
Te nsi oni ng Device andside airba gwh en
th efront passeng erseat isunocc upied If
th eseat belttongu eis eng aged intheseat
belt buckleoftheunocc upied front
passeng erseat, theEmer gency Tensi oni ng
De vice andtheside airbag mayalso deplo y
in theev ent ofan acciden talong withot her
sy stems. #
Onlyone person should useeachseat
belt atanyone time. Ve
hicl eswithout automatic front passen ger
airb agshu toff:
* NO
TEDep loym ent oftheEmer gency
Te nsi oni ng Device when thefront -
passeng erseat isunocc upied If
th eseat belttongu eis eng aged intheseat
belt buckleoftheunocc upied front -
passeng erseat, theEmer gency Tensi oni ng
De vice mayal so deploy intheev ent ofan
acciden talong withot her systems. #
Onlyone person should useeachseat
belt atanyone time. Seat
beltadjustm ent function Ve
hicl eswith PRE-S AFE®
:If th eseat beltisno t
pulled tightlyacr oss your body ,th eseat belt
adjus tmentma yaut omaticall yapply acer tain
tigh tening forc e. Do nothold theseat belttight ly
while itis adjus ting.
Yo ucan activat eand deac tivateth eseat belt
adjus tmentfunc tion using themultimedia sys‐
te m (/ page37 ). Re
leasing seatbelts #
Press there lease buttonintheseat belt
buc kleand guide theseat beltbackwit hth e
seat belttongu e. Ac
tiv atin g/deac tivatin gse at beltadjus tment
vi athe multi mediasy stem Multi
media system:
4 Vehicle 5
î Vehicle Setting s
5 Belt Adjustmen t #
Activate0073 ordeacti vate 0053 thefunc tion. Seat
beltwarning funct ionforthe driver and
fr on tpass enger The
00E9 seatbeltwarning lam pin theIns tru‐
ment Displa yis are minder that all vehicle occu‐
pants mustwe artheir seat belts correctly .
The 00E9 seatbel twa rning lam plight sup forsix
seconds everytim eth eve hicle isstar ted.
In addition, awa rning tone maysou nd.
Whe nth edr iver's andfront passeng er'sdoor s
ar eclosed andthedr iver and front passeng er
ha ve fastened their seat belts, theseat belt
wa rning goes out. Occ
upant safety 37

In
thefo llo wing cases ,th eseat beltwarning
light sup dur ing ajour neyif:
R The vehicle speed exceeds 15mp h
(25 km/ h)and thedr iver's orfront
passeng erseat beltisno tfa stened.
R The driver or front passeng erunf astens their
seat beltwhile theve hicle isin mo tion. Airbags
Ov
ervie wof airbags 1
Driver's airbag
2 Front passeng erknee airbag 3
Front passeng erairbag
4 Head airbag
5 Side airbag
6 Driver's knee bag
The installation locationofan airbag canberec‐
ogni zedbytheAIRB AGmar king.
When enabled,anairb agcan prov ide addition al
pr otect ion forth ere spectiv eve hicle occupant.
Pot entia lpr otection from eachair bag: AIRB
AG Potentia lpr otection for:
Kn ee airb ag Thigh, knee and lowe rleg
Dr iver's airbag,
fr ont pass enger
airb ag Head
andribcag e
Head airbag Head
Side airbag Ribcage &
WARNIN GRisk ofinju ryor fata linj uries
if th efront -passen gerairb agisenabl ed
If th efront -passen gerfr ont airbagisenabl ed,
a ch ild on thefront -passen gerseat maybe
st ru ck bythefront -passen gerairb agdur ing
an accide nt.
NEVER useare ar wa rd-faci ng child restra int
sy stem onaseat withan ENABL EDFRONT
AIRB AG,DE ATHor SERIOU SINJU RYtothe
CH ILD can occur . When
installing ach ild restra int system onthe
fr ont passeng ersea t,obse rveth eve hicle-spe‐
cif icinf ormation (/page51 ).Also, always
obser vetheno teson rear wa rd-faci ng or
fo rw ard-f acin gch ild restra int systems onthe
fr ont passeng ersea t.
Ve hicl eswith automatic front passen gerair‐
bag shutoff:
The front passe nger airba gcan only bedeploy ed
in an acciden tif th ePA SSENGER AIRBAGOF F
ind icat orlam pis off.Ifth efront passeng erseat
is occupied, makesur e,bo th bef oreand during 38
Occupant safety