2021 MERCEDES-BENZ GT COUPE AMG Owner's Manual

Br
ak esy stem No
teson thebr ak esy stem
The brak esy stem ofyour vehicle isdesigned for
hea vyloads. Therefor e, ther ema ybe noise when
br aking. Theloads intheent ire br ak esy stem
whic hoccur whendriving onara ce trac kare sig‐
nif ica ntlygr ea terth an those during normal oper‐
ation.
The increased brak efo rc es and temp eratur es
when driving onara ce trac kinhe rentl yle ad to
inc reased wearofthebr ak esy stem.
Chec kth econ dition andgeome try of thebr ak e
co verpla tebef oreusing theve hicle onara ce‐
tr ac k.
Obser vetheinf ormation onthecooling ofcom‐
ponen tswhic har esubject toloads when oper‐
at ed on ara ce trac k(/ page 102).
Br akin gwi th ABS
Re peat edhar dbr aking within theABS control
ra ng ecau ses highe rte mp eratur esinthebr ak e
sy stem than con trolled brakin gshor tly bef ore
th eABS control limit. Br
ak epad wear
The inner andouterbrak epa dsma yal so suf fer
"t aper edwear". This couldlead topoor pedal
fe el. Ther efor e, youmus talso checkth econ di‐
tion ofthebr ak epads beforeand afte ruse ona
ra ce trac kas partof ast andar dch eckfo rwe ar.
Br ak edis cs
Obse rveth einf ormation onthecooling ofcom‐
ponen tswhic har esubject tostra in inrace trac k
ope ratio n(/ page 102).
Dep endingontheve hicle's equipment, theAMG
cer amic high-per form anc ecom posit ebr akin g
sy stem isins talled inyour vehicle. Theassess‐
ment ofwe armus tth er efor ebe car ried out
using aspecial measurementprocedur e.The
br ak es aremeasur edusing thecur rent cond ition
of thecer amic composit emat erial asacr iter ia
fo rasse ssing thewe arins tead ofasses singth e
re sidua lth ickn ess.
Depe ndingon thetype ofbrak edisc, thefo llo w‐
ing arecom binat ionsused tomeasu rethewe ar
of thebr ak ediscs:
R Carbon-c eramic brak edisc: -
Visual assessment ofthebr ak edisc for
mec hanica ldama ge
- Wearmeas uremen tusin gth eindicat or
fi eld method; alternativ elyusing thePr o‐
ceq Carbo teq®
measu ring device (e.g. in
th eAMG Perfor mance Centeror atAMG
Tr ac kda ys)
R Gray cas tiron brak edisc:
- Visual check
- Crac kte st
- Wearthickn ess test
The ventil ation holeson gray cas tiron fricti on
ri ngs ofstandar dbr ak edisc sin par ticular could
bec ome blockedby brak edus t.Ther efor e, check
th eve ntil ation holesbefore usin gth eve hicle on
a ra ce trac kand clean them ifneces sary.Ifnec‐
essar y,also clean thedr illed holes.
Br ak efluid
Chec kth efo llo wing proper tiesofthebr ak efluid
bef oreeac huse onara ce trac k:
R Boil ingpoint
R Fillle ve l Dr
iving and parking 10
3

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

R
A (Comf ort): com fortable andeconomi‐
cal drivin gst yle
R C (Spor t):spor tydrivin gst yle
R B (Spor tPlus): particular lyspor tydrivin g
st yle
R I (RACE): drivin glik eon ara ce trac k
The I (RACE)dr ive pr ogr am mayno tbe
us ed on nor mal roads. I (RACE) mus ton ly
be activ ated and used ondedicat edrace cir‐
cui ts, noton public roads.
Mer cedes-AM Grecomme ndsselecting thedr ive
pr og ram A when incity traf fic or stop-and-go
tr af fic.
Depe nding onthedr ive pr og ram sele cted, the
fo llo wing vehicle charact eristic swill chang e:
R Drive:
- Engin eand trans miss ionman agemen t
- ActiveDis tan ceAssi stDIS TRONI C
R AMG Dynamics:
- The four agilit yfun ction sBas ic,
Ad vanced ,Pr oand Master areaut omati‐ cally
select eddepending onthedr ive pr o‐
gr am.
- The steer ing, shifttimin gpoint andstabi‐
lizat ionfunction sar eadap tedto the
select eddrive pr ogr am.
- When ESP®
is activ ated, agili tyfunction
Pr ois select edindrive pr ogr am I
RA CE. The Masterfunction isau tomati‐
cally selected when ESP®
is dea ctivated.
R Position oftheex haus tga sflaps
R Sus pen sion
R Steer ing
R Availabilit yof glide mode
R The I(RA CE)drive pr ogr am has thefo l‐
lo wing proper ties:
- The vehicle exhibits driving charact eris‐
tic ssuit edforth era ce trac k.
- Allvehicle systems arese tfo rmaximu m
spor tiness.
- The automatic transmiss ionshiftsup
lat er. -
The susp ension exhibits particular lyfirm
spr inging anddam ping settin gs.
- Glid emode isno tav ailable.
- The spor tysoun dch aract eristic ofthe
ex haus tsy stem isactiv ated.
% Youcan callupvehicle charact eristic svia
th ePe rfor mance menuintheon- boar dcom‐
put er.
% Youcan adjustth eagility functionsof AMG
Dynamic susing theAMG steer ing-wheel but‐
to ns.
Yo ucan also chang eth efo llo wing vehicle char‐
act eristic susin gth ebutt ons inthecent ercon ‐
sole:
R Position oftheex haus tga sflaps
R Sus pen sion 10
6
Driving and parking

Selec
tingthedr ive pr og ram #
Press DYNA MIC SELE CTswitc h1 forw ards
or bac kwards.
The selec teddr ive pr ogr am appear sin the
displa y2 and inthemultifunc tiondispla yin
th eins trument cluster. Conf
iguringdrive pr og ram I Mu
ltimed iasystem:
4 Vehicle 5
e DYNA MICSELECT
5 Individual #
Select theindividual setting. Switc
hingtheoper ation feedba ckfordr ive
pr og rams onoroff Mu
ltimed iasystem:
4 Vehicle 5
e DYNA MICSELECT #
Switc hNotif ication forUser on0073 oroff0053.
When this func tion isact ive, acor responding
messag eis sho wninthemedia displaywhen
a dr ive pr og ram issele cted withth e
DY NA MIC SELE CTswitc h. Displa
yingvehicl edata Mul
timedi asy stem:
4 Vehicle 5
e DYNA MICSELECT #
Select Vehicle Data.
The vehicle datais displa yed. Displa
yingengine data Multimedia
system:
4 Vehicle 5
e DYNA MICSELECT #
Select Engine Data.
% The actual (maximum) values that can be
ac hie vedfo rengine outputand engine tor‐
qu ema yde viat efrom thecer tified values
wit hin thecount ry-spe cificgu ideline sfo r
per missible toler anc es(basis: UN-ECE No.
85 orcount ry-spe cificgu ideline s).
Fa ctor sth at can influen cethis are, forex am‐
ple:
R Sea leve l
R Fuelgrade
R Outside temp eratur e
R Oper ating temp eratur eof theengine
% The values displa yedser veonl yas orient a‐
tion. Thevalues forengine outputand
engine torq ue show nin themedia display
ma yde viat efrom theactual values. Dr
ivin gand parking 10
7

Au
tomatic trans mis sion E-S
ELEC Tse lect or leve r Fu
nction oftheE-SELECT selectorleve r &
WARNIN GRisk ofacci dent dueto inc or‐
re ct gearshif ting
If th eengine speedishigher than theidle
speed andyouen gage thetransmission posi‐
tion 005Bor005E, theve hicle mayacceler ate
shar ply. #
Ifyo uen gage thetransmission position
005B or005E when theve hicle isat a
st ands till,alw aysdepr essthebr ak e
pedal firm lyand donotacc eler ateat
th esame time. &
WARNIN GRisk ofacci dent andinjury
due tochildr enleftunat tende din the
ve hicle
If ch ildr enarelef tunsuper visedintheve hi‐
cle, they cou ld,in pa rticular :
R Open doors,ther 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 Chang eth etransmission position.
R Startth eve hicle. #
Neverlea vechildr enunat tende din the
ve hicle. #
When leaving theve hicle, alwaysta ke
th eSmar tKey wit hyo uand lockth e
ve hicle. #
Keep theSmar tKey out ofreac hof chil‐
dr en. Use
theE- SE LECT select orleve rto chang eth e
tr ans missi on positio n.Thecur rent trans mis sion
po sitio nis displ ayed inthemultifunc tiondispla y. 005D
Park position
005E Reversege ar
005C Neut ral
005B Drive po sitio n 10
8
Driving and parking

Eng
aging reve rsege ar R #
Depr essthebr ak epedal andpush theE-
SE LECT select orleve rupw ards pas tth efirs t
point ofresis tance.
En gaging neutr alN #
Depr essthebr ak epedal andpush theE-
SE LECT select orleve rup ordown tothefirs t
point ofresis tance.
Sub sequently releasing thebr ak epedal will
allo wyo uto mo vetheve hicle freel y,e.g. topush
it or tow itaw ay.
If yo uwa nttheaut oma tictransm ission to
re main inne utr al005C 005C
even ifth eignit ionis
switc hedoff: #
Startth eve hicle. #
Depr essthebr ak epedal andengageneutral
005C. #
Release thebr ak epedal. #
Switc hth eignition off.
% Ifyo uth en exitth eve hicle leaving the
Smar tKey intheve hicle, theaut omatic trans‐
mission remains inneutr al005C. Eng
aging parkpositio nP #
Obser vetheno teson par king theve hicle
(/ page11 4). #
Dep ress thebr ak epedal untiltheve hicle is
st atio nary. #
When theve hicle isstatio nary,press butt on
005D.
Pa rk position isonl yeng aged when the
tr ans missi on positio ndisp lay 005D issho wnin
th emultifunc tiondispla y.Ifno transmissi on
positio ndispl ay005D appear s,sec ureth eve hi‐
cle topreve ntitfrom rolling away.
Pa rk position 005Diseng aged aut omatic allyif one
of thefo llo wing condition sis me t:
R youswit choffth eignition whentheve hicle
is statio naryand thetransmission isin posi‐
tion 005Bor005E.
R youopen thedr iver's door when theve hicle
is statio naryor when drivin gat ave ry low
speed andthetra nsmiss ionisin position 005B
or 005E.
% Tomaneu verwit han open driver's door ,
open thedr iver's door while statio naryand eng
agetrans miss ionposit ion005Bor005E
ag ain.
Eng agin gdr ive posi tion D #
Depress thebr ak epedal andpulltheE-
SE LECT select orleve rbac kpas tth efirs t
point ofresis tance.
Whe nth eaut omatic transmiss ionisin transmis‐
sion position 005B,itshif tsthege arsaut omat i‐
call y.This depends onthefo llo wing fact or s:
R theselect eddrive pr og ram
R theposition oftheaccelera torpeda l
R thedr iving speed No
teson thedou ble-clu tchfun ction The
double- clutchfunction isactiv ewhen chang ‐
ing down inall drive pr ograms. Thedouble -
clut chfunction reduces loadchang ere act ions
and suppo rts spor tydriving. Theacous ticper‐
cep tion ofthedouble-clutc hfunc tion chang es
depen dingon thedr ive pr og ram. Dr
iving andparking 10
9

Ro
cking theve hicl efree Ro
cking theve hicle free can help tofree ave hi‐
cle that has become trapped inslush orsnow .
To rock theve hicle free, movetheE- SE LECT
select orleve rupw ards and down wardspas tth e
point ofresis tance inorde rto switc hbe tween
tr ansmission positions005Band 005E(/ page10 8).
% Thema ximu mdesign spe edwhen switching
be twee n005B and 005Eis6mp h(9 km/h) . Man
ualgearshif ting #
Toactiv ate/ deacti vate:pr ess disp lay bu t‐
to n1.
The displ aybutt ondispla ysthecur rentl y
sel ect edgear setting 2:
R M(red): manualgearshif ting
R D(blue): automat ictrans miss ion %
Toper manen tly shif tth ege arsman uallyin
dr ive pr og ram = using thesteer ing wheel
ge arshif tpaddles ,selec tth eM (Manual) set‐
ting forth etra nsmiss ion.
* NO
TEDama getotheengine duetoshif t‐
ing uptoolat e The
automatic transmission doesnotshif tup
in manual modeeven when theengine' slim‐
iting speed isreac hed.
The fuel suppl yis int erru pte din order topre‐
ve nt theengine from overrev ving. #
Shif tup bef oreth eengine speedrea‐
ch es there dar ea intheta ch ome ter. 11
0
Driving and parking