
Electrical fuses
Notesone lectrical fuses
&
WARNING Risk of accident and injury
due to ov erloaded lines
If yo um anipulat eorb ridg eaf aulty fuse or if
yo ur eplace it wit hafuse wit hahigher
amperage, thee lectric line could be overloa‐
ded.
This could result in afire.
#Alwa ys replace faulty fuse swiths peci‐
fi ed ne wfuses conta iningthe cor rect
amperage.
* NO
TEDama gecaused byincor rect fuses
Incor rect fuses ma ycause damag etoelectri‐
cal components or sy stems.
#Onl yuse Mercedes-Benz appr oved
fuse switht he cor rect fus erating.
Blow nfuses must bereplaced wit hfuses of the
same rating ,which youc an recognize bythe colo
rand fus erating. Th efuser atings ar eliste d
in thef use assignmen tdiagram.
Fu se assignment diag ram: onthef use bo xin
th et runk (
→pag e310).
* NO
TEDama geor malfunctions caused
by moisture
Moistur emaycause dama getothee lectrical
sy stem or cause it tomalfunction.
#When thef use bo xisopen, mak esure
th at no moistur ecan enter thef use
box.
#When closing thef use box, mak esure
th at thes eal of thel id is positioned cor‐
re ctly on thef use box.
Ifan ewlyinser tedf use also blo ws,have the
cause trace dand rectifie dataq ualified special‐
is tw orks hop.
Ensur ethe following befor ereplacing afuse:
RThe vehicle is secured agains trolling away.
RAll electrica lconsumer sareswitched off.
RThe ignition is switched off. The electrica
lfus es ar eloc ated in various fuse
bo xes:
RFu se bo xinthe engine compartment on the
driver's side (→pag e308)
RFuse bo xont he driver's side of thec ockpit
(→pag e310)
RFuse bo xinthe front-passenge rfootwell
(→pag e310)
RFuse bo xinthe trunk on ther ight-hand side
of thev ehicle, when vie wedint he direction
of tra vel(
→pag e310)
Fu se bo xinthe engine compartment
Prerequisites
Obser vethen otes on electrical fuses
(
→pag e308).
Ha ve thef ollowing readil yavailable:
RAd ryclo th
RAs crew driver
308
Breakdown assis tance

thes ystem is no toperating properly .The
TPMS malfunction indicator is combined with
th el ow tirep ressur eindicator lamp. When
th es ystem de tects am alfunction, thei ndica‐
to rlamp wil lflash fora pproxima tely am inute
and then remain continuously illumina ted.
This sequence will continue upon subsequent
ve hicle start-ups as longast he malfunction
ex ists.
When them alfunction indicator is illumina‐
te d, thes ystemm aynotbea bletodetect or
signal lo wtirep ressur easi ntended. TPMS
malfunctions ma yoccurf orav ariety of rea‐
sons, includingt he installation of incompati‐
ble replacemen toralternat etires or wheels
on thev ehicle that pr event theT PMS from
functioning proper ly.
Alw aysc hec kthe TPMS malfunction warning
lam pafter replacing one or mor etires or
wheels on your vehicle toensur ethat the
re placemen toralternat etires and wheels
allo wthe TPMS tocontinu etofunction prop‐
er ly.Using atirep ressur esensor ,the sy stem checks
th et irep ressur eoft he tires ins talled on the
ve hicle.
Ne wt irep ressur esensors, e.g. in winter tires,
ar ea utomaticall ytaught-in thef irst tim ethe
ve hicle is driven.
The tir epressur eappears inthem ultifunction
displa y(
→page197).
If th er eisas ubstantia lpressure loss or if the
tir et emperatur eisexcessive, awarning will be
given:
RVi ad ispla ymessages (→page382).
RViat he h warning lam pinthe instrument
clus ter(→pag e410).
It is thed rive r's responsibility tosetthe tire
pressur etotherecommended cold tir epressure
suitable fort he operating situation. Se tthe tire
pressur efor cold tires using atirep ressure
ga uge. Notethat thec orrect tir epressur efor the
cur rent operating situatio nmustfirst be taught-
in to thet irep ressur emonitoring sy stem.
In mos tcases, thet irep ressur emonitoring sys‐
te mw illautom atically updat ethe ne wreference va
lues af tery ou ha vechanged thet irep ressure.
Yo uc an,h ow ever,a lso updat ethe refere nce val‐
ues byrestartin gthe tir epressur emonitoring
sy stem manuall y(
→page318).
Sy stem borders
The tir epressur emonitoring sy stem does not
issue awarning:
RIfth et irep ressur eiss etincor rectly.
RIfth er eisas udden pressur eloss caused, for
ex ample, byaforeign object penetratin gthe
tire.
RIf th er eisam alfunction caused byano ther
ra dio signal source.
Be sur etoalso observ ethe following fur ther
re lated subjects:
RNo tesont irep ressur e(→page312)
Checking thet irep ressur ewitht he tir epres‐
sur em onitoring sy stem
Requ irements
RThe ignition is switched on.
Wheels and tires 317

Changingawheel
Note sons electing, mounting and replacing
tires
Yo uc an ask fori nformation rega rding permitte d
wheel-tir ecombinations at an authorized
Mercedes-Ben zcenter.
&
WARNING Risk of accident duetoi ncor‐
re ct dimensions of wheelsa nd tires
If wheelsa nd tires of thew rong size are
ins talled, thew heel brakes or wheel suspen‐
sion components ma ybedamaged.
#Alwaysr eplace wheels and tires with
th ose that fulfill thes pecification sof
th eo riginal part.
When replacing wheels, mak esuretof itth e
cor rect:
RDesignation
RModel
Whe nreplacing tires, mak esuretoi nstallth e
cor rect:
RDesignation
RManufactu rer
RModel
&
WARNING Risk of accident duet o
exc eeding thes tatedt irel oad rating or
th ea ppr ove dspeed rating
Exceeding thes pecified tir eload rating or
th ep ermissible speed rating ma ylea dtot ire
damage andtothet ires bur sting.
#Therefore, onl yuse tir etypes and sizes
appr ovedfor your vehicle model.
#Obser vethet irel oad rating and speed
ra ting requ ired fory our vehicle.
* NO
TEDama getovehicle and tires due to
non-app rove dt iret ypes and sizes
Fors afet yr easons, onl yuse wheels, tires
and accessories whic hhave been appr oved
fo ry our vehicle byMercedes-Benz.
These tires ha vebeen speciall yadap tedf or
use wit hthe control sy stems, e.g. ABS or
ESP
®,a nd ar emarke dasf ollows:
RMO = Mercedes-BenzO riginal
RMOE = Mercedes-BenzO riginal Extended
(run-flat tires onl yfor cer tain wheels)
RMO1 = Mercedes-Benz Original (onl ycer‐
ta in AMG tires)
Cer tain characteristics, e.g .handling, vehicle
noise emissions or fuel consum ption, may
ot herwise be adversely af fected. In addition,
whe ndriving wi thaload, tir edimension var‐
iations could caus ethe tires tocome into
contact wi th thebody and axle components.
This could result in damag etothe tires or the
ve hicle.
Wheels and tires 331

Onlyuse tires, wheels or accessories tested
and appr ovedbyM ercedes-Benz.
*NO
TERisk todriving saf etyf romr etre a‐
de dt ires
Retreade dtires ar eneith er tested nor recom‐
mended byMercedes-Benz, since pr evious
damag ecanno talway sbed etected on
re treade dtires.
Fo rthis reason drivin gsafet yc anno tbeg uar‐
anteed.
#Do no tuse used ti resify ou ha veno
informatio nabout their pr evious usage.
* NO
TEPossible damag etowheels or tires
when drivin govero bstacles
Larg ewheelsh avealow er tir esection wid th.
The lo werthe tir esection width, theg reater
is ther isk of dama getowheels or tires when
drivingo vero bstacles.
#Av oid obs tacle sord rive part icular ly
carefully.
* NO
TEDama getoelectronic component
parts from theu se of tire-mounting tools
Ve hicles with atirep ressur emonitoring
sy stem: Electronic component parts are
located in thew heel. Tire -mounting tools
should no tbeused in thea reaoft hevalve.
This could otherwise damag ethe electronic
component parts.
#Ha ve thet ires changed at aqualified
specialis tworks hop onl y.
*NO
TEDama getosummer tires at low
ambient temp eratures
Using summer tires at very lowa mbientt em‐
peratures can caus ecrack stof orm, thereby
damaging thet ires permanentl y.
#Attemp eratures belo w45°F(7°C) use
M+S tires.
Ac cessor yparts that ar enotappr ovedfor your
ve hicle byMercedes-Benzort hat arenotbeing
used cor rectl yc an impair ope rating safe ty. Befor
epurch asing and using non-appr oved
accessori es, visitaqualified specialis tworks hop
and inquir eabout:
RSuitability
RLegal stipulations
RFa ctor yrecommendations
Obser vethef ollowing when selecting, mounting
and replacing tires:
ROnl yuse tires and wheels of thes ame type
at ag iven time (summer tires, winter tires,
MOEx tende dtires) and thes ame make.
ROnl ym ount wheels of thes ame size on one
axle (lef tand right).
It is onl ypermissible tomount adiffe re nt
whee lsizeint heevent of aflat tir eino rder
to driv etot he specialis tworks hop.
ROnl ym ount tires of thec orrect size ont othe
wheels.
RVe hicles with atirep ressur emonitoring
sy stem: All mounte dwheels mus tbeequip‐
ped wit hfunctioning sensor sfor thet ire
pressur emonitoring sy stem.
332
Wheels and tires

RAttemp eratures belo w45°F(7°C), use win‐
te rt ires or all-seaso ntires mar kedM +Sfor
all wheels.
Wi nter tires bearing thei snowflak esym‐
bol in addition totheM +S marking pr ovide
th eb estp ossible grip in wintr yroad condi‐
tions.
RFo rM +S tires, only use tires wit hthe same
tread.
RObser vethem aximum permissible speed for
th eM +S tir emounted.
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.
RBreak-in ne wtires at moderat espeeds for
th ef irst 60 mile s(10 0k m).
RReplace thet ires af ters ixyearsatt he latest,
re ga rdless of wear.
RWhen replacing with tires that do no tfea‐
tu re run-flat characteristics: vehicles with
MOExtended tires ar enotequipped wit ha
TIREFIT kit at thef actor y.Equi pthe vehicle
wit haT IREFIT kit af terr eplacing wit htires th
at do no tfeatur erun- flat characteristics,
e.g .winter tires.
Fo rm orei nformation on wheels and tires, con‐
ta ct aq ualified specialis tworks hop.
Be sur etoalso observ ethe following fur ther
re lated subjects:
RNo tesont irep ressur e(→page312)
RTire and Loading Info rmatio nplacard
(→pag e319)
RTire pressur etable (→pag e314)
Note sonr otating wheels
&
WARNING Risk of injury thro ugh dif fer‐
ent whee lsizes
Inter changing thef ront and rear wheels if the
wheels or tires ha vediffere nt dimensions
ma yseverel yimp air thed riving characteris‐
tics.
The wheel brakes or wheel suspension com‐
ponent smayalso be damaged.
#Rotate front and rear wheels only ifth e
wheels and tires ar eofthe same dimen‐
sions.
The wear patte rnsont he front and rear wheels
dif fer:
RFr ont wheels wear mor eonthe shoulder of
th et ire
RRear wheels wear mor einthe center of the
tire
On vehicles that ha vethes ame size front and
re ar wheels,r otatet he wheels according tothe
inter vals in thet irem anufacturer's warranty
book in your vehicle documents. If this is not
av ailable, rotate thet ires every
3000 to6000 mile s(5000to1 0000 km),
depending on thew ear.Ensuret hat thed irection
of rotatio nism aintained.
It is impe rativ etoo bservethei nstruction sand
saf etyn otes on "Wheel change" when doings o.
Wheels and tires333