cooling MERCEDES-BENZ GLS 2020 Owners Manual

#
Tofold thebr ac ke tar m out: press release
butt on2. Opening
orclosing thecup hold ersin the
re ar armr est *
NO
TEDama getothere ar armr estdue to
body weight When
folded out,there ar armr estcan be
damag edbybody weight . #
Donotsit orsuppor tyo urself onthe
re ar seat armr est. *
NO
TEDama getothecup holder When
there ar armr estis folded backth ecup
holder couldbecome damaged. #
Onlyfo ld there ar armr estbac kwhen
th ecup holder isclosed. The
cup holder sin there ar armr estar eav ailable
fo rall vehicles exceptMer cedes- Maybac hve hi‐
cles. %
Depending onitsequipment, your vehicle
will have are ar armr estwit hacup holde r. #
Toopen: press cup holder 1or2.
Cup holder 1or2 will extend automati‐
cally . #
Toclose: pushcupholde r1 or2 bac k
unt ilit eng ages. Swit
ching thecooling orheat ingfunction for
th ete mp eratur e-cont rolled cup holder onor
of f &
WARNIN GRisk ofinju ryby touc hin gth e
heating elements
The cup holder's heatingelements maybe
ve ry hot.
Yo ucan burnyo urself onthem. #
Donotto uc hth ecup holder's hotheat‐
ing element s. #
Ensur eth at no childr encan access the
cup holder 'sho thea ting eleme nts. #
Neverlea vechildr enunat tende din the
ve hicle. *
NO
TEDama getoobject sin thete mp era‐
tur e-co ntro lled cup holder If
yo uplac eobj ect sint oth ete mp eratur e-
con trolled cupholder ,th ey ma ybecome
dama ged. 14
4
Sea tsand stow ing

cle
an it.Afterdoing so,leavethelid open fora
time.
The refrig er ator boxwil lre duce itscooling capa‐
city orswitc hof fin thefo llo wing cases :
R Tooman yelectr icalconsumer sar etur ned
on.
R The star terbatt eryis no tsuf ficie ntly
ch arge d.
If th is isthecase, theindicat orlam pswill flash
on thebutt onforswitc hingthere frig er ator box
on and off.The cooli ngfunction willau tomati‐
cally switc hbac kon assoon asther eis suf fi‐
cie ntvoltag e.
% Toinstallth ere frig er ator boxin thecar go
com partmen tor remo veit,please contact a
qu alif ied spec ialistwo rkshop. Ex
am ple: vehicles withindividual rear seat s #
Vehicles with5-seat ervariant :fo ld do wn the
re ar armr est. #
Pull thehandle ofstow agebo x1 and fold
do wn theco verof stow agebo x2. Ex
am ple: vehicles withindividual rear seat s #
Toopen: pullthehandle ofrefrig er ator box
1 and fold do wn theco verof there frig er a‐
to rbo x. #
Toswitc hon: press butt on2 repeat edly
until anindicat orlam p(lo wcooling )lights up
or twoindicat orlam ps(high cooling )light up. 15
0
Sea tsand stow ing

%
Ifclimat econtr olisswitc hedoff,th ewin‐
do ws mayfo gup mor equ ickl y. Swi tchof f
cli mat econtr olonly briefly. Switc
hingtheclima tecont rolin there ar
passe nger comp artment on/off #
Press butt on5.
% When climatecontr olinthesecon dseat row
is switc hedoff,th eindicat orlam pis activ a‐
te dand OFF issho wnonthere ar displa y. Switc
hingtheA/C function onoroffvia the
cont rolpan el The
A/Cfunc tion heats ,cools anddehumidif ies
th eve hicle's interior air. #
Press the0056 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 ta sign that ther eis amalfunct ion. 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 con ditionin gmenu
(/ page17 3). #
Select FirstRo wof Sea ts. #
Select A/C .
Depe nding on thepr ev ious status ,th efunc ‐
tion isactiv ated ordeactiv ated. Se
tting climat econtr 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. #
Toswitc hto manu almode :pr es sth e 0058
butt on.
In aut omatic mode,youcan choose between five
dif fere nt airqu ant ities usin gth e H button.
Au tomatic mode isretained. Au
tomatic allyco ntr olling the climat eco ntr ol
in the rear passe nger comp artment In
automatic mode, these tte mp eratur eis regu‐
lat ed bythete mp eratur eof thedispensed air
and theair flow . #
Press the0058 button(/ page17 2). Ov
ervie wof air distributio nse ttings The
symb olsonthedispla yindicat ewhic hve nts
th eair flow isbeing direct edthro ugh:
0061 De
fros terand side airvents
009C Ce
nter and side airve nts
009B Fo
otwe lland side airvents
009F Ce
nter,si de and foot we llve nts Cl
ima tecontr ol17
3

#
Mak esur eth at mar kedspace 2isem pty. #
Remo veSmar tKey 1 from theke yring. #
Place Sma rtKe y1 inmar kedspace 2next
to symbol 3.
The vehicle willstar taf te ra shor ttime.
If yo ure mo veSmar tKey 1 from mar ked
space 2theengine continues running .Fo r
fur ther vehicle star ts howe ver,Smar tKey 1 mus
tbe locat edinmar kedspace 2next to
th esymbol 3during theent ire jour ney. #
Have Smar tKey 1 checkedat aqu alif ied
spec ialistwo rkshop.
If th eve hicl edoes notst ar t: #
Place SmartKey 1 inmar kedspace 2and
lea veitth er e. #
Depr essthebr ak epedal andstar tth eve hi‐
cle using thest ar t/ stop butt on.
% Youcan also switchon thepo we rsupp lyor
th eignition withth est ar t/ stop butt on. St
arting theve hicl evia Remo teOnline serv‐
ices Cooling
orheating theve hicl eint erior before
co mmenci ngyour jour ney
% This function isno tav ailable inall coun tries.
If yo ustar tth eve hicle viayour smar tphon e,the
pr ev iousl yselec tedair con dition ingadjus tment
is activ e. En
sur eth efo llo wing beforest ar tin gth eengine:
R The legalstipulation sin thear ea wher eyo ur
ve hicle ispar kedallo wengin est ar tin gvia
smar tphon e.
R Itis saf eto star tand runth eengine where
yo ur vehicle ispar ked.
R The fuel tank issu fficien tly filled.
R The star terbatt eryis suf ficie ntly charge d.
% Youcan also setth ete mp eratur ewit hyo ur
smar tphon e.Info rm atio non Mer cedesme
con nectand other services: https://
www .mercedes.me
This funct ionisno tav ailable forall model s.
Char ging thebat tery bef orecommencing
yo ur jour ney
% This function isno tav ailable inall coun tries.
If th eve hicle batteryis disc harged, youre cei vea
messa geon your smar tphon e.Youcan then
st ar tth eve hicle withth esmar tphon eto charge
th ebatt ery. The vehicle isaut omaticall y
switc hedoffaf te rte nminu tes. Dr
iving andparking 18
3

Dif
fere nces betw een differe nt vehicl eleve ls
com paredtothenor malle ve l Ve
hicl e
le ve l Ve
hicl es
without Off-
ro ad pac kage Ve
hicl eswith
Of f-road pack‐
ag e
Ca rwa sh Approx.
+3.5 in
(+90 mm) Appr
ox.+3.5 in
(+90 mm)
Of f-roa d
le ve l+3 Una
vailable Approx.+3.5 in
(+90 mm)
Of f-roa d
le ve l+2 Una
vailable Approx.+2.4 in
(+60 mm)
Of f-roa d
le ve l+1 Appr
ox.
+2.4 in
(+60 mm) Appr
ox.+1 .2 in
(+30 mm)
Spor tA pprox.-0.6 in
(-1 5mm) Appr
ox.-0.6 in
(-1 5mm)
Spor t+A pprox.-1 .0 in
(-25 mm) Appr
ox.-1 .0 in
(-25 mm) Sy
stem limit s
AI RMA TICmayno tbe available orhave onl ylimi‐
te dav ailabilit yin thefo llo wing cases :
R The overheating protect ion has been activa‐
te ddue tofreq uent leve lch ang eswit hin a
shor ttim e.The 00C4 warning lam pappear s
in themultifunc tiondispla y.
Af terth ecooling phase,thesy stem isag ain
av ailable without restriction.
Se tting thevehicl eleve l(v ehicles withAIR‐
MA TIC) &
WARNIN GRisk ofacci dent because
ve hicle leve lis toohigh
If yo udr ive at ahigh ervehicle leve l,th edr iv‐
ing charact eristic sma ybe impair eddue to
th ehigher vehicle centerofgrav ity .
The vehicle candrift outw ards, forex am ple,
when steer ing orcor ner ing. #
Alw aysch oose ave hicle leve lwhic his
suit edtothedr iving style and thero ad
sur face condi tions. &
WARNIN GRisk ofentr apment from vehi‐
cle lowe ring
Whe nlowe ring theve hicle, people could
become trapped ifth eir limbs arebe tween
th eve hicle body andthetir es orunder neath
th eve hicle. #
Mak esur eno one isunder neathth e
ve hicle orintheimmediat evicin ityof
th ewheel arch es when theve hicle is
being lowe red. &
WARNIN GRisk ofbeco ming trap ped
du eto theve hicle lowe ring
Ve hicl eswith AIRMA TICorleve lcontr ol:
when youunlo adlugg ageor lea vetheve hi‐
cle, theve hicle firs trises slightly andthen
re tur ns tothese tle ve lshor tly af te rw ards.
Yo uor anyone else inthevicin ityofthe
wheel arch es ortheunderbody couldthus
bec ome trapped.
The vehicle canalso belowe redaf te rbeing
loc ked. Dr
iving andparking253

#
Onlyins talla ball couplin gth at mee ts
th eper mitt eddimension sand hasbeen
designed forth etrailer operation
re qu iremen ts. #
Donotmodif yth eball coupling orthe
tr ai le rhi tc h. The
values approvedby themanuf acturercan be
fo und ontheidentif ication platesand inthe
"T ec hn ical data"sec tionunde r"T ra iler hitch"for
th eto wing vehicle (/page565). &
WARNIN GSw erving oftheve hicle/
tr ailer combination duetoinc reased
spee d
If th eve hicle/tr ailercombination swerve s,
yo ucan lose contro lof it.
The vehicle/tr ailercombination caneven tip
ove r. #
Under nocircums tances should yo utry
to inc rease thespeed tostra ight enthe
ve hicle/tr ailercombination. #
Reduce speed anddonotcount er-ste er. #
Ifneces sary,appl yth ebr ak es. *
NO
TEDama getotheengine asare sult
of ove rheating #
Ifyo ure trof itatrai le rhi tc h, mod ifica ‐
tio ns totheengine cooling system may
be neces sary,dependin gon theve hicle
model.
When retrof itti ng atrai le rhi tc h, ob serveth e
fa stening pointson thech assis . Re
trof itti ng atrai le rhi tc his pe rm issible onlyif a
trailer loadisspec ified inyour vehicle docu‐
ments. Ifth is is no tth ecase, theve hicle isno t
appr ovedfo rtr ail er oper ation.
Fu rther information canbeobt ained ataqu ali‐
fi ed specialis two rkshop.
If th etrailer coupling isremo vable, itis essent ial
to com plywith theoper ating instruction sof the
tr ai le rcou pling manuf actu rer.
Couple anduncouple thetrailer carefull y.Ifyo u
do notcon nectth etra iler totheto wing vehicle
cor rectl y,thetrailer maybecome detach ed. Obser
vethefo llo wing noteson theto ngu e
we ight :
R Donotuse ato ngu ewe ight that exceed sor
fa lls belo wtheper missible tongu ewe ight
R Use ato ngu ewe ight asclos eas possible to
th emaximum tongu ewe ight
Do notex ceed thefo llo wing values:
R Perm issible trailerload
R Perm issible rear axle load oftheto wing vehi‐
cle
R Perm issible gross weight oftheto wing vehi‐
cle
R Perm issible gros swe ight ofthetra iler
R Maximum permissible speedofthetrailer
En sur eth efo llo wing beforest ar tin gajo ur ne y:
R The tirepr essur eon there ar axle oftheto w‐
ing vehicle issetfo ra maximu mloa d
R The lighting ofthecon nect edtrailer isoper a‐
tion al
In theeve ntofincr eased rear axle load, theve hi‐
cle/tra ilercombination mayno texc eed amaxi‐ Dr
iving andparking 29
7

Inf
ormation oncoolant isavailable atthefo l‐
lo wing locations:
R IntheMer cedes- BenzSpecif ication sfo r
Oper ating Fluids 310.1:
- Athttps: //bevo.mer cedes-b enz.com
- IntheMer cedes- BenzBeVoapp
R Ataqu alif ied spec ialistwo rkshop *
NO
TEOverhea ting athigh outsid ete m‐
per atur es If
an inapp ropr iat ecoolant isused, the
engine cooling system isno tsuf ficie ntlypr o‐
te cted agains tov erheating andcorrosion at
high outside temp eratur es. #
Alw aysuse coolant approvedby
Mer cedes-Ben z. #
Obser vetheins truction sin the
Mer cedes-Ben zSpecif ications forOper‐
ating Fluids310.1. Ha
ve thecoolant regular lyreplaced ataqu alif ied
spec ialistwo rkshop. The
propor tionofcor rosion inhibit or/antifr eeze
concen trat ein theengine cooling system should
be:
R Aminimum of50% (antifr eezeprotect ion
do wn toappr oximat ely-3 5°F (-37°C))
R Amaxim umof55% (antifreeze protect ion
do wn to-49 °F(-45 °C))
Co olant capacity Mode
lC apacity
GL S450 4MATIC 20.0USqt
(1 8.9 liter s)
GL S580 4MATIC 16.6 US qt
(1 5.7 lite rs) Mer
cede s‑Maybac hC apacity
Mer cedes -Maybach
GL S60 04MA TIC 20
.0US qt
(1 8. 9liter s) No
teson windshield washer fluid Obser
vetheno teson oper ating fluids
(/ page55 4). &
WARNIN G‑Ri sk offire and injuryfrom
wind shieldwa sher concen trat e
Wi ndsh ield wa sher concen trat eis highly
fl ammab le.Itcoul dign ite if it com esinto
con tact with hotengine component partsor
th eex haus tsy stem. #
Mak esur eth at no wind shieldwa sher
concen trat espills outnext to thefiller
open ing. *
NO
TEDama getotheex terior lighting
due touns uitable windshieldwa sher fluid Uns
uitable windshieldwa sher fluid maydam‐
ag eth eplas ticsur face oftheex terior light‐
ing. #
Onlyuse windshield washer fluid whic h
is also suitable foruse onplastic sur fa‐
ces, e.g.MBSumm erFitor MB Winter‐
Fit. Te
ch nica lda ta 559

All
mod els(vehi‐
cles withAMG
St yling) 1 1
Front 2 2
Rear
Of f-road leve l22 5° 24°
Of f-road leve l32 7°-28° 25°-26° Mer
cedes‑Ma y‐
bac h 1 1
Front 2 2
Rear
Nor mal leve l2 4°21°
Ra ised leve l2 7°25° *Depend
ingonthetir esize.
Maxim umgradien tcli mbing ability
The vehicle's gradient climbing abilitydepends
on thewe ight distribution intheve hicle, thete r‐
ra in con dition sand thero ad sur face condi tions.
The specified va lue applies when:
R The vehicle isready todrive
R The LOWRAN GEoff-r oad gear ofthetra ns‐
fe rcase iseng aged R
The road sur faces condi tions andthus the
tr acti onarego od
A grad ient climbi ngability of100% corresponds
to an incline of45 °.
Obse rveth eno teson driving inmount ainous ter‐
ra in . Model
Maximumgra‐
dien tcli mbing
abil ity
Ve hicl eswithout Off-
ro ad pac kage 80%
Ve hicl eswith Off-road
pac kage
When LOWRANGE off-
ro ad gear iseng aged 10
0% Mer
cedes‑Ma ybachM aximumgra‐
dien tcli mbing
abil ity
All mode ls 80% Tr
aile rhitc h Gene
ralno teson thetrailer hitch Modif
ications totheengine cooling system may
be neces sary,dependin gon theve hicle model.
The retrof itti ng ofatrai le rhi tc his only perm issi‐
ble ifato wing capac ityisspec ified inyour vehi‐
cle documents.
Fu rther information canbeobt ained ataqu ali‐
fi ed specialis two rkshop. To
wing capacit y The
tongu ewe ight isno tinc luded intheto wing
capac ity. Mod
el Towing capacit y,
br ak ed
All models 7716 .2 lbs(3 500 kg) Mer
cede s‑Maybac hT owing capa city,
br ak ed
All models 7716 .2 lbs(3 500 kg) Te
ch nica lda ta 565

Engine
Displa
ymes sages
Possible causes/conseq uencesand0050 0050
Solutions
00BD Check Coolant LevelSee
Operator' sManual *T
hecoolant leve lis toolow.
* NO
TEEngi nedama gedue toinsuf ficie ntcool ant #
Avoid long journeys wit hins ufficie ntcool ant. #
Addcoolant (/page48 1). #
Have theengine cooling system checkedat aqu alif ied spec ialistwo rkshop.
ÿ
Coola ntToo HotStop Vehi-
cle Turn Engine Off *T
hecoolant istooho t. #
Stop theve hicle immediat elyinaccor dance withth etraf fic condi tions andswitchof fth eengine. &
WARNIN GDang erofburnswhen opening thehood
If yo uopen thehood when theengine hasoverheat edordur ing afire intheengine compartmen t,yo uco uld
co me intoco ntact withho tga ses orother escaping operating fluids. #
Beforeopen ingthehood, allowtheengine tocool down. #
Intheeve ntofafire intheengine compartmen t,ke ep thehood closed andcallthefire ser vice. #
Waitunt ilth eengine hascooled down. #
Mak esur eth at theair supply tothera diat orisno tim pair ed. 582
Displa ymessag esand warning/ indic ator lam ps

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions
St op Vehicle LeaveEngine
Running WaitTransmission
Cooling *T
hetransmission isove rheating. Pullingaway ma ybe temp orarily im pair edornotpossible. #
Stop theve hicle immediat elyinaccor dance withth etraf fic condi tions.Do notcontinu edr ivi ng und eranycir‐
cums tances. #
Lea vetheengine running . #
Waitunt ilth edispla ymessag edisappear sbef orepulling away.
Auxi liar yBatte ryMa lfunc-
tio n *T
heauxilia rybatt eryfo rth etra nsmiss ionisno long erbeing charge d. #
Consult aqu alif ied spec ialistwo rkshop. #
Untilthen, alwaysselect parkposition 005Dmanually beforeyo uswit choffth eengine. #
Beforelea ving theve hicle, apply theelectr icpar king brak e. 586
Displa ymessag esand warning/ indic ator lam ps