2020 MERCEDES-BENZ SLC ROADSTER engine

With
KEYLESS-GO :if you then open thedriv-
er's orfront-passenge rdoor, theautomatic
transmissi onshifts to005D automatical ly.
If you want theautomatic transmissi onto
remai ninn eutral 005C,e.g.when havingthe
vehicl ecleaned inan automatic carwas hwith
at owing system:
X Vehic leswith KEYLESS-GO :remove the
Start/Stop buttonfromtheignitio nlock.
X Insert theSmartKey intotheignitio nlock.
X All vehi cles:swi tch the ignitio non.
X Depress thebrake pedaland keep it
depre ssed.
X Shift toneutral 005C.
X Rel ease thebrake pedal.
X Rel ease theelectric parkingbrake.
X Switch offthe ignitio nand leavethe Smart-
Key inthe ignitio nlock.
Eng agin gdrive position D X
When thevehicl eiss tationa ry,depre ssthe
brake pedal.
X Push thesele ctor leverback past thefirst
point ofresis tance. Transmissio
npositi ons 0045 Park
positi on
This prevents thevehicl efrom roll-
ing awa ywhen stoppe d.
Only shiftthetransmissi oninto
posi tion 0045 (Ypag e125) when
the vehicl eiss tationa ry.The park-
ing lock shou ldnot beused asa
brake whenparking.Alwa ysapp ly
the electronic parkingbrake inadd i-
tion tothe parki nglock inorder to
secure thevehicl e.
If the SmartKey isremoved fromthe
ignitio nlock, thetransmissi onis
locked.
The automatic transmissi onshifts
to 0045 automatical ly:
R when theSmartKey isremoved
from theignitio nlock
R when theengine isswi tched off
with thetransmissi oninposi tion
0046 or003A andone ofthe
doors isopened
In the event ofam alfunction ofthe
vehicl e'selectronics, thetransmis-
sion may lockinposi tion 0045.
Have thevehicl eelectronics
checked immediatelyataq ualified
speci alist worksho p. 0046 Reverse
gear
Only shiftthetransmissi oninto
posi tion 0046 when thevehicl eis
stationa ry. Automatic
transmissio n
127Drivi ngand parking Z

0044 Neut
ral
Do not shiftthe transmi ssion to
0044 whiled riving .The automa tic
tra nsmi ssion cou ldothe rwiseb e
da ma ged.
No powe rist ransmi ttedfromt he
eng inetothe drive wheels.
Re leas ing the brakepedalw illa llow
yo ut om ovet he veh iclef reely, e.g .
to push itor tow it.
If ESP ®
is de acti vated orfaulty: shift
the transmi ssion topositio n0044 if
the vehiclei sind angero fskidd ing ,
e.g .onicy roa ds.
! Co
asting inneu tral005C may
cau sedama getothe drive train. 003A Dri
ve
The automa tictransmi ssion
cha nge sgeara utoma tically. All
for wa rdgearsa reavailabl e. Dri
ving tips
Ch ang ingg ear The
automa tictransmi ssion shifts thro ught he
ind ividu alge arsa utoma ticallyw henitisi n
tra nsmi ssion positio n005B.T hisa utoma ticgear
shi fting behavio risd eterm inedb y:
R the selecte ddrive pro gram
R the positio no fthe acce lera tor pedal
R the roadspeed
Ac celerator pedalposition Yo
ur sty leof dri ving influences howtheauto-
ma tic transmi ssion shifts gear:
R little thro ttle:early up shi fts
R mor ethro ttle :lat eu pshifts Ki
ck dow n Use
kickd ownfor ma xim um accelera tion.
X Dep ressthe acc elera tor pedalbeyond the
pre ssu repoint.
The automa tictransmi ssion shifts toalow er
ge ar dependi ng on the enginespeed.
X Eas eoffthe accelera tor pedalonce the
de sired speedisrea che d.
The automa tictransmi ssion shifts back up. Dri
veprog rams
Dri veprog ramC(Comfo rt) In
city traffica nd stop -starttra ffic, dri ve pro -
gra mCis reco mme nded.
Driv eprogra mCis cha racteri zedbythe follow-
ing :
R the vehicled elive rscomf ortable, eco nomi cal
ha ndl ing characteri stics.
R the vehiclep ulls aw ay mor egently in
for wa rdand revers egears,u nless theaccel-
era tor pedalisd epresse dfully.
R the vehicleh asimp roveddriving stability,
for exa mpl eonslipper yroads urfaces .
R op tima lfue lcons umption resulting fromt he
au toma tictransmi ssion shifting upsoo ner.
The vehiclei sd riven inthe lowe ngine spee d
ra nge and thewheelsarel esslikel yt os pin.
R thes uspe nsi on exh ibits comf ortabled amp-
ing setti ngs(ada pti ve dampi ngsystem only
in veh icles with AMG RIDE CONTR OLsports
su spe nsion) .
R the stee ring exhibits comf ortables tee ring
cha racteri stics.
Dri veprog ramS(Sport) Driv
eprogra mSis cha racteri zedbythe follow-
ing :
R the vehiclee xhibits spo rtydriving character-
is tics .
R the vehiclep ulls aw ay infirst gear.
R the automa tictransmi ssion shifts uplater.
The fuel cons umption possi blyb eing highe r
as aresulto fthe later automa tictransmi s-
si on shiftpo ints . 12
8 Au
tomati ctrans missionDr ivi ng andp arki ng

R
the susp ens ione xhibits firmd amping set-
ting s(vehicle sw itha daptive dampi ngsys-
tem orAMG sports susp ens ion).
R the steering exh ibits sporty steering cha rac-
teri stics.
Dri veprog ramS+(Sport Plus) Dri
vepro gramS+ ischa racteri zedbythe fol-
lo wi ng:
R the vehiclee xhibits partic ular ly sp orty driv-
ing characteri stics.
R the vehiclep ulls aw ay infirst gear.
R the automa tictransmi ssion shifts uplater.
The fuel cons umption possi blyb eing highe r
as aresulto fthe later automa tictransmi s-
si on shiftpo ints .
R the susp ens ione xhibits partic ular ly firm
da mpi ngsetting s(vehicle sw itha daptive
da mpi ngsyste mo rAMG sports susp en-
si on) .
R the steering exh ibits sporty steering cha rac-
teri stics.
R the ECO start/sto pfunctio nisn otavailabl e.
Dri veprog ramI(Individual ) In
dri ve pro gramIthe followi ng pro pertie sof
the drive pro gramc anbe selected :
R the drive (engi ne and transmi ssion manag e-
ment)
R the susp ens ion( vehicle sw itha daptive
da mpi ngsyste mo rAMG sports susp ens ion)
R the steering
R the availabi lity of the ECO start/sto pfunc-
tio n
Info rma tiona bout confi gurin gd rive pro gramI
wi th the multimed iasyste mc anbe fou ndin
the DigitalO perator' sM anual.
Dri veprog ramE(Econ om y) Dri
vepro gramEis cha racteri zedbythe follow-
ing :
R the vehiclee xhibits partic ular ly eco nomi cal
ha ndl ing characteri stics.
R the vehiclep ulls aw ay mor egently in
for wa rdand revers egears,u nles st he acc el-
era tor pedalisd epresse dfully.
R the vehicleh asimpro ved drivin gs tability,
for exa mpl eonslipper yroads urfaces . R
op timal fuel cons umption resulting fromt he
au toma tictransmi ssion shiftin gupsooner.
Th ev ehiclei sd riven inthe lowe ngine spee d
ra nge and thewheelsarel esslikel yt os pin.
R the susp ens ione xhibits comf ortabled amp-
ing setting s(vehicle sw itha daptive dampi ng
sy ste mo rAMG sports susp ens ion).
R du rin gd ecelera tion,the engineisdisco n-
necte dfromt hedrive train. Thev ehicleu ses
kine ticene rgy and cons umesless fuel
(co asting mod e).
R the steering exh ibits comf ortables teeri ng
cha racteris tics. Man
ualgearshift ing
Ge neral notes Yo
uc an cha nge gear yourse lfus ing the steer-
ing wheelp ad dles hifter s.Th et ransmi ssion
mu stbe inpo sitio n005B todo this.
Dep endingonwhich steering wheelp ad dle
shi fter ispu lled ,the automa tictransmi ssion
im med iatel ys hifts into thenext gear down or
up ,ifp ermi tted .
To usem anualshiftin g,youh avet wo optio ns:
R temp orarysetting
R pe rma nent setting
If yo ua ctivate ma nua lgea rshiftin g,the multi-
fu nctio ndispl ay willsho wthe cur rent gear
ins tea doftransmi ssion positio n005B.
If ma nua lgea rshiftin gisd eacti vated ,the gears
wi llbe selected automa tically.
Tempo rarysettin g X
To activ ate :shi ftthe selector lever to005B.
X Pu llste ering wheelp ad dles hifter 0043or0044. Au
tomati ctrans mission
129Dr ivi ng andp arki ng Z

The
temporary settingisactive foracertain
amount oftime. Under certaincondit ions,the
minimum amountoftime isexten ded,e.g.in
the case oflateral acceleration ,during overrun
mode orwhen driving onsteep terrain.
X To deactivat e:pull steerin gwheel paddle
shifter 0044and hold itin place.
or X Use thelever toswitch thetrans mission
position.
or X Use theDYNA MICSELECT button tochange
the drive program.
Perma nentsetting X
To activat e:shift theselector leverto005B.
X Press button 0043.
X To deactivat e:press button 0043.
Shifting gears All
vehicles (exceptforMercedes-AMG
SLC 43) X
To shift up:pull steerin gwheel paddle
shifter 0044.
The automatic transmission shiftsuptothe
next gear.
If the maximum enginespeedinthe cur-
rent lyengaged gearisreached andyoucon-
tinue toaccelerate, theautomatic transmis-
sion automatically shiftsupinorder topre-
vent engine damage.
X To shift down: pullsteerin gwheel paddle
shifter 0043.
The automatic transmission shiftsdownto
the next gear.
Automat icdown shiftin goccurs whencoast-
ing.
If the engine weretoexceed themaximum
engine speedwhenshiftin gdown, theauto-
matic transmission protectsagainst engine
damage bynot shiftin gdown.
Mercedes-AMG SLC43
! If
manual gearshifting ispermanent lyacti-
vated, theautomatic transmission doesnot
shift upautomatically evenwhen theengine
limiting speedforthe current gearis
reached. Whentheengine limiting speedis
reached, thefuel supply iscut toprevent
the engine fromoverrevv ing.Always make
sure thattheengine speeddoesnotreach
the red area ofthe tachomet er.There isoth-
erwise arisk ofengine damage. X
To shift up:pull steerin gwheel paddle
shifter 0044.
The automatic transmission shiftsuptothe
next gear.
X To shift down: pullsteerin gwheel paddle
shifter 0043.
The automatic transmission shiftsdownto
the next gear. 130
Automa
tictransmissionDriving andparking

Auto
matic down shifting occurswh en coa st-
ing .
If the enginewereto exce edthe maximu m
eng inespeedwhen shifting down, theauto-
ma tic trans mission pro tects against engine
da ma gebynot shifting down.
Shi ftrec omme ndation Al
lv eh icle s( except for Merc edes-AMG
SL C4 3) The
gearshiftreco mme ndations assist youi n
ad op ting aneco nomi caldriving style.T he rec-
omme ndedgeariss hown inthe multifu nctio n
di spl ay.
X Shi ftto reco mme ndedgear0044 acco rding to
gea rshiftreco mme ndation0043 when sho wn
in the multifu nctio ndispl ay ofthe instru-
ment cluster .
Merc edes-AMG SLC4 3 The
gearshi ftreco mme ndations assist youi n
ad op ting aneco nomi caldriving style.T he rec-
omm endedgear issho wninthe multifu nctio n
di spl ay.
X Shi ftto reco mme ndedgear0044 acco rding to
gea rshiftreco mme ndation0043 when sho wn
in the multifu nctio ndispl ay ofthe instru-
ment cluster .
Ki ck dow n X
For maximu maccelera tio n,de pre ssthe
acce lera tor pedalbeyond thepressu re
po int.
The automa tictrans mission shifts toalow er
ge ar dependi ng on the enginespeed.
X Shi ftba ck up once thedesired speedis
rea che d.
Dur ing kickd own,youc anno tshift gea rsusing
the stee ring wheelp ad dles hifters .
If yo ua pplyfullthro ttle,the automa tictrans -
mis sion shifts uptothe next gearwhent he
ma ximu mengine speedisrea che d.Thi sp re-
vents theenginefrom overrevving. Au
tomati ctransmi ssion
131Dr ivi ng andp arki ng Z

Problems
withthetransmission Problem
Possible
causes/co nsequences and0050 0050
Solutions The
transm issionhas
problems shiftinggear. The
transm issionislosing oil.
X Have thetransm issioncheckedataq uali fied specialist workshop
immediately. The
acceleration ability
is deteriorating.
The transm issionno
longer changes gear. The
transm issionisin emergency mode.
It is only partly possible toengage thegears, orthe transm issionis
in position 005C.
X Stop thevehicle.
X Shift thetransm issiontoposition 005D.
X Switch offthe engine.
X Wait atleast tenseconds beforerestartingthe engine.
X Shift thetransm issiontoposition 005Bor005E.
X Have thetransm issioncheckedataq uali fied specialist workshop
immediately. Refueling
Import
antsafety notes G
WARNING
Fuel ishighly flammable. Riskoffire and
explosion byimproper handlingoffuel.
You must avoid fire,open flames, smoking
and creating sparks.Switchoffthe ignition
before refueling and,ifpresent, switchoff
the auxilia ryheating. G
WARNING
Fuels aretoxic andharmful tohealth. There
is ar isk ofinjury.
You must avoid fuelscoming intocontact
with skin, eyesandclothes orbeing swal-
lowed.
Do not inhale thefuel vapors. Keepchildren
away fromfuels.
Keep doors andwindows closedduringthe
refueling process. If
you orothers comeintocontactwith fuel,
observe thefollowing points:
R Immediately rinsethefuel offyour skin
with soap andwater.
R Ifyou getfuel into your eyes, immediately
rinse youreyes throughly withclean
water. Seekmedical attentionimmedi-
ately.
R Seek medical attentionimmediately iffuel
has been swallow ed.Donot induce vomit-
ing.
R Immediately changeoutofclothing which
has come intocontactwith fuel. G
WARNING
Elect rostatic charging canlead tothe crea-
tion ofsparks andignite fuelvapor. Thereis
ar isk offire and explosion.
Touch themetallic bodyofthe vehicle
before youopen thefuel filler caporhandle
the pump nozzle.Any possible electrostatic
charge present willinthis way bedepleted.
Do not getinto thevehicle againduring the
refueling process.Otherwise, electrostatic
charge couldbuildupagain. 132
RefuelingDriving
andparking

Do
not getinto thevehiclea gain du rin gthe
ref ueling pro ces s.Othe rwise, electro static
cha rge couldbu ildu pagain.
! Do
not used iese ltor efue lveh icles with a
ga sol ine eng ine.Don otsw itch onthe igni-
tio nifyou acc identa llyr efue lw itht he wrong
fu el.O the rwise, the fuel willente rthe fuel
sy stem .Even sma llam ounts ofthe wrong
fu el cou ldres ulti nd amaget ot he fuel sys-
tem andtheengine.Notifyaq ualifi ed spe-
cia list wo rksh opand have the fuel tank and
fu el lines drainedc omp letel y.
! Ove
rfilling the fuel tank couldda ma gethe
fu el system .
! Ta
ke car enottospilla ny fuel on painte d
su rfa ces .You cou ldothe rwised amaget he
pa intw ork.
! Use
afilter when adding fuel fro maf uel
can. Thefuel lines and/or thefuel inje ctio n
sy stem couldothe rwiseb eb locke dbyparti-
cle sfromt hefuel can.
If yo uo verfillthe fuel tank, fuel cou ldspray
ou tw hent he fuel pu mp nozzl eisr em ove d.
For furthe rinfo rma tiono nfueland fuel qu ality
(Y page 300 ). Ref
ueling
Ge neral info rmatio n The
fuel fillerf lapi su nlocke dorloc ked auto-
ma tica llyw heny ou unlock orlock the vehicle
wi th the Sma rtKeyorusing KEYL ESS-G O.
The positio no fthe fuel fillerc ap isdisp laye d
00B6 inthe instrument cluster .The arrow next
to the filling pump indicates the side ofthe
veh icle. On
the insideo fthe fuel fillerc ap,you willfind
info rma tiono nthe reco mme ndedfuel.
Ope ning the fuelfille rf lap 0043
Toopen the fuel fillerf lap
0044 Toinsert the fuel fillerc ap
0087 Tire pre ssu retab le
0085 Instr uctionlabe lfor fuel typ etob erefu-
el ed
X Swi tch the engineoff.
X Re mov ethe Sma rtKeyfromt heigniti on
lo ck.
X Pre ssthe fuel fillerf lapi nt he directi onof
ar row 0043.
The fuel fillerf laps wing su p.
X Tu rn the fuel fillerc ap cou nter-c lockwi se
and remove it.
X Inse rtthe fuel fillerc ap into theholder
bra cket onthe insideo ffue lfille rf lap 0044.
X Co mpl etelyins ert the fillern eck ofthe fuel
pu mp nozzl einto thetank, hookinp lace
and refuel.
X Onl yfillt he tank untilthe pump nozzl e
sw itch esoff.
i Do
not adda nymor efuelafter the pump
stop sfilling for the first time .Othe rwise, fuel
ma ylea ko ut.
Cl os ingt he fue lfille rf lap X
Re place thecap onthe fillern eck and turn
clo ckwi seunti lite ngages audibly.
X Close thefuel fillerf lap.
i Cl
ose thefuel fillerf lapb efor el oc king the
veh icle.
i If
yo ua redrivin gw itht he fuel fillerc ap
op en, the 00B6 reservefuelw arning lamp
fla she s.The 00B9 Check Engi newarning Ref
ueling
133Dr ivi ng andp arki ng Z

To
ensure thatthevehicle issecured against
rolling awayunintention ally:
R the electric parking brakemustbeapplied.
R the trans mission mustbeinposition 005D.
R the Smart Keymust beremoved fromthe
ignition lock.
R the front wheels mustbeturned towards the
curb onsteep uphillordownhill gradients. Switching
offthe engine G
WARNIN
G
The automatic transmission switches toneu-
tral position Nwhen youswitch offthe
engine. Thevehicle mayrollaway .There isa
risk ofan accident .
Aft erswitching offthe engine, alwaysswitch
to parking position P.Prevent theparked
vehicle fromrolling awaybyapplyi ngthe
parking brake.
X Apply theelectric parking brake.
X Shift thetrans mission toposition 005D
(Y page 126).
X With theSmar tKey:turn theSmart Keyto
position 0092inthe ignition lockandremove
it.
The immobilizer isactivated.
X With KEYLESS-GO: presstheKEYLE SS-GO
Start /Stopbutton (Ypage 118).
The engine stopsandallthe indicator lamps
in the instr ument cluster goout.
If the driver's doorisclosed, thisisthe
same asSmart Keyposition 0047.Ifthe driv-
er's door isopen, thisisthe same asSmart -
Key position 0092(Ypage 118).
The engine canbeswitched offwhile thevehi-
cle isin motion bypressing andholding the
Start /Stopbutton forabout threeseconds.
This funct ionoperates independent lyof the
ECO start/stopautomatic engineswitch-off
funct ion. Elec
tric par king brake
General notes G
WARNIN
G
If children areleft unsupervised inthe vehi-
cle, they could:
R open doors, thereby endangerin gother
persons orroad users
R get out and bestruck byoncom ingtraff ic
R operate thevehicle's equipment
Addition ally,children couldsetthe vehicle in
motion if,for example, they:
R release theparking brake
R shift theautomatic transmission outof
park position 005Dorshift themanual
trans mission toneutral
R start theengine
There isar isk ofan accident andinjury.
When leaving thevehicle, alwaystake the
Smart Keywith youand lock thevehicle. This
also applies forthe digital vehicle keyifthe
"Digital Vehicle Key"functionisactivated via
Mercedes meconn ect.
Always keeptheSmart Keyoutofreach of
children. Thisalso applies forthe Digital
Vehicle Keyifthe "Digital Vehicle Key"func-
tion isactivated viaMercedes meconn ect.
The funct ionofthe electric parking brakeis
dependent onthe on-board voltage.Ifthe on-
board voltage islow orthere isam alfunct ion
in the system, itmay notbepossible toapply
the released parkingbrake.
X Ifthis isthe case, onlypark thevehicle on
level ground andsecure itto prevent itroll-
ing away .
X Shift theautomatic transmission toposition
005D.
It may notbepossible torelease anapplied
parking brakeifthe on-board voltageislow or
there isam alfunct ioninthe system. Contact a
qualified specialist workshop.
The electric parking brakeperforms afunct ion
test atregular intervalswhile theengine is
switched off.The sounds thatcanbeheard
while thisisoccurrin garenormal. Par
king
135Driving andparking Z