2021 MERCEDES-BENZ GT COUPE lock

R
freq uent operation inmount ainouste rrain or
on poor road sur faces
R whe nth eengine isoftenleft idling forlong
per iods
R oper ation inpar ticula rly dus tycond ition s
and /orif air -rec ircula tion mod eis freq uen tly
used
In these orsimilar operating conditions ,ha ve the
int erior airfilt er ,engin eair clean er,engin eoil
and oilfilt er etc. chang edmor efreq uent ly.The
tir es mus tbe checkedmor efreq uentl yif th e
ve hicle isoper ated under increased loads. Fur‐
th er information canbeobt ained ataqu alif ied
spec ialistwo rkshop. Batt
erydisconne ctionperiods The
ASSYSTPL US service interva ldisp lay
can onlycalculat eth eser vice dueda te when
th ebat tery isconnect ed. #
Notedown theser vice duedatedispla yedon
th eins trument displaybef orediscon necting
th ebatt ery(/ page26 1). Engine
compartment Opening/closing
thehood &
WARNIN GRisk ofacci dent dueto driv‐
ing withth ehood unlocked
The hood mayopen andblockyo ur vie w. #
Neverre lease thehood when driving. #
Beforeev erytrip, ensur eth at thehood
is loc ked. &
WARNIN GRisk ofacci dent andinjury
when openingand closingthehood
The hood maysuddenl ydr op intoth eend
position .
Ther eis arisk ofinjur yfo ran yone inthe
hood's rang eof mo vement. #
Open orclose thehood onlywhen ther e
is nobody inthehood's rang eof mo ve‐
ment. &
WARNIN GDang erofburnswhen open‐
ing thehood
If yo uopen thehood when theengine has
ove rheat edordur ing afire intheengine
com partmen t,yo uco uld come intoco ntact
wit hho tga ses orother escaping operating
fl uids. #
Beforeopen ingthehood, allowthe
engine tocool down. #
Intheeve ntofafire intheengine com‐
par tmen t,ke ep thehood closed and
call thefire ser vice. &
WARNIN GRisk ofinju rydue tomo ving
par ts
Com ponents intheengine compartmen tma y
con tinue running orstar tup sudden ly,ev en if
th eignition isswitc hedoff.
Mak esur eof thefo llo wing beforeper form ing
ta sk sin theengine compartmen t: #
Swi tchth eignition off. 262
Maintenanc eand care

To
w star ting ortowing away Pe
rm itted towing methods *
NO
TEDama gefrom automatic braking If
one ofthefo llo wing functionsis switc hed
on, theve hicle brak es aut omatically incer‐
ta in situat ions:
R ActiveBr ak eAssi st
R ActiveDis tance AssistDIS TRONI C
R HOLD functio n
R ActivePa rking Assist
To avo iddamag eto theve hicle, deactiv ate
th ese systems inthefo llo wing orsimilar sit‐
uation s: #
Dur ing towing #
Inacar wash Mer
cedes-Benz recomme ndstransp orting your
ve hicle inthecase ofabr eakdo wn,rath er than
to wing itaw ay. Fo
rto wing, useato w rope ortow bar withbo th
axle son thegr ound. Donotuse tow bar sys‐
te ms. &
WARNIN GRisk ofacci dent whento wing
wit hsteer ing wheel lock
Yo uwill nolongerbe ableto steer theve hicle
if th esteer ing wheel lockis eng aged. #
Alw aysswitc hon theignition whentow‐
ing theve hicle withato w cable orato w
bar . *
NO
TEDama getotheve hicle duetotow‐
ing away inc orrectl y #
Obs erve theins truction sand noteson
to wing away. Pe
rm itted towing methods
Bo th axle son
th egr ound Ye
s,maximum 31mile s
(50 km) at31 mp h(5 0km/h)
Fr ont axle
ra ised No
Re ar axle
ra ised No To
wing theve hicl ewith both axle son the
gr ound #
Obser vetheno teson theper mitt edtowing
me thods (/page286). #
Mak esur eth at thebatt eryis con nect edand
ch arge d.
Obser vethefo llo wing pointswhen thebatt eryis
disc harged:
R The engin ecann otbe star ted
R The electr icpar king brak ecann otbe
re leased orapplied 286
Breakdo wnassis tance

R
Vehicl eswith automatic transmiss ion:
The automatic transmiss ioncanno tbe shif‐
te dto position 005Cor005D
% Vehicl eswith automatic transmiss ion:If
th eaut omatic transmiss ioncann otbe shif‐
te dto position 005C,orthemultifunc tiondis‐
pla yin theins trument clusterdoes notsho w
an ything, have theve hicle transpor tedaw ay
( / pag e288). Atowing vehicle withlifting
eq uipment isrequ ired forve hicle transpor ta‐
tio n.
* NO
TEDama gedue totowing away at
exc essiv elyhigh speeds orove rlong dis‐
ta nces The
drivet ra in could bedamag edwhen tow‐
ing atexc essiv elyhigh speeds orover long
dis tances. #
Atowing speed of30 mph(50 km/h)
mus tno tbe exc eeded. #
Atowing distan ceof30 miles(50 km)
mus tno tbe exc eeded. &
WARNIN GRisk ofacci dent whento wing
a ve hicle whichis toohea vy
If ano ther vehicle istow- star tedor towe d
aw ay,its weight mustno texc eed theper mis‐
sible gross mass ofyour ow nve hicle, other‐
wise thefo llo wing could occur:
R The towing eyema ybecome detach ed.
R The vehicle/tr ailercombination may
sw erve oreve nro llo ver. #
Ifano ther vehicle istow- star tedor
to we daw ay,its weight mustno texc eed
th eper missible gross mass ofyour ow n
ve hicle. If
ave hicle mustbe tow- star tedor towe daw ay,
its per missib legross weight mustno texc eed the
per missible gross weight oftheto wing vehicle. #
Information ontheper missible gross mass of
th eve hicle canbefound ontheve hicle iden‐
tif ication plate(/ page322). #
Vehicl eswith automatic transmiss ion:Do
no topen thedr iver's door orfront passeng er door
,ot her wise theaut omatic transmiss ion
aut omaticall yshif tsto position 005D. #
Installth eto wing eye(/ page289). #
Fasten theto w bar .
* NO
TEDama gedue toinc orrect connec‐
tion oftheto w bar #
Onlyconnect theto w rope ortow bar to
th eto wing eyes. #
Deact ivat eth eaut omatic locking mechanism
(/ page55). #
Donotactiv ateth eHOLD function. #
Deact ivat eAc tiveBr ak eAssi st
( / pag e12 6). #
Vehicl eswith automatic transmiss ion:
Shif tth eaut omatic transmiss iontoposition
005C. #
Release theelectr icpar king brak e. Br
eakdo wnassis tance 28
7

&
WARNIN GRisk ofacci dent dueto limi‐
te dsaf ety-re lat ed func tionsdur ing the
to wing proce ss
Saf ety-re lat ed func tionsar elimit edorno lon‐
ge rav ailable inthefo llo wing situat ions:
R The ignit ionisswitc hedoff.
R The brak esy stem orpowe rst eer ing sys‐
te m ismalfu nctioning.
R The ener gysupp lyor theon- boar delectr i‐
cal system ismalfunct ioning.
When your vehicle isthen towe daw ay,signif ‐
icant lymor eef fort ma ybe requ ired tosteer
and brak eth an isno rm allyre qu ired. #
Use ato w bar . #
Mak esur eth at thesteer ing wheel can
mo vefreely beforeto wing theve hicle
aw ay. *
NO
TEDama gedue toexcess ive tracti ve
po we r If
yo upull away shar ply, thetractiv epo we r
ma ybe toohigh andtheve hicles couldbe
damag ed. #
Pull away slo wlyand smoo thly. Lo
adi ng the vehicl efo rtr ans port #
Obser vetheno teson towing away
( / pag e286). #
Connec tth eto w bar totheto wing eyein
or der toload theve hicle. #
Shif tth eaut omatic transmiss iontoposition
005C.
% The automatic transmis sionmaybe locked
in posit ion005Dintheeve ntofdama getothe
electr ics.Toshif tto 005C ,pr ov ide theon-
boar delectr icalsystem withpo we r
( / pag e28 4). #
Load theve hicle ontoth etra nspor ter. #
Shif tth eaut omatic transmiss iontoposition
005D. #
Use theelectr icpar king brak eto secur eth e
ve hicle agains tro lling away. #
Onlysecur eth eve hicle bythewheels. #
Mak esur eth at thefront and rear axle scom e
to rest on thesame transpor tatio nve hicle.
* NO
TEDama getothedr ivet ra in due to
inc orrect pos itioning #
Donotpos ition theve hicle abovethe
connecti onpointofthetranspor tve hi‐
cle. 288
Breakdo wnassis tance

#
Obser vetheins truction sin the
Mer cedes-Ben zSpecif ications forOper‐
ating Fluids310.1. Ha
ve thecoolant regular lyreplaced ataqu alif ied
spec ialistwo rkshop.
The propor tionofcor rosion inhibit or/antifr eeze
concen trat ein theengine cooling system should
be:
R Aminimum of50% (antifr eezeprotect ion
do wn toappr oximat ely-3 5°F (-37°C))
R Amaxim umof55% (antifreeze protect ion
do wn to-49°F (-45°C))
Co olant capacity Mode
lC apacity
Mer cedes -AMG GT 13.5 US qt
(1 2.8 lite rs)
Mer cedes- AMGGTC1 4.6USqt
(1 3.8 liter s) No
teson windshield washer fluid Obser
vetheno teson oper ating fluids
(/ page32 4). &
WARNIN G‑Ri sk offire and injuryfrom
wind shieldwa sher concen trat e
Wi ndsh ield wa sher concen trat eis highly
fl ammab le.Itcoul dign ite if it com esinto
con tact with hotengine component partsor
th eex haus tsy stem. #
Mak esur eth at no wind shieldwa sher
concen trat espills outnext to thefiller
open ing. *
NO
TEDama getotheex terior lighting
due touns uitable windshieldwa sher fluid Uns
uitable windshieldwa sher fluid maydam‐
ag eth eplas ticsur face oftheex terior light‐
ing. #
Onlyuse windshield washer fluid whic h
is also suitable foruse onplastic sur fa‐
ces, e.g.MBSumm erFitor MB Winter‐
Fit. *
NO
TEBlocked spr aynozzl escau sed by
mixing windshieldwa sher fluids #
Donotmix MBSum merFitand MBWin‐
te rFit withot her windshield washer flu‐
ids. Do
notuse distilled orde- ionizedwa teras thefill
le ve lsen sor maybe trigg ered erro neou sly.
Re comme ndedwindsh ield wa sher fluid:
R Abo vefreezing point:e.g. MBSummerFi t
R Belo wfreezing point:e.g. MBWinterFi t
Fo rth ecor rect mixi ngratio ,re ferto theinf orma‐
tion ontheantif reeze container .
Mix thewa sher fluid withth ewindshield washer
fl uid allyear round . Re
frig er ant No
teson refrig er ant
Obser vetheno teson oper ating fluids
(/ page32 4). Te
ch nica lda ta 329

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions
00AF Key NotDetected (red dis‐
pla ymessag e) *T
heSmar tKey canno tbe detected and mayno long erbe intheve hicle.
The Smar tKey isno long erintheve hicle andyouswit choffth eengine:
R Youcan nolongerst ar tth eengine.
R Youcan notcen trally lockth eve hicle. #
Ensur eth at theSmar tKey isin theve hicle.
If th eSmar tKey detection functi onhasa mal functi ondueto ast ro ng radio signal source: #
Stop theve hicle immediat elyinaccor dance withth etraf fic condi tions. #
Startth eve hicle withth eSmar tKey (/ pag e95).
00AF
Inser tKey *T
heSmar tKey isno tde tected continu ously .
De tection oftheSmar tKey istemp orarily malfunct ioningorfaulty .A wa rning tone willal so sou nd. #
Inse rttheSmar tKey intheignition lockand turnto thedesir edkeypos ition . #
Con sult aqu alif ied spec ialistwo rkshop.
00AF Don't Forget YourKey *A
warning tone willal so sou nd. Thismes sage reminds youto take your Sm artK ey wit hyo uwhen youlea vethe
ve hicle. 338
Displa ymessag esand warning/ indic ator lam ps

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions
Ù Rear AxleSteering Cur-
rent lyUnavailable *T
herear axle steer ing istemp orarily una vailable. Theturnin gra dius maybecome wider. #
Stop theve hicle inaccor dance withth etra ffic con dition sand restar tth eengine.
If th edispla ymessag edoes notdisappear : #
Drive on car efull y. #
Con sult aqu alif ied spec ialistwo rkshop.
Electron icRear AxleDiffer-
ential LockInoperative *T
heelectr oniclocking differe ntia lha sfa iled. #
Consult aqu alif ied spec ialistwo rkshop.
Electron icRear AxleDiffer-
ential LockCurrently
Unavaila ble *T
heelectr oniclocking differe ntia lis ove rheat ed. #
Letth eelectr oniclocking differe ntia lcool down bydriving defensiv ely.
Rear Spoiler ControlSys-
tem Inoper ative *T
herear wing cannotre ac hth eend position during retracti onand extends again if po ssi ble.
The vehicle's speedmaybe restrict ed.
If re tracti onofthere ar wing isbloc ked, e.g. byice: #
Ensur eth at thecause ofthebloc kage has been remo ved. #
Switc hof fth eengine andlockth eve hicle. #
Startth eve hicle afte ra fe w min utes.
The rear wing willmovetotheor iginal position . Displa
ymessag esand warning/ indic ator lam ps 34
3

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions
If th epr oblem persistsor thecause cannotbe detected: #
Consul ta qu alif ied spec ialistwo rkshop.
Rear Spoiler Inoperative
Limit ###mph *T
hevehicle's speedislimit edtotheva lue displa yed. Ther efor e, there ar wing cannotre ac hth eend position during
ex tensi on and only extends asfaras ispossi ble.
If ex tensi on ofthere ar wing isbloc ked, e.g. byice: #
Ensur eth at thecause ofthebloc kage has been remo ved. #
Switc hof fth eengine andlockth eve hicle. #
Startth eve hicle afte ra fe w min utes.
The rear wing willmovetotheor iginal position .
If th epr oblem persistsor thecause cannotbe detected: #
Consul ta qu alif ied spec ialistwo rkshop.
0051 *A
tle as tone door isop en. #
Close alldo ors.
0066 *T
hehood isopen. &
WARNIN GRisk ofacci dent dueto driving withth ehood unlocked
The hood mayopen andblockyo ur vie w. 34
4
Dis play messa gesand warning/ indic ator lam ps