2020 MERCEDES-BENZ GLS SUV flat tire

Af
tera ch ang ein tirepr essur e,awheel rotatio n
or atir ech ang e,or ifyo uha ve re-ins talled
wheels ortires, thetir epr essur eloss warning
sy stem has tobe restar ted(/ page52 1).
The tirepr essur eloss warning system does not
re place theneed toregular lych eckth etir epr es‐
sur e.
Sy stem limita tions
The system maybe impair edorma yno tfunc tion
par ticular lyin thefo llo wing situat ions:
R Incorrectly settir epr ess ure
R Sud den press urelos scau sed,fo rex am ple,
by afo re ign obje ctpene trating thetir e
R Steady pressur eloss inseveraltir es
The system has are strict ed ordel ayed func tion
par ticular lyin thefo llo wing situat ions:
R Poor ground condit ions,e.g.snowor grave l
R Driving with sno wch ains
R When adoptingave ry spor tydriving style
wit hhigh corner ing speeds orsudden accel‐
er ation
R Drivin gwit have ry hea vyorlarge trai le r R
Driving with ahigh load
Be sureto also obse rveth efo llo wing further
re lat ed subje cts:
R Noteson tirepr essur e(/ page51 5)
R Display messa gesabout thetir es
(/ page61 4)
Re star ting thetir epr essur eloss warning
sy stem
Re quirement s:
R The recomme ndedtirepr ess ureis cor rectly
se tfo rth ere spectiv eoper ating status on
eac hof thefo ur wheel s(/ page51 5).
Re star tth etir epr essur eloss warning 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. On-
boar dcom puter:
4 Service 5
Tires #
Swipe down wardson Touc hCon trol on the
lef t-hand sideofthesteer ing wheel.
The Tire Pressure ControlSystem Active
Restart messageis sho wninthemultifunc ‐
tion displa y. #
Tobegin restar t,pr ess Touc hCon trol on the
lef t-hand sideofthesteer ing wheel.
The Tire Pressure NowOK?messag eis
sho wninthemultifunc tiondispla y. #
Select Yes. #
Toconf irm restar t,pr ess Touc hCon trol on
th elef t-hand sideofthesteer ing wheel.
The Run FlatIndic atorRestart edmessag eis
sho wninthemultifunc tiondispla y.
Af teryo uha ve driven fora fe w min utes, the
tir epr es su re loss warning system monit ors
th ese ttir epr essur esofall thetir es.
Be sureto also obse rveth efo llo wing further
re lat ed subje cts:
R Noteson tirepr essur e(/ page51 5) Wh
eelsan dtir es 52
1

and
one-h alftim esaswellon thego vernment
te st trac kas atir egr ad ed 100.
The relativ eper form anc eof tires depen dsupon
th eactual conditions oftheir use, howe ver,and
ma ydepar tsign ifican tly from thenor mdue to
va riatio nsindrivin ghabit s,ser vicepr act icesand
dif fere nces inroad charact eristic sand climate
con dition s.
Tr actio ngr ade &
DANG ER Risk ofacc iden tdue toinade‐
qu atetract ion
The tract ion grade assig nedtothis tireis
based onstra ight -ahead brakin gtract ion
te sts, and does notinclude either acceler a‐
tion, corner ing, hydroplaning orpeak traction
ch aract eristic s. #
Alw aysadap tyo ur drivin gst yle and
dr ive at aspeed tosuit thepr ev ailin g
traf fic and weather condition s. *
NO
TEDama getothedr ivet ra in from
wheelspin #
Avoid wheelspin. The
traction classes, from highes tto lowe st,ar e
AA ,A, Band C.Tho segrad es repr esent thetir e's
ability tostop onwetpa vement asmeasu red
und ercontro lled condition son spec ified govern‐
ment test sur faces ofasp haltand concr ete. A
tir emar kedC ma yha ve poor traction perform ‐
anc e.
Te mp eratur egr ade &
WARNIN GRisk ofacci dent from tire
ove rheating andtirefa ilur e
The temp eratur egr ade forth is tireis es tab‐
lished fora tir eth at isproper lyinflat ed and
no tove rloaded. Excessiv espeed, underinfla‐
tion, orexc essiv eloading, either separ ately
or incombin ation,cancause excessiv eheat
build-up andpossible tirefa ilur e. #
Obser vethere comme ndedtirepr es‐
su resand regular lych eckth etir epr es‐ sur
eof all tires including thespar e
wheel. #
Adjus tth etir epr essur eas neces sary. The
temp eratur egr ades areA (the highes t),B
and C.The yre pr esent thetir e's resis tance tothe
ge ner ation ofhea tand itsability todissipat e
heat when tested under controlled conditions on
a specif iedindoor laborator yte st wheel. Sus‐
ta ined hightemp eratur ecan cause themat erial
of thetir eto deg ener ateand reduce tirelife, and
exc essiv ete mp eratur ecan lead tosudden tire
fa ilur e.Grade Ccor responds toaleve lof per‐
fo rm anc ewhic hall passe nger car tires mus t
mee tunde rth eFe der alMo torSaf etySt andar d
No. 109. Grade sB and Arepr esent higher leve ls
of per form anc eon thelabor ator yte st wheel
th an theminimum requ ired bylaw. DO
T,Tire Iden tificat ionNumbe r(TI N) US
tirere gulations stipulat eth at eve rytire man‐
uf actu reror retrea de rmu stimprint aTIN inor
on theside wallof eac htir epr oduced. Wheels
andtires 52
7

Onl
yuse tires, wheels andaccessor iesthat
ha ve been checkedand recomme ndedby
Mer cedes-Ben z. *
NO
TERisk todriving safetyfrom retrea ‐
de dtir es Re
trea de dtir es arenei ther tested nor recom‐
mend edbyMer cedes-Ben z,since prev ious
damag ecan notalw aysbe detected on
re trea de dtir es .
Fo rth is reason drivin gsaf etycan notbe guar ‐
ant eed. #
Donotuse used tire sif yo uha ve no
inf orma tionab ou tth eir prev ious usage. *
NO
TEPossible damag eto wheels ortires
when drivin gove robs tacle s Larg
ewhe elsha ve alowe rtir esection width.
The lowe rth etir esect ionwidt h,thegr eat er
is therisk ofdamag eto wheels ortires when
dr ivin gove robs tacle s. #
Avoid obstacle sor drive pa rticular ly
car efu lly. *
NO
TEPossible wheel andtiredamag e
when parking oncurbs orinpo tholes Pa
rking oncurbs orinpo tholes maydamag e
th ewheels andtires. #
Ifpossible, parkonl yon flat sur faces. #
Avoid curbs andpotholes when parking. *
NO
TEDama getoelectr oniccomponen t
par tsfrom theuse oftire-moun tingtools Ve
hicl eswith atir epr ess uremonit oring
sy stem: Electronic component partsare
locat edinthewheel. Tire -mou nting tools
should notbe used inthear ea oftheva lve.
This could other wise damag eth eelectr onic
com ponen tpar ts. #
Have thetir es chang edataqu alif ied
spec ialistwo rkshop only. *
NO
TEDama getosummer tires atlow
ambient temp eratur es At
low ambien tte mp eratur es,tear scoul d
fo rm when drivin gwit hsumm ertires, caus‐
ing perman entdamag eto thetir es. #
Attemp eratur esbelo w45 °F(7°C),
use M+S tires . Ac
cess orypa rts th at areno tappr ovedfo ryo ur
ve hicle byMer cedes-Ben zor areno tbeing used
cor rectl ycan impairth eoper ating safety.
Bef orepu rchasing andusing non-appr oved
acc esso ries, visit aqu alif ied spec ialistwo rkshop
and inquireabout :
R Suit ability
R Leg alstipulation s
R Factor yre comme ndations &
WARNIN GRisk ofacci dent with high
per form anc etir es
The spec ialtiretread incom binatio nwit hth e
op timized tirecom pound means that therisk Wheels
andtires 535

of
skidding orhydroplaning onwetro ads is
inc reased.
In addit ion,th etir egr ip isgreatl yre duced at
a low outside temp eratur eand tireru nning
te mp eratur e. #
Switc hon theES P®
and adap tyo ur
dr ivin gst yle accor dingly. #
Use M+S tireat outside temp eratur es
of less than 10 °C (50 °F). Obser
vethefo llo wing when selecting,ins talling
and replacing tires:
R Onlyuse tires and wheels ofthesame type
(summer tires, wint ertires, MOEx tende d
tir es) and thesame make.
R Onlyins tallwheels ofthesame sizeonone
axle (leftand right).
It is onl yper missible toins talla dif fere nt
wh eelsi ze intheeve ntofaflat tirein order
to drive to thespecialis two rkshop.
R Onlyins talltir es ofthecor rect size ontoth e
wheels. R
Vehicl eswith atir epr ess uremonit oring
sy stem: Allinstalled wheels mustbe equip‐
ped withfunc tioningsensorsfo rth etir e
pr essur emonit oring system.
R Attemp eratur esbelo w45 °F(7°C), usewin‐
te rtir es orall-seaso ntir emar kedM+S forall
whee ls.
Wi nter tires bearing the004D snowflak esym‐
bol inaddition totheM+S marking prov ide
th ebes tpossible grip inwintr yro ad con di‐
tio ns.
R ForM+S tires, only usetires wit hth esame
tr ead.
R Obser vethemaximum permissible speedfor
th eM+S tires installed.
If th is isbelo wtheve hicle's maximum speed,
th is mus tbe indic ated byan appr opriate
label inthedr iver's field ofvision.
R Break inne wtires atmoder atespeeds for
th efirs t60 miles(1 00 km) .
R Replace thetir es afte rsix yearsat thelat est,
re ga rdless ofwe ar. R
Wh enreplac ingwith tires that donotfe a‐
tur eru n-flat charact eristics :Ve hicles with
MOExt ended tires areno teq uipped witha
TIREFIT kitatthefa ct or y. Eq uip th eve hicle
wit haTIREFIT kitafte rre placing withtir es
th at do notfe atur eru n-f latch aract eristic s,
e.g .wint ertires.
Fo rmor einf ormation onwhee lsand tires, con‐
tac ta qu alif ied spec ialistwo rkshop.
Be sureto also obse rveth efo llo wing further
re lat ed subje cts:
R Noteson tirepr essur e(/ page51 5)
R Tire and Loadi ngInfo rm atio nplacar d
(/ page52 2)
R Tire size designation, load-bearing cap acity,
spe edrating andload index(/ pag e529)
R Tire pressur eta ble (/ page51 6)
R Noteson theemer gency sparewheel
(/ page54 4) 536
Wheelsand tires

#
Onlytight enwheel boltsorwheel nuts
when theve hicle ison thegr ound. #
Besureto obser vetheins truction sand
saf etyno teson "Cha nging awheel"
(/ page534). #
Forsaf etyre ason s,on lyuse wheel bolts
whic hha ve been approvedby Mer cedes-
Benz andforth ewheel inqu estion .
* NO
TEDama getopaintw orkof thewheel
ri m when screwing onthefirs twh eelbo lt If
th ewheel hastoomuc hpla ywhen screw‐
ing inthefirs twh eelbo lt, thewheel rim pai nt
can bedama ged. #
Press thewheel firm lyag ains tth e
wheel hubwhen screwing onthefirs t
wheel bolt. #
Tight enthewheel boltsevenlyin adi ag ona l
pa tter nin theor der indicat eduntil they are
fi ng er-tig ht. #
Ifth ecollapsible sparewheel hasbeen
ins talled, inflateth ecollapsible sparewheel
(/ page54 8). #
Lowe rth eve hicle (/page54 3). Lo
we ring theve hicl eaf te ra wh eelch ang e Re
quirement s:
R The newwheel hasbeen installed
(/ page54 2).
Obse rveth einf ormation ontirepr essur e
(/ page51 5). #
Plac eth era tche twr enc hont oth ehe xagon
nut ofthejac kso that theletter ing "AB" is
visible. #
Tolowe rthe vehicl e:tur nth era tche t
wr enc hof thejac kcount er-cloc kwise. #
Tight enthewheel boltsevenlyin adi ag ona l
pa tter nin theor der indicat ed1 to5 with
a max imum of59 lb-ft(80 Nm). #
Then tighten thewheel boltsevenlyin adi ag ‐
ona lpa tter nin theor der indicat ed1 to5
to thespecif iedtight ening torq ue of111 lb-ft
(1 50 Nm). &
WARNIN GRisk ofinju rythro ugh incor‐
re ct tigh tening torq ue
Th ewh eelscou ldcome looseifth ewheel
bolts orwheel nutsareno ttight ened tothe
pr escr ibed tighteningto rq ue. Wh
eelsan dtir es 54
3

Be
sureto also obse rveth efo llo wing further
re lat ed subje cts:
R Noteson tirepr essur e(/ page51 5)
R Tire and Loadi ngInfo rm atio nplacar d
(/ page52 2)
R Tire pressur eta ble (/ page51 6) Re
mo ving the eme rgency sparewheel The
eme rgency sparewheel islocat edunder the
cargo compartment floor .
% Notfo rMer cedes-Ma ybachvehicles. #
Obser vetheinf ormation onmount ingtires
(/ page534). #
Open theta ilg ate. #
Open thecar gocom partmen tfloor
(/ page14 1). #
Remo vetheemer gency sparewheel bagwith
th eemer gency sparewheel. #
Open theemer gency sparewheel bagand
re mo vetheemer gency sparewheel. Inflati
ngtheemer gency spar ewheel *
NO
TEOverhea ting dueto thetir einf la‐
tion compressor running toolong #
Donotru nth etir einf lation compressor
fo rlong erthan tenminu teswit hout
int erru ption. Re
quirement s:
R Com plywithth emanuf acturer'ssafetyno tes
on thest icke rof theemer gency sparewheel
and onthetir einf lation compressor .
R Remo vethetir einf lation compressor from
th estow agespac eunde rth ecar gocom part‐
ment floor (/ page495). #
Remo vesticke r1 from thetir einf lation
com pressor housing andaffix it to theins tru‐
ment clusterwit hin thedr iver's field of
vision. Wheels
andtires 54
5

at
thenear estqu alif ied spec ialistwo rk‐
shop. Thenewwheel mustha ve the
cor rect dimensi ons. The
collapsib lespa rewheel isan emer gency
spa rewheel whichis onl ysuit able foruse fora
limi tedper iod oftime andinare strict ed manne r
in theeve ntofaflat tire(e. g.unt ilth enear est
wo rkshop).
The tireside walls arefo lded when intranspo rt
mode. Beforeuse, thecollapsible sparewheel
has tobe inflated withth eaccom panying com‐
pr essor .
Chec kth etir epr essur eof thecollapsible spare
wheel onceins talled. Correct thepr essur eas
neces sary.
The maximum permissible speedwithacollapsi‐
ble spar ewheel installed is50 mph(8 0km/h).
Do notins tallsno wch ains onthecollapsible
spar ewheel.
Re place thecollapsible sparewheel afte rsix
ye arsat thelat est,re ga rdless ofwe ar.
% Ve
hicl eswith atir epr ess uremonit oring
sy stem: Ifacollap siblesparewheel isins tal‐ led
thetir epr essur emonit oring system can‐
no tfunc tion reliabl y.Fo ra fe w min utes afte r
an emer gency sparewheel isins talled, the
sy stem mayst ill displa yth etir epr essur eof
th ere mo vedwheel. Onlyre star tth esy stem
ag ain when thecollapsible sparewheel has
been replaced withane wwheel.
Be sureto also obse rveth efo llo wing further
re lat ed subje cts:
R Noteson tirepr essur e(/ page51 5)
R Tire pressur eta ble (/ page51 6) Re
mo ving the collapsi blespar ewh eel The
collaps ible sparewh eelis locat ed und erthe
cargo compartment floor . #
Obser vetheinf ormation onmount ingtires
(/ page534). #
Open theta ilg ate. #
Open thecar gocom partmen tfloor
(/ page14 1). #
Remo vethecollapsible sparewheel. Mer
cedes‑Ma ybachve hicl es
Wi thout refrig er ator box:The colla psiblespar e
whee lis locat edinthecollapsible sparewheel
bag onthecar gocom partmen tfloor . #
Obser vetheno teson mounting tires
(/ page534). #
Open thecar gocom partmen t. #
Detach thesecur ingstra ps. #
Unhook there tainin gspr ing hook sof the
secur ingstra ps from thebr ac kets. #
Remo vethecollapsible sparewheel bag
to ge ther wit hth ecollapsible sparewheel. #
Open thecollapsible sparewheel bagand
re mo vethecollapsible sparewheel.
Wi th refrig er ator box:The colla psiblespar e
whee lis locat edinthecollapsible sparewheel
bag inside theopen cargocom partmen tfloor . #
Obser vetheinf ormation onmount ingtires
(/ page534). #
Open thecar gocom partmen t. #
Detach thesecur ingstra ps. Wheels
andtires 54
7

#
Unhook there tainin gspr ing hook sof the
secur ingstra ps from thebr ac kets. #
Remo vethecollapsible sparewheel bag
to ge ther wit hth ecollapsible sparewheel. #
Open thecollapsible sparewheel bagand
re mo vethecollapsible sparewheel. Inflating
thecollap siblesparewheel Re
quirement s:
R Mount thecollapsible sparewheel asdescr i‐
bed (/page54 2).
R Remo vethetir einf lation compressor from
th estow agespac eunde rth etrunk floor
(/ page495).
* NO
TEDama getothecollapsible spare
wheel whenlowe ring theve hicle Lo
we ring theve hicle without prev iousl y
inf latin gth ecollapsible sparewheel can
damag eits rim. #
Inflateth ecollapsible sparewheel using
th etir einf lation compressor before
lo we ring theve hicle. *
NO
TEOverhea ting dueto thetir einf la‐
tion compressor running toolong #
Donotru nth etir einf lation compressor
fo rlong erthan tenminu teswit hout
int erru ption. #
Pull connector4 and thehose outofthe
housing. #
Unscr ew thecap from theva lve on thecol‐
lapsible sparewheel. #
Screw unio nnut 1ofthehose ontoth e
va lve.
Mak esur eon and offswitc h3 ofthetir e
inf lation compressor issetto 0. #
Inser tplu g4 intoth ecig arette light er
soc ketor intoa12 Vsoc ket(/ page 146) in
yo ur vehicle. #
Switc hon thepo we rsupp ly(/ pag e18 1). #
Press onand offswi tch3 onthetir einf la‐
tion compressor toI.
The tireinf lation compressor isswitc hedon.
The tireis inf lated. The tirepr essur eis
sho wnonmanome ter2. #
Pum pth etir eto thespecif iedtirepr essur e.
The specif iedtirepr essur eis print ed on the
ye llo wlabel ofthecollapsible sparewheel. #
When thespecif iedtirepr essur ehas been
re ac hed, press onand offswit ch3 onthe
tir einf latio ncom pres sor to0. #
Ifth etir epr essur eis higher than thespeci‐
fi ed pressur e,press pressur ere lease valve 54
8
Wheels andtires