2019 MERCEDES-BENZ SLC ROADSTER ECU

R
Make surethatthepositive terminal ofaconn ected battery doesnotcome intocontactwith
vehicle parts.
R Never placemetal object sor tools onabattery.
R Itis important thatyouobserve thedescribed orderofthe battery terminals whenconnect-
ing and disconnec tingabattery.
R When jump-st arting,makesurethatthebattery poleswithidentical polarityareconn ected.
R Itis particularly importanttoobserve thedescribed orderwhenconnecting anddisconnec t-
ing the jumper cables.
R Never connectordisconnec tthe battery terminals whiletheengine isrunning. G
WARNING
A discharged batterycanfreeze attemperatures belowfreezing point.Whenjump-st artingthe
vehicle orcharging thebattery, gasescanescape fromthebattery. Thereisarisk ofan explo-
sion.
Allow thefrozen battery tothaw outbefore charging itor jump-st arting.
! Avoid
repeated andlengthy startingattempt s.Otherwise, thecatalytic convertercould be
damaged bythe non- combusted fuel.
If the indicator/warnin glamps donot light upatlow temperatures, itis very likely thatthedis-
charged batteryhasfrozen .In this case, youmay neither chargethebattery norjump-st artthe
vehicle. Theservice lifeofathawed-out batterymaybeshorter. Thestartin gcharacterist icscan
be impaired, particularly atlow temperatures. Havethethawed-out batterycheckedataqual i-
fied specialist workshop.
Do not start thevehicle usingarapid charging device.Ifyour vehicle's batteryisdischarged, the
engine canbejump-st artedfromanother vehicleorfrom adonor battery usingjumper cables.
Observe thefollowing points:
R The battery isnot accessible inall vehicles. Ifthe other vehicle's batteryisnot accessible,
jump-st artthe vehicle usingadonor battery orajump-st artingdevice.
R You may onlyjump-st artthe vehicle whentheengine andexhaust systemarecold.
R Do not start theengine ifthe battery isfrozen .Let the battery thawfirst.
R Only jump-st artfrom batteries witha12 Vvoltage rating.
R Only usejumper cableswhichhaveasufficient cross-sectionandinsulated terminalclamps.
R Ifthe battery isfully discharged, leavethebattery thatisbeing usedtojump-st artconn ected
for afew minutes beforeattempt ingtostart. Thischarges thebattery slightly.
R Make surethatthetwo vehicles donot touch.
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 118). Jump
-starting
261Breakdown assistance Z

Trans
portingthe vehic le
Veh icle swi th auto matic transmission !
Wh
enthe vehicleis load ed for transp ort,
the frontand rearaxl es mu stbe stationar y
and onthe same transp orta tionveh icle.
Po sitio ning overthe conne ctionpo int ofthe
tra nsp ortveh icleis not permi tted .The drive
tra inma yothe rwise be dama ged.
Al lve hic les !
Yo
uma yonl ysec urethe vehicleby the
wh eels,not byparts ofthe vehiclesu ch as
axl eor stee ringcomp onents. Othe rwise, the
veh iclecou ldbe dama ged.
The towingeyecan beused topullthe vehicle
onto atra iler or tra nsp orte rfor transp orting
pu rpo ses .
X Tu rn the Sma rtKeyto positio n0048 inthe igni-
tio nlock.
X Shi ftthe transmi ssion topositio n005C.
As soon asthe vehic lehas been loade d:
X Pre vent thevehiclefro mrol ling away by
ap plying the electri cpa rkin gbra ke.
X Shi ftthe transmi ssion topositio n005D.
X Tu rn the Sma rtKeyto positio n0092 inthe igni-
tio nlock and remove theSma rtKeyfro mthe
ig niti onlock.
X Secu rethe vehicle. Tow
-starti ng(emerg ency engine
starti ng)
! Veh
icles with automa tictransmi ssion mu st
not betow -sta rted .Yo ucou ldothe rwise
da ma gethe automa tictransmi ssion. Yo
ucan find informa tionon "Jum p-starting "at
(Y page 260 ). Fu
ses Impo
rtant safety notes G
WA
RNING
If yo uma nipulate orbridgeafa ulty fuse orif
yo urep lace itwi th afu se with ahighe r
am perage ,the electri ccab lescou ldbe ove r-
lo ad ed .Thi scou ldres ultin afir e. The reisa
ris kof an acc ident and injury.
Alw aysrep lace faulty fuses with the speci -
fie dnew fuses havin gthe corr ectamperage .
Blo wn fuses mustbe rep laced with fuses of
the same rating ,wh ich youcan reco gnizeby
the colorand value. The fuse rating sar elisted
in the fuse allo cati oncha rt.
The fuse allo cati oncha rtis locate din the vehi-
cle tool kitinthe stow agecomp artment under
the trunk floor (Y page 252 ).
If anew lyins erte dfu se also blow s,ha ve the
cau setraced and recti fiedat aqu alifi ed spe-
cia list wo rksh op,e.g .an author izedMe rced es-
Benz Center.
! Onl
yus efu ses thatha ve been appro ved
for Merced es-Benz vehicles and which have
the corr ectfuse rating forthe system con-
cern ed.Othe rwise, comp onents orsystem s
cou ldbe dama ged.
! Ma
kesure tha tno moi sturecan ente rthe
fu se boxwh en the cove ris op en.
! Wh
enclosing the cove r,ma kesure tha tit
is lying corr ectlyon the fuse box.Moi sture
see ping inor dirt cou ldothe rwise imp airthe
op era tionof the fuses .
The fuses inyour veh icleser vetoclo sedown
fa ulty cir cui ts. Ifafu se blow s,allthe comp o-
nents onthe circui tand theirfunctio nsstop
op era ting . Bef
ore chang ingafus e
X Swi tch offthe engine.
X Swi tch offallel ectri calcons umers. Fu
ses
265Break downass istanc e Z

X
Make surethattheignition isswitched off
(Y page 118).
or
X When usingtheSmartK ey,turn theSmart-
Key toposition 0092inthe ignition lockand
remove it(Y page 118).
X Secure thevehicle against rollingaway
(Y page 134).
All indicator lampsinthe instrumen tcluster
must beoff.
The fuses arelocated invarious fuseboxes:
R Fuse boxinthe engine compartmen ton the
left-hand sideofthe vehicle, whenviewed in
the direction oftravel
R Fuse boxinthe trunk Fuse
boxinthe engine compart ment
i Observe
the"Important safetynotes" sec-
tion (Ypage 265). G
WARNING
When thehood isopen andthewindshield
wipers aresetinmotion, youcan beinjured
by the wiper linkage. Thereisarisk ofinjury.
Always switchoffthe windshield wipersand
the ignition beforeopening thehood. X
Make surethatthewindshield wipersare
turned off.
X Open thehood.
X Use adry cloth toremove anymoisture
from thefuse box.
X To open: openclamps 0044.
X Remove fuseboxcover 0043forwards. X
To close :check whether theseal islying
correct lyin cover 0043.
X Insert cover0043atthe rear ofthe fuse box
into theretainer.
X Fold down cover 0043and close clamps 0044.
X Close thehood. Fuse
boxinthe trunk
i Observe
the"Important safetynotes" sec-
tion (Ypage 265). The
fuse boxislocated inthe trunk behind the
partition covering.
X Open thetrunk lid.
X To open: release cover0043onthe right and
left-hand sideswithaflat object .
X Open cover 0043downwards inthe direction
of the arrow. 266
FusesBr
eakdown assistance

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 292). 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 279)
R in thetire pre ssur etab lein thefuel filler flap
(Y page 133)
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. Op
era tion
267Wheels andtire s Z

Imp
ortant noteson tire pressu re G
WAR
NING
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
WAR
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
R prin tedin yellow ontherim oftheeme r-
gen cy/ collaps iblespar ewhee l(dep endin g
on veh icleequipm ent) Und
erinflated orover inflated tires
Und erinflated tires G
WAR
NING
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
WAR
NING
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. 272
Ti
re pressu reWheels andtire s

is
shown inthe Serv . Serv
.men uof the multif unc-
tion display. Ex
ample: currenttirepress uredisplay
For informat iononthe mess agedisplay, refer
to the "Check ingthe tirepress ureelect roni-
cally" section(Ypage 276).
Imp ortant safet ynotes G
WARN
ING
Eac htir e, inc luding thespare (ifprov ided),
should bechec kedatleast onceamon th
when coldandinflated tothe press urerec-
omme ndedbythe vehic lemanuf acturer on
the Tire andLoadin gInf ormat ionplacard on
the drive r'sdoor B-pillar orthe tirepress ure
label onthe inside ofthe fuel filler flap.If
your vehic lehas tires ofadiffe rentsize than
the size indic ated onthe Tire andLoadin g
Inf ormat ionplacard orthe tirepress ure
label, youshould determin ethe proper tire
press ureforthosetires.
As anadded safetyfeat ure, your vehic lehas
been equipped withatir epress uremon itor-
ing syst em(TPMS )that illuminat esalow tire
press uretelltalewhen oneormore ofyour
tir es are sign ifican tlyunder inflated. Accor d-
ingly, when thelow tirepress uretelltaleillu-
min ates, youshould stopand chec kyour
tir es assoon aspossible ,and inflate themto
the proper pressure.Drivin gon asign ifi-
can tlyunder inflated tirecauses thetireto
over heat andcanlead totirefailure. Under-
inf lation alsoreduc esfuel effic iencyand tire
tr ead life,and may affec tthe vehic le'shan-
dling andstopping ability.
Please notethat theTPMS isnot asubst i-
tut efor proper tiremaint enance,and itis
the drive r'srespo nsibilit yto maint aincor-
rec ttir epress ure,even ifunder inflation has not
reach edthe level totrigger illuminat ion
of the TPMS lowtirepress uretelltale.
Your vehic lehas also been equipped witha
TPMS malfun ction indic atortoindic ateifthe
syst emisnot operat ingproper ly.The TPMS
malfun ction indic atoriscom bined withthe
low tirepress uretelltale. When thesyst em
dete ctsa malfun ction, thewarnin glamp will
flash forapprox imatelyamin ute and then
remain continuously illuminat ed.This
sequen cewill berepeat edever ytim ethe
vehic leisstar ted aslong asthe malfun ction
exis ts.
When themalfun ction indic atorisillumina-
ted, thesyst emmay notbeable todete ctor
sign allow tirepress ureasintended .TPMS
malfun ctions may occurfor avariet yof rea-
son s,inc luding theinstallation ofinc ompat i-
ble replac ementor alter natetir es orwheels
on the vehic lethat preventtheTPMS from
func tioningproper ly.Always checkthe
TPMS malfun ction tellt aleafterreplac ing
one ormore tires orwheels onyour vehic le
to ens ure that thereplac ementor alter nate
tir es and wheels allowtheTPMS tocon tinue
to func tion proper ly.
It is the drive r'srespo nsibilitytoset the tire
press uretothat recomme ndedforcold tires
which issuitable forthe operat ingsituat ion
(Y page 270).Not ethat thecorrecttir epres-
sure forthe curr entoperat ingsituat ionmust
firs tbe taught -intothe tirepress uremon itor.
If asubst antialloss ofpress ureoccurs, the
warnin gthr eshold forthe warnin gmess ageis
aligned tothe taught -inrefe rencevalues.
Restar tthe tirepress uremon itorafteradjust -
ing the press ureofthe cold tires
(Y page 277). Thecurrentpress uresare
saved asnew referencevalues. Asaresult ,a
warnin gmess agewillappear ifthe tirepres-
sure drops significant ly.
The tirepress uremon itordoes notwarn youof
an incorre ctly set tirepress ure.Obser vethe
not eson the recomme ndedtirepress ure
(Y page 270).
The tirepress uremon itorisnot able towarn
you ofasudden lossofpress ure,e.g.ifthe
tir eis penet ratedby afor eign object.In the
even tof asudden lossofpress ure,bringthe Tir
epr essur e
275Wheels andtires Z

If
the wheel positio nson the vehicle arerota-
ted, thetire pressu resmay bedispl ayedfor
the wrong positionsfor ashort time.Thisis
rectified afterafew minutes ofdriving, andthe
tire pressu resare displ ayedfor the correct
positio ns.
Restarting thetire pressure monitor When
yourestart thetire pressu remonitor, all
existing warning message sare dele tedand the
warning lampsgo out. Themonitor usesthe
currently settire pressu resasthe reference
valu esfor monitoring. Inmost cases, thetire
pressu remonitor willautoma ticallydetect the
new reference valuesafter youhave changed
the tire pressu re.However, youcan also set
reference valuesmanua llyas describe dhere.
The tirepressu remonitor thenmonitors the
new tirepressu revalu es.
X Set thetire pressu reto the valu erecom-
mended forthe corresponding drivingsitua-
tion onthe Tire andLoadi ngInformation
pla card onthe driver's sideB-pilla r
(Y page 270).
Additional tirepressu revalu esfor different
load scan also befound onthe tire pressu re
table onthe inside ofthe fuel fillerflap
(Y page 270).
X Make surethatthetire pressu reiscorrect
on allfour wheel s.
X Ensure thattheSmartKey isin positio n0048
in the ignition lock.
X Press the0059 or0065 button onthe steer-
ing wheel toselect theServ. Serv.
menu.
X Press the0063 or0064 button toselect
Tire Pressure Tire
Pressure.
X Press 0076.
The multifu nctiondisplayshows thecurrent
tire pressu refor the individ ualtires orthe
Tire pressure willbedisplayed Tire
pressure willbedisplayed
after driving afew minutes after
driving afew minutes message.
X Press the0064 button.
The Use Current Pressures asNew Use
Current Pressures asNew
Reference Values Reference
Valuesmessage appearsinthe
multifu nctiondisplay.
If you wishto con firm therestart:
X Press 0076.
The Tire Press. Monitor Restarted Tire
Press. Monitor Restarted
messag eappe arsinthe multifu nctiondis-
pla y. After
driving forafew minutes, thesystem
checks whether thecurrent tirepressu res
are within thespecifie drange. Thenew tire
pressu resare then accepted asreference
valu esand monitored.
If you wishto canc elthe restart:
X Press 0038.
The tirepressu revalu esstored atthe last
restart willcontinue tobe monitored. Tire
pressure
277Wheelsand tires Z

Clean
theco ntact surf aces ofthewheel and
th ebrak edisc thoro ughly everytim eawheel
is rot ate d.Chec kth etir epre ssur eand ,if ne c-
ess ary, restartth etir epre ssur eloss warn ing
syst emorthetir epre ssur emon itor. Direct
ionofrot ation
Tire swit haspec ifieddire ction ofrot atio nhave
addit ionalben efits,e.g .if th ere isaris kof
hydr oplan ing.Thes eadvan tagescan onlybe
gain edifth etir es are install ed correspo nding
to thedire ction ofrot atio n.
An arrow onthesidew allofthetir eind icat es
its correct dire ction ofrot atio n. St
ori ng wheels
St ore wheel sth at are notbein gused inaco ol,
dry and preferably dark place.Pro tect thetir es
fr om oil,grease, gaso lineand diese l. Mou
nting awheel
Pr epa ringth evehi cle X
Stop theveh icle onsolid ,no n-slipp eryand
leve lgro und.
X Ap ply theelec tric park ingbrak eman ually.
X Bring thefron twheel sint oth est raigh t-
ahead position.
X Sh ift thetrans mis sion toposi tion005D.
X Swit choff theen gin e.
X Veh icles withoutKEYLESS- GO:remove
th eSm artKey from theign ition lock.
X Veh icles withKEYLESS- GO:open thedriv -
er' sdoor .
The vehicle elec tron ics nowhave status 0.
This isthesame astheSm artKey having
been removed.
X Veh icles withKEYLESS- GO:remove the
St art /S topbut tonfrom theign ition lock
(Y page 118).
X Ifinc luded intheveh icle equipm ent,rem ove
th etir e-ch ang eto ol kit from theveh icle.
X Saf eguar dth eveh icle again stroll ing away.
i Due
todiff ere nces inveh icle equipm ent,
no tall veh iclesare equipp edwithatir e-
ch ang eto ol kit .For inform ationon whic h to
ols are required toper formawheel
ch ang eon your vehicle,co nsult anauth or-
ize dMer cedes-Ben zCen ter.
Nec essary tire-ch ang ingtools can include,
for example :
R Jack
R Whee lch oc k
R Lug wren ch
Secur ingthevehi cletoprevent itfrom
rol ling away If
your vehicle isequipp edwithawheel choc k,
it can befoun din thetir e-ch ang eto ol kit
(Y page 252).
The foldingwheel choc kis an addit ionalsafe ty
meas uretopre ven tth eveh icle from rolling
away, forexample whenchang ingawheel .
X Fol dbot hplat esupward s0043.
X Fol dout lower plate0044.
X Guide thelugs onthelower platefully into
th eopen ingsin base plate0087. X
Plac ech oc ks orother suitable items unde r
th efron tand rear ofthewheel that isdiago-
nall yoppo siteth ewheel youwish to
ch ang e. Cha
nging awheel
289Wheels andtires Z