2021 MERCEDES-BENZ GT 4-DOOR COUPE ECO mode

The
Oper ator's Manual andMaint enanc eBookle t
ar eim por tant docum ents andshould be kept in
th eve hicle. Ser
vice andvehicl eoper ation Ve
hicl eoper ation outside theUS Aor Cana da When
youar eabr oad withyo ur vehicle, observe
th efo llo wing points:
R Service point sor replacemen tpar tsma yno t
be available immediat ely.
R Unleaded fuelmayno tbe available forve hi‐
cles withacat alytic converter .Leaded fuel
ma ycause damag eto thecat alytic converter .
R The fuel mayha ve an extreme lylow oct ane
numb er.Un suit able fuelcancause engine
damag e.
Some Mercedes-Benz modelsareav ailable in
Eur ope thro ugh ourEuropean DeliveryPr og ram.
Fo rmor einf ormation, pleaseconsult anauthor‐
ized Mercedes‑B enzservice center,or write to
one ofthefo llo wing address:
In theUS A: Mer
cede s-Benz USA,LLC
Eur opea nDeliv eryDepar tment
One Mercedes-Benz Drive
Sandy Springs, GA30328
In Canada:
Mer cedes-Benz Canada,Inc.
Eur opea nDeliv eryDepar tment
98 Vande rhoof Avenue
To ronto, Ont ario M4G 4C9 Mai
nten anc e Yo
ur cus tomer advisorconf irms theser vice in
th eser vice repor t. Ro
adside Assistan ce The
Mercedes -Benz Roadside Assis tance Pro‐
gr am offers tech nica lhel pin thecase ofa
br eakdo wn.Your calls totheto ll-f reeRo adside
As sis tance Hotline areans weredby our agents
24 hour sa da y,365 days aye ar.
1- 80 0-FO R-MER Cedes (1-800-367-63 72)(US A) 1-8
00-387-0 100(Canada)
Yo ucan find further information inthe
Mer cedes-Ben zRo adside Assis tance Progr am
br oc hu re (US A)orthe"R oadside Assistance"
secti onintheSer vice andWarrant ybook let
(Canad a).Youwill find both intheve hicle docu‐
ment wallet. Chang
eof address orchang eof ow ner ship In
theev ent ofach ang eof addr ess, please send
us the"No tification ofaddr esschang e"inthe
Ser vice andGuarant eeboo kletor simply callth e
Mer cedes-Ben zCus tomer Assis tance Center
(US A)on theho tline number
1-8 00-FOR-MER Cedes (1-800-367-63 72)or Cus‐
to mer Service (Canada )on 1-800-38 7-0100. We
can then reac hyo uin atim elyfa shion, ifneces‐
sar y.
If yo usell your Mer cedes,pleas elea veall liter a‐
tur ein theve hicle sothat itis available tothe
ne xt ow ner .If yo uha ve pur chased aused vehi‐
cle, please sendusthe"No tice ofPur chase of
Used Car"intheSer vice andGuar anteebookle t
or sim plycall theMer cedes- BenzCustomer 24
Generalno tes

Cer
tain inf ormatio nis simult aneousl ytransf er‐
re dto your smar tphon e.De pen dingon thetype
and integr ation, this inc ludes positiondata,the
da y/night modeandother gener alvehicle sta‐
tus es. Formor einf ormation pleaseconsult the
Oper ator's Manual oftheve hicle/inf otainm ent
sy stem.
This integr ation allowstheuse ofselect ed
smar tphon eapps, suchas navig ation ormusic
pla yerapp s.Ther eis no further interaction
be tween thesmar tphon eand theve hicle; inpar‐
ticular ,ve hicle datais no tdir ectl yaccessible.
The type ofadditional datapr ocessing isde ter‐
mined bythepr ov ider oftheapp being used.
Whic hse ttings youcan make,ifan y,depends on
th especif icapp andtheoper ating system of
yo ur smar tphon e. Onlin
eser vices Wi
reless netw orkconnection
If yo ur vehicle hasawir eless networkconn ec‐
tion, itenables datato be exc hang edbetween
yo ur vehicle andadditional systems. Thewire‐
less networkcon nect ionismade possible bythe ve
hicle's owntrans mitt erand recei veror by a
mobil eend device that youha ve brought intoth e
ve hicle, forex am ple, asmar tphon e.On line func‐
tio ns can beused viathewir eless networkcon ‐
nect ion.This includes onlineservices andappli‐
cation s/apps prov ided toyouby themanuf ac‐
tur eror by other prov ider s.
Manu factu rer's services
Re garding themanuf acturer'sonline services,
th eindividual functionsar edescr ibedbythe
manuf acturerinasui table place, forex am ple, in
th eOper ator's Manual oron themanuf acturer's
we bsit e,wher eth ere leva nt data protect ion
inf ormation isalso given. Personal datama ybe
used forth epr ov ision ofonlin eser vice s.Dat a
ar eexc hang edvia asecur econn ection, suchas
th emanuf acturer'sdesignat edITsystems. Any
per sonal datawhic har ecollect ed,processed
and used, other than forth epr ov ision ofser v‐
ices, isdone soexc lusiv elyon thebasis ofleg al
per mission. Thisisthecase, forex am ple, fora
leg ally prescr ibed emerg encycallsystem, acon ‐
tra ctual agreement orwhen consent hasbeen
giv en. Yo
ucan have ser vices andfunctions, someof
whic har esubject toafe e, activ ated ordeactiv a‐
te d. This excludes legallypr escr ibed functions
and service s,suc has an emer gency callsy stem.
Thir dpar tyser vices
If yo uuse onlineser vices from other prov ider s
(t hir dpar ties ),th ese services areth ere sponsi‐
bility ofthepr ov ider inqu estion andsubject to
th at prov ider's datapr otect ion conditions and
te rm sof use. Asage ner alrule, themanuf ac‐
tur erhas noinfluence onthecon tent
exc hang ed.
Fo rth is reason ,when services arepr ov ided by
th ird par ties ,please asktheser vice prov ider in
qu estion forinf ormation aboutthetype, extent
and purpose ofthecollect ionand useofper‐
sonal data. Data
protection rights Depen
dingonyour count ryor theeq uipment
and rang eof func tions ofyour vehicle aswellas
th eser vices youuse and theser vices onoffer,
yo uar een titled todiffere nt data protect ion
ri ghts. Further information ondat apr otect ion 34
Generalno tes

Ad
jus tingthe outsi de mir rors #
Press butt on3 or4 toselect theoutside
mir rorto be adjus ted. #
Press butt on2 toadjus tth eposition ofthe
mir rorgl ass.
Eng agin gth eout side mirrors #
Vehicles without electr icallyfo lding outside
mir rors:manu ally mo vetheoutside mirror
int oth ecor rect pos ition. #
Vehicles withelectr icallyfo lding outsidemir‐
ro rs:pr ess and holdbu tton 1.
Yo uwill hear aclic kand themir rorwil lau di‐
bl yclic kint opla ce. The outsi demir rorwil l
no wbe setto thecor rect pos ition. Au
tomatic anti-glar emir rors functio n &
WARNIN GRisk ofaci dbu rnsand poi‐
soning duetotheanti- glar emir rorelec‐
tr olyt e
Electr olytema yescap eif th eglass inan
aut omat icant i-glar emir rorbr eak s. The
electr olyteis hazardous tohealt hand
causes irrita tio n.Itmu stnotcome intocon‐
ta ct with your skin, eye s,respir ator yor ga ns
or clo thing orbe swallo wed. #
Ifyo uco me intoco ntact withelec tro‐
ly te ,obser vethefo llo wing:
R Imm ediat elyrinse theelectr olyte
fr om your skin wit hwa terand seek
medica latt ention.
R Ifelectr olyt ecomes intocont act
wit hyo ur eyes, immediat elyrinse
th em thor oughly withclean water
and seek medicalattent ion.
R Ifth eelectr olyt eis sw allo wed,
immediat elyrinse your mout hout
th or oughl y.Do notind uce vomiting.
Seek medica latt ention immedi ately .
R Immedia tely ch ang eout ofclo thing
whic hhas been contaminat edwith
electr olyt e.
R Ifan allergic react ion occurs, seek
medi calattent ion imm ediat ely. The
inside rear vie wmir rorand theoutside mir‐
ro ron thedr iver's side willautomatic allygo 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 lswi vel
do wn wardsin thedir ect ion ofthere ar wheel on
th efront passeng er'sside when:
R The parking position isstor ed (/ page12 9).
R Thefron t-pa ssenger mirror isselect ed.
R Reversege ar iseng aged. 12
8
Light andvisib ility

Ov
ervie wof climat econtr olsystems No
teson climat econtr ol An
interior airfilt er incom binat ionwithth epr e‐
fi lt er intheengine compartmen tmus talw aysbe
used sothat theair con ditionin gsy stem, pollu‐
tion leve lmon itor ing and theair filtration work
cor rectl y.Mak esur eth at thefilt er isins talled
cor rectl yand thefilt er housin gin theengine
com partmen tis closed correctl yus ing thecap
and alwaystightl ysealed wheninoper ation. Use
fi lt er sre comme ndedandapprove dby
Mer cedes-Ben z.Alw aysha ve ser vice workcar‐
ri ed out ataqu alif ied spec ialistwo rkshop. Ov
ervie wof theair condit ioning control
pa nel The
indic ator lam pson thebutt ons indicat eth at
th ecor responding functionisactiv ated. Contr
olpanel fordua l-zone automatic climatecon‐
tr ol with/wi thout statio naryheat er(exa mp le)
1 0082 Setsthete mp eratur e,lef t
2 008F Setstheair distribution
3 H Setstheair flow orswitc hesoffclimat e
cont rol
4 0058 Setsclimat econtr olto aut omat ic
(/ page13 2)
5 0064 Defrosts thewindshield 6
Vehicles withcont rolpanel fordua l-zone
au tomatic climatecontr ol(withou tst atio n‐
ar yheat er):008A callsuptheair con dition‐
ing menu
Ve hicles withcont rolpanel fordua l-zone
au tomatic climatecontr ol(with statio nary
heat er)or3-zo ne aut omat icclim atecon trol
(wit h/w ithout statio naryheat er):! calls
up theair con ditionin gmenu, switchesresid‐
ual heat on/of f(/ page13 4)
7 006C Switches there ar wind owheat er
on/of f
8 Vehicles withcont rolpanel fordua l-zone
au tomatic climatecontr olwithout statio nary
heat er:0 switches sync hroniz ation
on/ off(/ page13 3)
Ve hicles withcont rolpanel for3-zone auto‐
matic climatecontr olwithout statio nary
heat er:005A switches theA/C function
on/ off(/ page13 2)
Ve hicles withast atio naryheat er:003B
swit ches thest atio naryheat eron/of f
9 0072 Switches air-recir culation modeon/off
(/ page13 4) Cl
ima tecontr ol13
1

A
Vehicles withcont rolpanel fordua l-zone
au tomatic climatecontr ol:005A switches
th eA/C function on/off(/ page13 2)
Ve hicles withcont rolpanel for3-zone auto‐
matic climatecontr ol:008F adjus tstheair
dis tribution, right
B 0082 Setsthete mp eratur e,right
Re ar oper ating unitinvehicl eswith contr ol
panel for3-zo neaut omati ccl imat eco ntr ol 1
Setsthete mp eratur e
2 Displa y
3 Setsthete mp eratur e Oper
ating theclima tecont rolsy stem Switc
hingclima tecont rolon/of f #
Toswitc hon: setth eair flow toleve l1 or
higher usingtheH button. #
Toswitc hof f:se tth eair flow toleve l0 using
th eH button.
If climat econ trol isswitc hedoff,th ewindo ws
ma yfo gup mor equ ickl y. Swi tchcli mat econtr ol
of fonly briefly. Switc
hingtheA/C function on/of fusing the
air conditio ningco ntr olpanel The
A/C function heats,cools anddehu midifies
th eve hicle's interior air. #
Press the005A button.
Switc hof fth eA/C function onlybr ief ly;ot her‐
wise, thewindo wsmayfo gup mor equ ickl y.
Con densation maydr ip from theunder sideof
th eve hicle when cooling modeisactiv e.This is
no tindicativ eof amalfunction. Calling
uptheair condit ioning menu Calling
uptheair condit ioning menuusing
th emu ltim edia system #
Sele ctone ofthete mp eratur edispla ysatthe
lo we redg eof themedia display. Ac
tiv atin g/deac tivatin gthe A/Cfunc tionvia
the multi mediasy stem The
A/Cfun ction heat s,coo lsand dehumi difies
th eve hicle's interior air. #
Call uptheair -co ndition ingmenu
(/ page13 2). #
Select FirstRowofSeats . #
Select A/C. Se
tting climat eco ntr olto aut omatic mode In
automatic mode, these tte mp eratur eis con ‐
tr olled andmaint ained atacon stant leve lby the
air suppl y. #
Press the 0058 button. 13
2
Climat eco ntro l

#
Toswitc hto manu almode :pr es sth e H
or 008F button. Climat
est yle Clim
atest yle fun ction
The follo wing climat est yles areav ailable inaut o‐
mat icmode :
R FOCUS: highairflow ,slight lycooler setting
R MEDIUM: mediumairflow ,st andar dse tting
R DIFFUSE: low air flow ,slight lywa rmerand
dr aft-fr ee setting
Ad jus tingthe climat emode settin gs #
Callup theair con ditionin gmenu
(/ page13 2). #
Select FirstRowofSeats orSecond Rowof
Seats. #
Callup theCLIMATE MODEmenu. #
Select aclimat est yle. Se
tting theair distribut ion #
Call uptheair con ditionin gmenu
(/ page13 2). #
Select arow ofseats. #
Tosetth eair distribut ion: selec t0061,
009C or009B. #
Setth eair flow .
% Severalair distribution option scan beselec ‐
te dat thesame time,forex am ple tosetth e
cli mat econtr olforth ewindshield andthe
fo ot we llssimult aneousl y.
The 0061 climat econt rolfo rth ewindshield
can onlybe select edforth efirs tse at row . Ac
tiv atin g/deac tivatin gthe climat eco ntr ol
syn chronizat ionfunction viatheair condi‐
tioni ngcontr olpa nel Climat
econ trol can besetcen trall yusing the
sync hronization function.Thetemp eratur eand
air distribution settings forth edr iver's side will
be adop tedaut omatic allyfo rth efront passeng er
side. #
Press the0 button.
The sync hroniz ation function willbedeactiv ated
if th ese ttings forone oftheot her climat econ‐
tr ol zones arech ang ed. Ac
tiv atin g/deac tivatin gthe climat eco ntr ol
syn chronizat ionfunction viathemu ltim edia
sy stem Climat
econ trol can besetcen trall yusing the
sync hronization function.Thedriver's settin gs
fo rte mp eratur e,air quant ityand airdistribut ion
ar eadop tedaut omatic allyfo rall clima tezone s. #
Callup theair con ditionin gmenu
(/ page13 2). #
Select FirstRowofSeats . #
Select SYNC. Re
mo ving conde nsatio nfrom the windo ws Wi
ndo wsfogg ed up ontheinsid e #
Press the0058 button. Climat
econ trol 13
3

#
Ifth ewindo wscontinu eto fogup: press the
0064 button.
Wi ndo wsfogg ed up ontheout side #
Swit chon thewindshield wipers. #
Press the 0058 button. Switc
hingair-recir culation modeon/off #
Press the0072 button.
The interior airwill berecir cul ated.
Air -reci rculati onmod eaut omat icallyswit ches to
fr esh airmode afte rsome time.
% Ifair -recir cula tion mode isswitc hedon,the
windo wsmayfo gup mor equ ickl y. Swi tchon
ai r-re cir cul ation mod eonly briefly. Switc
hingthere sidual heatonoroff Re
quirement s:
R The vehicle ispar ked.
It is possible tomak euse ofthere sidua lheat
fr om theengine tocontinu ehea ting orventil at‐ ing
thefront com partmen tof theve hicle for
appr oximat ely30 min utes. #
Toswitc hon: press the! button.
Re sidua lheat isswitc hedoffaut omaticall y. Ac
tiv atin g/deac tivatin gio ni zatio n Ioni
zationimpr oves thequ alit yof theve hicle's
int erior air.Ionization oftheint erior airisodor‐
less. #
Call uptheair con ditionin gmenu
(/ page13 2). #
Select AirQua lity. #
Select IONIZAT ION. Fr
ag rance system Se
tting thefrag rance system
Re quirement s:
R Automatic climatecontr olisacti vated.
R The glove boxis closed. The
fragr ance system distribut esapleasant fra‐
gr ance thro ughout theve hicle interior from afla‐
con located intheglov ebo x. #
Call uptheclimat econ trol menu
(/ page13 2). #
Select AirQua lity. #
Select AIRFRESHENER . #
Keep pressing untilthedesir edintensit yis
re ac hed.
Inser tingor remo ving the flacon ofthefra‐
gr ance system &
WARNIN GRisk ofinju ryfrom liquid per‐
fume
If ch ildr enopen theflacon ,th ey cou lddrink
th eliq uid perfume oritcould come intocon ‐
ta ct with their eyes. #
Donotlea vechildr enunat tende din the
ve hicle. #
Consult adoct orimmediat elyifliq uid
per fume hasbeen drunk . 13
4
Climat eco ntro l

%
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 ECOstar t/ stop funct ionisno tav ailable
in all drive pr og rams, depe nding onthe
engine. Observethest atus displa yin the
multifu nctiondisplay fo rth is.
The engin eis switc hedoffaut omat icallyin 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.
R Vehicl eswith a48 Von-b oard electrical
sy stem: youdepr essthebr ak epedal when
tra veling atalow speed.
If th esy stem has detected one ofthefo llo wing
situat ions,th eengine willnotst op:
R Youstop atast op sign andther eis no vehi‐
cle infront ofyou. R
The vehicle that stopped infront ofyou
st ar ts up again.
R Youman euver,tur nth esteer ing wheel
shar plyor eng agere ve rsege ar.
% Ifth esy stem detects anintellige nt stop
inhibit or,e.g. ast op sign, theengine willnot
st op.
If yo uact ivat eth eHOLD function oreng age
th epar kposition 005D,theengine canbe
switc hedoffin spit eof an intellig entstop
inhibit or.
The engine isrestar tedaut omatic allyif:
R Youen gage trans missi on positio n005B or005E.
R Youdepr esstheacceler ator pedal.
R Anautomatic enginestar tis requ ired bythe
ve hicle.
R Youre lease thebr ak epedal.
R Vehicl eswith a48 Von-b oardele ctrical
sy stem:
- Youre lease thebr ak epedal onado wnhill
gr adient andtheve hicle does notro ll. -
The vehicle rolls on ado wnhill gradien t
and does notaut omat icallyent erglide
mode at15 mp h(2 0km/h).
EC Ostar t/ stop funct ionsymbols inthemulti‐
func tion displa y:
R The 00D6 symbol (green) appear swhen the
ve hicle isat ast ands till:th eengine was
switc hedoffby theEC Ostar t/ stop funct ion.
R The 00D5 symbol (yello w)appear swhen the
ve hicle isat ast ands till:no tall vehicle condi‐
tions foran engine stop have been met.
R Neit herthe00D6 nor00D5 symbol appears
when theve hicle isat ast ands till:an intelli‐
ge nt stop inhibit orwa sde tected, e.g. ast op
sign.
R The s symbol appears:theEC Ostar t/
st op funct ionisdeactiv ated orther eis amal‐
func tion.
If th eengine wasswitc hedoffby theEC Ostar t/
st op funct ionand youlea vetheve hicle, awa rn‐
ing tone sou nds and theengine isno tre star ted.
In addition, thefo llo wing displa ymess age
appear sin themultifunc tiondispla y: 14
6
Driving and parking