2020 MERCEDES-BENZ SL ROADSTER ECU

X
Reac hint oth egap, pullhoodcat chhan -
dle 0044upand lifthoo d0043.
If you liftthehoo dby appr oximat ely15in
(40 cm), thehoo dis open edand held open
auto maticallyby thegas- filled strut .
Closin gth ehood X
Lowe rth ehoo dand letitfall from aheig ht
of appr oximat ely8in (20 cm).
X Chec kth at thehoo dhas engage dpro perly.
If th ehoo dcan berais edslig htly, itis no t
pro perlyen gage d.Open itagain andcloseit
wit halit tle mor efor ce. Engine
oil
Not eson theoil level De
pen dingon your drivingstyle, theveh icle
co nsumes upto0.9US qt(0.8 lite rs)of oilpe r
60 0mi les(1 ,000 km).Th eoilco nsumpt ion
may behigh erthan this when theveh icle is
ne wor ifyou frequen tlydriv eat high engin e
spee ds.
De pen dingon theen gin e,theoil dipst ickmay
be inadiff ere ntloc atio n.
When check ing theoil leve l:
R park theveh icle onaleve lsurf ace
R theen gin esho uld beswit ched off for
appr oximat elyfivemin utesif th een gin eis
at norm aloper atingte mpe rature
R ifth een gin eis no tat norm aloper atingte m-
per atur e,e.g .if th een gin ewas onlystart ed
brie fly,wait about 30min utesbef ore carry-
ing out themeas urement Check
ingtheoil level usingth eoil dip -
st ick G
WAR
NING
Cert aincompo nentsin theen gin eco mpar t-
men t,suc has theen gin e,radiat orand parts
of theex haust system, canbecome very
hot .Wor kingin theen gin eco mpar tment
pose sa ris kof injury.
On lytouch thefoll owin gco mpo nentsdesc ri-
bed.
If work isbein gcar ried outonpublic roads,
pay attentio nto theroad andtraff icco nd ition s
and secure thearea asappr opriate . Ex
ample
X Pull outoildipst ick0043.
X Wipe offoildipst ick0043.
X Slo wly slide oildipst ick0043intoth eguide
tub eas far asitwill go,and takeit out
again .
If th eleve lis bet ween MINmark0087 and
MA Xmar k0044, theoil leve lis co rrect .
X Ifth eoil leve lhas dropped toMIN mark0087
or below, add1.1US qt(1l)of engin eoil.
Add ingengine oil G
WAR
NING
Cert aincompo nentsin theen gin eco mpar t-
men t,suc has theen gin e,radiat orand parts
of theex haust system, canbecome very
hot .Wor kingin theen gin eco mpar tment
pose sa ris kof injury.
Wher eposs ible, lettheen gin eco ol down
and touch onlytheco mpo nentsdesc ribedin
th efoll owin g. Engine
compartm ent
269Maintenan ceand care Z

G
WARNING
If engine oilcomes intocontact withhot
components inthe engine compartment, it
may ignite. Thereisarisk offire and injury .
Make surethatengine oilisnot spilled next
to the filler neck. Letthe engine cooldown
and thoroug hlyclea nthe engine oiloff the
components beforestarting theengine. H
Envi
ronmental note
When addingoil,take carenottospil lany. If
oil enters thesoil orwate rways,itis harmfu l
to the environment.
! Use
only engine oilsand oilfilters thatare
app roved forvehicl eswith aservice system.
A list ofthe engine oilsand oilfilters that
have been tested andapproved inaccord-
ance withMercede s-BenzSpecifications for
Service Productsisava ilable atany author-
ized Mercede s-BenzCenter.
The followi ngcaus eengine failure ordam-
age tothe exhau stsystem:
R Use ofengine oilsand oilfilters thathave
not been express lyapp roved forthe ser-
vice system
R Rep lace ment ofengine oiland oilfilter
after thereplacement intervalspecified
by the service system hasexpire d
R Use ofengine oiladd itives
! Do
not add toomuch oil.If the oilleve lis
abo vethe "ma x"mark onthe dipstick, too
much oilhas been added. This canleadto
dama getothe engine orthe catal yticcon-
verter. Haveexcess oilsiph oned off. Example
:engine oilcap X
Turn cap0043counter-clockwi seand remove
it.
X Add engine oil.
If the oilleve lis at or bel ow the MIN mark
on the oildip stick, add1.1USqt(1.0 liter)
of engine oil.
X Rep lace cap0043onthe filler neck andturn
clockwis e.
Ensure thatthecap locks intoplace
secure ly.
X Che ckthe oilleve laga inwith theoildip stick
(Y pag e269) .
Further informati ononengine oil
(Y pag e327) . Che
ckin gand adding otherservice
products
Che ckin gco olan tlev el G
WARNING
Certa incomponents inthe engine compart-
ment, suchasthe engine, radiator andparts
of the exhau stsystem, canbecome very
hot. Working inthe engine compartment
poses arisk ofinjury .
Where possible,let the engine cooldown
and touch onlythecomponents describedin
the followi ng. G
WARNING
Opening thehood when theengine isover-
hea ted orwhen thereisafire inthe engine
compartment couldexpose youtohot gase s
or other service products.There isarisk of
injury .
Let anoverhe atedengine cooldownbefore
openi ngthe hood. Ifthere isafire inthe
engine compartment, keepthehood closed
and contact thefire depa rtment. G
WARNING
The engine compartment containsmoving
components. Certaincomponents, suchas
the radiator fan,may continue torun orstart
aga insud denly whentheignitio nis off.
There isarisk ofinjury . 270
Eng
inecompar tmentMainten anceandcare

a
dec orat ivefilm when thedec orat ivefilm is
rem oved.
i Hav
ework orrepai rson dec orat ivefilm
car ried outataqualifi edspec ialist work-
shop .Mer cedes-Ben zrec omm endsth at you
use anauth orizedMer cedes-Ben zCent erfor
th is purpo se. Cleani
ngthevehi cleparts
Cleani ngthewheels G
WAR
NING
The wate rje tfr om acir cular jetno zzle (dirt
blast ers)can caus einv isible exterio rdam-
age tothetir es orchassis components.
Compo nentsdamage din this way may fail
unex pectedly. Ther eis arisk ofan acc iden t.
Do notuse power washer swith circular jet
no zzles tocle an theveh icle.Hav edamage d
tir es orchassis componentsrepl aced imme-
diat ely.
! Do
notuse acidi cwheel cleanin gprod ucts
to rem ove brak edust .This coulddamage
wheel boltsand brak ecom ponents.
! Do
notpark yourvehicle foralon gperi od
of tim edire ctly aft ercle anin g,part icular ly
aft ercle anin gth ewheel rimwith wheel
cle aner .Whee lcle aner canlead tothe
inc reas edcor rosion ofthebrak edisc sand
pads. Therefore, driv efor afew minutes
aft ercle anin g.By heat ingupthebrak es,the
brak edisc sand pads dry.Thevehicle can
th en be park edfor alon gperi odoftim e.
Cleani ngthewindows G
WAR
NING
You couldbec ome trapped bythewind -
shie ldwiper sif th ey start mov ingwhile
cle anin gth ewind shieldor wiper blades .
Ther eis arisk ofinjury.
Always switchoff thewind shieldwiper sand
th eign ition befo recle anin gth ewind shield
or wiper blades . !
On
lyfold thewind shieldwiper saway from
th ewind shieldwhen vertical. Other wise, you
will damage thehood .
! Do
notuse drycloths, abras iveprod ucts,
solv entsor cle anin gagen tscon tain ingsol-
ven tsto cle an theins ide ofthewind ows. Do
no tto uch theins ides ofthewind owswith
hard object s,e.g .an ice scraper orring.
Ther eis other wise arisk ofdamagi ngthe
wind ows.
! Clean
thewate rdrain agechann elsofthe
wind shieldand therear wind owatreg ular
int erv als. Deposit ssuc has leave s,pet als
and pollen mayunde rcer tain circum stanc es
prev entwate rfr om drain ingaway. Thiscan
lead tocor rosion damage anddamage to
elec tron iccom ponents.
X Clean theins ide and outside ofthewind ows
with adamp clothand acle anin gpro duct
th at isrec omm endedand appro vedby
Mer cedes-Ben z.
Cleani ngwiper blades G
WAR
NING
If th ewind shieldwiper sare setinmot ion
while youarecleanin gth ewind shield,you
can betrapped bythewiper arm.Ther eis a
risk ofinjury.
Always switchoff thewind shieldwiper sand
th eign ition befo recle anin gth ewind shield.
! Do
notpull thewiper blade. Other wise, the
wiper bladecouldbe damage d.
! Do
notcle an wiper blades toooft en and
do notrub them toohard .Ot her wise, the
grap hitecoat ingcoul dbe damage d.This
coul dcaus ewiper noise.
! Hol
dth ewiper armsecurely when folding
back .The wind shieldcoul dbe damage dif
th ewiper armsmac ksagain stitsudden ly.
X Fol dth ewind shieldwiper armsaway from
th ewind shield.
X Caref ullyclean thewiper blades witha
damp cloth.
X Fol dth ewind shieldwiper armsback again
befo reswit ching ontheign ition . Car
e
277Maintenance andcare Z

Tire
-chan getoo lkit The
tire-cha nge tool kitcan befou ndinthe
stow agewe llund erthe trunk floor
(Y page 255 ). 0043
Bag conta ining the tire-cha nging tool s
Bag 0043with the tire-cha nging tool sconta ins:
R jack
R lug wr ench
R alig nment bolt
R wh eelcho ck
R glove s
Dep endingonthe equipme nt,tool sreq uired
for awh eelcha nge ,su ch asajack oralug
wr ench ,ar enot availabl e in allveh icles. Tools
ap pro ved foryour veh iclear eav ailabl e at a
qu alifi ed speci alistwo rksh op. Fl
at tire Pre
parin gthe vehic le
Yo ur veh iclema ybe equipp ed with:
R tire swi th run-fl atcha racteri stics
(M OExte ndedtire s)(Y page 281 )
Veh iclepre paratio nis not nece ssaryon
veh icles with MOExte ndedtire s.
R aTIR EFIT kit(Ypage 280 )
Veh icle swi th the Merce des -Benzeme r-
ge ncyca llsys tem: inthe eventofafla ttire ,
yo ucan conta ctthe Merced es-Benz emer-
ge ncy callsy stem custome rcente r.
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 kitmaybe
ob tained fromaqu alifi ed speci alistwo rksh op. Info
rma tionon cha nging and mou nting wheels
(Y page 316 ).
X Stop thevehicleon solid,non-s lipp ery and
le vel ground ,as faraw ay aspossi ble fro m
tra ffic.
X Swi tch onthe hazar dwa rning lamps .
X Secu rethe vehicleag ainst rolling away
(Y page 147 ).
X Ifpo ssi ble, bri ng the frontwh eelsinto the
stra ight-a head positio n.
X Swi tch offthe engine.
X Veh icle swi tho utKEYLES S-GO :rem ove
the Sma rtKeyfro mthe igniti onlock.
X Veh icle swi th KEYLES S-GO :op en the driv-
er' sdo or.
The vehicleelectro nicsarenow inpo sitio n
005A. Thisis the same asthe Sma rtKeyha vin g
be en rem oved.
X Veh icle swi th KEYLES S-GO :rem ove the
Star t/Stop button fromthe igniti onlock
(Y page 126 ).
X Ma kesure tha tthe passe nge rsarenot
end angeredas the ydo so. Makesure tha t
no one isnea rthe dange rar ea while a
wh eelis be ing change d.Anyo newhois not
di rectl yas sisti ng inthe wheelcha nge
sho uld, for exa mpl e,sta nd behind the bar-
rie r.
X Ge tou tof the vehicle. Pa yatte ntionto tra f-
fic cond itions when doing so.
X Close thedriver 'sdo or. MOE
xtende dtire s(ti res with run-f lat
prope rties)
Ge neral notes 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.The affecte dtire mustnot
sho wany clearly vis ible da ma ge.
Yo ucan reco gnizean MOExte ndedtire bythe
MOExte ndedma rkin gwh ich appe arson the
si de wa llof the tire.Yo uwi llfind thisma rkin g
next tothe tire size designa tion,the load -be ar-
ing capacityand thespee dind ex
(Y page 310 ).
MOExte ndedtire sma yonl ybe used incon-
juncti onwith an acti vetire pressu remoni tor. Fl
at tire
281Break downass istanc e

If
apr essu reloss warning message
ap pea rsinthemu ltifu nct ion displa y:
R obse rveth eins truct ionsin thedispl aymes -
sages (Ypage 230)
R ch eck thetir efor damag e
R ifdriv ingon,obse rveth efoll owin gno tes
The drivingdist anceposs ibleinrun -flat mod e
is appro ximately50 miles (80kilome ters)
when theveh icle ispart ially laden andappro x-
imat ely19miles (30kilome ters) when the
veh icle isfully laden .
In addit iontotheveh icle load, thedriv ingdis-
tan ceposs ibledepen dsupon :
R Vehi clespee d
R Road condition
R Out side temper ature
The drivingdist anceposs ibleinrun -flat mod e
may bereduc edbyext rem edriv ingcon dition s
or man euver s,or itcan beincreas edthroug ha
mod eratest yle ofdriv ing.
The drivingdist anceposs ibleinrun -flat mod e
is coun tedfrom themom entthetir epres sure
loss warn ingappear sin themult ifunction dis-
play.
You must notexc eed amax imum design
spee dof 50 mph (80km/h).
When replacin gon eor all tires, please observe
th efoll owin gspec ificatio nsfor your vehicle's
tir es:
R Siz e
R Type and
R The "MOE xtend ed" marking
If atir ehas goneflat and cannotbe repl aced
with anMOE xtend edtire, ast andar dtir emay
be used asate mpo rarymeas ure.Makesure
th at you usethepro per sizeand type (summer
or wint ertire).
Vehi clesequippe dwith MOExtend edtires are
no tequippe dwith aTIRE FITkit atthefac tory.
It is theref orerecomm endedthat you addit ion-
ally equip yourvehicle with aTIRE FITkit ifyou
moun ttir es that do notfeat ure run-flat charac -
te ris tic s,e.g .wint ertires. ATIRE FITkit can be
obt aine dfrom aqualifi edspec ialist workshop,
for exam ple. Imp
ortant safety notes G
WAR
NING
When youdrivein emer gencymod e,the
han dlingch arac teris tic sare impair ed.e.g.
when cornerin g,when acceler atingst ron gly
and when braking.Ther eis aris kof an acc i-
den t.
Do notexc eed themax imum specified
spee d.Avoid any abrupt steer ing and driving
man euver sas well asdriv ingoverobst acles
(cur bs,pot holes ,off -road). Thisapplies ,in
part icular ,to aloaded vehicle.
St op driv inginemer gencymod eif you
no tice:
R bang ingnoise
R veh icle vibratio n
R smo kewhic hsme llslikerubbe r
R con tinuous ESP®
int erv entio n
R crack sin thetir eside walls
Af terdriv inginemer gencymod e,have the
rim sch eck edbyaqualifi edspec ialist work-
sho pwith regard totheir further use. The
def ective tiremust berepl aced ineve ry
cas e. TIR
EFIT kit
Imp ortant safety notes TIRE
FITis atir esealan t.
You canuseTIRE FITto seal punc tures ofup to
0. 16 in(4 mm ),part icular lythose inthetir e
tr ead. YoucanuseTIRE FITat out side temper a-
tur es down to00F84 ‡(00F82 0†). G
WAR
NING
In thefoll owin gsit uatio nsinpart icular ,th e
tir esealan tis unabl eto pro vide sufficient
break down assistanceasitcan notseal the
tir epro perl y:
R there arecutsor punc tures inthetir e
large rth an those men tionedprev iously.
R thewheel rimisdamag ed.
R you have drivenatver ylow tirepres sures
or on aflat tire. 282
Flat
tireBr eak down 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

Make
surethat:
R The jumper cablesarenot damaged.
R Bare parts ofthe terminal clampdonot come intocontactwith other metal partswhile the
jumper cablesareconn ected tothe battery.
R The jumper cablescannot comeintocontactwith parts which canmove whentheengine is
running, suchasthe V-belt pulleyor the fan.
X Secure thevehicle byapply ingthe electric parking brake.
X Shift thetransmission toposition 005D.
X Make surethattheignition isswitched off.Allindicator lampsinthe instrumen tcluster must
be off. When usingtheSmartK ey,turn theSmartK eytoposition 0092inthe ignition lockand
remove it(Y page 126).
X Switch offallelectrical consumers, e.g.rear window defroster, lighting,etc.
X Open thehood. Position
number0084identifies thecharged batteryofthe other vehicle oran equival entjump-
startin gdevice.
X Press cover0043ofpositive terminal 0044down (inthe direction ofthe arrow) andturn itclock-
wise. Toexpose positive terminal 0044,press cover 0043down further.
X Connect positiveterminal 0044onyour vehicle topositive terminal 0087ofdonor battery 0084using
the jumper cable,alwaysbegin withpositive terminal 0044onyour ownvehicle first.
X Start theengine ofthe donor vehicle andrunitat idling speed.
X Connect negative terminal0085ofdonor battery 0084toground point0083ofyour vehicle usingthe
jumper cable,beginning withdonor battery 0084first.
X Start theengine.
X Before disconnec tingthejumper cables,letthe engine runforseveral minutes.
X First, remove thejumper cablesfromground point0083and negative terminal0085,then from
positive terminal 0044and positive terminal 0087.Begin eachtimeatthe cont acts onyour own
vehicle first.
X Aft erthe jumper cableisremoved, returncover0043ofpositive terminal 0044tothe original posi-
tion. Positive terminal 0044iscovered upand thus insulated again.
X Have thebattery checkedataqual ified specialist workshop.
Jump-starting isnot considered tobe anormal operating condition. 290
Jump
-startingBr eakdown 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