2008 MERCEDES-BENZ SL ROADSTER Owners Manual

Flat tyre
270 Changin
gawheel and fitting th espare
wheel* G
Risk of accident
The whee ldimensions and tyr esizeoft he
emergenc yspar ew heel* may differ from
those of th estandard wheels.
Your vehicle's handlin gcharacteristics will
chang ewhen drivin gwithac ollapsible
emergenc yspar ew heel* .Adapt your style
of drivin gaccordingly.
The collapsible emergenc yspar ew heel*
may only be used fo rashort time. Do not
exceed th emaximum speed of 80 km/h
and do no tdeactivat eESP®
.
Never drive th evehicl ewithm oret hano ne
collapsible emergenc yspar ew heel* fitted. G
Risk of accident
Hav ethe collapsible emergenc yspare
wheel* replaced as soo naspossibleata
qualified specialist workshop whic hhas the
necessar yspecialist knowledge and tools
to carry out th eworkr equired. Mercedes-
Benz recommends that you use a
Mercedes-Ben zServi ce Centr efor this pur-
pose. In particular, wor krelevan ttosafety or on safety-related systems mus
tbecar-
rie do ut at aqualified specialist workshop.
Preparing th evehicle X
Prepare th evehicl easd escribed
(Y page 266).
X Plac ethe wheels in th estraight-ahead posi-
tion.
X Tak ethe following from th estowage well
beneat hthe boo tfloor:
R thec ollapsible emergenc yspar ew heel*
R thev ehicl etoolkit
R thew hee lchock
R thej ack
R thea ir pump
.
X Secur ethe vehicl etopreven titfromr olling
away.
On level ground: placechock sors imilar
items under th efront and rear of th ewheel
that is diagonally opposit ethe whee lyou
wish to change. X
On downhil lgradie nts:placechock sor
similar items under bot hwheels of the
other axle. 1
Wheel wrench
X Using whee lwrench 1,loosen th eboltson
th ew hee lyou wish to chang ebyabout one
full turn. Do no tunscrew th eboltsc om-
pletely.
Raisin gthe vehicle G
Risk of injury
The jac kisdesigned only to rais ethe vehi-
cle fo rashort time while awhee lisb eing
changed. Practical advice
*optional
230_AKB; 5; 4, en-GB
bjanott
,V ersion: 2.9.6
2008-04-08T15:09:54+02:00
-Seite 270 Dateiname: 6515_3089_02_buchblock.pdf; preflight

Flat tyre
271The vehicl
emustbep laced on stand sifyou
intend to wor kunder it.
Mak esuret hatthe jackisp laced on afirm,
non-slip ,level surface. Do no tuse wooden
blocks or similar items as jacking supports.
Otherwise ,the jackw ill no tbea ble to ach-
iev eits load-bearin gcapacity due to the
restricted height.
Do no tstart th eengineata ny time while
th ew hee lisb eingchanged. G
Risk of accident
If you fail to position th ejackc orrectly,t he
vehicl emay:
R slip of fthe jack
R injur eyou or others
R be damaged
It is thus important to ensur ethatthe jack
is positioned correctl yint he respective
jacking points .Befor epositionin gthe jack,
remove any dir ttha tm ay hav ecollecte din
th ej acking points.
The jacking sockets are locate dbehin dthe
whee lhousings of th efront wheels and in fron
toft hewhee lhousings of th erear
wheels. Example standar
dvehicle
1 Cap for jackin gsocket Example AMG vehicle
1
Cap for jackin gsocket X
Standar dvehicles: pressthe cover firmly
in th edirectio nofarrow1and pry off the
cover with asuitable object ,e.g.a screw-
driver.
X AMG vehicles: pry off cover1from
underneat hwithasuitable object ,e.g.a
screwdriver.
X All vehicles: remove cover 1.Make sure
th el ug does not break off. 1
Jacking pin
2 Jacking socket
3 Crank
X Push jackin gpin1 as far as it will go into
jackin gsocket 2. Practical advice
230_AKB
;5;4,en-GB
bjanott, Version:2.9.6
2008-04-08T15:09:54+02:00
-Seite 271 ZDateiname: 6515_3089_02_buchblock.pdf; preflight

Flat tyre
272
X
Mak esuret hatthe base of th ejackisp osi-
tioned directl yunder jacking point 1.
X Hold th ejac kint hisp osition and tur ncrank
3 clockwise until th efootoft hejack
touches th eground .The jac kmustthen
stand vertically, eve nonaslope.
X Tur ncrank 3 until th etyreisr aised amax-
imum of 3cmfromt heground.
X Unscrew th euppermos twhee lbolt com-
pletely. 1
Centrin gpin
X In place of th ewheel bolt ,screw centring
pin 1from th evehicle tool kit int othe
thread.
X Unscrew th eremainin gwheel bolt sfully. !
Do not place wheel bolt sinsandorona
dirt ysurface. This could cause damage to
th eb olt and wheel hub threads.
X Remov ethe wheel.
Fitting anew wheel G
Risk of accident
Replace damaged or corrode dwheel bolts.
Never oil or greas ewheel bolts. G
Risk of accident
If aw heel hub thread is damaged ,you must
not driv ethe vehicle any further. Consult a
qualifie dspecialist workshop whic hhas the
necessar yspecialist knowledge and tools
to carry out th ework required. Mercedes-
Ben zrecommend sthaty ou use a
Mercedes-Ben zServic eCentre or Service
24 hfor this purpose. In particular ,work rel-
evan ttosafety or on safety-related systems
must be carried out at aqualifie dspecialist
workshop. G
Risk of accident
Only use wheel bolt sthath ave been
designed for th ewheel and th evehicle. For
safety reasons ,Mercedes-Ben zrecom- mends that you onl
yuse wheel bolt swhich
have been approved for Mercedes-Benz
vehicles .Other bolt scould work loose.
Do not tighten th ewheel bolt scompletely
while th evehicle is still jacked up. The vehi-
cle could topple off th ejack.
X Clean th ewheel and wheel hub contact
surfaces. X
Place th ecollapsible emergency spare
wheel* ont othe centring pin and push it on. Practical advice
*optional
230_AKB
;5;4,en-GB
bjanott, Version:2.9.6
2008-04-08T15:09:54+02:00
-Seite 272 Dateiname: 6515_3089_02_buchblock.pdf; preflight

Flat tyre
273X
Tighten th ewheel bolt suntil they are fin-
ger-tight.
X Unscrew th ecentring pin.
X Tighten th elast wheel bolt until it is finger-
tight.
Inflatin gthe collapsible emergency
spare wheel* with th eelectric air pump G
Risk of accident
Pump up th ecollapsible emergency spare
wheel before lowering th evehicle. Other-
wise, you could damage th ewheel rim.
The electric air pump is located in th estow-
age well under th eboot floor. X
Take th eelectric air pump out of th estow-
age well under th eboot floor. 1
Flap
2 On/of fswitch
3 Connector
4 Air pump hose with pressure gauge and
pressure release screw
5 Union nut
X Open flap 1.
X Pull connector 3and air hose 4out of
th eh ousing.
X Make sure that th epressure release screw
on th epressure gauge is closed.
X Remov ethe cap from th evalv eont hetyre. X
Screw unio nnut5 on air hose 4ont othe
valve.
X Inser tplug 3intot he cigarette lighter
socket *(Ypage 166) or int oa12Vsocket
in your vehicle (Y page 166).
X Make sure that th ekey is in position 2in
th ei gnition lock.
X Pres son/off switch 2on th eelectric air
pump to I.
The electric air pump is switche don. The
tyr eisi nflated.
X When th etyrep ressure is correct, press 0
on th eelectric air pump switch. Correct
tyr ep ressure:
R collapsible spare wheel* with specifica-
tio n1 85/60-17 93P: 2.5bar
R collapsible spare wheel* with specifica-
tio n1 75/55-18 95P: 3.5bar
R collapsible spare wheel* with specifica-
tio n1 75/55-18 91P: 3.0bar
R collapsible spare wheel* with specifica-
tio n1 75/50-19 97P: 3.5bar
! Do not operate th eelectric air pump for
longer than six minutes without abreak.
Otherwise, it may overheat. Practical advice
*o ptional
230_AKB
;5;4,en-GB
bjanott, Version:2.9.6
2008-04-08T15:09:54+02:00
-Seite 273 ZDateiname: 6515_3089_02_buchblock.pdf; preflight

Flat tyre
274The air pump can be operate
dagain once
it has cooled down.
If th etyrep ressur eistoohigh:
X Ope nthe pressur erelease screw on the
pressur egauge until th etyrep ressur eis
correct.
X Disconnect th eelectric air pump and stow
it away.
Lowering th evehicle X
Lower th evehicle. To do this, tur nthe crank
of th ejacka nti-clockwise until th evehicle
is standin gfirmly on th eground again.
X Pull th ejacko ut of th ejacking socket.
X Plac ethe jacktoo neside. X
Tighte nthe whee lbolt se venl yinac ross-
wise pattern in th esequence indica-
te d( 1to 5). The tightenin gtorque is
130 Nm . G
Risk of accident
Hav ethe tightenin gtorque checke dimme-
diately after awhee lisc hanged. The wheels
could wor kloos eift heya re no ttightened
to atorque of 130 Nm .
X Tur nthe jackb acktoi tsinitial position and
store it and th erestoft hevehicl etoolkit
in th eboot.
X Push th etab of th ejacking socke tcap
under th etop edge of th ehole.
X Push on th ecap evenl yuntil it snaps into
place.
i Mak esuret hatthe lugs do no tbreak off
and that th eplastic retainer strap is not
trapped.
X Pac kthe fault ywhee lint heprotective film
included wit hthe collapsible emergency
spar ewheel* and transpor tthe whee lin
th eb oot.
i Whe nyou are drivin gwitht he collapsible
emergenc yspar ew heel* fitted, th etyre pressur
elossw arnin gsystem or th eelec-
tronic Run Fla tInd icator* canno tfunction
reliably.
Stowing ausedc ollapsible emergency
spar ewheel* If you wish to stow
aused collapsible emer-
gency spar ewheel* in th evehicle, you must
follow th esteps below, otherwise you will not
be able to stow it .Werecommen dthatthis
wor kisc arriedout at aspecialist workshop.
! Only plac ethe collapsible emergency
spar ewheel* in th evehicl ewhen it is dry.
Otherwise ,moisture may remain in the
boot.
X Unscrew th evalvec ap from th evalve.
X Remove th evalvee xtractor from thevehi-
cle tool kit.
X Unscrew th evalv eins ertfro mt hevalv eand
release th eair.
i Fullydeflatin gthe tyres can tak eafew
minutes.
X Screw th evalveinsertb acki ntot he valve.
X Screw th evalvec ap bac kon Practical advice
*optional
230_AKB; 5; 4, en-GB
bjanott
,V ersion: 2.9.6
2008-04-08T15:09:54+02:00
-Seite 274 Dateiname: 6515_3089_02_buchblock.pdf; preflight

Flat tyre
275
X
Put th eprotective film provided fo rthe
emergenc yspar ew heel* ove rthe collaps-
ible emergenc yspar ew heel*.
X Store th ecollapsible emergenc yspare
wheel* in th espar ew hee lwell under the
luggage compartment.
X Faste nthe collapsible emergenc yspare
wheel* in plac ethrough th eprotective film
usin gthe screw. MOExtended run-fla
tsystem*
The MOExtended run-flat system mus tonly
be used in conjunction wit hthe tyrep ressure
los sw arnin gsystem or th etyrep ressure
monitor*.
! The maximum permissibl edistanc ewhich
can be driven in run-flat mod edepend son
th el oad in th evehicle. It is 50 km if the
vehicl eispartially laden and 30 km if fully
laden.
The maximum range that can be driven in
emergenc yoperation is measured from the
poin tatw hichthe pressur elossw arning
message appears in th emulti-function dis-
play. You mus
tnotexceed amaximum speed of
80 km/h. G
Risk of accident
The handlin gcharacteristics of your vehicle
deteriorate in run-flat mode, fo rexample:
R when cornering
R when braking
R when accelerating rapidly
Adapt your drivin gstyle accordingly and
avoid sudden changes in direction and sud-
den acceleration ,aswell as drivin gover
obstacles (i.e. kerbs ,potholes), and driving
off-road. This is particularl ythe cas ew hen
th ev ehicl eish eavily laden.
The maximum permissibl edistanc ethat
can be driven in run-flat mod edepend sto
al arg eexten tont heloads placed on the
vehicle. It can be shorter due to high
speeds ,aheavyload, sudden acceleration
and/o rmanoeuvring, th eroads urfac econ-
dition ,outside temperature, etc. ,orfurther
if you drive carefully and conservatively.
Do no tcontinu etodrive in run-flat mod eif:
R you hear bangin gnoises
R thev ehicl estartstos hake
R you see smok eand smell rubber R
ESP ®
is intervenin gconstantly
R there are tears in th esidewalls of th etyre
Afte rdrivin ginr un-flat mode, you must
hav ethe rim schecked ford amage at a
qualified specialist workshop whic hhas the
necessar yspecialist knowledge and tools
to carry out th eworkr equired. The faulty
tyr em ustber eplaced in every case.
Mercedes-Ben zrecommends that you use
aM ercedes-Ben zServi ce Centr efor this
purpose .Inparticular, wor krelevan tto
safet yoro nsafety-related systems mus tbe
carrie dout at aqualified specialist work-
shop.
i Onavehicl ewithM OExtended tyres, only
use MOExtended spar etyres. These must
be of th esizes pecified fo rthe vehicle. Practical advice
*o ptional
230_AKB; 5; 4, en-GB
bjanott
,V ersion: 2.9.6
2008-04-08T15:09:54+02:00
-Seite 275 ZDateiname: 6515_3089_02_buchblock.pdf; preflight

Battery
276 Battery
Note
sont he vehicle battery
In order for the battery to achieve the maxi-
mu mp ossibl eservic elife, it must always be
sufficiently charged.
Hav ethe battery charge checked mor efre-
quentl yifyouuset he vehicl emainl yf or short
trip sorify ouleav eits tanding idle for a
lengthy period.
To prevent damage fro mcorrosion, only
replace the battery with one tha thas ac entral
ventilatio ncover.
Consult aMercedes-Benz Service Centre if
yo uw ishtol eave your vehicl eparked up for
al on gp eriodoft ime. G
Ris
kofi njury
Compl ywiths afety precautions and take
protective measures when handling batter-
ies. Risk of explosion
Fire, nake
dflames and
smoking ar eprohibited
when handling the bat-
tery .Avoi dc reating
sparks. Battery aci
discaustic.
Avoi dcontact with the
skin, eyes or clothing.
Wear suitabl eprotective
clothing, in particular
gloves, an apron and a
face mask.
Immediately rins eacid
splashe soff with clean
water. Consult adoctor if
necessary. Wear ey
eprotection. Kee
pchildren away. Observe thi
sOwner's
Manual. H
Environmental note
Do not dispose of batteries with the house-
hol drubbish .Dispose of defective batteries
in an environmentall yresponsibl emanner.
Take them to aMercedes-Benz Service Centre or to
aspecial collectio npoint for
ol db atteries. G
Ris
kofi njury
For safety reasons ,Mercedes-Benz recom-
mend sthaty ou onlyusebatteries which
have been teste dand approved for your
vehicl ebyM ercedes-Benz. These batteries
provid eincreased impact protection to pre-
vent vehicl eoccupants fro msuffering acid
burns shoul dthe battery be damage dinthe
event of an accident.
To prevent aci dburns, observe the follow-
ing safety note swhenh andling batteries:
R Do not lean ove rbatteries.
R Do not place any meta lobjects on abat-
tery .You could otherwis ecause ashort
circui tand the battery's highl yflammable
ga sm ixtur ecould ignite.
R Make sure tha tyou do not create an elec-
trostati ccharge ,e.g.b yw eari ng syn-
theti cclothing or as aresul toff rictio non
fabrics. Therefore ,you shoul dnot pull or
slid ethe battery ove rcarpets or other
syntheti cmaterials.
R Never touch the battery first. To dis-
charge apossibl eelectrostatic charge, Practical advice
230_AKB; 5; 4, en-GB
bjanott,
Version: 2.9.6 2008-04-08T15:09:54+02:00-Seite 276 Dateiname: 6515_3089_02_buchblock.pdf; preflight

Battery
277step ou
tofthe vehicl efirst and touch the
bodywork.
R Do not wipe the battery using acloth. The
battery ma yexplode as aresul tofe lec-
trostati ccharge or du etoflying sparks.
! Switch the engine off and remove the key
befor eunscrewing or disconnecting the
termina lclamps fro mthe battery .You may
otherwis edestro ye lectronic components
such as the alternator.
i Mercedes-Benz recommends tha tyou
have al lworki nvolving the battery ,e.g.
removing, charging and replacing ,carried
ou tata qualified specialis tworkshop ,e.g.
aM ercedes-Benz Service Centre.
Installation locatio nofthe battery Your vehicl
eisequippe dwitht wo batteries:
R Starter battery in the engine compartment
R Consumer battery in the boot Starter battery in the engine compartment
1 Positive terminal
2 Negative terminal Disconnecting the battery
G
Ris
kofa ccident
If the battery is disconnected:
R the brake boosting effect will not be avail-
able .Greate rbraking force will then be
required and the brake peda ltravel will
be longer. If necessary ,depress the
brake peda lwithm aximum force.
R yo uc an no longe rturnt he key in the igni-
tio na nd,onv ehicles with KEYLESS GO*, pressing the KEYLESS GO button*
will have no effect
R the selector lever is locked in position P
! Alway sdisconnect the battery in
the order describe dbelow .Never swap the
termina lclamps .You mayotherwis edam-
ag et he vehicl eelectronics.
Disconnecting the starte rbattery X
Firmly depress the parking brake and shift
the selector lever to position Pon vehicles
with automatic transmission*.
X Switch off al lelectrical consumers.
X Turn the key to position 0in the ignition
lock and remove it.
X Open the bonnet.
X Remov ethe negative termina lclamp from
the battery.
X Remov ethe cove rfromt he positive termi-
nal clamp.
X Remov ethe positive termina lclamp from
the battery.
X Disconnect the breather hose. Practical advice
*o ptional
230_AKB; 5; 4, en-GB
bjanott,
Version: 2.9.6 2008-04-08T15:09:54+02:00-Seite 277 ZDateiname: 6515_3089_02_buchblock.pdf; preflight