2021 MERCEDES-BENZ GT COUPE wheel

The
inside rear vie wmir rorand theoutside mir‐
ro ron thedr iver's side willautomaticall ygo into
anti- glar emode iflight from aheadlam phit sth e
sensor ontheinside rear vie wmir ror.
Sy stem limit s
The system will notgo intoanti- glar emode if:
R The engineisswit ched off.
R Reversege ar iseng aged.
R The interior light ingisswit ched on. Fr
ont- passeng erout side mirrorpar kingpos i‐
tio nfun ction The
parking posit ionmak espar kingeasier .
The front -pass engerouts idemirrorwil lswiv el
do wn wardsin thedir ect ion ofthere ar wheel on
th efront passeng er'sside when:
R The parking position isstor ed (/ page88).
R The front- passeng ermir roris sele cted.
R Reversege ar iseng aged. The
fron t-passe nger out side mirrorwil lmo ve
bac kto its original positionwhen:
R Youshif tth etra nsmiss iontoano ther tra ns‐
mission position.
R Youar etrav eling ataspeed great erthan
9 mp h(1 5 km/h).
R Youpr ess thebutt onforth eoutside mirror
on thedr iver's side. St
oring thepa rking posit ionofthefront-
pa sseng erout side mirrorusi ng reve rsege ar St
oring #
Sele ctthefront -passen geroutsi demir ror
usin gbut ton2. #
Eng agere ve rsege ar. #
Movethefront -passen geroutsi demir rorint o
th edesir edpar king position usingbutton1. 88
Lightandvisibility

Fu
nction ofEmo tion Start #
Startth eve hicle withth est ar t/ stop butt on
(/ page94 )and simult aneousl ypull one of
st eer ing wheel gearshif tpaddles 1or2.
R The idlespee dis inc reased brief lywh en
st ar tin gth eengine.
R The exhaus tga sflaps areopen ed(spo rty
ch aract eristic )(/ page10 1).
St arting theve hicl eusing theSm artK ey
Yo ucan also star tth eve hicle withth eSmar tKey
in theignition lock.The ignition lockis in the
re ar stor ag espace inthecent ercon sole. 005A
Toremo vetheSmar tKey
0047 Toswitc hon thepo we rsupp ly
0048 Toswitc hon theignition
0049 Tostar teng ine #
Shift th etra nsmiss iontoposition 005Dor005C. #
Depr essthebr ak epedal. #
Inser tth eSmar tKey intoth eignition lockand
tur nto keypos ition 0049. #
Ifth eve hicle does notst ar t:
R Swi tchof fconsu mersth at areno t
re qu ired.
R Remo vetheSmar tKey from theignition
loc k.
R Inser tth eSmar tKey intoth eignition lock
ag ain afte ra shor twa itin gper iod.
R Turn theSmar tKey tokeypos ition 0048.
The indic ator lam psintheins trument
clus terlig ht up.
R Turn theSmar tKey tokeypos ition 0049.
% Youcan also switchon thepo we rsupp lyor
th eignition withth eSmar tKey .Ad dition ally,
tur nth eSmar tKey tokeypos ition 0047or0048 . Br
eak ing- inno tes To
preser vetheengine during thefirs t
1, 000 miles(1 ,500 km):
R drive at varying road spee dsand engine
spee ds. Dr
ivin gand parking 95

Yo
uwill need touse considerably morefo rc e
to steer and brak e, forex am ple. #
Donotswit choffth eignition whiledriv‐
ing. &
DANG ER Risk ofdeat hcause dby
ex haus tga ses
Combus tionengines emitpoisonous exhaus t
ga ses suchas carbon monoxide.Inhaling
th ese exhaus tga ses ishazar dous tohealt h
and leads topoisonin g. #
Neverlea vetheengine or,if pr esent ,
th eauxiliar yheating running inan
encl osedspa cewithout sufficie ntventi‐
la tio n. &
WARNIN GRisk ofskid ding and ofan
acci dent dueto shif ting down onslipper y
ro ad sur faces
If yo ushif tdo wn onslipp eryro ad sur faces to
inc rease theengine braking effect, thedr ive
wheels maylose traction . #
Donotshif tdo wn onslipper yro ad sur‐
fa ces toinc rease theengine braking
ef fect. &
DANG ER Risk offata linj urydue topoi‐
sonous exhaus tga ses
If th eta ilpipe isbloc kedor suf ficie ntventil a‐
tio nis no tpo ssi ble, po isonou sex haus tga ses
suc has carbon monoxidemayent ertheve hi‐
cle. This isthecase when theve hicle
becomes stuc kin snow ,fo rex am ple. #
Keep theta ilpipe andthear ea around
th eve hicle free from snowwhen the
engine orthest atio naryheat erareru n‐
ning . #
Ope nawi ndo won theside oftheve hi‐
cle facing away from thewind toensur e
an adeq uatesupply offresh air. &
WARNIN GRisk ofacci dent andinjury
due tobeing under theinf luence ofalco‐
hol and drugs while driving
Dr inkin gand driving and/or taking drug sand
dr ivi ng areve ry dang erous combin ations.
Ev en asmall amount ofalcohol ordrugs can
af fect your reflex es, percep tion sand judg‐
ment .
The possibility ofaser ious oreve nfa ta lacc i‐
dent aregr eatl yinc reased when youdr ink or
ta ke drugs and drive. #
Donotdr ink ortake drugs and drive or
allo wan yone todrive who hasbeen
dr ink ing ortaking drug s. &
WARNIN GRisk ofacci dent dueto the
br ak esy stem overheating
If yo ulea veyour foot on thebr ak epedal
when driving, thebr ak esy stem mayov er‐
heat.
This increases thebr aking distance and the
br ak esy stem mayeve nfa il. Dr
ivin gand parking 97

To
remo vesalt build-up:
R Brak eoccasionally whilepaying attention to
th etra ffic con dition s
R Carefull ydepr essthebr ak epedal attheend
of thejour neyand when star tin gth ene xt
jour ney
No teson hydropl aning
Hyd roplaning cantake place onceacer tain
amount ofwa terhas accumu lated on thero ad
sur face.
Obs erve thefo llo wing notesdur ing heavyprecip‐
it ation orinconditions inwhic hhy droplaning
ma yocc ur:
R Reduce speed
R Avoid tireru ts
R Avoid sudden steer ing movements
R Brak ecar eful ly
% Alsoob ser vetheno teson regular lych ecking
wheels andtires (/ page292). No
teson driving through wateron the road
sur face
Wa terwhi chhas entered intoth eve hicle can
damag eth eengine, electricsand transmission .
Wa tercan alsoent ertheair intakeof theengine
and cause engine damage.
Obser vethefo llo wing ifyo umus tdr ive th ro ugh
wa ter:
R The water,when calm,ma yonl yre ac hth e
lo we redg eof theve hicle body.
R Drive at wa lkin gpace atmos t,other wise
wa tercan entertheve hicle interior orengine
com partment .
R Vehicles trave ling infront ,or onc omin gve hi‐
cles, cancreat ewa veswhic hma yex ceed the
maximu mper missi bledep thofthewa ter.
The braking effect of thebr ak es isreduced afte r
fo rd ing. Brak ecar efull ywhile paying attent ion to
th etraf fic condi tions untilbr aki ng powe rhas
been fullyrestor ed. Fu
nction ofrear axle steer ing The
rear axle steer ing isan electr omechanical
auxiliar yst eer ing onthere ar axle whichadjus ts
th esteer ing ofthere ar wheels accordin gto the
position ofthefront wheels, depending onthe
speed. Thisresults ingreat ermaneuv erabil ity
and improv ed stabilit y.
Re ar axle steer ing has thefo llo wing charact eris‐
tic s:
R Reduced steer ing effort and turnin gra dius
re sulting inreduced parkingef fort
R Improve ddr iving stabilit y,e.g. when corner‐
ing
R Mor edir ect steer ing resulting inim prov ed
handling oftheve hicle
Obser vetheno teson sno wch ains
(/ page29 3)and onactivatin gsn ow chain
mode . Dr
ivin gand parking 99

Inf
orma tion ontheAMG ceramichigh -per‐
fo rm ance comp osit ebr ak esy stem The
brak esy stem isdesigned forhea vyloa ds.
This maylea dto noi sewhen braki ng. Thisef fect
can also occu raf te rwa shing theve hicle.
The noise depends onthefo llo wing fact or s:
R Spee d
R Brak efo rc e
R Environme ntal cond itions, e.g.te mp eratur e
and airhumidity
% Have thebr ak esy stem checkedat aqu ali‐
fi ed specialis two rkshop afte rit has been
subject edtoextreme load s. EC
Ostar t/s topfunc tion Ope
ratio nof the ECOstar t/s topfunc tion
The engineisswi tched offau tomatical lyin the
fo llo wing situat ionsifall vehicle conditions for
an aut omat iceng inestop areme t:
R youbr ak eth eve hicle toast ands tillin trans ‐
miss ionposit ion005Bor005C. If
yo uswit chon theHOLD function intransmis‐
sion position 005Bor005C, theengine willautomati‐
call yst op inthefo llo wing situat ions:
R youstop behind ave hicle that ispullin g
aw ay.
R youstop atast op sign when ther eis no vehi‐
cle infront ofyou.
R youtur nth esteer ing wheel hardat alow
speed.
% Intra nsmiss ionposition 005E,theengine is
no tswitc hedoffaut omaticall yeve nwh en
th eHOLD function isswitc hedon.
The engine isrestar tedaut omatic allyif:
R youre lease thebr ak epedal intransmission
position 005Bwhen theHOLD function isno t
activ eand theve hicle does notst ar tto
mo ve.
R youshif tfr om transm issionposi tion005D.
R youre lease thebr ak epedal andtheve hicle
st ar ts to mo veon age ntle downh ill gr ad ient
at aspe edbelow 3mp h(5 km/h).
R youdepr esstheaccelera torpeda l. R
youper man ently act ivat eman ualgearshif t‐
ing .
R youpull thelef t-hand steer ing wheel gear‐
shif tpaddle.
R anaut omat iceng inestar tis requ ired bythe
ve hicle.
If th eengine wasswitc hedoffby theEC Ostar t/
st op funct ionand youlea vetheve hicle, awa rn‐
ing tone sou nds. Inadditio n,theVehicle Ready
to Drive Switchthe Ignit ionOffBefor eEx iting
messag eappear sin themultifunc tiondispla y.If
yo udo notswit choffth eignition ,th eignition is
aut omaticall yswitc hedoffaf te rone minut e. 10
0
Driving and parking

Ra
ce trac koper ation Inf
orma tion onrace trac koper ation %
Racetrac kope ratio nis und erstood asthe
oper ation oftheve hicle inextreme situa ‐
tio ns when itis us ed on race trac ks or
closed-of ftr ac ks.
Yo ur vehicle maybe used onboth public roads
and race trac ks.The vehicle operating loads dif‐
fe rdepe nding onuse, whichrequ ire dif fering
ma intena nce interva ls.
When theve hicle isoper ated on ara ce trac k, the
com pone ntparts ar esubject tohigher loads
th an on thero ad.
To acc oun tfo rth ese loads, thefo llo wing meas‐
ur es inpar ticular areta ke nas partof themain‐
te nance interva ls:
R Chec kingand replacing individual compo‐
nen ts
R Overhauling completeassem bliesafte rspe‐
cif icper iods ofuse Ad
dition alch ecks mus talw aysbe car ried out on
th eve hicle beforeand afte reac huse onara ce‐
tr ac k.
* NO
TEDama getocom pone ntparts
th ro ugh arise intemp eratur eaf te roper‐
ation onara ce trac k Swi
tching theve hicle offdir ectl yaf te roper a‐
tion onara ce trac kcan lead toacon tinued
te mp eratur eincr ease ofthecom ponen t
par tsas are sult ofheating whiletheve hicle
is statio nary.
The com ponent partsma yth er eb ybe per ma‐
nen tly damag edinexc eption alcases. #
Donotswitc hof fth eve hicle immedi‐
at ely. Car ryout cool down laps atlow
speed withminimal brak eapplication.
Assemblies understra in, suc has the
engine andthebr aking system, cool
do wn faster this wa y. #
Alw aysallo waTr ac k-Chec kto be car‐
ri ed out atan aut hor ized Mercedes-
Benz Centerbef oreand afte ruse onthe
ra ce trac k. Mo
torspor teq uipment ,e.g. six-point seatbelts,
ar eonl yint ended foruse wher ero ad traf fic re g‐
ulations donotappl y.This also applies tomodif i‐
cations toboth thesuspension andaerodynamic
com ponen tpar ts.
Yo ucan obtain further information onser vicin g
yo ur vehicle from anaut hor ized Mercedes-Ben z
Cent er. No
teson thech aract eristics ofindi vidual
ve hicl easse mblie s Due
tospecif icvehicle operating loads inrace‐
tr ac kope ratio n,additio nal requ iremen tsmus t
be obser ved.
The follo wing vehicle assemblies areaf fect ed in
pa rticular :
R Brak esy stem
R Wheels andtires
R Suspension
R Aerodynamic componen ts 10
2
Driving and parking

When
driving onara ce trac k, mak esur eth at the
br ak efluid isno tmor eth an 12 mont hsold.
Br ak ecali per,br ak ehose sand brak eline s
Chec kth efo llo wing fordama geeac htime
bef oredr iving theve hicle onara ce trac k:
R The dustboo tson thebr ak ecaliper s
R The brak ehoses andbrak elines
Re place them ifneces sary.
Br ak eco olin g
Spe cialai rdef lect or sand chann elsareins talled
on thefront and rear axle sso that thebr ak es
ar ecooled sufficie ntly.The ysupply thebr ak e
discs withcooling air.Chec kth at they arein per‐
fe ct condi tionandcorrectl yins talled eachtim e
bef oredr ivin gth eve hicle onara ce trac k. Exces ‐
si ve wearcan becaus edbydriving overcurbs,
fo rins tance. Forth is reason ,re gular lych eck
th ey areall com pleteand installed securely.
In addi tion, checkth at theair guide platesare
seat edsecur elyand clean beforeand afte rdr iv‐
ing theve hicle onara ce trac k. Obser
vetheinf ormation onthecooling ofcom‐
ponen tswhic har esubject toloads when drivin g
on ara ce trac k(/ page 102). Whee
lsand tires No
teson wheels
* NO
TERestrictions relatin gto suspension
se ttin gsand driving charact eristic s Dr
ivin gwit hwheels withdif fering dimens ions
of thefo llo wing featur escoul dlead torestric‐
tions relatin gto thesuspension settings and
dr iving charact eristic sof theve hicle:
R Diame ter
R Wheel offset #
Onlyuse thewheels prov ided by
Mer cedes- AMGforuse onara ce trac k. #
Onlyuse wheels withappr ovedge ome‐
tr y. Do
notus eslic k tires. Suspensi on and body
components mayot her wise besubject edto
exc essiv elyhigh loads. Obser
vethefo llo wing noteson chang inga
wheel:
R Chan gethewheels afte r9,320 miles
(1 5,000 km)onara ce trac kat thelat est.
R Toensur econ cent ricity and late ra ltr uenes s,
ch eckth ewheel contact surface fordama ge
when chang ingawheel. Theseshoul dalso
be meas ured intheev ent ofimbalance.
The wheel boltsaresubject edtohigh wearwhen
used onara ce trac k. To ensur eth ewheels are
bolt edsecur elyon aper manen tbasis, replace
th ewheel boltsinthefo llo wing situat ions:
R Afterapp roxima tely 620 miles(1 ,000 km) on
a ra ce trac k.
R Afterte nbo lting proce duresat thelat est.
No teson tires &
WARNIN GRisk ofinju rythro ugh dam‐
ag ed tires
Dam aged tires can caus etir epr ess ureloss . 10
4
Driving and parking

#
Chec kth etir es regular lyforsigns of
dama geand replace anydamag edtires
immediat ely. Chec
kth etir es fordama geand thecor rect tire
tr ea ddep thboth bef oreand afte ruse onara ce‐
tr ac k. Onl yth en isitsaf eto drive on ara ce trac k
and onpublic roads.
As are sult ofthedr iving style and athigh ambi‐
ent temp eratur es,when driving onara ce trac kit
ma ybe neces saryto com pens atefo rth e
inc rease inpressur ein wa rm tires by releasing
air .Ev en forwa rm tires ,th especif iedtirepr es‐
sur ema yonl ybe exceed edbymax. 0.5bar.
Af terth etir es have cool eddown again, youmus t
re adjus tth etir epr essur ein accor dance withth e
specif ications inorder todrive on public roads. Sus
pens ion Sus
pens ionsettings
The fact or yse tting prov ides agood compromise
fo rdr iving onpub licroads and onara ce trac k. Ve
hicl emeasur ements
Ev en smal lch ang estothesuspension settings
alt er thedr iving charact eristic sof theve hicle. To
ensur eop timal driving charact eristic s,thespeci‐
fi ed values andtoler anc esoftheindividual sus‐
pension settings mustbe com plied with.The
dr iving charact eristic sof theve hicle mayot her‐
wise beundesir able.
Ve hicle measur ements arere qu ired inthefo llo w‐
ing situat ions:
R The vehicle height haschang edinrelation to
th eop timiz edsetting.
R The vehicle isfreq uentl ysubject edtovery
high loads, e.g.when driving overcurbs.
Ther efor e, checkth eve hicle height atregular
int erva ls and, ifnec essar y,per form vehicle
measur ements. No
teson suspension components
Despit ere gular checks,and rega rdless of
whe ther there leva nt suspe nsion com ponents
ar ein goo dcond ition, thefo llo wing compone nts
mus tbe replaced afte ra cer tain amount ofuse
on thera ce trac k:
R Whe elbol ts(/ page 104)
R Wheelhub sin clu ding thewheel bearings No
teson engine oil Chec
kth eengine oilleve lbef oreopera tingin
ra ce trac kmod e. DY
NA MIC SELECT switch Fu
nction oftheDY NA MIC SELECT switch Use
theDY NA MIC SELE CTswitc hto chang e
be tween thefo llo wing drive pr ogr ams:
R o (Slipp ery): optim ized pulling away and
dr ivin gch aract eristic sin wint ryand slippe ry
ro ad con dition s
R = (Individual):ind ividual setting s Dr
ivin gand parking10
5