2020 MERCEDES-BENZ SLC ROADSTER battery

G
WARNING
After ashort time, hillstart assistwil lnol on-
ger brake yourvehicl eand itcoul droll awa y.
There isar isk ofan accide ntand injury .
There fore,quickly move yourfoot from the
brake pedaltot he accele ratorpedal.Never
lea vethe vehicl ewhen itis held byhillstart
assi st.
Hill start assistisnot active if:
R you arepulling awayonal evelroad oron a
dow nhill gradient
R the transmissi onisin posi tion 005C
R the electric parkingbrake isapp lied
R ESP ®
is malfu nctioning EC
Os tart/stop function
Introduc tion The
ECO start/stop functionswitches the
engine offautomatical lyifthe vehicl eiss top-
ped under certain conditions.
The engine startsautomatica llywhen the
drive rwants topul lawa ya gain. The ECO
start/stop functiontherebyhelpsyou to
redu cethe fuel consumpti onand emiss ionsof
you rvehicl e.
Important safetynotes G
WARNING
If the engine isswi tched offautomatica lly
and youexit thevehicl e,the engine is
restarted automatical ly.T he vehicl emay
begi nmoving. Thereisar isk ofaccide ntand
injury .
If you wishtoe xitthe vehicl e,alw ayst urn
off the ignitio nand secure thevehicl e
aga inst rolling awa y. Gene
ralnote s 0043
ECO start/stop display
The ECO start/stop functionisactiva ted
whene veryou switch onthe engine using the
SmartKey orthe Start/Stop button.
If the engine hasbeen switched offautomati-
call ybythe ECO start/stop function,the00D6
ECO symb olisshow nint he multi function dis-
pla y.
Automatic engineswitch-off If
the vehicl eisb raked toas tandstil lwith the
transmissi onin005B or005C,t heECO start/stop
function switches offthe engine automatical ly.
The ECO start/stop functionisopera tional
when:
R the indica torlamp inthe ECO button islit
green
R the outsi detempera tureiswithi nthe range
that issui table forthe system
R the engine isat normal operatingtempera -
ture
R the settempera tureforthe vehicl einterior
has been reache d
R the battery issuffi ciently charged
R the system detects thatthewinds hieldis
not fogged upwhen theair-condi tioningsys-
tem isswi tched on
R the hood isclosed
R the drive r'sdoor isclosed andthedrive r's
seat beltisf astened
All ofthe vehicl e'ssystems remainactive
when theengine isstoppe dautomatical ly.
Automatic engineswitch-off cantake placea
maximu moffour times inar ow (initi alstop,
then three subsequ entstops).
The HOLD function canbeactiva tedifthe
engine hasbeen switched offautomatical ly.I t
is then notnecessa ryto continue applying the
brakes duringthe automatic stopphase.When
you depre ssthe accele ratorpedal,the engine Drivi
ng
121Drivi ngand parking Z

starts
automatically andthebraking effectof
the HOLD function isdeactivated.
Automatic enginestart The
engine startsautomatically if:
R you switch offthe ECO start/st opfunction
by pressing theECO button
R you release thebrake pedalintransmission
position 005Bor005C and theHOLD function is
not active
R you depress theaccelerator pedal
R you engage reverse gear005E
R you move thetransmission outofposition
005D
R you switch todrive program S+
R you unfasten yourseatbeltoropen thedriv-
er's door
R the vehicle startstoroll
R the brake system requires this
R the temperature inthe vehicle interior devi-
ates from thesetrange
R the system detects moisture onthe wind-
shield whentheair-conditioning systemis
switched on
R the battery's condition ofcharge istoo low Shifting
thetransmission toposition 005Ddoes
not start theengine.
Deac tivating oractivating theECO
start /stop function X
To deactivate: pressECObutton 0043.
Indicator lamp0044goes out.
X To activate: pressECObutton 0043.
Indicator lamp0044lights up.
If indicator lamp0044isoff, theECO start/st op
function hasbeen deactivated manuallyoras
the result ofam alfunction. Theengine will
then notbeswitched offautomaticall ywhen
the vehicle stops. 122
DrivingDriving
andparking

Problems
withtheengine Problem
Possible
causes/co nsequences and0050 0050
Solutions The
engine doesnot
start. The
HOLD functionorAct ive Distanc eAssist DISTRONIC isactiva-
ted.
X Deactivat ethe HOLD function(Ypage 152)orAct ive Distanc e
Assist DISTRONIC (Ypage 150).
X Try tostart theengine again. The
engine doesnot
start. Thestarter motor
can beheard. R
There isam alfunction inthe engine electron ics.
R There isam alfunction inthe fuel supply .
Before attempt ingtostart theengine again:
X Turn theSmartK eyback toposition 0092inthe ignition lock.
or X Press theStart /Stopbutton repeatedly untilallindicator lampsin
the instrumen tcluster goout.
X Try tostart theengine again(Ypage 119). Avoid excessively long
and frequent attemptstos tart theengine asthese willdrain the
battery.
If the engine doesnotstart after several attempt s:
X Consult aquali fied specialist workshop. The
engine doesnot
start. Youcannot hear
the starter motor. The
on-board voltageistoo low because thebattery istoo weak or
discharged.
X Jump-start thevehicle (Ypage 261).
If the engine doesnotstart despite attemptstoj ump-st artit:
X Consult aquali fied specialist workshop. The
starter motorwasexposed toathermal loadthatwastoohigh.
X Allow thestarter motortocool down forapproximately two
minutes.
X Try tostart theengine again.
If the engine stilldoes notstart:
X Consult aquali fied specialist workshop. The
engine isnot run-
ning smoothly andis
misfiring. There
isam alfunction inthe engine electron icsorinam echanical
componen tofthe engine management system.
X Only depress theaccelerator pedalslightly.
Otherwise, non-combusted fuelmay getinto thecatalytic con-
verter anddamage it.
X Have thecause rectified immediately ataq uali fied specialist
workshop. Driving
123Drivingandparking Z

Dur
ing braking :
R aw arning tone sounds
R the ReleaseParkin gBrake Rel
easeParkin gBrake mes sage
ap pe ars
R the red 0049 (USA only)or 0024 (Cana da
onl y)ind icator lamp inthe instrument clus-
ter flashe s
Wh enthe vehicleh asbeen bra ked toas tand-
sti ll,t he electri cparkin gb rake isap plied. Parki
ngthe vehic leforal ongp eriod
If yo ul eave the vehiclep arked forlonge rtha n
fou rweeks,the battery maybed amaged by
exh austive disch arging.
If yo ul eave the vehiclep arked forlonge rtha n
si xw eeks,the veh iclem aysuffe rd am agea sa
res ulto flac ko fuse.
X Visitaq ualifi ed speci alistw orksh opand
see kadvice.
i Yo
uc an obtaininfo rma tiona bout tric kle
cha rgersfro maq ualifi ed speci alistw ork-
sho p. Dri
ving tips Ge
neral notes
Impo rtant safety notes G
WA
RNING
If yo us witch offthe igniti onwhiled rivin g,
sa fety -releva ntfunctio nsareo nlya vailab le
wi th limita tions, ornot atall. Thi scould
af fect, forexa mpl e,the powe rstee ringa nd
the brakeboosti ngeffect. Youw illr eq uire
cons idera blym oree ffort tostee rand bra ke.
The reisar isko fana ccident.
Do not switch offthe igniti onwhiled rivin g. G
WA
RNING
Mob ilec omm unicati ons equipme ntdistra cts
the driver fromt rafficc ond itions. Inaddi-
tio n,the driver couldlose contro lofthe
veh icle. The reisar isko fana ccident. As
adriver ,use mob ilec omm unicati ons
eq uipme ntonl yw hent he veh iclei sa ta
sta nds till.
As avehicleo ccu pant, usem obilec omm uni-
cati ons equipme ntonl yint he designa ted
ar ea ,e .g.t he rea rpasse nge rcomp artment.
Ob ser vethe lega lreq uirem ents forthe country
in wh ich youa redrivin g.Some jurisdi ctio ns
pro hibi tt he driver fromu sing am obilep hone
wh iled rivin gav ehicle.
If yo um akeac allw hile dri vin g,alwa ysuse
ha nds -freem ode.Onl yoperate the telephon e
wh en the traffics itua tio np ermi ts. Ifyo ua re
uns ure, pu llove rtoas afel oc ati on and stop
be for eo perating thetelephon e.
Bea rinm indt hata ta spee do fonly3 0m ph
(a pp roxi mately5 0k m/h ),the vehiclec ove rsa
di sta nce of44 ft(app roxi mately1 4m )per
sec ond .
Dri vesens ibly –s avef uel Ob
ser vethe followi ng tipstos avef uel:
R The tiresshoulda lway sb einfl ate dtothe
reco mme ndedtire pre ssu re.
R Re mov eunne cessary load s.
R Wa rm upthe engineatlowe ngine spee ds.
R Avoi dfrequ ent accelera tiono rbraking .
R Ob ser vethe serviceinte rvalsin the Mainte -
nance Bookletorint he ser viceinte rvaldis-
pl ay .H avea llthe mainte nance workcar ried
in acc ordance with Dai mle rAGr egulati ons.
Fue lcons umption also incr eases when drivin g
in col dw eather, instop -starttra ffica nd inhilly
terr ain.
Dri nki ngand driving G
WA
RNING
Drin king anddrivin ga nd/or takingdru gs
and drivin ga rever ydangerou scomb ina-
tio ns. Even asma llam ount ofalcoh olor
dru gscan affect your ref lexes ,percep tions
and judgme nt.
The possi bility of as erious oreve nfatal
acc ident isgre atlyincr eased when youd rink
or take drugsand drive. Dr
ivi ng tips
137Dr ivi ng andp arki ng
Z

Selec
tingthedrive progra m
Act ive Distanc eAssist DISTRONIC supportsa
sporty driving stylewhen youhave selected
the Sor S+ drive program (Ypage 124).
Acc eleration behindthevehicle infront orto
the setspeed isthen noticeably more
dynamic. Ifyou have selected theCor Edriv-
ing program, thevehicle accelerates more
gently. Incity traffic andstop-st arttraffic,
drive program Cis recommen ded.
Changing lanes
If you want tochange tothe overtakin glane
on multi-lane roads,Active Distanc eAssist
DISTRONIC supportsyouif:
R you aredriving fasterthan45mph
(70 km/h)
R Act ive Distanc eAssist DISTRONIC ismain-
taining thedistance toav ehicle infront
R you switch onthe appropriate turnsignal
R Act ive Distanc eAssist DISTRONIC doesnot
current lydetect adanger ofcollision
If these condition sarefulfilled, yourvehicle is
accelerated. Acceleration willbeinterrupt edif
changing lanestakes toolong orifthe dis-
tance between yourvehicle andthevehicle in
front becomes toosmall.
i When
youchange lanes,Active Distanc e
Assist DISTRONIC monitorsthe left lane on
left-hand- drivevehicles orthe right laneon
right-han d-drivevehicles.
Stopping G
WARNING
If you leave thedriver's seatwhen thevehi-
cle isonly being braked byAct ive Distanc e
Assist DISTRONIC, itcould rollaway :
R ifthere isam alfunction inthe system or
in the voltage supply
R ifAct ive Distanc eAssist DISTRONIC is
deactivated usingthecruise controllever,
for example byavehicle occupant orfrom
outside thevehicle
R ifthe electrical systeminthe engine com-
partment ,the battery orthe fuses are
tampered with R
ifthe battery isdisconnec ted
R ifthe vehicle isaccelerated, e.g.byavehi-
cle occupant
There isar isk ofan accident.
Always deactivate Active Distanc eAssist
DISTRONIC andsecure thevehicle against
rolling awaybefore youleave it.
Further information ondeactivating Active Dis-
tance Assist DISTRONIC (Ypage 150).
If Act ive Distanc eAssist DISTRONIC detects
that thevehicle infront isstopping, itbrakes
your vehicle untilitis stationary.
Once yourvehicle isstationary, itremains sta-
tionary andyoudonot need todepress the
brake.
i Aft
eratime, theelectric parking brake
secures thevehicle andrelieves theservice
brake.
i Depending
onthe specified minimum dis-
tance, yourvehicle willcome toas tandst ill
at as ufficient distance behindthevehicle in
front .The specified minimum distanceisset
using thecont rolonthe cruise controllever.
When Active Distanc eAssist DISTRONIC is
activated, thetransm issionisshifted automati-
cally toposition 005Dif:
R the driver's seatbeltisnot fastened andthe
driver's doorisopen
R the engine isswitched off,unless itis auto-
matically switchedoffbythe ECO start/
stop funct ion.
The electric parking brakeisapplie dautomati-
cally ifAct ive Distanc eAssist DISTRONIC is
active whenthevehicle isstationary and:
R as ystem malfunction occurs
R the power supply isnot sufficient
If am alfunction occurs,thetransm issionmay
also shift toposition 005Dautomatically.
Setting aspeed Keep
inmind thatitmay take abrief moment
until thevehicle hasaccelerated orbraked to
the speed set.
X To
adj ust the setspeed in1m phincre-
ments (1km/h increments): brieflypress
the cruise controllever up0043 tothe pres- 148
Driving
systemsDriving andparking

Disp
laymes sages Poss
iblecauses/co nsequences and 0050 0050
Solu tions 00AC
Coo lantT ooHot Coo
lantT ooHot
Sto pV ehicl eT urn Sto
pV ehicl eT urn
Eng ine Off Eng
ine Off The
coolan tist oo hot .
Aw arning tone also soun ds.
G WAR
NING
Do notd rive when yourengin eiso verhe ated.This cancaus esom e
flui dswhic hmayhav eleak edintot he engin ecom par tmenttoc atch
fir e.
St eam from theo verhe atedenginec an also causeserious burns
whic hcan occur justbyo pen ingtheh ood.
The reisar isko finjury.
X Pull overand stop thev ehicles afely and switchoff thee ngine,
payin gatten tion toroa dand traff icco nd ition s.
X Se cur ethe veh iclea gain strol linga way (Ypage 134).
X Leav ethe veh iclea nd keep asafed istanc efromt heveh icleu ntil
th ee ngineh ascooled down .
X Mak esuret hatthe air supp lyto thee nginer adi ato risn ot
bloc ked, e.g. by snow, slushorice .
X Do notstart thee nginea gain untilth ed isplay mes sage goesout
and thec oolan ttem perat ure gage isbelo wthe Hmar king
(Y page 169). Other wise ,the engin ecouldbe damag ed.
X Pay attention tothec oolan ttem perat ure gage ,observ ing the
warn ingnotes( Ypage 243).
X Ifth et em perat ure increas esagain ,visit aq ualif iedspecialist
wor kshop immediat ely.
Un der norm aloper ating cond ition sand atthec orrect coolan tlev el,
th ec oolan ttem perat ure gage mayriset ot he Hmar king
(Y page 169). 003D
See Operator'sM an‐ See
Operator'sM an‐
ual ual The
battery isno tb ein gcharged.
Aw arning tone also soun ds.
Pos siblecaus esare:
R ad efec tive altern ator
R at ornp oly- V-belt
R am alfunc tion inthee lectron ics
! Do
notd rive any further. Other wise thee nginem ayove rheat.
X Pull overand stop thev ehicles afely and switchoff thee ngine,
payin gatten tion toroa dand traff icco nd ition s.
X Se cur ethe veh iclea gain strol linga way (Ypage 134).
X Con sult aqualif iedspecialistwor kshop . 196
Disp
laymes sage sOn -boar dcomp uter andd ispla ys

Disp
laymes sages Poss
iblecauses/co nsequences and 0050 0050
Solu tions 003D
Sto pV ehicl eS ee Sto
pV ehicl eS ee
Ope rator'sM anual Ope
rator'sM anual The
battery isno longer bein gcharged and thec ondition ofcharg e
is tool ow.
Aw arning tone also soun ds.
X Pull overand stop thev ehicles afely and switchoff thee ngine,
payin gatten tion toroa dand traff icco nd ition s.
X Se cur ethe veh iclea gain strol linga way (Ypage 134).
X Obs ervethe instruct ionsint he 003D SeeOperator'sM anual See
Operator'sM anual
disp laymes sage .
X Con sult aqualif iedspecialistwor kshop . 00B2
Che ckEngine Oil Che
ckEngine Oil
At NextR efuel ing At
NextR efuel ing The
engin eo illev elhas dropped tothem inimum level.
Aw arning tone also soun ds.
! Av
oid longer journ eys when there isins ufficien te ngineo il.You
co uld other wise damag ethe engin e.
X Chec kthe oillevelwhen next ref uelin g,at thel atest
(Y page 242).
X Ifne cessar y,add engin eo il(Y page 242).
X Hav ethe engin echecked ataq ualif iedspecialistwor kshop ifyou
ne ed toadd engin eo ilmor eoften than usual.
In for mat iononappr ovedengineo ilscan beobt ained from aquali-
fie ds pecial istwor kshop oron theI nterne ta th ttp: //
bev o.mer cedes -ben z.co m. 00B2
Che ckEngine Oil Che
ckEngine Oil
Lev el(Add1q uart) Lev
el(Add1q uart) Mer
cedes -AMG SLC4 3:
The engin eo illev elistool ow.
! Av
oid longer journ eys when there isins ufficien te ngineo il.You
co uld other wise damag ethe engin e.
X Chec kthe oillevelwhen next ref uelin g,at thel atest
(Y page 242).
X Ifne cessar y,add engin eo il(Y page 242).
X Hav ethe engin echecked ataq ualif iedspecialistwor kshop ifyou
ne ed toadd engin eo ilmor eoften than usual.
In for mat iononappr ovedengineo ilscan beobt ained from aquali-
fie ds pecial istwor kshop oron theI nterne ta th ttp: //
bev o.mer cedes -ben z.co m. 00B2
Eng ine OilLevel Eng
ine OilLevel
Low StopV ehicl e Low
StopV ehicl e
Tur nE ngine Off Tur
nE ngine Off Mer
cedes -AMG SLC4 3:
The engin eo illev elistool ow.
The reisar isko fengined amag e.
X Pull overand stop thev ehicles afely and switchoff thee ngine,
payin gatten tion toroa dand traff icco nd ition s.
X Se cur ethe veh iclea gain strol linga way (Ypage 134).
X Chec kthe engin eo illev el(Y page 242).
X Ifne cessar y,add engin eo il(Y page 242). Disp
laymes sage s
197On -boar dcomp uter andd ispla ys Z

Disp
laymes sages Poss
iblecauses/co nsequences and 0050 0050
Solu tions Ser
viceR equir ed Ser
viceR equir ed
Do Not ShiftGea rs Do
Not ShiftGea rs
Vis itDealer Vis
itDealer You
cannotc hang et he trans mis sion position due toam alfunc tion .
Aw arning tone also soun ds.
If trans mis sion position 005Bissele cted:
X Dr ive toaq ualif iedspecialistwor kshop without shifting thet rans -
mis sion from position 005B.
If pos ition 005E, 005Cor005D issele cted:
X Not ifyaq ualif iedspecialistwor kshop orbre akd own service. Rev
ersing NotPos‐ Rev
ersing NotPos‐
sib leService sib
leService
Req uired Req
uired You
cannolonger shiftto trans mis sion position 005Edue toam al-
fun ction .
Tran smission pos ition s005D, 005Cor005B continu etob eavail able.
Aw arning tone also soun ds.
X Vis itaq ualif iedspecialistwor kshop . Tra
nsmission Mal‐ Tra
nsmission Mal‐
fun ctionStop fun
ctionStop Am
alfunc tion has occur red inthem echan ical trans mis sion compo -
ne nts.
Aw arning tone also soun ds.The trans mis sion shiftsa uto mat ically
to pos ition 005C.
X Pull overand stop thev ehicles afely assoo naspossibl e,payin g
att ention toroa dand traff icco nd ition s.
X Sh ift thet rans mis sion topos ition 005D.
X Se cur ethe veh iclea gain strol linga way (Ypage 134).
X Not ifyaq ualif iedspecialistwor kshop orbre akd own service. Sto
pV ehicl eL eave Sto
pV ehicl eL eave
Eng ine Running Eng
ine Running
Wai tT ransm iss ion Wai
tT ransm iss ion
Coo ling Coo
ling The
trans mis sion hasoverheated.Pullin gaway canbetempo rarily
imp aire dornotpos sible.
X Pull overand stop thev ehicles afely assoo naspossibl e,payin g
att ention toroa dand traff icco nd ition s.Do notc ontin ue drivin g
und erany circum stanc es.
X Wait untilth ed isplay mes sage disap pearsbefore pullin gaway. Aux
iliary Batter y Aux
iliary Batter y
Mal function Mal
function The
auxiliary battery for thea uto mat ictrans mis sion isno longer
bein gcharged.
X Vis itaq ualif iedspecialistwor kshop atthen exto ppo rtuni ty.
X Un tilt he n, always shiftthet rans mis sion topos ition 005Dbefore
you switchoff thee ngine.
X Be for eleav ing thev ehicle, apply thee lectric park ingbrak e. 0084 The
trunk lidisopen .
X Clos ethe trunk lid. Disp
laymes sage s
205On -boar dcomp uter andd ispla ys Z