2008 MERCEDES-BENZ SL ROADSTER engine

Troubleshooting
252 Problem Possible cause/consequence Suggeste
dsolutions Th
ek ey cannot be turned in the
ignition lock. Th
ek ey ha sbeeninp osition0for
ac onsiderabl etime. X
Remov ethe key and reinsert it into the ignition lock.
X Check the starter battery and recharge it if necessary
(Y page 276).
X Star tthe engine. Th
eo n-board voltag eistoo low. X
Switch off non-essentia lconsumers ,e.g.s ea th eating* or interior
lighting ,and try to tur nthe key again.
If thi sdoesn ot work:
X Check the starter battery and recharge it if necessary
(Y page 276).
or
X Jump-start the vehicl e(Ypage 279).
or
X Consult aqualified specialis tworkshop. Practical advice
*optional
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Troubleshooting
254 Problem Possible cause/consequence Suggeste
dsolutions Th
ev ehicl ecannot be started
using the KEYLESS GO key and
the KEYLESS GO button. Th eKEY-
LESS GO key is in the vehicle. Ad
ooriso pen. Th ekey therefore
cannot be detecte dsoeasily. X
Clos ethe door and try to start the vehicl eagain. Yo
ud idnot depress the brake
when starting the engine. X
Depres sthe brake and press the KEYLESS GO button. There is interferenc
efromap ow-
erful source of radi owaves. X
Star tyou rv ehicl eusing the KEYLESS GO key in the ignition lock. Yo
uh avel ostthe KEYLESS GO
key. X
Have the KEYLESS GO key cancelle dataMercedes-Benz Service
Centre.
X Report the loss immediatel ytothe vehicl einsurers.
X If necessary ,havet he manua lloc ks change dtoo. Parkin
gupthe vehicle Problem Possible cause/consequence Suggeste
dsolutions Th
ev ehicl eistobel eftp arked up
for longe rtha ns ixweeks. Damag
eresulting fro mnon-use
ma yoccu rift he vehicl eisparked
up for long periods. X
Visi taq ualified specialis tworkshop and seek advice.
X Disconnect the battery ( Ypage 277). Practical advice
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Replacing the wiper blades
265Removing
Movin gthe wiper blades to avertical
position Vehicles withou
tKEYLESS GO*
X Make sure tha tthe key is in position 1or
2 in the ignition lock.
X Set the windscree nwiper stop osition II
(Y page 93) on the combinatio nswitch.
X Whe nthe wipe rarm sh aver eached aver-
tica lposition, turn the key to position 0and
remove it from the ignition lock.
X Fol dthe wipe rarm away from the wind-
screen unti litengages.
X Set the wipe rblade at right angle stothe
wipe rarm.
Vehicles with KEYLES SGO*
X Switch off the engine.
X Take your foo toff the brake pedal.
X Set the windscree nwiper stop osition II
(Y page 93) on the combinatio nswitch.
X Press the KEYLESS GO button repeatedly
unti lthe windscree nwiper sstart. X
Whe nthe wipe rarm sh aver eached aver-
tica lposition, press the KEYLESS GO but-
ton again.
X Fol dthe wipe rarm away from the wind-
screen unti litengages.
X Set the wipe rblade at right angle stothe
wipe rarm.
Removing the wiper blades X
Remove the wipe rblade from the retainer
on the wipe rarm in the direction of the
arrow. Fitting
X Slide the new wipe rblade into the retainer
on the wipe rarm in the opposite direction
to the arrow.
X Turn the wipe rblade paralle ltothe wiper
arm.
X Fol dthe wipe rarm back onto the wind-
screen. Practical advice
*o ptional
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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
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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
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Battery
279
i
If the battery powe rsuppl yhasbeen inter-
rupte d(e.g. if it ha sbeenr econnected) ,you
must carry ou tthe following tasks:
R Set the time (see the COMAND operating
instructions)
R Reset the functio nfor folding the exterior
mirror sin/out automatically* by folding
the mirror soutonce ( Ypage 80). Jump-starting
If your vehicle's battery is discharged, the
engine can be jump-started fro manother
vehicl eorfromane xternalbattery using jump
leads.
Observe the following points:
R Jump-starting ma yonlybep erforme dwhen
the engine and catalytic converter ar ecold.
R Do not start the engine if the battery is fro-
zen. Let the battery tha wfirst.
R Jump-starting ma yonlybep erforme dfrom
batteries with anominal voltag eof12V.
R Onl yusejum pleads which ar eprotected
against polarity reversal and which have a
sufficient cross-sectio nand insulate dter-
minal clamps. i
Jump lead swhich ar eprotecte dagain st
polarity reversal and furthe rinformation
abou tjump-starting can be obtained from
any Mercedes-Benz Service Centre.
! Avoi drepeated and lengthy starting
attempts .Onlyu sethe jump-starting pro-
cedur efor the battery in the engine com-
partment.
Do not us earapid- charging devic etostart
the engine. G
Ris
kofi njury
There is ariskofa cidb urns when jump-
starting avehicl edueto the gases which
escap efromt he battery .Donot lean over
the battery whil ethe engine is being jump-
started. G
Ris
kofe xplosion
Gase sescapin gfromt he battery during
jump-starting ma ycause minor explosions.
Avoi dcreating sparks. Kee pnake dflames
away fro mthe battery ,and do not smoke.
Compl ywiths afety precautions and take
protective measures when handling batter-
ies. Yo uwillf ind thes eunder "Battery "in
the index. X
Make sure tha tthe two vehicles do not
touch.
X Depres sthe parking brake.
X Mov ethe selector lever to P.
X Switch off al lelectrical consumers. 1
Positiv etermina lofdonor battery
2 Positiv etermina lonyourv ehicle
3 Negativ etermina lofdonor battery
4 Negativ etermina lonyourv ehicle
X Connect positiv eterminal 2onyour vehi-
cle to positiv eterminal 1of the donor
batter yusing the jump lead ,begin ning with
your ownb atter y.
X Start the engine of the donor vehicle and
runitati dlingspeed. Pra
ctical advice
*o ptional
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Towin
gand tow-starting 280
X
Connect negative terminal 3of the donor
battery to negative terminal 4of your
vehicle' sbattery using the jum plead, con-
necting the jum pleadtot he donor battery
first.
X Star tthe engine.
X Electrical consumers can be switched on
again. Do not switch the lights on, however,
as thi swillo verloa dthe battery.
X Remov ethe jum pleadf rome arth
point 4and negative terminal 3first,
the nfromp ositivet erminals 1and 2,
each tim edisconnecting fro mthe battery
on your ow nvehicl efirst.
X Have the battery checked at aqualified
specialis tworkshop ,e.g.aM ercedes-Benz
Service Centre. Towin
gand tow-starting Points to remember
G
Ris
kofa ccident
If yo utow the vehicle, yo umustu se arigid
towing ba rif:
R the engine is not running
R there is abrake syste mmalfunction
R the voltag esuppl yort he vehicle' selec-
trica lsystemisd amaged
Th ee lectric powe rsteering and the brake
force booster do not work when the engine
is not running .Greate rbraking force will
the nberequired and the brake peda ltravel
will be longer. If necessary ,depress the
brake peda lwithm aximum force.
Do not tow the vehicl eifthe key cannot be
turned in the ignition lock. If thi sisthe case,
the steering is locked and the vehicl ecan-
not be steered.
If yo utow or tow-start anothe rvehicle, its
weight must not exceed the maximum per-
missibl egross vehicl eweigh tofy ourv ehi-
cle. G
Ris
kofa ccident
Th eS BC®
brake syste mrequires electrical
power. Th eSBC®
brake syste menters
emergency mod eifthere ar efaults in the
powe rsuppl yort he vehicle' selectrica lsys-
tem. Greater braking force will the nbe
required and the brake peda ltravel and
braking distance will be longer. If neces-
sary ,depress the brake peda lwithm axi-
mu mf orce.
Th ev ehicl eisb raked if SBC ®
HOL Disa cti-
vated .The refore, deactivate SBC ®
HOL Dif
the vehicl eistobet owed.
If yo utow or tow-start anothe rvehicle, its
weight must not exceed the maximum per-
missibl egross vehicl eweigh tofy ourv ehi-
cle.
It is better to have the vehicl etransported
tha ntoh aveitt owed.
When towing ,obser ve the lega lrequirements
in al lcountries concerned.
! When towing ,pulla wa yslowl yand with-
ou tjerking. If the tractiv epower is too high,
the vehicles could be damaged. Do not use
the towing ey efor recovery. Practical advice
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Towin
gand tow-starting 281
!
Youm aytow the vehicl efor am aximum
of 50 km. Atowing spee dof50k m/h must
not be exceeded.
With towing distances ove r50km, the
entire vehicl eneeds to be lifted up and
transported.
! Onlysecur ethe tow cable or towing bar
to the towing eyes .You mayotherwise
damage the vehicle.
R Vehicle swithana utomatic transmission
must not be tow-started.
R If the engine does not start, try jum pstart-
ing (Y page 279).
R If it is not possibl etojump-star tthe vehicle,
have it towed to the neares tqualified spe-
cialist workshop ,e.g.aM ercedes-Benz
Service Centre.
R If the vehicl ehassuffered transmission
damage ,onlyt ow it with the propeller shaft
disconnected.
R Th es elect or lever must be in position Non
vehicles with automatic transmission.
R If yo uaretowing the vehicl eoverac onsid-
erabl edistance, thi smayonl ybed onew ith
the rea raxler aised. R
Th eign ition must be switched off if yo uare
towing the vehicl ewitht he front/rear axle
raised .Interventio nbyESP®
could other-
wise damage the brake system.
R Before towing the vehicle, make sure that
the battery is connected and charged. Oth-
erwise:
-Yo uc ann ot switch on the ignition
- Yo uc ann ot mov ethe selector lever to N
- Yo uh avenos upport when braking
i Switch off the automatic locking feature
befor ethe vehicl eistowed (Y page 120).
Yo uc ould otherwis ebelocked ou twhen
pushing or towing the vehicle. Fittin
gthe towin geye
Opening the front cover Th
em ounting sfor the removabl etowing eyes
ar el ocat ed in the bumpers. They ar eloc ated
at the front and rea runder the covers on the
right-hand side of the vehicl ewhenv iewed in
the directio noftravel. 1
Cover
X Press the uppe rsectio nofc over1back
in the directio nofthe arrow whil eatthe
same tim epulling the bottom forwards.
X Take cover 1off the opening. Practical advice
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