2020 MERCEDES-BENZ G-CLASS Owner's Manual

#
Open thehood. #
Remo veanyex istin gmois turefrom thefuse
bo xusing adr yclo th. #
Loosen screws1. #
Foldout cover2 inthedir ect ion ofthe
ar row and remo veit. Closing #
Chec kwhe ther theseal isposition edcor‐
re ctly inthelid. #
Place tabs 3 ofcover2 inthefuse box. #
Ensur eth at cover2 sits onthefuse box. #
Tight enscrews1. #
Close thehood. Opening
andclosing thefus ebo xin the
coc kpit The
fuse boxis on theside ofthedashboar d
under aco ver. #
Con tact an author ized Mercedes-B enzCen‐
te rfo rfur ther information . Opening
andclosing thefus ebo xin there ar
passe nger comp artment Obse
rveth eno teson electr icalfuses
(/ page38 1). #
Foldtheright-h andseat cushion forw ard
(/ page96) . Fo
ldout and remo vecover1. Br
eakdo wnassi stanc e383

No
teson noise orunusua lhand lingcharac‐
te rist ics
While driving ,pa yatt ent ion tovibr ations, noises
and unusu alhandl ingcharact eristic s,e.g .pullin g
to one side. Thismayindicat eth at thewheels or
tir es aredamag ed.Ifyo ususpe ctthat atir eis
def ective, reduce your spee dimm ediat ely. Stop
th eve hicle assoon aspossible tocheckth e
wheels andtires fordama ge.Hid den tireda m‐
ag ecou ldalso be cau sing theunusual handling
ch aract eristic s.Ifyo ufind nosigns ofdamag e,
ha ve thetir es and wheels checkedat aqu alif ied
spec ialistwo rkshop. No
teson regular lyinspect ingwheels and
tir es &
WARNIN GRisk ofacci dent from dam‐
ag ed tires
Dama gedtir es can cause tirepr essur eloss.
As are sult, youco uld lose contro lof your
ve hicle. #
Chec kth etir es regular lyforsigns of
dama geand replace anydamag edtires
immediat ely. &
WARNIN GRisk ofaquaplani ng dueto
insuf ficie nttiretrea d
Insu fficien ttir etread willresult inreduced
tir egr ip. The tiretread isno long erable to
dissipat ewa ter.
This means that inhea vyrain or slush the
ri sk ofhydroplaning isincr eased, inpar ticu‐
lar ifve hicle speed isno tadap tedto suit the
condi tions.
If th etir epr essur eis toohigh ortoolow,
tir es ma yex hibit differe nt leve ls of we arat
dif fere nt locati ons onthetir econ tact sur‐
fa ce. #
Thu s,yo usho uld regular lych eckth e
tr ea dde pthand thecon dition ofthetir e
con tact surface across theent ire widt h
of all tires. Minimum
tread depthfor:
R Summ ertires: 00CEin(3 mm)
R M+S tires: 00CFin(4 mm) #
Forsaf etyre ason s,replace thetir es
bef oreth eleg ally prescr ibed limit for
th eminimum tread depthisreac hed. Car
ryout thefo llo wing checks on allwheels reg‐
ular ly,at leas tonce amont hor as requ ired, e.g.
pr ior toalon gjo ur ne yor drivin gof f-ro ad:
R Chec kth etir epr essur e(/ page385).
R Visual lyinspect tires and wheels fordama ge.
R Chec kth eva lve caps.
The valves mus tbe protect edagains tmois‐
tur eand dirtby theva lve caps approved
especiall yfo ryo ur vehicle byMer cedes-Ben z.
R Visual checkof thetir etread depthand the
tir econt actsurface across theent ire widt h.
The minimum tread depthforsummer tires is
00CE in(3 mm) andforwint ertires 00CF in
(4 mm). 38
4
Wheel sand tires

Six
mar ks1 showwher eth ebar indicat ors
(ar row )ar eint egr ated intoth etir etread. They
ar evisible onceatread depthofappr oximat ely
00CD in(1.6 mm) hasbeen reac hed. No
teson sno wch ains
* NO
TEDama getocom pone ntsofthe
ve hicle body orchassis duetofitt ed
sno wch ains If
yo ufit sno wch ains tothefront wheels of
4MA TICvehicles, youma ydamag eco mp o‐
nent sof theve hicle body orchassis . #
Onlyfit sno wch ains tothere ar wheels
of 4MA TICvehicles. Mer
cedes- AMGvehicl es:theno teson using
sno wch ain- com patible AMGwint ertires appl y
to AMG tires. Sno wch ains areper mittedfo ruse
only withth ese.
Obser vethefo llo wing noteswhen usingsnow
ch ains :
R Snow chains areon lype rm issible forcer tain
wheel/t ire com binat ions.Yo ucan obtain
inf ormat ionabout this from anaut hor ized
Mer cedes -Benz Cent er.
R Forsaf etyre ason s,on lyuse snow chains that
ha ve been specif icallyapproved foryo ur
ve hicle byMer cedes-Ben z,or sno wch ains
wit hth esame qualit yst andar d.
R Ifsn ow chains areins talled, themaximum
per missible speedis30 mph(50 km/h).
R Vehicl eswith Activ ePa rking Assis t:Do
no tuse ActivePa rking Assistwhen snow
ch ains areins talled. %
Youcan deac tivateES P®
to pull away
( / pag e16 8). This allo ws thewheels to
spin, achie ving anincr eased driving forc e. Ti
re pres sur e No
teson tirepr essur e &
WARNIN GRisk ofacci dent dueto insuf ‐
fi cie ntor excess ive tir epr ess ure
Under inflate dor ove rinf late dtir es pose the
fo llo wing risk s:
R The tires ma ybur st,especiall yas the
load andvehicle speed increase.
R The tires ma ywe arexc essiv elyand/or
une venly, whic hma ygr ea tly impair tire
traction .
R The drivin gch aract eristic s,as wellas
st eer ing and braking, maybe greatl y
im pair ed. #
Com plywithth ere comme ndedtire
pr ess ureand checkth etir epr essur eof Wheels
andtires 385

all
tires inc ludin gth espar ewheel regu‐
lar ly:
R atleas tonce amont h
R when theload chang es
R beforeembar kingon alon gerjour ney
R ifoper ating conditions chang e,e.g .of f-
ro ad drivin g #
Adjus tth etir epr essur eas neces sary. Dr
iving with tirepr es su re that istoohigh ortoo
lo w can :
R Sho rten theser vice life of thetir es.
R Cause increased tiredamag e.
R Adverselyaf fect drivi ng charact eristic sand
th us drivin gsaf ety, e.g. due tohydroplaning. &
WARNIN GRisk ofan acci dent dueto
insuf ficie nttirepr ess ure
Ti re swit hpr essur eth at istoolow can over‐
heat andburstas are sult. In
addition, they also sufferfr om excessiv e
and/or irre gular wear,whic hcan significan tly
im pair thebr aking proper tiesand thehan‐
dling charact eristic s. #
Avoid excessiv elylow tirepr essur esin
all thetir es, including thespar ewheel. Ti
re pressur ewhic his toolow can cause:
R Tire def ectsas are sult ofove rheating.
R Impair edhandling charact eristic s.
R Irre gular wear.
R Incr eased fuelconsum ption. &
WARNIN GRisk ofacci dent from exces‐
siv etir epr essur e
Ti re swit hexc essiv elyhigh pressur ecan
bur stbecause they aredamag edmor eeasil y
by highw ayfill, po tholes etc.
In addition, they also sufferfr om irre gular
we ar,whic hcan significan tly im pair thebr ak‐
ing proper tiesand thehandling charact eris‐
tic s. #
Avoid excessiv elyhigh tirepr essur esin
all thetir es, including thespar ewheel. Ex
cessiv elyhigh tirepr essur ecan result in:
R Incr eased braking distance.
R Impaired handl ing charact eristic s.
R Irre gular wear.
R Impair eddrivin gcom fort.
R Sus ceptibility to damag e. &
WARNIN GRisk ofacci dent caused by
re peat eddrop intirepr essur e
If th etir epr essur edr ops repeat edly,th e
wheel, valve or tirema ybe damag ed.
Insuf ficie nttirepr ess urecan causethetir es
to bur st. #
Inspect thetir efo rsigns offore ign
obje cts. #
Chec kwhe ther thewheel orvalve has a
leak . #
Ifyo uar eunab leto rectify thedamag e,
con tact aqu alif ied spec ialistwo rkshop. 386
Wheels andtires

Yo
ucan find informa tionon tirepr ess urefo rth e
ve hicle's fact or y-ins talled tires on thefo llo wing
labels:
R Tire and Loadi ngInfo rm atio nplacar don the
B‑pil larof your vehicle (/page39 1).
R Tire pressur eta ble ontheinside ofthefuel
fi ller flap (/ page38 7).
Obse rveth emaximum tirepr essur e
(/ page39 7).
Use asuit able pressur ega ug eto checkth etir e
pr essur e.The outerappear anceofatir edoes
no tper mit anyre liable conclusion aboutthetir e
pr essur e.
Ve hicl eswith atir epr ess uremonit oring sys‐
te m: Youcan also checkth etir epr essur eusing
th eon- boar dcom puter.
Onl ycor rect tirepr ess urewhe nth etir es are
cold. Condition sfo rcold tires:
R The vehicle hasbeen parkedwit hth etir es
out ofdir ect sunlight forat lea stthre ehour s.
R The vehicle hastrave led less than 1mile
(1 .6 km ). A
rise inthetir ete mp eratur eof 18 °F(10 °C)
incr eases thetir epr essur eby appr ox.10 kPa
(0. 1ba r/1 .5psi ).Ta ke this int oacc ount when
ch ecking thetir epr essur eof wa rm tires.
The tirepr es su re recomme ndedforincr ease d
loa d/spee din thetir epr essur eta ble can affect
th eride comf ort. &
WARNIN GRisk ofacci dent dueto
uns uitable accessories ontireva lve
If yo umoun tuns uitable accessories onto tire
va lves, thetir eva lves ma ybe overloaded and
malfunct ion,whic hcan cause aloss oftire
pr essur e.Afterm arke ttir epressu remonit or‐
ing systems willcause thetir eva lve to
re main open, depending onthedesign. This
can also result inaloss oftirepr essur e. #
Onlyscr ew standar dva lve caps orvalve
cap sspe cifica llyapprove dby
Mer cedes-Ben zfo ryo ur vehicle onto
th etir eva lve. Tr
aile roper ation notes
Alw aysinf lateth ere ar axle tires tothere com‐
mend edtirepr ess ureon thetir epr essur eta ble
fo rincr ease dloa d.
No teson driving onsand
When driving onsand, youcan lowe rth etir e
pr essur e(/ page13 6). Ti
re pres sur etab le The
tirepr ess ureta ble ison theinside ofthe
fuel filler flap.
% The datasho wnintheimag esisexam ple
dat a. Whee
lsand tires 38
7

The
tirepr essur eta ble showsthere comme nded
tir epr ess ures forall tires app rove dfo rth is vehi‐
cle. The recomme ndedtirepr ess ures apply for
cold tires und ervarious oper ating condit ions,i.e.
loading and/orspeedoftheve hicle.
If one ormor etir esizes precede atir epr essur e,
th etir epr essur einf ormation follo wing isonl y
va lid forth ose tiresizes.
The load condit ions"partially laden" and"fully
laden" aredef ined intheta ble fordif fere nt num ‐
be rs of passeng ersand amounts oflugg age. The
actual number ofseats maydif ferfr om this.
Som etir epr essur eta bles onlysho wtherim
diame terins tead ofthecom pletetiresize, e.g.
R1 8.The rim dia me teris par tof thetir esize and
can befound onthetir eside wall(/ page398 ).
Be sureto also obse rveth efo llo wing further
re lat ed subje cts:
R Noteson tirepr essur e(/ page385)
R Tire and Loadi ngInfo rm atio nplacar d
(/ page39 1)
R Max imum tirepr essur e(/ page39 7) Chec
kingtirepr essu resmanu ally #
Read thetir epr essur efo rth ecur rent operat‐
ing cond itions from theTire and Loadi ng
In fo rm atio nplacar dor thetir epr essur e
ta ble. Obser vetheno teson tirepr essur e. #
Remo vetheva lve cap ofthetir eto be
ch ecked. #
Press thetir epr essur ega ug esec urelyon to
th eva lve. #
Read thetir epr essur e. #
Ifth etir epr essur eis lowe rth an there com‐
mend edvalue, increase thetir epr essur eto
th ere comme ndedvalue. #
Ifth etir epr essur eis higher than there com‐
mend edvalue, release air.To do so, press
do wn theme talpin intheva lve, e.g. using
th etip ofapen forex am ple. Then checkth e
tir epr es su re again usin gth etir epr essur e
ga ug e. #
Screw theva lve cap ontoth eva lve.
Fu rther relat ed subje cts:
R Noteson tirepr essur e(/ page385) R
Tire pressur eta ble (/ page38 7)
R Tire and Loadi ngInfo rm atio nplacar d
(/ page39 1) Ti
re pres sur emoni toring system Fu
nction ofthetir epr essur emoni toring sys‐
te m &
DANG ER Risk ofacc iden tdue toinc or‐
re ct tirepr ess ure
Eac htir e, incl uding thespar e(if prov ided),
should becheckedmont hlywhen coldand
inf lated totheinf lation pressur ere comme n‐
ded bytheve hicle manuf actureron theve hi‐
cle placar dor tireinf lation pressur elabel .(If
yo ur vehicle hastires ofadif fere nt size than
th esize indicat edon theve hicle placar dor
th etir einf lation pressur elabel, yousho uld
de term ine thepr oper tireinf lation pressur e
fo rth ose tires).
As anadded safetyfe atur e,your vehicle has
been equipped withatir epr essur emonit or‐
ing system (TPMS) that illumin ates alow tire 388
Wheelsand tires

pr
essur ete lltale when oneormor eof your
tir es issign ifican tly unde r-inf lated. Accor d‐
ing ly,whe nth elow tirepr essur ete lltale illu‐
min ates, yousho uld stop and checkyo ur
tir es assoo nas poss ible, andinflateth em to
th epr oper pressur e.Driving onasignif i‐
cant lyunder -inflated tirecauses thetir eto
ove rheat and canlead totirefa ilur e.Un der -
inf lation alsoreduces fuelefficie ncy and tire
tr ea dlife ,and mayaf fect theve hicle ’shan‐
dling andstopping ability.
Please note that theTPMS isno ta subs titute
fo rpr oper tiremaint enance, anditis the
dr iver ’s responsibili tyto maint aincorrect tire
pr ess ure, even ifunder -inflation hasnot
re ac hed theleve lto trig ge rill umina tionof
th eTPMS low tirepr essur ete lltale.
Yo ur vehicle hasalso been equipped witha
TPMS malfunction indicatortoindic atewhen
th esy stem isno toper ating proper ly.The
TPMS malfunct ionindicat oriscombin edwith
th elow tirepr essur ete lltale. When thesy s‐
te m detects amal functi on,thete lltale will
fl ash forapp roxima tely one minut eand then re
main continuously illumina ted. This
seq uence willcontinue upon subseq uent
ve hicle star t-ups aslon gas themalfunct ion
ex ists.
When themalfunct ionindicat orisillumina‐
te d, thesy stem mayno tbe able todetect or
sig nal low tirepr ess ureas intende d.TPM S
mal functi onsmayoccu rfo ra va riet yof rea‐
son s,inc ludin gth eins tallation ofreplace‐
ment oralternat etir es orwheels ontheve hi‐
cle that preve nttheTPMS from func tioning
pr oper ly.
Alw aysch eckth eTPMS malfunct iontelltale
af te rre placing oneormor etir es orwheels
on your vehicle toensur eth at there place‐
ment oralternat etir es and wheels allowthe
TPMS tocontinu eto function proper ly. The
system checks thetir epr essur eand thetir e
te mp eratur eof thetir es installed ontheve hicle
by means ofatir epr essu resensor .
Ne wtirepr essur esensor s,e.g. inwint ertires,
ar eaut omaticall yta ught -indur ing thefirs tjou r‐
ne yth ey areused. The
tirepr essur eand thetir ete mp eratur e
appear inthemultifunc tiondispla y
(/ page390).
If th er eis asubs tantia lpr ess ureloss orifth e
tir ete mp eratur eis exc essiv e,youwill bewarned
in thefo llo wing ways:
R viadisp lay messa ges(/ page458)
R viathe0077 warning lam pin theins trument
clus ter(/ page48 7)
The tirepr essu remonit oring system isonl yan
aid. Itis thedr iver's responsibili tyto setth etir e
pr essur eto there comme ndedcoldtirepr ess ure
su itab leforth eoper ating situation .Se tth etir e
pr essur efo rcold tires using atir epr essu re
ga ug e. No tethat thecor rect tirepr ess urefo rth e
cur rent operati ng situa tionmu stfirs tbe taught -
in to thetir epr essur emonit oring system.
In mos tcases, thetir epr essur emonit oring sys‐
te m wil lau tomatical lyupd ateth ene wrefere nce
va lues afte ryo uha ve chang edthetir epr essur e.
Yo ucan ,ho we ver,also updat eth ere fere nce val‐
ues byrestar tin gth etir epr essur emonit oring
sy stem manually (/page390). Wheels
andtires 389

Sy
stem limit s
The system maybe impair edorma yno tfunc tion
in thefo llo wing situat ions:
R thetir epr essur ehas been setincor rectly
R ther eis asudden pressur eloss caused, for
ex am ple, byafo re ign obje ctpene trating the
tir e
R ther eis amalfunct ioncaused byano ther
ra dio signal source
Mak esur eto obser vethefo llo wing further rela‐
te dsubjec t:
R noteson tirepr essur e(/ page385)
Chec kingthetir epr essur ewit hth etir epr es‐
sur emoni toring system
Re quirement s:
R The ignit ionisswitc hedon.
On- boar dcom puter:
4 Service 5
Tires
One ofthefo llo wing displa ysappear s:
R Cur rent tirepr ess ureand tirete mp eratur eof
th eindividual wheels: R
Tire pressure willbedisplayed afterdriving a
few minutes
R Tire Pressure MonitorAct ive: thete ac h-in
pr oce ssofthesy stem isno tye tcomple te.
The tirepr essur esarealr eady being moni‐
to re d.
The teac h-in proce sstake slong erifyo uha ve
eng aged thedif fere ntia llo ck s. Chec kth etir e
pr essur eag ain atalat er dat e. #
Com pareth etir epr essur ewit hth ere com‐
mend edtirepr ess urefo rth ecur rent operat‐
ing cond ition (/ page 387).Obse rveth e
no teson tirete mp eratur e(/ page385). %
The values displa yedin themultifunc tiondis‐
pla yma yde viat efrom those ofthetir epr es‐
sur ega ug eas they referto sea leve l.At high
altitudes, thetir epr essur eva lue indic ated by
a pr essur ega ug ear ehigh erthan those
sho wnbytheon- boar dcom puter.In this
case, donotre duce thetir epr essur e.
Mak esur eto obser vethefo llo wing further rela‐
te dsubjec t:
R Noteson tirepr essur e(/ page385)
Re star ting thetir epr essur emoni toring sys‐
te m
Re quirement s:
R The recomme ndedtirepr ess ureis cor rectl y
se tfo rth ere spectiv eoper ating status on
eac hof thefo ur wheel s(/ page38 5).
Re star tth etir epr essur emonit oring system in
th efo llo wing situat ions:
R The tirepr essur ehas chang ed.
R The wheels ortires have been chang edor
ne wlyins talled. 390
Wheels andtires