2020 MERCEDES-BENZ SLC ROADSTER keyless

ignit
eifinc ontac twith the exhaus tsyst em
or part softhe engin ethat heat up.There is
ar isk offire.
Carry outregular checkstomake surethat
the reare noflamm ableforeign mate rialsin
the engin ecom part men torint he exhaus t
syst em.
Durin gacoldstar t,the engin eruns athigher
speeds toenable thecatalytic convert erto
reach itsoperat ingtem perat ure.Thesound of
the engin emaychan gedurin gthis time.
Autom atic transm ission X
Depr essthebrak epedal andkeep it
depres sed.
X Shif tthe transm ission toposit ion005D.
Tran smiss ionposit iondisplay 005Disshown
in the multif unction display.
i You
canstartthe engin eint ransm ission
posit ion005Dand 005C.
Sta rting procedur ewiththeS ma rtKey To
star tthe engin eusing theSmar tKey inst ead
of KE YLE SS-GO, pulltheStart/ Stop butt onout
of the ignit ionlock .
X Turn theSmar tKey toposit ion0049
(Y page 118)inthe ignit ionlock andrelease
it as soon asthe engin eisr unn ing.
Using KEYLESS-GO tosta rtthee ngine The
Start/ Stop butt oncan beused tostar tthe
vehic lemanually withoutinse rting the Smar t-
Key intot he ignit ionlock .The Start/ Stop but-
ton must beinse rted inthe ignit ionlock and
the Smar tKey must beinthe vehic le.This
mode forstar tingt he engin eoperat esinde-
pende ntly of the ECO start/sto pautom atic
engin estartfunc tion .
X Depr essthebrak epedal andkeep it
depres sed.
X Press theStart/ Stop butt ononc e
(Y page 118).
The engin estarts. Pulling
away
Gener alnotes G
WARN
ING
If the engin espeed isabove theidling speed
and youengag etransm ission position003A
or 0046,t hevehic lecould pullaway sud-
denly. Thereisar isk ofan acc ident .
When engagingtransm ission position003A
or 0046,a lwaysfirmlydepres sthe brak e
pedal anddonot simult aneously accelerat e.
! Change
gearingood timeand avoid spin-
nin gthe wheels. Youcould otherwise dam-
age thevehic le.
Depr esstheaccelerat orcaref ullywhen pulling
away.
The vehic lelock scentrally onceyou have
pulled away.Thelockingknobs inthe doors
drop down.
You canopen thedoors fromt heinsid eatany
tim e.
You canalso deact ivatethe autom aticlocking
feat ure (Ypage 179).
It is only possible toshift thetransm ission
fro mp osition 005Dtothe desired positionifyou
depres sthe brak epedal. Onlythenist he shift
lock released .
i Upshif
tstak eplace athigher engine
speeds afterac old star t.This helps thecat-
alytic convert erto reach itsoperat ingtem -
perat uremore quickly.
Inf ormat iononthe autom aticrelease ofthe
elect ricpark ingbrak e(Ypage 136).
Hill startassist Hill
star tassist helps youwhen pulling away
for ward orinreve rseonanuphill gradien t.It
holds thevehic lefor ashor ttim ea fter you
have removedyour footfromt hebrak epedal.
This gives youenoug htimet om ove your foot
fro mt hebrak epedal tothe accelerat orpedal
and todepres sitb efor ethe vehic lebegin sto
roll. 120
DrivingDriving
andparking

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

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

Disp
laymes sages Poss
iblecauses/co nsequences and 0050 0050
Solu tions 007A
0025
00E5 Ino perativeSee Ino
perativeSee
Ope rator'sM anual Ope
rator'sM anual EB
D( elec tron icbrak eforce dist ribution),AB Sa ndESP®
are mal-
fun ction ing.
Ot her drivin gs yst ems anddrivin gs afet ys yst ems mayalsomalfunc-
ti on .
In addit ion,the 00E5 ,00BB and0025 warninglamp sligh tupint he
ins trumen tclus tera nd aw arning tone soun ds.
G WAR
NING
The brak esyst em continu estofun ction norm ally, butwithout the
fun ction slist ed abov e.The fron ta nd rear whee lsco uld there fore
loc kify ou per formaf ullbrak eapplic ation,for exampl e.
The steer abilit yand brak ingcharac teris tics may besev erelyaff ec-
te d. The brak ingdist anceina ne me rge ncyb rak ing situati oncan
inc reas e.
If ES P®
is no to per ational, ESP®
is unab leto stabiliz ethe veh icle.
The reisan increas edrisko fskiddin gand anacc iden t.
X Dr ive oncar eful ly.
X Vis itaq ualif iedspecialistwor kshop immediat ely. 0049
(USA
on ly) 0024 (Canada
on ly)
Tur nO ntheIgn i‐ Tur
nO ntheIgn i‐
tio nt oReleas e tio
nt oReleas e
the ParkingB rake the
ParkingB rake The
red0049 (USAonly) or 0024 (Canadaonly) ind icat orlamp lights
up.
You attemp tedt or elease thee lectric park ingbrak ewhile thei gn i-
ti on was switched off.
X Sm artKey :tur nthe Sm artKey topos ition 0047inthei gn ition lock.
X KEYLESS -GO: swit chon thei gn ition . 0049
(USA
on ly) 0024 (Canada
on ly)
Ple ase Release Ple
ase Release
Par kingB rake Par
kingB rake The
red0049 (USAonly) or 0024 (Canadaonly) ind icat orlamp
flas hes and awarning tone soun ds.Acondition for auto matic
rel ease ofthee lectric park ingbrak eisn otfulf illed (Ypage 135).
You aredrivin gw itht he elec tric park ingbrak eapplie d.
X Releas ethe elec tric park ingbrak emanually. The
red0049 (USAonly) or 0024 (Canadaonly) ind icat orlamp
flas hes and awarning tone soun ds.
You areusin gthe elec tric park ingbrak efor eme rgencyb rak ing
(Y page 135). 0049
(USA
on ly) 0024 (Canada
on ly)
Par kingB rake See Par
kingB rake See
Ope rator'sM anual Ope
rator'sM anual The
yellow 0024warninglamp lightsup.
The electric park ingbrak eism alfunc tion ing .
To apply :
X Swi tcht he ignition off.
X Pre ssthee lectric park ingbrak ehandle foratleast tens econ ds.
X Sh ift thet rans mis sion topos ition 005D.
X Con sult aqualif iedspecialistwor kshop . 186
Disp
laymes sage sOn -boar dcomp uter andd ispla ys

If
you need todo any work inside theengine
compartment:
R switch offthe ignition
R never reach intothearea where thereisa
risk ofdanger frommoving components,
such asthe fanrotation area
R remove jewelryandwatches
R keep items ofclothing andhair, forexam-
ple, awayfrom moving parts G
WARNING
The cooling systemispressu rized,particu-
larl yw hen themotor iswarm. Ifyou open
the cap, youcould bescalde difh ot coolant
spray sout. There isar isk ofinjury.
Let the engine cooldown before youopen
the cap. Wear protective glovesandprotec-
tive eyew earwhen opening. Openthecap
slow lyto relea sepressu re. Example
X Park thevehicle onalevel surface.
Only check thecoolant levelwhen thevehi-
cle ison alevel surface andtheengine has
cooled down.
X Turn theSmartKey topositio n0048 inthe igni-
tion lock (Ypage 118).
On vehicle swithKEYLESS- GO,press the
Start/St opbutton twice(Ypage 118).
X Check thecoolant temperature gageinthe
multifu nctiondisplay.
The coolant temperature mustbebelow
158 ‡(70 †).
X Turn theSmartKey topositio n0092
(Y page 118)inthe ignition lock. X
Slowl yturn cap 0043half aturn counter-clock-
wise toallow excess pressureto escape .
X Turn cap0043further <004600520058005100570048005500100046004F00520046004E005A004C0056
0048[ and
remove it.
If the coolant isat the level ofmarker bar
0087 inthe fillerneck when cold,there is
enough coolant incoolant expansion
tank 0044.
If the coolant levelisappro ximately 0.6in
(1.5 cm)above marker bar0087inthe filler
neck when warm, thereisenough coolant in
expansion tank0044.
X Ifnecessary ,add coolant thathasbeen tes-
ted and appro vedbyMercedes-Benz.
X Repl acecap 0043and turn itclockwise asfar
as itwil lgo.
Further information oncoolant (Ypage 303).
Windshie ldwashe rsystem G
WARNING
Certai ncomponents 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 follow ing. G
WARNING
If you open thehood when thedrive system
has overhea tedorduri ngafire inthe engine
compartment, youcould come intocontact
with hotgases orother escapi ngopera ting
flui ds. There isar isk ofburns.
Let the overhea tedcomponents cooldown
before opening thehood. Inthe event ofa
fire inthe engine compartment, keepthe
hood closed andcallthefire service. G
WARNING
Windshi eldwash erconcentrate ishighl y
flamma ble.Ifwindshi eldwash erconcentrate
gets onto hotcomponents ofthe engine or
the exhau stsystem, itcan ignite. Thereisa
risk offire and injury. 244
Eng
inecompar tmentMaintenanc eand care

Clean
thec ontac tsurf aces ofthew heel and
th eb rak edisc thoro ughly everytim eaw heel
is rot ate d.Chec kthe tirep ressur eand,ifn ec-
ess ary, restartthe tirep ressur eloss warn ing
syst emorthet irep ressur emonito r. Direct
ionofrot ation
Tire swithas pecifiedd irection ofrot atio nhave
addit ionalben efits,e.g .ift he re isar isko f
hydr oplan ing.Thes eadvan tagescan onlybe
gain edifth et ires are install ed correspo nding
to thed irection ofrot atio n.
An arrow onthes idew allofthet irei nd icat es
its correct dire ction ofrot atio n. St
ori ng wheels
St ore wheel sthata re notb ein gu sed inac ool,
dry and preferably dark place.Pro tect thet ires
fr om oil,grease, gaso linea nd diese l. Mou
nting awheel
Pr epa ringthe vehi cle X
Stop thev ehicle onsolid ,non -slipp ery and
leve lground.
X Ap ply thee lectric park ingbrak emanually.
X Bring thef ront wheel sintot he straigh t-
ahead position.
X Sh ift thet rans mis sion toposi tion005D.
X Swit choff thee ngine.
X Veh icles withoutKEYLESS- GO:remove
th eS martKey from thei gn ition lock.
X Veh icles withKEYLESS- GO:open thed riv-
er' sd oor .
The vehicle elec tron ics nowh ave status 0.
This isthes ame astheS martKey having
been removed.
X Veh icles withKEYLESS- GO:remove the
St art /S topb utto nf romt heignition lock
(Y page 118).
X Ifinc luded inthev ehicle equipm ent,rem ove
th et ire- ch ang etoolkitfrom thev ehicle .
X Saf eguar dthe veh icle again stroll ing away.
i Due
todiff ere nces inveh icle equipm ent,
no ta llveh iclesareequipp edwithat ire-
ch ang etoolkit.F or inform ationonw hich to
ols are required toper formaw heel
ch ang eonyour vehicle,con sul tana uth or-
ize dM erced es-Ben zCenter.
Nec essary tire-ch ang ingtools can include,
for example :
R Jack
R Whee lcho ck
R Lug wren ch
Secur ingthev ehi cle toprevent itfrom
rol ling away If
your vehicle isequipp edwithaw heelchoc k,
it can befoun dint he tire-ch ang etoolkit
(Y page 253).
The foldingwheel choc kisa na ddit ionalsafe ty
meas uretopre ven tthe veh icle from rolling
away, forexample whenchang ingawheel .
X Fol db othp lates upward s0043.
X Fol do utlower plate0044.
X Guide thel ugs onthel ower platefully into
th eo pen ingsinb ase plate0087. X
Plac echockso rother suit able items unde r
th ef ront and rear ofthew heel that isdiago-
nall yoppo sitet he wheel youwish to
ch ang e. 290
Cha
nging awheelWh eels andtires