Page 397 of 521

*
NO
TEDama getoelectronic component
parts from theu se of tyre-fitting tools Ve
hicles with atyrep ressur emonitoring
sy stem: electronic component parts are
located in thew heel. Tyre-fitting tools should
no tbea pplied in thea reaoft hevalve.
The tools could damag ethe electronic com‐
ponent parts. #
Have thet yres changed at aqualified
specialis tworks hop onl y. *
NO
TEDama getosummer tyres at low
ambient temp eratures Using summer tyres at
very lowa mbient
te mp eratures can cause crac kstoform,
th ereb ydamaging thet yres permanentl y.#
Attemp eratures belo w7°Cuse M+S-
tyres. Ac
cessor yparts that ar enotappr ovedfor your
ve hicle byMercedes-Benzora renotb eing used
cor rectl yc an impair theo perating saf ety. Befor
epurch asing and using non-appr oved
accesso ries, visit aqualified specialis tworks hop
and enquir eabout:
R Suitability
R Legal stipulations
R Factor yrecommendations &
WARNING Risk of accident wi thhigh
per form anc etyres
The special tyr etread in combinatio nwith
th eo ptimised tyr ecompound, means that
th er isk of skidding or hydroplaning on wet
ro ads is inc reased.
In addition ,the tyr egripisg reatl yr educed at
al ow outside temp eratur eand tyr erunning
te mp erature. #
Switc hont he ESP ®
and adap tyour
driving stylea ccordingly. #
Use M+S tyres at outside temp eratures
of less than 50 °F. Obse
rvet he following when selecting, fitting and
re placing tyres:
R Countr y-specific requirements fort yre
appro valthat define aspecific tyr etype for
yo ur vehicle.
Fu rthermore, theu se of cer tain tyr etypes in
cer tain regions and areas of operation can
be highl ybeneficial.
R Onlyuse tyres and wheels of thes ame type
(summer tyres, winter tyres, MOEx tended
tyres) and thes ame make.
R Onlyfit wheel softhe same size on one axle
(lef tand right).
It is onl ypermissible tofitad iffe re nt wheel
size in thee vent of aflat tyr einorder to
driv etot he specialis tworks hop.
R Onlyfit ty resoft he cor rect size ont othe
wheels.
R Do no tmakea nymodifications totheb rake
sy stem, thew heels or thet yres.
The use of shims or brak edusts hields is not
permitted and ma yinva lidat ethe vehicle's
ge neral operating pe rmit. 394
Wheels and tyres
Page 398 of 521

R
Vehicles with atyrep ressur emonitoring
sy stem: allfitted wheels mu stbe equipped
wit hfunctioning sensor sfor thet yrep res‐
sur em onitoring sy stem.
R Attemp eratures belo w7°C, use winter tyres
or all-season tyres mar kedM +Sfora ll
wheels.
Wi nter tyres bearing thei snowflake
symbol in addition totheM +S marking pro‐
vide theb estp ossible grip in wintr yroad
conditions.
R ForM +S tyres, only use tyres wit hthe same
tread.
R Obser vethem aximum permissible speed for
th eM +S tyres fitted.
If th is is belo wthe vehicle's maximum speed,
th is mus tbeindicated in an appropriat elabel
in thed rive r's field of vision.
R Runinn ewtyres at moderat espeed sfor the
fi rs t1 00 km.
R Replace thet yres af ters ixyearsatt he latest,
re ga rdless of wear. R
When replacing with tyres that do not
fe atur erun-flat characteristics: vehicles
wit hM OExtended tyres ar enotequipped
wit haT IREFIT kit at thef actor y.Equi pthe
ve hicle wit haTIREFIT kit af terr eplacing with
tyres that do no tfeatur erun- flat characteris‐
tics, e.g .winter tyres.
Fo rm orei nformation on wheels and tyres, con‐
ta ct aq ualified specialis tworks hop.
Be sur etoalso obse rvet he following fur ther
re lated subjects:
R Notesont yrep ressur e(→pag e385)
R Tyre pressur etable (→ page386) Note
soni nterchanging wheels &
WARNING Risk of inju rythro ugh dif fer‐
ent whee lsizes
Inter changing thef ront and rear wheels if the
wheels or tyres ha vediffere nt dimensions
ma yseve rely impair thed riving characteris‐
tics. The disk brakes or wheel suspension compo‐
nents ma yalso be damaged. #
Rotate front and rear wheels on lyifthe
wheels and tyres ar eofthe same
dimensions. Inter
changing thef ront and rear wheels if the
wheels or tyres ha vediffere nt dimensions can
re nde rthe general operating pe rmit in valid.
The wear pat tern sont he front and rear wheels
dif fer:
R Front wheels wear mor eonthe shoulder of
th et yre
R Rear wheels wear mor einthe centre ofthe
tyre
On vehicles wit hthe same front and rear wheel
size, youc an inter chang ethe wheels every
5,000 to10,000 km, dependin gonthewear.
Ensur ethe direction of rotatio nism aintained for
th ew heels.
It is imperativ etoobservethei nstruction sand
saf etyn otes on "Wheel change" when doin gso. Wheels and tyres
395
Page 406 of 521

Ve
hicles with atyrep ressur emonitoring
sy stem: foraf ewminutes af terac ollapsible
spar ewhee lisf itted, thes ystemm aystill
displa ythe tyr epressur eoft heremo ved
wheel.
Be sur etoalso obse rvet he following fur ther
re lated subjects:
R Notesont yrep ressur e(→pag e385)
R Tyre pressur etable (→ page386) Re
moving the collapsibl espar ew heel The collapsible spar
ewheel is secured in thec ol‐
lapsible spar ewheel bag in theb oot. #
Obser vethei nformation on mounting tyres
(→ pag e392). #
Open theb oot. #
Detach thef astening stra ps. #
Unhook ther etainin gspring hook softhefas‐
te ning stra ps from theb rack ets. #
Remo vethee mer gency spa rewheel bag
to ge ther wit hthe collapsibl espar ew heel. #
Open thee mer gency spa rewheel bag and
re mo vethec ollapsible spar ewheel. Inflating
thec ollapsible spa rewheel Re
quirements:
R Mount thec ollapsible spar ewheel as descri‐
bed. (→ page400)
R Remo vethet yrei nflation compressor from
th es towa ge well under theb ootfloor.
(→ pag e366)
* NO
TEDama getothec ollapsible spare
wheel when lo wering thev ehicle Lo
we ring thev ehicle without pr eviously
inflatin gthe collapsibl espar ew heel can
damag eits rim. #
Inflat ethe collapsibl espar ew heel using
th et yrei nflation compressor before
lo we ring thev ehicle. *
NO
TEOverheating du etothe tyr einfla‐
tion compressor running tool ong #
Do no trun thet yrei nflation compres‐
sor forl onger than tenm inutesw ithout
inter ruption. #
Pull connec tor4 and theh ose out of the
housing. #
Unscr ew thec ap from thev alveont he col‐
lapsible spar ewheel. Wheels and tyres
403
Page 447 of 521

Ty
res Displa
ymessages
Possible causes/consequences and M
MSolutions
Tyre pressure Check tyres *T
he tyr epressur eloss warning sy stem has de tected asignificant los sinpressure. &
WARNING Risk of an accident du etoinsufficient tyr epressure
Ty resw ithi nsuf ficient tyr epressur eposet he following risks:
R The tyres ma yburst,e speciall yasthe load and vehicle speed increase.
R The tyres ma ywear excessively and/or une venly, whic hmaygreatl yimp air tyr etraction.
R ‑The drivin gcharacteristics, steering and braking ma ybegreatl yimp aired.
Yo uc ouldthen lose control of thev ehicle. #
Obser vether ecommende dtyrep ressures. #
Adjus tthe tyr epressur eifn ecessar y. #
Stop thev ehicle, paying attention toroad and traf ficc onditions. #
Chec kthe tyr epressur eand thet yres. #
When thet yrep ressur eisc orrect, restar tt he tyr epressur eloss warning sy stem .
Check tyre pressures then
restar tRun Flat Indicator *T
he tyr epressur eloss warning sy stem generated adispl ay messa geand has no tbeen restar teds ince. #
When thet yrep ressur eisc orrect, restar tt he tyr epressur eloss warning sy stem .
Run Flat Indicator inopera-
tive *T
he tyr epressur eloss warning sy stem is malfunctioning. #
Consult aqualified specialis tworks hop. 444
Displaymessa gesa nd warning/indicator lamps