2021 MERCEDES-BENZ GT 4-DOOR COUPE tires

Ar
ea perm eable toradio wav eson the
winds hield.................................................. 130
Infr ared-r eflectiv ewindshi eldfunction ........ 130 Clim
atecontr ol......................................... 13 1
Ov ervie wof climat econt rolsy stems ..........1 31
Oper ating theclimat econ trol system ......... 132 Dr
ivin gand parking ................................. 138
Dr iving ............ .................................... ........138
DY NA MIC SELE CTswitc h... ........................ 150
Au tomatic transmiss ion.............................. 152
Fu nctio nof the4MA TIC.............................. 156
Re fuel ing...... ............................................... 157
Pa rking .......................................................1 59
Dr iving anddriving safetysy stems .............1 66
Ve hicle towing instruct ions .........................2 25 Ins
trument Displa yand on-b oard
co mp uter ...... ............................................226
No teson theIns trument Displayand on-
boar dcom puter.............................. ............ 226
Ins trument Displayove rview ............ .......... 227 Ov
ervie wof thebutt ons onthesteer ing
wheel ..........................................................2 28
Oper ating theon- boar dcom puter.............. 228
Ov ervie wof displa yson themultifunc ‐
tion displa y... .................................... ..........2 30
Head -upDispl ay<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> 230 MBUX
multimediasy stem ...................... 233
Ov ervie wand oper ation .................. ............ 233
Sy stem settings .............................. ............ 239
Na vig ation .......................................... ........242
Te lephon e........................................ ...........2 48
Mer cedes meand apps....... .............. ..........251
Mer cedes -Benz emergency callsy stem ...... 259
Ra dio &media .................................. .......... 263
Sound settings ............................................ 270 Maint
enanc eand care...... ....................... 271
ASS YSTPL US service interva ldispla y.........2 71
Engi necompar tment............. ............. ........272
Clean ingand care.......................................2 78 Br
eak down assista nc e<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011001100110011> 285
Emerg ency<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011> 285
Fla ttir e<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011> 286
Batt ery(v ehi cle)<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> 292
To w star tin gor towing away <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011> 297
Elec trica lfus es<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011001100110011> 302 Whe
elsand tires <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011> 306
No teson noise orunusua lhandling char‐
act eristic s...................................................3 06
No teson regular lyinsp ecting wheels and
tir es ............................................................ 306
No teson sno wch ains ................................ 307
Ti re pressur e.............................................. 307
Loading theve hicle .....................................3 12
Ti re labeling ................................................ 317
Def initio nof term sfo rtir es and loading ..... 322
Cha nging awhee l..... .................................. 325
Emerg encysparewhee l..... ......................... 334 Te
ch nical data.......................................... 335
No teson tech nica lda ta <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011001100110011001100110011> 335
Ve hicle electr onics .....................................3 35 Cont
ents 3

*
NO
TEImpairment oftheoper ating effi‐
cie ncy ofthere stra int systems from
ins talling accessor ypar tsor from repair s
or we lding Air
bags andEmerge ncy Tensi oni ng Device s,
as wellas con trol unit sand sensorsfo rth e
re stra int systems, maybe installed inthefo l‐
lo wing areas ofyour vehicle:
R Door s
R Door pillars
R Doo rsi lls
R Sea ts
R Cockpit
R Instrument cluster
R Cen terconsole
R Lateral roof frame #
Donotins tallacc essor ypar tssuc has
audio systems inthese areas. #
Donotcar ryout repair sor we lding. #
Have afte rm arke tins tallation ofacc es‐
sor ies carried out ataqu alif ied spec ial‐
is two rkshop. Yo
uco uld jeopar dizeth eoper ating safetyof your
ve hicle ifyo uuse parts,tir es and wheel sas well
as acc essor iesreleva nt tosaf etywhic hha ve not
be en approve dby Mer cedes-Ben z.Saf ety-re le‐
va nt systems, e.g.thebr ak esy stem, maymal‐
func tion.Onl yuse Mercedes- BenzGenuineP arts
or par tsof equal qualit y.Onl yuse tires, wheels
and accessor iesthat have been specif ically
appr ovedfo ryo ur vehicle model.
Mer cedes-Ben zGenuineP arts aresubject to
st rict qualit yins pec tions.Eac hpar thas been
spec iallyde veloped, manufactured orselec ted
fo rMer cedes-Benz vehicles andadap tedto
th em. Ther efor e, onl yMer cedes- BenzGenuine‐
Pa rts should beused.
Mor eth an 300,0 00 differe nt Mer cedes-Be nz
Ge nui neP arts areav ailable forMer cedes-Benz
model s.
All author ized Mercedes-B enzCent ersmaint ain
a supply ofMer cedes-B enzGenuineP arts for nece
ssaryser vice andrepair work.In addition,
st ra tegically locatedpar tsdeliv erycent erspr o‐
vide forqu ick and reliable partsser vice .
Alw aysspecify theve hicle identif ication number
(VIN) (/page33 7) when order ing Mer cedes-
Benz GenuineP arts. Oper
ator's Manual
This Oper ator's Manual describesallmodels and
all standar dand optio nal equipme ntavailable for
yo ur vehicle atthetime ofthis Opera tor's Man‐
ua lgoing topress. Countr y-specif icdif fere nces
ar epo ssi ble. No tethat your vehicle mayno tbe
eq uipped withall featur esdesc ribed. Thisisalso
th ecase forsy stems andfunc tionsre leva nt to
saf ety. Ther efor e, theeq uipment onyour vehicle
ma ydif ferfr om that inthedescr iption sand illus‐
tra tion s.
The original purchase agreement foryo ur vehicle
cont ains alis tof all ofthesy stems inyour vehi‐
cle.
Should youha ve anyqu estion scon cerning
eq uipment andoper ation, please consult an
aut hor ized Mercedes- BenzCenter. Gener
alno tes 23

*
NO
TEDama getotheve hicle duetodriv‐
ing toofast and due toimpact sto the
ve hicle underbody orsuspension compo‐
nent s In
thefo llo wing situat ions,in par ticular ,th er e
is arisk ofdamag eto theve hicle:
R The vehicle becomes grounded, e.g.ona
high curb oran unpavedro ad
R The vehicle isdriven toofa st over an
obs tacle ,e.g. acurb ,spe edbump orpot‐
hole
R Ahea vyobject strike sth eunderbody or
suspension componen ts
In situation ssuc has these, damag eto the
body ,underbody ,suspension componen ts,
wheels ortires ma yno tbe visible. Compo‐
nen tsdamag edinthis wa ycan unexpec tedly
fa ilor ,in thecase ofan acciden t,ma yno lon‐
ge rabso rbthere sulting forc eas intended.
If th eunderbody panelingisdamag ed,flam‐
mable materials suchas lea ves, grass or
twigs cancollect between theunderbody and th
eunderbody paneling.Thesematerials may
ignit eif th ey come intocont actwith hot
par tsof theex haus tsy stem. #
Have theve hicle checkedand repair ed
immediat elyat aqu alif ied spec ialist
wo rkshop.
or #
Ifdr iving safetyis im pair edwhile con‐
ti nui ng your jour ne y,pull over and stop
th eve hicle immediat ely, while paying
att ent ion toroad and traffic condi tions,
and cont actaqu alif ied spec ialistwo rk‐
shop. Ve
hicl eswith a48 Von-b oardele ctrical sys‐
te m (EQ Boo sttech nology) &
DANG ER Risk offata linj uryby touc hin g
damag edhigh -volt ageco mp onent s
Ve hicles witha48 Von-boar delectr icalsys‐
te m cont ainindivi dualhigh-v oltagecom po‐
nents. Thesehigh-voltagecom ponents are
under highvoltag e. If
yo umod ifycomp onent partsof these high-
vo ltag ecom pone ntsor touc hdamag edcom‐
pon entpar ts,yo uma ybe elec troc uted.
Hig hvo ltag ecom pone ntsma ybe damag ed
in an acc ident ,alt hough thedamag ema yno t
be visible. #
Neverper form modif icationstocom po‐
nent parts of high-v oltagecom ponents. #
Neverto uc hdamag edcomp onent parts
of high-v oltagecom ponent s. #
Neverto uc hco mp onent partsof high-
vo ltag ecom pone ntsaf te ran accide nt. Ve
hicles witha48 Von-boar delectr icalsystem
con tain high voltag ecom pone nts. These compo‐
nen tsaremar kedwit hahigh voltag elabel: 26
General notes

R
Chan gegear bef oreth eta ch ome terneedl eis
00C3 ofthewa yto there dar ea oftheta ch ome‐
te r.
R Donotshi ftdo wn age ar man uallyin order to
br ak e.
R Avoid overstrai ning theve hicle, e.g.driving at
full thro ttle .
R Donotde press theaccelera torpeda lpas t
th epr essur epoint (kickdo wn).
R Onlyincr ease theengine speedgradually and
accelera tetheve hicle tofull spee daf te r
1, 000 miles(1 ,500 km).
This also app lieswhe nth eengine orpar tsof the
dr ivet ra in have been replaced.
Please alsoobser vethefo llo wing breakin g-in
no tes:
R Incer tain drivin gand drivin gsaf etysy stems,
th esensor sadjus taut omaticall ywhile acer‐
ta in dis tance isbe ing driven afte rth eve hicle
has been delivered orafte rre pair s.Fu llsy s‐
te m effectiv enes sis no tre ac hed untilth e
end ofthis teac h-in proce ss. R
Brak epads ,br ak edisc sand tires that are
eit her newor have been replaced onlyac h‐
ie ve optimum braking effect and grip afte r
se veralhundr edmiles ofdrivin g.Com pen‐
sat efo rth ere duced braking effect by appl y‐
ing great erforc eto thebr ak epedal. No
teson driving &
WARNIN GRisk ofacci dent dueto
object sin thedr iver's foot we ll
Obj ectsin thedr iver's foot we llma yim pede
pedal travelor bloc kadepr essed pedal.
This jeopardizes theoper ating androad
saf etyof theve hicle. #
Stow allobj ect sin theve hicle secur ely
so that they canno tget intoth edr iver's
fo ot we ll. #
Alw aysins tallth efloor mats securely
and asprescr ibed inorder toensur e
th at ther eis alw ayssuf ficie ntroom for
th epedals. #
Donotuse loose floor mats anddonot
place floor mats ontopof one another. &
WARNIN GRisk ofacci dent dueto inc or‐
re ct foot we ar
In cor rect foot we arinc ludes, forex am ple:
R Shoes withplat form soles
R Shoes withhigh heels
R Slipper s #
Alw ayswe arsuit able foot we arso that
yo ucan operat eth epedals safely. &
WARNIN GRisk ofacci dent ifth eignition
is switc hedoffwhile driving
If yo uswit choffth eignition whiledriving,
saf etyfun ction sar ere strict ed orno long er
av ailable.
Yo uwill need touse considerably morefo rc e
to steer and brak e, forex am ple. #
Donotswit choffth eignition whiledriv‐
ing. 14
2
Driving and parking

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
% Also obser vetheno teson regular lych ecking
wheels andtires (/ page306).
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 improve dstabilit 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
(/ page30 7) and onactivatin gsn ow chain
mode . 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 Dr
iving andparking 14
5

ri
de thelaws ofphysics. 4MA TICcannotta ke
acc oun tof road, weather and traf fic condi tions.
4MA TICisonly anaid. Youar ere sponsible espe‐
cially formaint ainingasaf edis tance from the
ve hicle infront, forve hicle speed, forbr aking in
good timeandforst ay ing inlane.
% Inwint ryroad con dition s,themaximum
ef fect of 4MA TICcan beachie vedonl yif yo u
use wint ertires (M+ Stir es), withsn ow
ch ains ifnec essar y. Re
fueli ng Re
fueli ngtheve hicl e &
WARNIN GRisk offire or explosion from
fuel
Fu els arehighly flammab le. #
Fire,open flames ,smo kingand creat ion
of spar ksmus tbe avo ided. #
Swit choffth eignition and,ifav ailable,
th est atio naryheat er,bef oreand while
re fuel ingtheve hicle. &
WARNIN GRisk ofinju ryfrom fuels
Fu els arepoisonous andhazar dous toyour
healt h. #
Donotsw allo wfuel orletit co me into
co ntact withsk in, eyes orclo thing. #
Donotinhale fuelvapor . #
Keep childr enaway from fuel. #
Keep door sand windo wsclos edduring
th ere fuel ingprocess.
If yo uor other people comeintocont actwith
fuel, obser vethefo llo wing: #
Imm ediat elyrinse fuelof fyo ur skin wit h
soap andwater. #
Iffuel comes intocont actwithyo ur
ey es, immediat elyrinse them thor‐
oughl ywit hclean water.Seek medical
att entio nimm ediately . #
Ifyo usw allo wfuel, seek medicalatten‐
tio nimm ediat ely. Do notind uce vomit‐
ing. #
Cha ngeimmedi ately out ofclo thing that
has com eint ocon tact with fuel . &
WARNIN GRisk offire and explosion due
to electr ostatic charge
Ele ctrostatic charge can ignitefuel vapor . #
Beforeyo uopen thefuel filler cap or
ta ke hold ofthepum pnoz zle, touc hth e
me tallic vehicle body. #
Toavo idcreatin gano ther electr ostatic
ch arge ,do notget intoth eve hicle again
dur ing there fuel ingprocess. *
NO
TEDama gecau sed bythewr ong fuel Ve
hicles withaga soline engine:
Ev en small amounts ofthewr ong fuelcould
re sult indamag eto thefuel system, the
engine andtheemission control system. #
Onlyre fuel withlow- sulfur gasoline.
This fuelmaycont ainupto10%ethanol. Your
ve hicle issuit able foruse withE1 0fuel . Dr
iving andparking 15
7

#
Tocancel :pull steer ing wheel gearshif tpad‐
dle 1.
The mult ifunction displa ysho wsthemessag e
DRIFT MODE Canceled andtheâ warning
lam pgoes out. #
Toconf irm: pull steer ing wheel gearshif t
paddle 2.
The mult ifunction displa ysho wsthemessag e
DRIFT MODE Active and theâ warning
lam plight sup.
Deactiv ating DRIFT MODE #
Pull steer ing wheel gearshif tpaddles 1and
2 and hold forhal fa second.
The messa geDRI FTMODE Activeand the
â warning lam pgo out.
DRIF TMOD Eis aut omat icallydeact ivat ed inthe
fo llo wing situat ions:
R ESP®
is act ivat ed.
R Manual shiftingis deact ivat ed –th ege arbo x
is in posit ion005B.
R The drive pr og ram I isswitc hedoff.
R The vehicle isswitc hedoff. R
Automatic switchof fis requ ired bytheve hi‐
cle.
% Afterdr ifting andbeforecontinuing thejour‐
ne y,ch eckth ewheels andtires fordama ge.
In par ticula r,ch eckth etir etread depthand
tir econ tact surface overth eent ire widt hof
th etir es (see theve hicle Operator's Manual). Re
ar wing Fu
nction ofthere ar wing
The rear wing improve sth eve hicle's driving sta‐
bilit yand automat icallyre tracts andextends
wh ile th eve hicle isin mo tion. Depending onthe
ve hicle speed, itadop tsdif fere nt positio ns and
th us adap tstheve hicle's aerodynamics tothe
dr iving condition s.
Ve hicles withth eAMG Aerodynamic package are
eq uipped withafixe dre ar wing (/page20 9).
De pen dingon whic hdr ive pr ogram hasbeen
selec ted, there ar wing automat icallyex tends at
a spe edgrea terth an 44 mph(7 0km/h). Dependi
ngon thedr ive pr og ram, there ar wing
aut omat icallyre tracts below asp ee dof approx ‐
imat ely50 mph(80 km/h).
Yo ucan retract and extend there ar wing man‐
uall yfo rclea ning (/page208) .
Ext endin gand retracti ngthe rear wing for
clean ing &
WARNIN GRisk ofbeco ming trap ped
whe nyo uex tend and retract there ar
wing manually
Pa rts of thebody could become trapped. #
Ensur eth at ther eis no one inthe
sw eep ofthere ar wing when you
ex tend there ar wing . #
Ifsom eonedoes become trapped when
th ere ar wing isex tende d,press thedis‐
pla yswitc hag ain immediat ely. 208
Driving andparking

%
If,afte rth ecar wash, youre mo vethewa x
fr om thewindshield andwiper rubber s,this
will preve ntsme aring and reduce wiper
noise. No
teson using apo we rwa sher &
WARNIN GRisk ofan acci dent when
us ing powe rwa sher swit hro und -spr ay
nozzl es
The waterje tcan caus eex tern all yin visi ble
damag e.
Com ponentsdamag edinthis wa yma yune x‐
pec tedly fail. #
Donotuse apo we rwa sher withro und-
spra yno zzles. #
Have damag edtires orchassis parts
re placed immediat ely. To
avo iddamag eto your vehicle, observethefo l‐
lo wing when usingapo we rwa sher :
R The Smar tKey isat amin imum distance of
10 ft(3 m) away from theve hicle. Other wise,
th eta ilg atecould openunintentio nally.
R Maintain adi st anc eof at leas t11 .8 in
(30 cm) totheve hicle.
R Vehicl eswith decorativ efo il: par tsof your
ve hicle areco veredwit hadecora tivefo il.
Maint ainadis tan ceofat leas t27 .6 in
(70 cm) between thefo il-c ove redpar tsof the
ve hicle andthenoz zleofthepo we rwa sher .
Mo vethepo we rwa sher nozzlearound whilst
cleaning. Thewaterte mp eratur eof the
po we rwa sher mustno tex ceed 140°F
(60°C ).
R Obse rveth einf ormation onthecor rect dis‐
ta nce intheim plement manufacturer'soper‐
ating instruction s.
R Donotdir ect thenoz zleofthepo we rwa sher
dir ectl yat sensitiv epar ts,e.g. tires, gaps,
elect rical com pone nts,batter ies, light sour‐
ces and ventil ation slits. Wa
shing theve hicl eby hand *
NO
TEEngi nedama gedue towa ter
ing ress #
Take car eno tto point thewa terje t
dir ectly towa rdsth eair inle tgr ille belo w
th ehood. Obser
vetheleg alrequ iremen ts,e.g. inanumb er
of coun tries, washing byhand isonl yper mitt ed
in specially designatedwash bays. #
Use amild cleaning agent, e.g.carsham poo. #
Washtheve hicle withluk ewa rmwaterusi ng
a sof tcar spong e.When doingso,donot
ex pose theve hicle todirect sunlight . #
Carefully hosetheve hicle offwit hwa terand
dr yusi ng ach amois .
% Obse rveth eno teson thecar eof vehicle
par ts(/ page28 1). Maint
enance andcare27
9