2019 MERCEDES-BENZ SLC ROADSTER brakes

econ
omical driving. Ahigher levelindicat esa
more economical driving style.Ifthe three
outer areas arecomplet elyfilled atthe same
time, thedriver hasadopted themost eco-
nomic aldriving styleforthe select edsett ings
and prevailing conditions .The ECO display
border lightsup.
The ECO display doesnotindicat ethe actual
fuel consumption .The additionally achieved
range displayed underBonus fr.start Bonus
fr.start does
not indicat eafixed consumption reduction.
In addition todriving style,theactual con-
sumption isaffect edbyother factors, such as:
R load
R tire pressure
R cold start
R choice ofroute
R active electricalconsumers
These factorsare not included inthe ECO dis-
play.
An econ omical driving stylespecially requires
driving atmoderate enginespeeds.
Ach ieving ahigher valueinthe categor ies
"Acc eleration" and"Constan t":
R observe thegearshift recommendat ions.
R drive thevehicle indrive program Cor E.
In urban trafficand stop- start traffic,drive pro-
gram Cis recom mended.
On long journ eysatacon stant speed, e.g.on
the highway, onlytheouter areafor"const ant"
will change.
The ECO display summarizes thedriving style
from thestart ofthe journ eytoits complet ion.
Therefor e,there aremore marked changes in
the outer areas atthe start ofajourn ey.On
longer journeys,there arefewer changes .For
more marked changes ,perform amanual rest
(Y page 171).
Furt herinfor mation onthe ECO display
(Y page 170). Br
aking
Impor tantsafety notes G
WARN
ING
If you shift down onaslippery roadsurface
in an attem pttoincr ease theengine' sbrak-
ing effec t,the drive wheels couldlosetheir grip.
There isan incr eased danger ofskid-
ding andacciden ts.
Do not shift down foradditional enginebrak-
ing onaslippery roadsurface.
Downhill gradients !
On
long, steep gradient s,you must reduce
the load onthe brakes. Touse engine brak-
ing, shift toalower gearingood time. This
helps youtoavoid overheat ingthe brakes
and wearing themoutexces sively.
When making useofthe engine braking
effec t,itis possible thatadrive wheel may
not turn forsome time,e.g.inthe case of
suddenly changingor slippery roadsurface
con ditions .This could cause damage tothe
drive train.This type ofdamage isnot cov-
ered bythe Mercedes- Benzwarrant y.
Change intoalower gearingood timeonlong
and steep downhill gradients.This isespecially
import antifthe vehicle isladen.
This also applies ifyou have activat edcruise
con trol orAct ive Dist ance Assist DISTRONIC.
Heavy andlight loads G
WARN
ING
If you rest your footonthe brake pedal
while driving, thebraking systemcanover-
heat. Thisincreases thestoppin gdistanc e
and caneven cause thebraking systemto
fail. There isarisk ofan acciden t.
Never usethebrake pedalasafootr est.
Never depress thebrake pedalandthe
accelerat orpedal atthe same time.
! Depress
ingthe brake pedalconstant ly
results inexces siveandpremature wearto
the brake pads.
If the brakes havebeen subject edtoaheavy
load, donot stop thevehicle immediately, but
drive onfor ashort while. Thisallows theair-
flow tocool thebrakes morequickly.
Wet roads If
you have driven foralong time inheavy rain
without braking,there maybeadelayed reac-
tion from thebrakes whenbraking forthe first Driving
tips
139Driving andparking Z

tim
e.Thi sma yal so occu raf ter the vehicleha s
be en washe dor driven throughde ep water.
Yo uthe nha ve todepre ssthe brakepedal
mor efir ml y.Ma inta inagre aterdi sta nce from
the vehiclein fro nt.
After drivin gon awe troa dor havin gthe vehi-
cle washe d,bra kefirml ywh ile pa ying atte ntion
to the trafficcond itions .Thi swi llwa rm upthe
bra kediscs ,the reb ydry ing themmor equ ickl y
and protecti ngthe magainst corr osion.
Li mite dbrak ingperf orman ceon salt-
treate droad s If
yo udri ve on salte droa ds,a laye rof saltres i-
du ema yfor mon the brakediscs and brake
pa ds.Thi scan resultin asigni ficantl ylo nge r
bra king dista nce.
R In ord erto pre vent anysaltbu ild-u p,apply
the brakes occa siona lly wh ile pa ying atte n-
tio nto the trafficcond itions .
R Ca ref ully de pre ssthe brakepedaland the
be ginning andend ofajou rney .
R Ma inta inagre aterdi sta nce tothe vehicle
ah ead.
Se rvi cing the brak es !
The
brakefluidlevel maybe too low, if:
R ifthe red brakewarning lamp lights upin
the instrument cluste rand
R youhe ar awa rning tone while the engine
is running
Ob serve additio nal warning mes sage sin the
mu ltifu nctio ndisp lay.
The brakefluidlevel maybe too low du eto
bra kepadwe aror leaki ng bra kelines .
Hav ethe brakesyste mche cked immed i-
ate ly.Co nsu ltaqu alifi ed speci alistwo rk-
sho pto arrange this.
! As
the ESP ®
sy ste mopera tes automa ti-
cal ly,the engineand theigniti onmu stbe
sw itch edoff (theSma rtKeymu stbe inpo si-
tio n0092 or0047 inthe igniti onlock), ifthe
el ectri cpa rki ng bra keistes ted onabra king
dy nam ome ter(ma ximum 10second s).
Braki ngtrigg eredau toma tically by ESP ®
may causeseve redamag eto the brakesys-
tem. All
checks andmaintenance workon the brake
sy stem mustbe carri edoutat aqu alifi ed spe -
cia list wor kshop .
Have brakepads insta lled and brakefluid
rep laced ataqu alifi ed spe cialist wor kshop .
If the brakesystem hasonly beensub ject to
mode rateloads, youshou ldtest thefuncti on-
al ity ofyour bra kes atregu larinterv als.
Informa tiononBAS (BrakeAssi st)(Ypage 57).
Merce des-Benz recom mends thatyouonly
hav ebra kepads/l inings insta lled on your vehi -
cle whichhav ebee nap prov edfor Merce des-
Benz vehicles orwhi chcorre spondtoan
equ ivalent quality stand ard.Brake pads/
li nings whichhav enot beenap prov edfor
Merce des-Benz vehicles orwhi chare not ofan
equ ivalent quality cou ldaffe ctyour vehi cle's
ope ratingsafety .
Merce des-Benz recom mends thatyouonly use
bra kefluidthat hasbeenspe cially ap prov ed
for your vehi clebyMerce des-Benz, orwhi ch
corre sponds toan equ ivalent quality stand ard.
Brake fluidwhi chhas notbeenap prov edfor
Merce des-Benz vehicles orwhi chisnot ofan
equ ivalent quality cou ldaffe ctyour vehi cle's
ope ratingsafety .
Hig h-perfo rmance brakesystem
(e xc ept Merc edes-AMG SLC 43) AMG
brakesystems aredesigne dfor hea vy
loa dsand havecompo nentswith corre spond-
ing prop erties.Thi smay leadto nois ewhe n
bra king. Thiswi lldep end on:
R Spee d
R Braki ngforce
R Ambi entcondi tions, e.g.tempe ratureand
hu mid ity
The wearofindi vidualcompo nentsofthe
bra kesystem, suchasthe brakepads/l inings
or bra kediscs, depends onthe individualdri v-
ing styleand operatingcondi tions.
For this reason, itis imp ossi ble to state amil e-
ag ethat willbe validund erallcircu mstance s.
An aggres sive driving stylewi lllea dto hig h
we ar. You canobta inmore informationonthis
from aqu alifi ed spe cialist wor kshop .
New andreplaced brakepads and discs only
rea chthei ropti mum braking effectafte rsev-
era lhu ndred kilometer sof dri ving. Compe n-
sate forthis byapplying grea terforce tothe
bra keped al.Kee pthis inmind ,and adaptyo ur 140
Dri
vin gtipsDri vin gand parking

As
ares ult, Active Distance Assist
DISTR ONICma ynei ther give warning snor
inte rveneinsuch situa tions. The reisaris k
of an acci dent.
Alw ayspa ycar efulatte ntionto the traffic
si tua tionand berea dytobra ke. G
WA
RNING
Dis tance keeping assista ntcanno tal wa ys
cle arly identi fyothe rroa dus ers and com-
pl ex traf ficsitua tions.
In such cas es, dista nce keeping assista nt
can:
R acce lera te or bra kethe vehicleune xpect-
ed ly
R inte rveneune xpected ly
The reisaris kof an acci dent.
Co ntinu eto drive car efully and berea dyto
bra ke, especially ifdista nce keeping assis-
tant warns you. G
WA
RNING
Active Distance AssistDISTR ONICbra kes
yo ur veh iclewi th up to50% ofthe maximu m
po ssi ble de cel era tion.Ifthi sde cel era tionis
not sufficie nt, Active Distance Assist
DISTR ONICalerts youwi th avis ualand
aco ustic warning .The reisaris kof an acci -
de nt.
Adju styour spe edinthes ecas esand main-
tai nsu fficie ntdista nce.
App lythe brakes yoursel fand /or take eva-
si ve acti on.
! Whe
nActive Distance AssistDISTR ONIC
or the HOLD functio nis acti vated ,the vehi-
cle brakes automa tically in certa insitua -
tio ns.
To avoid da ma getothe vehicle, de acti vate
Active Distance AssistDISTR ONICand the
HOLD functio nin the followi ng orsimil arsit-
ua tio ns:
R wh en tow ingthe vehicle
R in the carwash
Active Distance AssistDISTR ONICcan neither
red uce theriskof an acci dent ifyo ufai lto ad
aptyo ur driving style,nor override the laws
of phy sics. Active Distance AssistDISTR ONIC
canno ttake intoacco untroad,we ath eror traf -
fic cond itions. Active Distance Assist
DISTR ONICis onl yan aid. Yo uar eres ponsi ble
for the dista nce tothe vehiclein front, for
veh iclespe ed,for braking ingoo dtime andfor
sta ying inyour lane.
Do not useActive Distance AssistDISTR ONIC:
R In roa dand trafficcond itions which donot
al lo w yo uto ma inta inaconsta ntspe ed,e.g .
in hea vytraf ficoron windi ng roa ds
R on slip pe ry roa dsu rfa ces .Bra king oracce l-
era ting couldcau sethe drive wheelsto lose
trac tionand thevehiclecou ldthen skid
R In po or vis ibility ,e.g .du eto fog ,hea vyrain
or snow
Active Distance AssistDISTR ONICma ynot
de tect narrow vehicles driving infront, e.g.
moto rcycles,or veh icles driving inasta gge red
form ation.
In particu lar, the detecti onofobsta clescan be
imp aired if:
R The reisdirt on the sens orsorany thing else
cove ringthesens ors
R The reissnow orhea vyrain
R The reisinte rference byothe rra da rsou rces
R The rearestro ngrada rref lectio ns,forexa m-
pl e in pa rking garages
If Active Distance AssistDISTR ONICno longe r
de tects aveh iclein front, Distance Pilot
DISTR ONICma yune xpected lyacce lera te to
the speedstor ed.
Thi sspe edmay:
R Be too high ifyo uar edri ving inaturn ing
la ne oran exitla ne
R Be sohigh when driving inthe right-ha nd
la ne tha tyo uove rtake vehicles inthe left-
ha nd lane
R Be sohigh inthe left lane tha tyo upa ss
veh icles driving onthe right
If ther eis acha nge ofdri ver s,ad vis ethe new
dri ver ofthe speedstor ed. Dri
ving sys tems
145Dr ivi ng andparki ng Z

Active
Distance AssistDISTR ONICha snot yet
de tecte dthe vehiclein front onthe edge of
the roadbe cau seofits nar row width. Thedis-
tance tothe vehiclein front willbe too short.
Ob struc tions and stati onary vehic les Active
Distance AssistDISTR ONICdo es not
bra kefor obsta clesor sta tionar yveh icles. If,
for exa mpl e,the detecte dveh icleturn sa cor-
ner and anobsta cle orsta tionar yveh icleis
rev ealed, Active Distance AssistDISTR ONIC
wi llnot brakefor them .
Cro ssingve hic les Active
Distance AssistDISTR ONICma ymis -
take nlydetect vehicles tha tar ecros sing your
la ne.
If yo uacti vate Active Distance Assist
DISTR ONICund erthe followi ng cond itions, the
veh iclecou ldpu llaw ay uni ntenti onally:
R at traf ficlights with cros sing traf fic, for
exa mpl e
R ifther eis aveh iclein front, aftera cros sing,
wi th the HOLD functio nacti vated HOL
Dfun ction
Ge neral notes The
HOLD functio ncan assist the driver inthe
fol lowi ng situa tions:
R Whe npu lling away,esp ecially on stee p
sl op es
R Whe nma neu vering onstee pslop es
R Whe nwa iting intraf fic
The vehicleis kep tsta tionar ywi thou tthe
dri ver having todepre ssthe brakepedal.
The braking effectiscance led and theHOLD
fu nctio nde acti vated when youde pre ssthe
acce lera tor pedalto pullaw ay.
Impo rtant safetynotes G
WA
RNING
If the vehicleis onl ybra ked using the HOLD
fu nctio n,the vehiclema yrol law ay inthe fol-
lo wi ng situa tions when youleav ethe vehi-
cle :
R ifther eis ama lfunctio nin the system or
in the voltag esu pp ly
R ifthe HOLD functio nis de acti vated by
de pre ssing the acce lera tor pedalor bra ke
pe dal,e.g .by aveh icleoccu pant
The reisaris kof an acci dent.
Alw aysde acti vate the HOLD functio nand
sec urethe vehicleag ainst rolling away
be fore youleav eit.
! Whe
nActive Distance AssistDISTR ONIC
or the HOLD functio nis acti vated ,the vehi-
cle brakes automa tically in certa insitua -
tio ns.
To avoid da ma getothe vehicle, de acti vate
Active Distance AssistDISTR ONICand the
HOLD functio nin the followi ng orsimil arsit-
ua tio ns:
R wh en tow ingthe vehicle
R in the carwash
Dea ctiva tingtheHOLD functio n(Y page 152 ). Dri
ving sys tems
151Dr ivi ng andparki ng Z

Selec
tingtheComfort orEcon omy
drive progra ms In
the Comfort andEcono mydrive programs,
the driving characterist icsofyour vehicle are
more comfort able.Select oneofthese drive
programs ifyou favor amore comfort abledriv-
ing style. Alsoselect thesedriveprograms
when driving fastonstraight roads,e.g.on
straight stretches ofhighway .
In urban traffic andstop-st arttraffic, drivepro-
gram Cis recommen ded.
X Press DYNAMI CSEL ECT button 0043repeat-
edly until theComfort orEcono mydrive
program isselected.
Selec tingSport mode The
firmer settingof the suspension tuningin
the Sport driveprogram ensuresevenbetter
cont actwith theroad. Select thisdrive pro-
gram when employing asporty driving style,
e.g. onwinding countryroads.
X Press DYNAMIC SELECT button 0043asmany
times asnecessary untiltheSport drive
program isselected.
Selec tingSport Plusmode The
firmer suspension settingsinthe Sport
Plus drive program ensureevenbetter contact
with theroad. Select thismode whenemploy-
ing asporty driving style,e.g.onwinding coun-
try roads or,ideall y,when driving onclosed
race circuits.
X Press DYNAMIC SELECT button 0043repeat-
edly until theSport Plusdrive program is
selected. Parking
AssistPARKTRONIC
Import antsafety notes Parking
AssistPARKTRONIC isan electron ic
parking aidwith ultrasound. Itmonitor sthe
area around yourvehicle usingsixsensors in
the front bumper andfour sensors inthe rear
bumper. ParkingAssistPARKTRONIC visually
and audib lyindicates thedistance between
your vehicle andanobject .
Parking AssistPARKTRONIC isonly anaid. Itis
not areplacement foryour atten tiontoyour
immediate surroundings. Youarealwa ys
responsible forsafe maneuvering, parkingand
exiting aparking space.Makesurethatthere
are nopersons, animalsorobject sin the
maneuvering areawhen youaremaneuvering
or parking.
! When
parking, payparticular attentionto
object sabove orbelow thesensors, suchas
flower potsortrailer drawbars.
PARKTRONIC doesnotdetect suchobject s
when theyareinthe immediate vicinityof
the vehicle. Youcould damage thevehicle
or the object s.
The sensors maynotdetect snowandother
object sthat absorb ultrasonic waves.
Ultrasonic sourcessuchasan automatic car
wash, thecompressed-air brakesonatruck
or apneumatic drillcould cause
PARKTRONIC tomalfunction .
PARKTRONIC maynotfunct ioncorrect lyon
uneven terrain.
Parking AssistPARKTRONIC isactivated auto-
matically whenyou:
R switch onthe ignition
R shift thetransm issiontoposition 005B,005Eor
005C
R release theelectric parking brake
Parking AssistPARKTRONIC isdeactivated at
speeds above11mph (18km/h). Itis reacti-
vated atlower speeds. Driving
systems
153Drivingandparking Z

R
solvents
R cleaning agentscontaining solvents
Do not scrub.
Do not touch thesurfaces andfilms with
hard objects, e.g.rings orice scrapers. Oth-
erwise, youmay scratch ordamage thesur-
faces andfilms.
! Do
not park yourvehicle foralong period
of time directly aftercleaning, particularly
after cleaning thewheel rimwith wheel
cleaner. Wheelcleaner canlead tothe
increased corrosionofthe brake discsand
pads. Therefore, driveforafew minutes
after cleaning. Byheating upthe brakes, the
brake discsandpads dry.Thevehicle can
then beparked foralong period oftime.
Regu larcare ofyour vehicle isacondition for
retaining thequal ityinthe long term.
Use care products andcleaning agentsrecom-
mended andapproved byMercedes-Benz . Washing
thevehicl eand cleani ng
the paintwork
Automatic carwash G
WARNING
Braking efficiency isreduced afterwashing
the vehicle. Thereisarisk ofan accident.
Aft erthe vehicle hasbeen washed, brake
carefully whilepayingattent iontothe traffic
conditions untilfullbraking poweris
restored.
! When
DISTRONIC PLUSorthe HOLD func-
tion isactivated, thevehicle brakesauto-
matically incertain situations.
To avoid damage tothe vehicle, deactivate
DISTRONIC PLUSandtheHOLD function in
the followi ngorsimilar situations:
R when towing thevehicle
R in the carwash
! It
is preferable touse carwashes with
adjustable high-pressure pre-cleaningthat
corresponds tothe specification forthe
Cabri oletprogram. Incar washes thatuse
high water pressures, thereisarisk that a
small amount ofwater mayleakintothe
vehicle. !
Lock
thecarifyou wash itin an automatic
car wash. Otherwise, thevehicle mightbe
damaged .
! Never
cleanyourvehicle inaTouchless
Automatic CarWash asthese usespecial
cleaning agents.Thesecleaning agentscan
damage thepaintwork orplastic parts.
If you have yourvehicle cleaned inahigh-
pressure automatic carwash, small
amounts ofwater mayenter thevehicle.
! Make
surethattheautomatic transmission
is in position Nwhen washing yourvehicle
in atow-through carwash. Thevehicle could
be damaged ifthe transmission isin another
position.
! Make
surethat:
R the side windows andtheroof arecom-
pletely closed
R the climate controlblower isswitched off
R the windshiel dwiper switch isat position
0
The vehicle couldotherwise bedamaged .
You canclean thevehicle atan automatic car
wash fromthevery start.
Preferably cleanthevehicle atautomatic car
washes thatusetextilewashing elements
without brushes. Thisprevents finescratches
from forming onthe paintwork andfilm.
If the vehicle isvery dirty, pre-wash itbefore
cleaning itin an automatic carwash.
Aft erusing anautomatic carwash, wipeoff
wax from thewindshiel dand thewiper blades.
This willprevent smearsandreduce wiping
noises caused byresidue onthe windshiel d.
i Vehicles
withdecorative film:select a
wash program withouthotwax atthe auto-
matic carwash.
Washing byhand In
some countries, washingbyhand isonly
allow edatspeciall yequip pedwashing bays.
Observe thelegal requirements ineach coun-
try.
X Do not use hotwater anddonot wash the
vehicle indirect sunlight.
X Use asoft sponge toclean.
X Use amild cleaning agent,suchasacar
shampoo approved byMercedes-Benz .246
CareMaintenance
andcare

The
table shows whichengine oilshave been
approved foryour vehicle. Model MB-Fr
eigabe or
MB-Ap proval All
models 229.
5 i
MB
approval isindicated onthe oilcon-
tainers.
Fillin gcapacities The
following valuesrefertoan oilchange
including theoilfilter. Model Capacity
SLC
300 6.7
USqt(6.3 l) Merce
des-AMG
SLC 43 6.9
USqt(6.5 l) Ad
diti ves !
Do
not useany additive sin the engi neoil.
Thi scou ldda mag ethe engi ne. Brake
fluid G
WARNI
NG
The brakefluidconsta ntlyabsorb smoi stur e
from theair. Thi slo we rsthe boiling pointof
the brakefluid.If the boiling pointofthe
bra kefluidistoo low, vap orpocke tsmay
form inthe brakesystem when the brakes
are applied ha rd. Thiswo uld imp airbra king
effi ciency. Thereisaris kof an acci dent.
Yo usho uld ha ve the brakefluidrene wedat
the specified inter vals.
Whe nha ndl ing brakefluid,obs erve theimpor-
tant safety notes onservice products
(Y page 298 ).
The brakefluidcha nge inter valscan befou nd
in the Maintena nceBookl et.
Only usebra kefluidap pro ved byMer cedes-
Benz inacco rdance with MB-Fre igab eor MB-
Appr oval331.0.
Infor mationabou tap pro ved brakefluidcan be
obta inedat any qualifi ed spe cialist wo rksho p or
on the Interne tat
http://b evo.merce des-benz.co m.
i Have
thebrakefluidregu larly repl aced ata
qu alifi ed spe cialist wor kshop andthe
repl acem entconfirm edinthe Maintenance
Bookl et. Co
olant
Importan tsafe tynotes G
WARNI
NG
If antifr eezecomes intocontact with hot
compo nentsinthe engi necompa rtment, it
may ignite.The reisarisk offire and injury .
Let the engi necool downbefo reyouad d
antifr eeze.Make surethat antifr eezeisnot
spi lled next tothe filler neck. Thoroughly
clea nthe antifr eezefrom compo nents
befo restarti ngthe engi ne.
! Only
addcool antthat hasbeenprem ixed
wi th the desiredantifr eezeprote ction. You
coul dotherw isedamag ethe engi ne.
You canfind additi onal notes onthe cool ant
in the followi ngplaces:
R in the Merce des-Benz Specifications for
Servi ceProd ucts, MBBeVo 310.1
- on the Internet at
http://be vo.mercedes-benz.com
- on the Merce des-Benz BeVoapp
R aqu alifi ed spe cialized workshop
! Alwa
ysuse asui tabl ecool antmixtu re,
even incountri eswhe rehig htempe ratures
prev ail.
Otherw ise,the engi necool ingsystem isnot
suff iciently prote ctedfrom corros ionand
overh eating.
i Have
thecool antregu larly repl aced ata
qu alifi ed spe cialist wor kshop andthe
repl acem entconfirm edinthe Maintenance
Bookl et.
Com plywith the important safetynotes for
servi ceprod ucts whenhand ling cool ant
(Y page 298 ). Servi
ceproducts andfilling capac ities
301Tec hnical data Z