2023 MERCEDES-BENZ GLC COUPE ECO mode

The
wearpatt erns on thefront and rear wheels
di.er :
R Front wheels wearmor eon thetir eshoulder
R Rear wheels wearmor ein thecent erofthe
tir e
Do notdr ive wit htir es that have toolittle tread
dep th.This signi/ can tly re duces traction onwet
ro ads (hydr oplan ing).
On vehicles that have thesame sizefront and rear
wheels, rotate thewheels accordingtotheint er-
va ls in thetir emanuf acturer'swarrant ybook in
yo ur vehicle docume nts. Ifth is is no tav ailabl e,
ro tate thetir es every3,000 to6,000 miles
(5,000 to10,000 km),depending onthewe ar.
Ensu rethat thedir ection ofrotation ismai n-
ta ined. NNo o
t t
es on st es
on stor or
ing wheels ing
wheels When
stor ing wheels, observethefo llo wing notes:
R ATer remo vingwheels, stor eth em inacool,
dr yand prefer abl ydar kplace.
R Protect thetir es from cont actwithoil, grease
or fuel. OvOv
er er
vie vie
wof t w
of the tir he
tire-c e-c
hang hang
et e
tool kit ool
kit *
N NO O
TE TE
Mer cedes- AMGvehicles #
Obser vetheno tesin theSupplement.
Yo ucould other wise failto recogn ize
dang ers. Apar
tfr om some countr y-speci/c variant s,vehi-
cles areno teq uipp edwithatir e-c hang eto ol kit.
Fo rmor einf ormation onwhic htir e-c hanging tools
ar ere qu ired and appr ovedfo rper form ing awheel
ch ang eon your vehicle, consu ltaquali/ed spe-
cialis two rkshop.
Yo ure qu ire th efo llo wing tools, fore xa mp le,to
ch ang eawheel:
R Jack
R Choc k
R Lugwr enc h
R Alignme ntbolt
The tire-c hangeto ol kit islocat edunder thecar go
0oor . %
Depending onthemodel, thetir ech ang eto ol
kit maybe locat edinother posit ionsund er
th ecar go0oor . 1
Jack
2 Ratche tfo rjac k
3 Lugwr enc h
4 Folding choc k Wheels
andtires
329 329

#
Only/ll thefuel tank tohalf fullwit h
unl eaded regula rga solin eand re/ll as
soon asposs iblewit hun lea ded premi um
gr ade gasolin e. #
Donotdr ive at themaximum design
speed. #
Avoid sudden accelerationandengin e
speeds over3000 rpm. Fu
rther informatio non fuel isavailabl eat thefo l-
lo wing locations:
R Ataga sst ation
R Ataqu ali/ed special istwo rkshop
R Onthehttps://www .mbusa.com(USAonl y)
Inf Inf
or or
mation onadditiv mation
onadditiv esing es
ingasoline (v asoline
(vehicles with ehicles
with
g g
asoline engine) asoline
engine)
Obser vetheno teson oper ating0uids
(/ page342).
* NO NO
TE TE
Damag efrom use ofunsu itable
addit ives Ev
en small amoun tsof thewrong additivema y
lead tomalfun ctionsoccurring. #
Onlyadd cleaning additives recommen -
ded byMer cedes-Be nztothefuel. Mer
cedes-Benz recommen dsthat youuse brand-
name fuelswithadditiv es.
In some countr ies,thefuel availabl ema yno tha ve
su1cie ntaddit ives. Deposi tscould buildup inthe
fuel injection system asare sult .In this case, in
consult ationwithaMer cedes-Benz Service Cen-
te r,mix thefuel withth ecleaning additivere com-
mende dby Mer cedes-Be nz.Obs erve theno tes
and mixin gra tios indica tedon theta nk .
T T
ank cont ank
cont entand fuelr ent
and fuelrese rve eser
ve
To t To
tal fuel t al
fuel tank capacit y ank
capacit y Mod
el Mod
el
GL C300 4MATIC 17.4ga l(66.0 liter s) RR
eser v eser
ve fuel t e
fuel tank ank
ModelModel
GL C300 4MATIC 1.9gal(7.0 liter s) Engine
oil Engine
oil NNo o
t t
es on engine oil es
on engine oil
Obser vetheno teson oper ating0uids
(/ page342). *
N NO O
TE TE
Eng inedamag ecaused byan inco r-
re ct oil /lter,incor rect oil oradditi ves #
Donotuse engin eoils oroil /ltersot her
th an those whic hmee tth especi/c ations
necessar yfo rth epr escr ibed service
int erva ls. Te
ch nica ldat a
345 345

#
Donotalt er theengine oiloroil /lter in
or der toachie velong erchang eint erva ls
th an prescr ibed. #
Donotuse addit ives. #
Have theengine oilchang edaTer the
pr escr ibed interva ls. Mer
cedes-Benz recommen dshavin gth eoil
ch ang edataqu ali/ed special istwo rkshop.
Onl yuse engineoils appr ovedfo ryo ur vehicle by
Mer cedes-Be nz.
Qua lityand capac ityofengine oil Qua
lityand capac ityofengine oil
Engine oil Engine
oilspe ci/cation spe
ci/cation Mode
l Mode
l MB-Fr MB-F
reig eig
abe orMB- abe
orMB-
Appro v Appro
val al
GL C300 4MATIC 229.51,229.5 2,
229.6 1,229.7 1,
229.7 21)
1) recommended forlo we stpos sible fuel consu mption (lowe stSA E
viscosity classineac hcase; observepossible restr ictio ns ofthe
appro vedSA Eviscosity classes) To
achie vethelowe stpo ssible fue lco nsum ption,
it is recommen dedtouse theengine oilspeci/c a-
tion smar kedin theta ble forth elowe stSA Evis-
cosity class.Possible restr iction sof theappr oved
SA Eviscosity classesmustbeobser ved.
Engin eoil Engin
eoil /lling /lling
capacity capacity
ModelModel
Capacity Capacity
GL C300 4MATIC 6.3USqt(6.0 liter s) The
speci/ed /llingcapacity refers to an oil
ch ang ewit hth eoil /lter. NNo o
t t
es on br es
on brak ak
e e
0uid 0uid
Obser
vetheno teson oper ating0uids
(/ page342). &
W W
AR NIN G AR
NIN GRisk ofan acciden tdue to
va por pockets form ing inthebr ak esy stem
The brak e0uid const antlyabsorbs moisture
fr om theair .This lowe rstheboiling pointof
th ebr ak e0uid. Ifth eboiling pointistoolow, va
por pockets ma yfo rm inthebr ak esy stem
when thebr ak es areapplied hard.
This causes thebr aking e.ect tobe impair ed. #
Have thebr ak e0uid rene we dat the
speci/ed interva ls. Ha
ve thebr ak e0uid regula rly re placed ataqu ali-
/ed special istwo rkshop.
Onl yuse abr ak e0uid approvedby Mer cedes-
Benz accor ding toMB-F reigabe orMB- Appr oval
331. 0. Coolan
t Coolan
t NNo o
t t
es on coolan t es
on coolan t
Obser vetheno teson oper ating0uids
(/ page342). &
W W
AR NIN G AR
NIN G‑Risk of/reand injuryfrom
ant ifre eze
If antifr eeze comes intocont actwithho tcom-
ponent partsintheengine compartment, it
ma yignit e. 346346
Te
ch nica ldat a

#
Allo wtheengine tocool down before
addin ganti freeze . #
Mak esur eth at no ant ifre eze spills out
ne xt to the/ller opening. #
Thor oughl yclean o.anyantifr eeze from
com ponent partsbef orestar ting the
ve hicle. *
N NO O
TE TE
Damag ecaused byincor rect cool-
ant #
Onlyuse coolant that has been premix ed
wit hth ere qu ired antifr eeze protection.
Inf ormation oncoolant isavailabl eat thefo l-
lo wing locations:
R IntheMer cedes-Benz Speci/cation for
Oper ating Fluids 320.1
- Athttp s://be vo.mer cede s-benz.c om
- IntheMer cedes-Benz BeVoapp
R Ataqu ali/ed special istwo rkshop *
N NO O
TE TE
Overheati ngathigh outsi detemp er-
atur es If
an inappr opriatecoolant isused, thecooling
sy stem isno tsu1cien tly pr otect edagainst
ov erheating andcorrosion athigh outsi de
te mp eratur es. #
Onlyuse coolant approvedfo r
Mer cedes-Be nz. #
Obs erve theinst ruction sin the
Mer cedes-Be nzSpeci /cation sfo rOper -
ating Fluids 320.1. Ha
ve thecoolant regula rly re placed ataqua li/ed
specialist workshop.
Pr opor tionofant ifre eze concentr atein thecool-
ing system:
R Aminimum of50% (antifr eezeprotection down
to about -35°F(-37 °C))
R Amaximum of55% (antifre eze protection
do wn to-49°F (-45°C)) Cool
ant Cool
ant/lling /ll
ing q q
uantity uantity
Engine cooling cir Engine
cooling circuit cuit
(/llin g (/
llin gcap acitywit cap
acitywit hhea t- h
hea t-
ing) ing)
ModelModel
Capacity Cap
acity
GL C300 4MATIC 13.7USqt
(13.0 liter s) NNo o
t t
es on winds hieldw es
on winds hieldwas her as
her 0uid 0ui
d Obs
erve theno teson oper ating0uids
(/ page342). &
W W
AR NIN G AR
NIN G‑Risk of/reand injuryfrom
wind shield washer conce ntrate
Wi ndsh ieldwasher conce ntrate ishighl y0am-
mable. Itcould igniteif it comes intocont act
wit hho tengine component partsor the
ex haus tsy stem. #
Mak esur eth at no wind shield washer
conce ntrate spill sout next to the/ller
opening. Te
ch nica ldat a
347 347

Heigh
twh en ope ned andheadr Heigh
twh en ope ned andheadroom oom
Mode
l Mode
l 1 1
Heigh t Heigh
t
wh en ope ned wh
en ope ned 2 2
Hea dr Hea
droom oom
GL C300
4MA TIC 87.9
in
(2 232 mm) 77.0
in
(1 956 mm) VV
eh icledim ensions eh
icledim ensions GLGL
C300 4MA C
300 4MATIC TIC
Ve hicle length1 86.3in(4731 mm)
Ve hicle widthincl ud-
ing outs idemirrors 82.5
in(2096 mm)
Ve hicle height 63.9in (1622 mm)
Wheel base 113.1in (2873 mm)
Tu rning circle 38.71T(11.80 m) WW
eights andloads eights
andloads Bear
inmind that items ofoptio nal equipme nt
incr ease thecurb weight andreduce thepa yload. Ve
hicle-spe ci/cweight information canbefound
on theve hicle identi/cation plate. Maxim
umdesig nspeeds Maxim
umdesig nspeeds NNo o
t f t
for Mer or
Mer cedes- cedes-
AMGv AM
Gvehicle s: ehicle
s:
Missi ngvalues werenotav ailabl eat thetime of
going topress.
Maximum per Maximum
permissible speed missible
speed
All models TT
r r
ailer hitch ailer
hitch GenerGener
alno t al
no tes on t es
on the tr he
trailer hitch ailer
hitch Modi/ca
tionsto thecooling system maybe nec-
essar y,depending ontheve hicle model .Re tro/t-
ting atrai le rhi tc his pe rm issible onlyif ato wing
capacity isspeci/ed inyour vehicle docume nts.
Fu rther informatio ncan beobt aine dat aquali/ed
special istwo rkshop. 350350
Te
ch nica ldat a

DisplaDispla
ymessag y
messag es P es
Possible causes/conseq ossible
causes/conseq uencesand uences
and0050 0050
Soluti ons Soluti
ons
ç
Suspende d *I
fyo udepr esstheacceler ator pedal beyond these tting ofActiveDist ance AssistDIS TRONI C,thesy stem will switc hto
passiv emode (/page172 ).
ç Off *A
ctiv eDis tance AssistDIS TRON ICwa sdeacti vated. Ifawa rning tone alsosou nds, ActiveDist ance AssistDIS TRONI C
has deactivated aut oma tically (/ page175) .
Act ive Dist ance Assist Cur-
rent lyUnavailable See
Operator 'sManual *A
ctiv eDis tance AssistDIS TRON ICistemp orarily una vailable.
The ambient conditions areoutside thesy stem limits (/page172).
As soon astheambient conditions arewit hin thesy stem limits, thesy stem will become availabl eag ain. #
Drive on car efull y.
or #
Ifth edispla ymessag edoes notdisappear ,st op theve hicle inaccor dance withth etra1c conditions andrestar t
th eve hicle.
Active DistanceAssistInop -
era tive *A
ctiveDis tance AssistDIS TRON ICisma lfunct ioning .
Ot her driving systems anddriving safety systems mayals obe mal functioning. #
Drive on car efull y. Displa
ymessag esand warning/in dicatorlam ps
377 377

AIR
BOD AIR
BOD YC Y
CON TR ON
TROL OL
Fu nctio n........... ..................................... 196
Se tting .......... .......... ...............................197
Air conditioning menu Air
conditioning menu
Air distr ibution..... .................................. 131
Calling up.............................................. 130
Climat econtr ol......... .............................131
Ionization...... ......................................... 132
Air dis Air
distr tr
ibution ibution
MBUX multimedia system ....... ................131
Se <00550055004A004F0048000F000F000F000F000F000F000F000F000F000F000F
000F> .......................................129
Air fr Air
freshener syst eshener
system em..
....... ....... .................... 132
Air inle t Air
inle t........... .............................................278
Air pr Air
pressur e essur
e........ ......................................... 307
Air suspension Air
suspension, AIRBOD YCO NTR OL............1 96
Air v Air
vents ents
Se <00550055004A004F0048000F000F000F000F000F000F000F000F000F000F000F
000F> .......................................134
Air/w Air/w
at at
er duct er
duct.. ...........................................278
Airbag Airbag,
Occupa ntsaf ety
Au tomatic front passeng erairbag shut
o..... ........................................................ 44
Fr ont airbag (driver ,fr ont passeng er)........ 41
Inst allation locations ................................ 41 Knee
airbag... ........ .................................. 41
Ov ervie w.... .............................................. 41
PA SSENGE RAIR BA Gind icat or lamp s...... 46
Pr otection.... ............................................ 42
Side airbag...... ........................................ 41
Wi ndo wcur tain airbag .............................. 41
Air0 ow Air
0ow
Se tting .... ................ ............................... 129
Ala r Ala
rm syst m
system em,
ATA<000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F
000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F
000F000F000F000F000F000F000F000F000F> 83
All-wh eeldr All-wh
eeldrive iv
e, 4MA <0035002A0024000F000F000F000F000F000F000F000F000F000F000F000F000F
000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F
000F000F000F> 152
Ambient lighting Ambient
lighting<000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F
000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F
000F000F000F000F000F000F000F000F000F000F000F> 122
Animals Animals
Pets intheve hicle .................................... 62
An ti-loc An
ti-loc kbr k
br aking syst aking
system em
,AB S... .................. .1 64
An ti-t An
ti-theT heT
alar alar
msyst m
system em
,ATA <000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F
000F000F000F000F000F000F000F000F000F000F000F> 83
An ti-t An
ti-th eT heT
prot pr
otection ection
,AT A
Immobi lizer.............................................. 83
App rov Appro
val numb ers al
numb ers............ ............................340
Apps Apps
Mercedes mecalls. ................................253
Mer cedes meconnect. .......................... 256
Assist Assist
ancesyst ance
systems ems
....... ...............................163 ASS
YS ASS
YSTPL T
PL US US
Batt erydis conne ctionper iods............ ....272
Ser vice interva ldispla y......... ................. 271
Ser vice requ irements....... ...................... 271
ATA ATA
Deactiv atingthealar m.<000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F
000F000F000F000F000F000F000F000F000F000F000F000F> 84
Fu nctio n........... .......... ............................. 83
Int erior protection ....................................8 5
To w- awa yalar m.<000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F
000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F
000F000F000F000F000F000F> 84
To w- awa ypr otection ................................ 85
AT ATA A
(ant i-t (a
nt i-the T heT
alar ala
rm syst m
system) em)
Int erior protection function ....................... 85
A A
TTENTION ASSIST TTENTION
ASSIST, Attention assist ant
Fu nctio n........... .......... ........................... 169
Se tting .......... .........................................170
A A
ut ut
hor hor
ized Mer ized
Mercedes-Benz Ser cedes-Benz
Service Cent vice
Cent er er.....
26
A A
ut ut
hor hor
ized w ized
wor k or
kshop shop.
.....................................26
A A
ut ut
omatic carw omatic
carwash ash
....... ....... ........................278
A A
ut ut
omatic carw omatic
carwash mode ash
mode ............................ 278
A A
ut ut
omatic climat omatic
climatecontr e
contr ol ol
....... ..................... 131
A A
ut ut
omatic dist omatic
distance contr ance
control ol
,Ac tiveDis-
ta nce AssistDIS TRON IC, DIS TRON IC.......... .172
A A
ut ut
omatic dr omatic
driving lights iving
lights........ ........................117 418418
Inde
x

To
pTe ther. ..... ..........................................56
Childr Childr
en en
Av oiding dangersin theve hicle ............ ....5 0
Bas icinstr uctions.. .................................. 49
Spec ialse at bel tre tract or<000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F
000F000F000F000F000F000F000F000F> 54
Choc k Choc
k<000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F
000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F
000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F
000F000F000F000F000F000F000F000F000F000F> 329
Clea nv Clea
nvar ar
nish nish<000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F
000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F
000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F>
280
Clea ning Clea
ning
Air/w ater <0045005600440055000F000F000F000F000F000F000F000F000F000F000F000F
000F000F000F> <000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F
000F000F000F000F000F000F000F000F> 278
Au tomatic carwash...............................2 78
Decor ativefo il...... .................................. 281
Pa int.... ..................................................280
Po we rwa sher s.<000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F
000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F
000F000F000F000F000F000F> 279
Ve hicle interior ....................................... 283
Ve hicle parts... ... .................................... 282
Clean ingcar Clean
ingcarpe pe
ts ts
... ... .................................... 283
Clean ingseat cov Clean
ingseat cover s er
s.... ................................ 283
Clim at Clim
atecont r e
cont rol ol
A/ Cfunct ion.. ....................................... 131
Ac tivating/dea ctivating <000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F
000F000F000F000F000F000F000F000F000F000F> 130
Ac tivating/dea ctivating theA/C func-
tion (contr olpanel).. ...............................1 30
Ac tivating/dea ctivating thesync hro-
nization function (controlpanel)....... ......1 31 Au
tomatic control... ...............................1 31
Calling uptheair conditioning menu.......130
Climat esty lefunction ............................ 131
Contr olpanel for3-zone automatic
climat econtr ol....... ................................129
Contr olpanel fordual-zone automatic
climat econtr ol....... ................................129
Defr ostin gth ewindshield... .................... 129
Fi lling capac ityforre frig er ant and
PA Goil.. .................................................3 49
Fr ag rance system .......... ........................132
Fr ont airvents.... .......... ..........................134
Ins erting/r emoving the0aco n(fr a-
gr ance system) ...................................... 133
Ioni zation ............... ................................ 132
No tes... .................................................. 129
Re ar passen gercom partment airvents .. 134
Re frig er ant .............................................3 48
Re mo vingconden sationfrom thewin-
do ws <000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F
000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F
000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F
000F000F000F000F000F000F> 132
Re sidual heat......................................... 132
Se tting (MB UXmult imedi asy stem) ......... 130
Se tting theair distr ibution... ................... 129
Se tting theair0o w...... ............................ 129
Se tting theclimat esty le...... ................... 131 Se
tting theve hicle interior temp era-
tur e..... ............... ................................... 129
Switc hingair-recir culation mode
on/ o...... ..............................................1 32
Switc hingthere ar wind owheat er
on/o. ................................................... 129
Syn chronizati onfuncti on.......... ..............132
Ve ntila ting withcon venienc eope ning....... 78
Clim at Clim
ates e
sty ty
le le
Fu nctio n........... ..................................... 131
Se tting .......... .........................................131
Clo t Clo
thes hook hes
hook. ............................................... 107
C C
OC paper s OC
paper s, CER TIFIC ATEOF CONFORM -
IT Y.. ...................... .......................................3 38
Coc Coc
kpit kpit
Dash board.<000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F
000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F
000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F> 6
Co. ee Co.
eecup symbol cup
symbol, ATTEN TIONASSIS T........ 169
Col lision det Col
lision detecti on(par k ecti
on(par ked v ed
vehi cle) ehi
cle)
Inf orma tion.. ......... .................................161
Com bination switch Com
bination switch
Ligh ts............ ........................................117
Wi ndsh ieldwiper.......... ..........................123
Com Com
ponent-spe ci/c pon
ent-spe ci/cinf inf
or or
ma tion ma
tion... .......... ......340 Ind
ex
421 421