ESP MERCEDES-BENZ SL CLASS 2020 Owners Manual

The
operating safetyofyour vehicle maybe
restr icted.
You could losecontrolofthe vehicle, for
example:
R when braking
R in the event ofabrupt steeringmaneuvers
and/or whenthevehicle's speedisnot
adapted tothe road condit ions
There isarisk ofan accident .
In the event ofashort circuit orasimilar
incident ,cont actaqualified specialist work-
shop immediately. Donot drive anyfurther.
You should haveallwork involving thebat-
tery carried outataqualified specialist
workshop.
For further informationabout ABSandESP®
,
see (Ypage 60)and (Ypage 65). G
WARNIN
G
Elect rostat icbuild-up canlead tothe crea-
tion ofsparks, whichcouldignite thehighly
explosive gasesofabattery. Thereisarisk
of an explosion.
Before handling thebattery, touchthevehi-
cle body toremove anyexistin gelectrost atic
build-up.
The highly flammable gasmixt ureforms when
charging thebattery aswell aswhen jump-
start ing.
Always makesurethatneither younorthebat-
tery iselectrost aticallycharged. Abuild-up of
electrost aticcharge canbecaused, forexam-
ple:
R by wearing clothingmade fromsynthet ic
fibers
R due tofrict ionbetween clothingand seats
R ifyou push orpull thebattery acrossthe
carpet orother synthet icmaterials
R ifyou wipe thebattery withacloth G
WARNIN
G
During thecharging process,abattery pro-
duces hydrogen gas.Ifashort circuit occurs
or sparks arecreated, thehydrogen gascan
ignite. Thereisarisk ofan explosion. R
Make surethatthepositive terminalof a
conn ected battery doesnotcome into
cont actwith vehicle parts.
R Never placemetal object sor tools ona
battery.
R Itis important thatyouobserve the
described orderofthe battery terminals
when connectin gand disconn ectingabat-
tery.
R When jump-st arting,makesurethatthe
battery poleswithidentical polarityare
conn ected.
R Itis particularly importanttoobserve the
described orderwhen connectin gand dis-
conn ectin gthe jumper cables.
R Never connectordisconn ectthe battery
termin alswhile theengine isrunnin g. G
WARNIN
G
Batt eryacid iscaustic. Thereisarisk of
injury.
Avoid contactwith skin, eyesorclothin g.Do
not inhale anybattery gases.Donot lean
over thebattery. Keepchildren awayfrom
batteries. Washawaybattery acidimmedi-
ately withplenty ofclean water andseek
medical attention. H
Environmental
note Batt
eries containpollutants.
It is illegal todispose of
them withthehousehold
rubbish. Theymust becol-
lected separately anddis-
posed ofinan environ men-
tally responsible recycling
system. Dispose
ofbatteries inan
environ mentallyresponsible
manner .Take discharged
batteries toaqualified spe-
cialist workshop ortoacol-
lection pointforused bat-
teries. 286
Bat
tery (vehicl e)Breakdown assistance

!
Have
thebattery regularlychecked ata
qual ified speciali stworkshop.
Comply withtheservice intervals inthe
Maintenance Booklet,orcont actaqual ified
speciali stworkshop formore information.
! Alway
shave work onbatteries carriedout
at aqual ified speciali stworkshop.
Should it,inexceptional circumstances, be
absolu telynecessary todisconnect the12-
volt battery yourself,please observe thefol-
lowing:
R Secure thevehicle toprevent itfrom roll-
ing awa y.
R Switch offthe ignition.
R Disconn ectthe negative terminalfirstand
then thepositive terminal.
After thework hasbeen done, install the
battery andreplace thecover ofthe positive
terminal clampfirmly.
Comply withsafety precautions andtake pro-
tect ivemeasures whenhandling batteries. Risk
ofexplosion. Fire,
open flames andsmoking are
prohibited whenhandling thebat-
tery. Avoid creating sparks. Battery
acidiscaustic. Avoidcon-
tact with skin, eyesorclothing.
Wear suitabl eprotective clothing,
especial lygloves, apronandface-
guard.
Rinse anyacid spills immediately
with clear water. Contact aphysi-
cian ifnecessary. Wear
eyeprotection. Keep
children away. Observe
thisOperator's Manual.
For safety reasons, Mercedes-Benz recom-
mends thatyouonly usebatteries whichhave been
tested andapproved foryour vehicle by
Mercedes-Benz .These batteries provide
increased impactprotection toprevent vehicle
occupants fromsuffering acidburns should
the battery bedamage din the event ofan
accident.
In order forthe battery toachieve themaxi-
mum possible servicelife,itmust alwaysbe
sufficiently charged.
Like other batteries, thevehicle battery may
discharge overtime ifyou donot use thevehi-
cle. Inthis case, havethebattery disconnec-
ted ataqual ified speciali stworkshop. Youcan
also charge thebattery withacharger recom-
mended byMercedes-Benz .Contact aqual i-
fied speciali stworkshop forfurther informa-
tion.
Have thebattery condition ofcharge checked
more frequently ifyou usethevehicle mainly
for short tripsorifyou leave itstanding idle
for alengthy period.Consult aqual ified spe-
cialist workshop ifyou wish toleave yourvehi-
cle parked foralong period oftime.
Remove theSmartKey ifyou park thevehicle
and donot require anyelectrical consumers.
The vehicle willthen usevery little energy,
thus conserving batterypower.
After aninterruption tothe power supply,e.g.
due toadischarged battery,youmust reset
the clock (seetheDigital Operator's Manual). Charging
thebattery G
WARNING
During charging andjump-startin g,explosive
gases canescape fromthebattery. Thereis
a risk ofan explosion.
Particularl yavoid fire,open flames, creating
sparks andsmoking. Ensurethereissuffi-
cient ventilation whilecharging andjump-
starting. Donot lean over abattery. G
WARNING
Battery acidiscaustic. Thereisarisk of
injury.
Avoid contactwith skin, eyesorclothing. Do
not inhale anybattery gases.Donot lean
over thebattery. Keepchildren awayfrom
batteries. Washawaybattery acidimmedi- Bat
tery (vehic le)
287Breakdown assistance
Z

ate
lywith plentyof cle an wate rand seek
medi calattent ion. G
WAR
NING
A disc harg edbat tery can freez eat temper a-
tur es below freez ing poin t.When jump-start-
ing theveh icle orchargin gth ebat tery,
gases canescape from thebat tery. Ther eis
a risk ofan exp losio n.
Allo wthefroz en bat tery to thaw out befo re
ch argin git or jum p-starting.
! On
lyuse battery charge rswith amax imum
ch argin gvolt age of14 .8V.
! On
lych arge thebat tery usin gth ejum p-
st art ing con nectionpoin t.
The jump-startingcon nectionpoin tis in the
eng inecom partmen t.
If th eind icat or/warn inglamps donotlight up
at low temper atures,itis ver ylike lythat the
disc harg edbat tery has froz en. Inthis cas e,
you may neither charge thebat tery norjum p-
st art theveh icle.The servicelife ofath awed-
out battery may beshor ter. The start ing char-
act eris ticscan beimpair ed,part icular lyat low
te mper atures.Hav eth eth awed- outbattery
ch eck edataqualifi edspec ialist workshop.
Read thebat tery charge r'soper atingins truc-
tio ns befo rechargin gth ebat tery.
X Open thehood .
X Con nectth ebat tery charge rto theposit ive
te rm inal and ground pointin thesame order as
when connectingth edon orbat tery inthe
jum p-startingproc edure (Ypage 288). Rep
lacing the12 Vbat tery
Obse rveth eno teson the12 Vbat tery
(Y page 285).
Mer cedes-Ben zrec omm endsth at you have
th e12 Vbat tery repl aced ataqualifi edspe-
cialis twork shop,e.g .at an auth orized
Mer cedes-Ben zCent er.
If you want torepl ace thebat tery yours elf,
obse rveth efoll owin gno tes:
R Always replace adefe ctive battery with a
bat tery whic hmeet sth espec ificrequi re-
men tsof theveh icle.
The vehicle isequippe dwith anAGM
(Ab sorben tGlass Mat)te ch no logy battery.
Full vehicle function alit yis on lyguaran teed
with anAGM battery. For safe tyreas ons,
Mer cedes-Ben zrec omm endsth at you only
use batteries whic hhave been tested and
appro vedforyour vehicle byMer cedes-
Ben z.
R Use detach able partssuc has breat her
hose s,ang led con nectingpiec esorterm inal
cov ers from thebat tery whic his to be
repl aced .
R Mak esure that theven those isalways con-
nec tedto theorig inal open ingonthebat -
te ry side.
R Inst all existing orsupplie dcel lcaps topre-
ven tgases orbat tery acid from escapin g.
R Mak esure that thedet ach able partsare
con nectedagain inthesame way. Jum
p-st ar tin g
For thejum p-startingproc edure ,use onlythejum p-startingcon nectionpoin tin theeng inecom -
part men t,con sisting ofaposit iveterm inal and agro und point. G
WAR
NING
Bat tery acid iscaus tic.Ther eis arisk ofinjury.
Av oid contactwith skin, eyes orclo thing .Do notinh ale any battery gases .Do notlean overth e
bat tery. Keep childre naway from batteries .Wash awaybattery acid immediat elywith plentyof
cle an wate rand seek medicalattent ion. 288
Jum
p-st ar tin gBreak down assistance

When
towing away,useatowing ropeora
towing barwith both axles onthe ground. Do
not use anytow barsystems. Towing
thevehicle withtherear axle
raised
! The
ignition mustbeswitched offifyou
are towing thevehicle withtherear axle
raised. Interven tionbyESP®
could other-
wise damage thebrake system.
! Vehicles
withautomatic transmission must
not betowed withtherear axle raised. The
vehicle/t railercombin ationmayotherwise
swerve oreven rollover. Tr
anspor tingthevehicle
Vehicles withautomat ictransmission !
When
thevehicle isloaded fortran sport,
the fron tand rear axles mustbestation ary
and onthe same transportat ionvehicle.
Position ingover theconn ection pointofthe
tran sport vehicle isnot permitt ed.The drive
train mayotherwise bedamaged.
All vehicles !
You
may onlysecure thevehicle bythe
wheels, notbyparts ofthe vehicle suchas
axle orsteerin gcompon ents.Other wise, the
vehicle couldbedamaged.
The towing eyecan beused topull thevehicle
ont oatrailer ortran sporter fortran sportin g
purposes. X
Turn theSmart Keytoposition 0048inthe igni-
tion lock.
X Shift thetran smission toposition 005C.
As soon asthe vehicle hasbeen loaded:
X Preven tthe vehicle fromrolling awayby
applying theelectr icparking brake.
X Shift thetran smission toposition 005D.
X Turn theSmart Keytoposition 0092inthe igni-
tion lock andremove it.
X Secure thevehicle. Tow-sta
rting (emergency engine
star ting)
! Vehicles
withautomatic transmission must
not betow-s tarted. You could otherwise
damage theautomatic transmission.
You canfind inform ationon"Jump-start ing"at
(Y page 288). Fuses
Impor
tantsafety notes G
WARNIN
G
If you manipulate orbridge afaulty fuseorif
you replace itwith afuse withahigher
amperage, theelectr iccables couldbeover-
loaded. Thiscould result inafire. There isa
risk ofan accident andinjury.
Always replace faultyfuseswiththespeci-
fied new fuses having thecorr ectamperage.
Blown fusesmustbereplaced withfuses of
the same rating,which youcan recogn izeby
the color andvalue. Thefuse rating sare listed
in the fuse allocation chart.
The fuse allocation chartislocated inthe vehi-
cle tool kitinthe stowage compartmentunder
the trun kfloor (Ypage 280).
If anewly insertedfuse alsoblows, havethe
cause tracedand rectified ataqualified spe-
cialist workshop, e.g.anauthorized Mercedes-
Benz Center .
! Only
usefuses thathave been approved
for Mercedes- Benzvehicles andwhich have
the corr ectfuse rating forthe system con- Fuses
293Breakdown assistance Z

Imp
ortant safety notes G
WAR
NING
If you installwhee lsand tires withinc orrect
dime nsion s,theser vicebrak eor whee lsus-
pen sion compo nentsmay bedamag ed.
Ther eis aris kof an acc iden t.
Alw ays replace whee lsand tires withon es
th at comply withth espec ificationsof the
ori gin alpart .
When replaci ngwhee ls,pay attention tothe:
R De sign ation
R Mode l
When replaci ngtires ,pay attention tothe:
R De sign ation
R Man ufacturer
R Mode l G
WAR
NING
A flat tire will severelyaff ectth edriv ing
ch arac teris tics as well asthest eer ing and
brak ingoftheveh icle. Ther eis aris kof an
acc iden t.
Tir es wit hout run-flat charac teris tics :
R Do notdriv eon withaflat tire.
R Chan getheflat tire imm ediat elywithan
eme rgencyspar ewhee lor spar ewhee l.
Alt ern ativel y,co nsult aqualif iedspec ialist
wor kshop.
Tir es wit hrun -flat charac teris tics :
R Obs erveth einf orm ation and warn ing
no teson MOE xten ded tires (run -flat tires ).
Ac cesso ries that are notappr ovedfor your
veh icleby Mer cedes- Benzor are notbein g
used correc tly can impa irth eoper ating safety.
Bef ore purc hasingand usingno n-appr oved
acc essories, visitaqualif iedspec ialist work-
sho pand askabout :
R suit abilit y
R legal stipulat ions
R fac tory rec omm endat ions
Fur ther inform ation reg ardi ngwhee lsand tires
can befoun dund er"Whee l/tire combin ations"
(Y page 321). You
canaskforinform ation reg ardi ngper mit-
te dwhee l/tire combin ationsat an auth orized
Mer cedes- BenzCen ter.
In for mat ionontire pre ssur ecan befoun d:
R on theTir eand Load ingInfor mat ionplac ard
on theB- pillar onthedriv er'sside
(Y page 306)
R in thetire pre ssur etab lein thefuel filler flap
(Y page 146)
R in the"Tir epre ssur e"sec tion Op
era tion Infor
mation ondrivin g
Chec kth etire pre ssur ewhen theveh icleis
heav ilyladen andadjust prio rto atrip.
While driving,pay attention tovibr ations,
no ises andunus ualhan dlingch arac teris tics ,
e. g. pullin gto oneside .This may indicat eth at
th ewhee lsor tires are damag ed.Ifyou sus-
pec tth at atire isdef ective, reduce your speed
imm ediat ely.Stop theveh icleas soo nas pos -
sible tocheckth ewhee lsand tires fordam-
age. Hidden tire damag eco uld also becaus ing
th eunus ualhan dlingch arac teris tics .If you
fin dno sign sof damag e,hav eth etires and
whee lsch ecke dat aqualif iedspec ialist work-
sho p.
When parkingyour vehicle, mak esur eth at the
ti res donotget deform edbythecur bor other
obs tacles. Ifth ey can notbe avoi ded, drive
ove robs tacles suc has cur bsslow lyand atan
obt use angle.Other wise, youmay damag eth e
whee lsor tires . Reg
ularcheck ingofwheels andtires G
WAR
NING
Dam aged tires can caus etire inflat ion pres-
sur eloss .As ares ult,you could lose control
of your vehicle. Ther eis aris kof acc iden t.
Chec kth etires regularly forsign sof dam-
age and replace anydamag edtires imm edi-
ate ly. 296
Op
era tionWh eels andtire s

Chec
kwheel sand tires for damag eat least
on ce amon th.Chec kwheel sand tires after
driv ingoff-road oron roug hroad s.Dam aged
wheel scan caus ealoss oftirepre ssur e.Pay
part icular attentio nto damag esuc has:
R cut sin thetir es
R punc tures inthetir es
R tears inthetir es
R bulges ontires
R def orm ationor sev ere corrosio non wheel s
Regular lych eck thetir etread dept hand the
co ndi tionof thetread across thewhole width
of all tires (Y page 297). Ifne ces sary, turnth e
fr on twheel sto full lockin ord erto ins pec tth e
inn erside ofthetir esurf ace.
All wheel smust haveavalv ecap topro tect
th evalv eagain stdirt and mois ture.Do not
moun tanyt hingon to thevalv eot her than the
st and ard valvecap orother valvecaps
appro vedbyMer cedes-Ben zfor your vehicle.
Do notuse anyother valvecaps orsyst ems ,
e.g .tir epre ssur emon itorin gsyst ems .
Regular lych eck thepre ssur eof all thetir es
part icular lyprio rto lon gtrips. Adjus tth etir e
pre ssur eas neces sary (Ypage 299).
The servicelife oftires depen ds,amon got her
th ing s,on thefoll owin gfac tors:
R Dr ivin gst yle
R Tire pressur e
R Dis tan cecover ed Not
eson tiretread G
WAR
NING
If th ere isins ufficie nttiretread, thetir etrac-
tio ndec reas es.The tiretread isno longer
able todiss ipatewate r.This increas esthe
ris kof hydr oplan ingwhen theroad surface
is wet ,part icular lywhen theveh icle'sspee d
is no tadapt edtotheroad condi tions.Ther e
is aris kof an acc iden t.
When thetir epre ssur eis toohigh ortoo
low, tires may wear differe ntly at diff ere nt
poin tson thetir etread. Therefore, regularly
ch eck thetir etread dept hand theco ndi tion
of thetread across thewhole widthof all
tir es. Min
imum tiretread dept hon :
R Sum mer tires: 00CEin(3 mm)
R M+S tires: 00CFin(4 mm)
For safe tyreas ons,have thetir es rep lace d
bef ore they reac hth elegally prescribe dmin -
imum tiretread dept h. Mark
ing0043sho wswher eth ebar indicat orfor
tr ead wear (arrow) isint egr atedint oth etir e
tr ead.
Tre adwear indicat ors (TWI )are required by
law. Sixindicat ors are posi tionedon thetir e
tr ead. They arevisible once atread dept hof
appr oximat ely00CD in(1.6 mm)ha sbe en
re ach ed. Ifth is isthecas e,thetir eis so worn
th at itmust berepl aced . Select
ing,mou nting and replacing
tir es
Tire sand wheels
R On lymoun ttir es and wheels ofthesame
type andmake.
Ex cep tion:itis perm issibleto moun ta dif-
fer ent type ormak ein theeven tof aflat
tir e. Obse rveth e"MOE xtend edtires (tires
with run-flat charac terist ics)"sec tion
(Y page 281).
R On lymoun ttir es ofthecor rectsiz eon to the
wheels .
R Break innew tires atmode ratespee dsfor
th efir st 60 miles (100km). Thenew tires
on lyreac hth eir full perf ormanceaft erthis
dist ance. Oper
ation
297Wheels andtires Z

R
Do not drive with tire swh ich have too little
trea dde pth .Thi ssigni ficantl yred uce sthe
tra ctio non wetroa ds(hyd rop laning ).
R Re place thetiresaf ter six ye arsat the lat-
est, regardless ofwe ar. MOE
xtende dtire s(ti res with run-f lat
prope rties)
Wi th MOExte ndedtire s(ti res with runfla t
cha racteri stics) ,yo ucan conti nuetodrive your
veh icleeve nif the reisatota llo ss ofpre ssu re
in one ormor etire s.
MOExte ndedtire sma yonl ybe used incon-
juncti onwith an acti vetire pressu remoni tor
and onlyon wheelssp eci fically teste dby
Me rced es-Benz.
Note son drivin gwi th MOExte ndedtire swi th a
fla ttire (Ypage 281 ).
Veh icles equipp ed with MOExte ndedtire sar e
not equipp ed with aTIR EFIT kitatthe factory .
It is the refore reco mme ndedtha tyo uad ditio n-
al ly eq uip yo ur veh iclewi th aTIR EFIT kitifyo u
mou nttire stha tdo not featureru n-fl atcha rac-
teri stics, e.g.wi nter tires.ATIR EFIT kitcan be
ob tained fromaqu alifi ed speci alistwo rksh op. Win
terope ratio n Ge
neral notes
Hav eyo ur veh iclewi nter-p roofed ataqu alifi ed
sp eci alistwo rksh opatthe onse tof winter.
Ob ser vethe note sin the "Cha ngi ng awh eel"
sec tion(Y page 316 ). Dri
ving with summe rtire s
At temp eratures below 45 ‡(+7 †),su mme r
tire slo se elas tici tyand therefore tractio nand
bra king powe r.Ch ang ethe tireson your veh i-
cle toM+S tires.Us ing su mmer tiresatvery
cold tempera turescould cause cracks toform,
thereby damagingthetires perma nently.
Mercede s-Benzcannot acceptresponsi bility
for this type ofdama ge. G
WARNING
Damage dtires cancause tireinflati onpres-
sure loss. Asaresul t,you could losecontrol
of you rvehicl e.There isarisk ofaccide nt. Check
thetires regularlyforsigns ofdam-
age and repla ceany dama gedtires immedi -
ately . M+S
tires G
WARNING
M+S tireswithatire tread depth ofless than
00CF in(4 mm) arenot suitable foruse inwin-
ter and donot provid esuffici enttraction.
There isarisk ofan accide nt.
M+S tireswithatread depth ofless than 00CF
in (4 mm) must berepla cedimmedi ately.
At temperatu resbelo w45 ‡(+7 †), use win-
ter tires orall-season tires.Bothtypes oftire
are identifi edbythe M+S marking.
Only winter tiresbearing the004D snowfla ke
symbo lin add ition tothe M+S marking provide
the best possi blegrip inwintry roadcondi-
tions.
Only these tireswillall ow drivi ngsafety sys-
tems suchasABS andESP®
to function opti-
mall yin winter. Thesetireshave been devel-
oped specifi callyfor drivi nginsnow.
Use M+S tiresofthe same make andtread on
all whee lsto maintai nsafe handl ingcharacter-
istics.
Alwa ysobserve themaximu mpermis sible
speed specifiedfor the M+S tiresyouhave
mounted.
When youhave mounted theM+S tires:
X Check thetire pressu res(Ypage 302).
X Resta rtthe tire pressu remonitor
(Y page 304). Snow
chains G
WARNING
If snow chains areinstall edtothe front
whee ls,they maydrag against thevehicl e
body orchassi scomponents. Thiscould
cause damagetothe vehicl eor the tires.
There isarisk ofan accide nt. 298
Winter
operationWheelsand tires

To
avoid hazardous situations:
R never install snowchains tothe front
wheels
R alway sinstall snowchains inpairs tothe
rear wheels.
For safety reasons, Mercedes- Benzrecom-
mends thatyouonly usesnow chains that
have been specially approved foryour vehicle
by Mercedes- Benz,or are ofacorrespon ding
standard ofquality. Formore inform ation,
please contactaqualified specialist workshop.
If you inten dto mount snowchains, please
bear thefollowing pointsinmind:
R Snow chains maynotbemounted onall
wheel/tire combinations.Permissible
wheel-tire combinations(Ypage 321).
R Only usesnow chains whendriving onroads
completely coveredbysnow. Remove the
snow chains assoon aspossible whenyou
come toaroad thatisnot snow-c overed.
R Local regulations mayrestrictthe use of
snow chains. Observe theappropriate regu-
lations ifyou wish tomount snowchains.
R Do not exceed themaximum permissible
speed of30 mph (50km/ h).
R On vehicles withActive Body Control (ABC),
if snow chains havebeen installed, youmust
drive ataraised vehicle level(Ypage 170).
You may wish todeactivate ESP®
when pulling
away withsnow chains installed (Ypage 66).
You canthereby allowthewheels tospin ina
cont rolled manner ,achieving anincreased
driving force(cuttingaction). Tire
pressur e Tire
pressur especifications
Import antsafety notes G
WARNIN
G
Underinf latedoroverinflat edtires pose the
following risks:
R the tires mayburst, especially asthe load
and vehicle speedincrease.
R the tires maywear excessiv elyand/or
unevenly, whichmaygreatly impairtire
tract ion.
R the driving charact eristics, aswell as
steerin gand braking, maybegreatly
impaired.
There isarisk ofan accident .
Follow recomm endedtireinflation pressures
and check thepressure ofall the tires
including thespare wheel:
R mont hly,atleast
R ifthe load changes
R before beginning along journey
R under different operating conditions,e.g.
off- road driving
If necessary, correctthe tire pressure.
The data onthe Tire andLoading Information
placard andtirepressure tableshown hereare
examples. Tirepressure specification sare
vehicle-spec ificand may deviate fromthedata
shown here.Thetirepressure specification s
that arevalid foryour vehicle canbefound on
the Tire andLoading Information placard and
tire pressure tableonthe vehicle.
General notes The
recomm endedtirepressures forthe tires
mounted atthe factor ycan befound onthe
labels described here.
Further informationontire pressures canbe
obtained ataqualified specialist workshop. Tir
epr essure
299Wheelsandtires Z

Tire
andLoadin gIn fo rmatio nplac ard 0043
Recomm endedtire pressu res
The Tire and Loading Info rma tionplaca rdison
the B-pillar on the driver 'sside (Ypage 306 ).
The Tire and Loading Info rma tionplaca rdcon-
tai ns the reco mme ndedtire pressu res forcold
tire s.The reco mme ndedtire pressu res are
va lid for the maxim um permi ssible load and up
to the maxim um permi ssible veh iclesp ee d.
Tire pres sure table The
tirepressu retab leison the inside of the
fu el fillerfla p. Itsho wsthe tire pressu refor all
tire spe rmi tted atthe factory forthisveh icle;
see illu stra tion(e xam ple) . The
tirepressu retab leconta insthe reco m-
mend edpre ssu res forcoldtire sfor vario us
op era ting cond itions, i.e.di ffe ringload and
sp ee dcond itions.
If atire size pre ced esatire pressu re,the fol-
lo wi ng tire pressu reinfo rma tionis onl yva lid
for thattire size; see illu stra tion(e xam ple) . The
load cond itions "partia lly la de n" and "ful ly
la de n" arede fine din the tablefor diffe rent
num bers of occu pants and amounts oflug-
ga ge .The actu alnum berof sea tsma ydi ffe r. Some
tirepressu retab lessho wonl ythe rim
di am ete rsins tea dof the fulltire size, e.g.R18 .
Ri m diam ete ris pa rtof the tire size and canbe
fou ndonthe tire side wa ll(Y page 310 ).
If the tire pressu res have been set tothe lowe r
va lues for lighte rlo ad sand /or lowe rroa d
sp ee ds,the pressu res should be res etto the
hi ghe rva lues:
R ifyo uwa ntto drive with an incr eased load
and /or
R ifyo uwa ntto drive athighe rroa dsp ee ds
The tirepressu res forincr eased load sand /or
hi ghe rroa dsp ee ds,sho wninthe tire pressu re
tab le,ma yha ve aneg ative effect ondrivin g
comf ort.
If the tire pressu reisnot setcorr ectly,thi scan
le ad toan exce ssive build-u pof heat and a
su dd en loss ofpre ssu re.
For mor einfo rma tion,conta ctaqu alifi ed spe-
cia list wo rksh op. 30
0 Tire
pres sureWhe elsand tires

Imp
ortant noteson tire pressu re G
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If th etire pre ssur edro psrep eatedly, the
whee l,valv eor tire may bedamag ed.Tire
pre ssur eth at istoolow may result inatire
blow- out.Ther eis aris kof an acc iden t.
R Chec kth etire for foreign objects.
R Chec kwhet herthewhee lis losi ngair or
th evalv eis leak ing.
If you areunab leto rec tify thedamag e,con-
tac ta qualif iedspec ialist workshop. G
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NING
If you fituns uitable accessories onto tire
valv es,thetire valv esmay beove rloaded
and malf unction ,whic hcan caus etire pre s-
sur eloss .Due totheir desi gn,ret rofitte dtire
pre ssur emon itors keep thetire valv eopen .
This canalso result intire pre ssur eloss .
Ther eis aris kof an acc iden t.
On lyscrew thest and ard valvecap orother
valv ecap sappr ovedby Mer cedes- Benzfor
your vehicleon to thetire valv e.
Use asuit able pressur egauge tocheckth e
ti re pre ssur e.The outerappear anceof atire
does notper mit any reliable conclusio nabout
th etire pre ssur e.On veh icles equipp edwith
th eelec tron ictire pre ssur emon itor, thetire
pre ssur ecan bechecke din theon -board com-
put er.
The tire tempe rature and pressur einc reas e
when theveh icleis in mot ion.This isdepe nd-
en ton thedriv ingspee dand theload.
Ther efore, you should onlyco rrec ttire pre s-
sur eswhen thetires are cold.
The tires are cold:
R ifth eveh iclehas been parkedwithth etires
out ofdire ctsun lightfor atleast three hour s
and
R ifth eveh iclehas notbeen drivenfurther
th an 1mile (1.6km)
The tire tempe rature chang esdepe nding on
th eout side tempe rature, theveh iclespee d
and thetire load. Ifth etire tempe rature
ch ang esby 18 ‡(10 †), thetire pre ssur e
ch ang esby appr oximat ely10kPa(0. 1bar/
1. 5psi) .Tak eth is int oacc oun twhen checkin g th
epre ssur eof warm tires .On lyco rrec tth e
ti re pre ssur eif it is toolow forthecur ren t
oper ating cond ition s.Ifyou checkth etire
pre ssur ewhen thetires are warm ,th eres ult-
ing value willbehigh erthan ifth etires were
co ld. This isno rm al. Do notred uce thetire
pre ssur eto thevalue specifiedfor cold tires .
The tire pre ssur ewould other wise betoolow.
Obs erveth erec omm ended tire pre ssur esfor
co ld tires :
R on theTir eand Load ingInfor mat ionplac ard
on theB- pillar onthedriv er'sside
R in thetire pre ssur etab leon theins ide ofthe
fuel filler flap Und
erinflated orover inflated tires
Und erinflated tires G
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Tir es wit hpre ssur eth at istoolow can over-
heat andburs tas aco nsequen ce.In addi-
ti on ,th ey also suffer from exce ssiv eand /or
irr egular wear,whic hcan severelyimpa irth e
brak ingproperties and thedriv ingcharac ter-
ist ics .Ther eis aris kof an acc iden t.
Av oid tire pre ssur esthat are toolow inall
th etires ,inc ludin gth espar ewhee l.
Un der inflat ed tires may:
R ove rheat,leadin gto tire def ects
R adve rselyaff ecthan dling
R wear exce ssiv elyand /orune venly
R hav ean adve rseeffecton fuel consumpt ion
Over inflated tires G
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Tir es wit hex ce ssiv elyhigh pressur ecan
burs tbec ause they are damag edmor eeas-
ily by road debris,pot hole set c. In addit ion,
th ey also suffer from irregular wear,whic h
can severelyimpa irth ebrak ingproperties
and thedriv ingcharac teris tics .Ther eis a
ris kof an acc iden t.
Av oid tire pre ssur esthat are toohigh inall
th etires ,inc ludin gth espar ewhee l. Ti
re pressu re
301Wheels andtire s Z