2020 MERCEDES-BENZ SLC ROADSTER engine

Ext
erio rlight ing Gener
alnot es
For reas onso fsafe ty,Mer cedes-Ben zrecom-
men dsthat you drivewiththel ight sswit ched
on even duringthe dayti me.Insom ecoun -
tr ies, oper ationofthe headlam psvar ies due to
legal requirementsand self -impose doblig a-
tio ns. Set
tingthe ext erio rlight ing
Set tingo ptions Ex
terior light ingcan beset usin g:
R thel ight switch
R thec om binatio nswit ch (Ypage 99)
R theo n-bo ard com pute r(Y page 177)
Light switch Oper
ation 0047
0063
Left-han dstandi ng lamps
0048 0064
Right-hand standi nglamps
0049 0060
Parkinglamps ,lice nsep latea nd
ins trumen tclus terlight ing
004A0057 Automatic hea dlam pm ode,contro l-
le db ythe light sens or
004B 0058
Low-beam/hi gh-b eamh eadlam ps
0084 005E
Rear fog lamp
If yo uh earaw arning tone when youl eave the
veh icle, the lights maystill be switch edon.
X Tu rn the light switch to0058. The
exte riorlighti ng (excep tthe parking /
sta ndi ng lamps )switch esoff automa ticallyi f
yo u:
R rem ove theSma rtKeyfrom theigniti onlock
R op en the driver 'sdo or wh ilet he Sma rtKeyis
in po sitio n0092 inthe igniti onlock
Au tomati cheadlamp mode G
WA
RNING
Whe nthe light switch isset to0058,t he
lo w-b eamh eadlam psma ynotbe switch ed
on automa ticallyi fther eisf og ,snow or
othe rcauses ofpoor vis ibility duet ot he
we ath ercond itions such asspr ay.T he re isa
ris ko fana ccident.
In such situa tions, turn thelight switch to
0058.
The automa tichea dlam pfeature isonl yana id.
The driver isres ponsi blef or the vehicle's light-
ing atallt ime s.
0058 isthe preferred light switch positio n:
R The light setti ngisau toma ticallys electe d
acco rding tothe brightne ssofthe ambient
li ght (excep tion:po or vis ibility duet o
we ath ercond itions such asfog ,snow or
spr ay).
R Wi th the Sma rtKeyinp ositio n 0047 inthe igni-
tio nlock: the parking lamps ares witch edon
or off automa ticallyd epending on the bright-
ness ofthe ambient light.
R Wi th the enginerunning :ify ou have acti va-
ted thedaytime running lamps functio nvia
the on-b oard comp uter,the daytime running
la mps orthe parking lamps andthelow-
be am headlam psares witch edon oroff
au toma ticallyd epending on the brightne ss
of the ambient light.
X To
switcho nauto matic headlamp mode:
turn thelight switch to0058.
Can ada only:
The daytime running lamps improve thevisibil-
ity ofyour veh icled uring the day.The daytime
ru nning lamps functio nisr equired bylawi n
Ca nad a.Itcanno tther eforebe deacti vated .
Whe nthe eng ineisrunning andthevehiclei s
sta tionar y:ifyo us hift the automa tictrans mis-
si on from adriving positio nt op ositio n 005D the
da ytime running lamps orlow-b eamh ead-
la mps goouta fte r3m inutes. Ex
teri orlighti ng
97Lights andwind shield wipers Z

When
theengine isrunn ing,thevehicle issta-
tionary andinbright ambient light:ifyou turn
the light switch tothe 0060 position, theday-
time runninglamps andparking lampsswitch
on.
If the engine isrunn ingand youturn thelight
switch to0058,t hemanual settings take prec-
edence overthedaytime runninglamps.
USA only:
The daytime runninglamps improve thevisibil-
ity ofyour vehicle duringtheday. Todo this,
the daytime runninglamps functionmust be
switched onusing theon-board computer
(Y page 177).
If the engine isrunn ingand youturn thelight
switch to0060 or0058,t hemanual settings
take preceden ceover thedaytime running
lamps.
Low-beam headlamps G
WARNIN
G
When thelight switch isset to0058,t he
low-beam headlamps maynotbeswitched
on automatically ifthere isfog, snow or
other causes ofpoor visibility duetothe
weather conditionssuch asspray. Thereisa
risk ofan accident .
In such situation s,turn thelight switch to
0058.
Even ifthe light sensor doesnotdetect thatit
is dark, theparking lampsandlow-beam head-
lamps switch onwhen theignition isswitched
on and thelight switch isset tothe 0058 posi-
tion. Thisisap articularly usefulfunctioninthe
event ofrain andfog.
X To
switch onthe low-beam headlamps:
turn theSmart Keytoposition 0048inthe igni-
tion lock orstart theengine.
X Turn thelight switch to0058.
The green 0058indicator lampinthe instru-
ment cluster lightsup.
Rear foglamp
The rear foglamp improves visibilityofyour
vehicle forthe traff icbehind inthe event of
thick fog.Please takenoteofthe count ry-spe-
cific regulations forthe use ofrear foglamps. X
To switch onthe rear foglamp :turn the
Smart Keytoposition 0048inthe ignition lock
or start theengine.
X Turn thelight switch to0058 or0058.
X Press the005E button .
The yellow 005Eindicator lampinthe instru-
ment cluster lightsup.
X To switch offthe rear foglamp :press the
005E button .
The yellow 005Eindicator lampinthe instru-
ment cluster goesout.
Park inglamp s
! If
the batter ycharge isvery low,thepark-
ing lamps orstandin glamps areautomati-
cally switched offtoenable thenext engine
start .Always parkyourvehicle safelyandin
aw elllitarea, inaccordan cewith therele-
vant legal stipulations. Avoidusingthe0060
parking lampsoveraperiod ofseveral
hours. Ifpossible, switchonthe right- hand
0064 orleft- hand 0063 standin glamps.
X To switch on:turn thelight switch to0060.
The green 0060indicator lampinthe instru-
ment cluster lightsup.
Stand inglamp s
Switc hingonthe standin glamps ensures the
corr esponding sideofthe vehicle isillumina-
ted.
X To switch onthe stand inglamp s:the
Smart Keyisnot inthe ignition lockoritis in
position 0092inthe ignition lock.
X Turn thelight switch to0063 (left-hand side
of the vehicle) or0064 (right- handsideof
the vehicle). 98
Exterior
lightingLightsandwindshield wipers

Problems
withthewindshield wipers Problem
Possible
causes/co nsequences and0050 0050
Solutions The
windshield wipers
are jammed. Leaves
orsnow, forexample, maybeobstruct ingthe windshield
wiper movement .The wiper motor hasbeen deactivated.
X For safety reasons, youshould remove theSmartK eyfrom the
ignition lock.
or X Switch offthe engine usingtheStart /Stopbutton andopen the
driver's door.
X Remove thecause ofthe obstruct ion.
X Switch thewindshield wipersbackon. The
windshield wipers
fail completely. The
windshield wiperdriveismalfunction ing.
X Select another wiperspeed onthe combination switch.
X Have thewindshield wiperscheckedataq uali fied specialist
workshop. The
windshield washer
fluid from thespray noz-
zles nolonger hitsthe
cent erofthe wind-
shield. The
spray nozzlesare misaligned.
X Have thespray nozzlesadjusted ataq uali fied specialist work-
shop. Windshield
wipers
105Lightsandwindshiel dwipers Z

USA
only
0043 Sets thetemperature (Ypage 111)
0044 Switches themaximum coolingMAXCOOL onoroff (Ypage 113)
0087 Sets theairdistribution (Ypage 112)
0085 Defrosts thewindshiel d(Ypage 112)
0083 Switches coolingwithairdehumid ificationon/off(Ypage 110)
0084 Switches <0044004C00550010005500480046004C005500460058004F00440057004C0052
0051[ modeon/off (Ypage 114)
006B Sets theairflow (Ypage 112)
006C Switches therear window defroster on/off(Ypage 113) Notes
onusing theair-conditioning
system
Air-conditio ningsystem Below,
youcan find anumber ofnotes and
recommendations tohelp youusetheair-con-
ditioning systemoptimally .
R Switch oncooling withairdehumid ification
using the005A button. Theindicator lampin
the 005A button lightsup.
R Set thetemperature to72 ‡(22 †).
R Recommendation forairdistribution in
winter: setthe 009B and0061 settings.
Recommendation forairdistribution in
summer: setthe 009C setting. R
Only usethe"Windshie lddefrosting" func-
tion briefly untilthewindshiel disc lear
agai n.
R Only use<0044004C00550010005500480046004C005500460058004F00440057004C0052
0051[ modebriefly,e.g.
if there areunpleasa ntoutside odorsor
when inat unnel. Thewindows couldother-
wise fogup,since nofresh airisdrawn into
the vehicle in<0044004C00550010005500480046004C005500460058004F00440057004C0052
0051[ mode.
ECO start /stop function During
automatic engineswitch-off, thecli-
mate controlsystem onlyoperates ata
reduced capacity. Ifyou require fullclimate
cont rolcapacity, theECO start/st opfunction
can bedeactivated bypressing theECO but-
ton (Ypage 122). Overview
ofclimat econtrol systems
107Climat econtrol

Switching
the"windshield defrosting"
function onoroff X
Turn theSmartK eytoposition 0048inthe igni-
tion lock (Ypage 118).
X To switch on:press the0064 button.
The indicator lampinthe 0064 button lights
up.
The climate controlsystem switches tothe
following functions:
R high airflow
R high temperature
R air distribution tothe windshield andfront
side windows
R <0044004C00550010005500480046004C005500460058004F00440057004C0052
0051[ modeoff
X To switch off:press the0064 button.
The indicator lampinthe 0064 button goes
out. Thepreviously selectedsettingsare
restored. Air-recirculation moderemains
deactivated.
or X Dual-zone automatic climatecontrol:press
the 0058 button.
The indicator lampinthe 0064 button goes
out. Airflow andairdistribution aresetto
automatic mode. MAX
COOL maxim umcool ing
The MAX COOL functionisonly availa blein
vehicles forthe USA.
MAX COOL isonly operational whenthe
engine isrunning.
X To activate: pressthe00C9 button.
The indicator lampinthe button lightsup.
X To deactivat e:press the00C9 button.
The indicator lampinthe button goesout.
The previously selectedsettingsare
restored.
When youactivate MAXCOOL, climate control
switches tothe following functions:
R maximum cooling
R maximum airflow
R <0044004C00550010005500480046004C005500460058004F00440057004C0052
0051[ modeon Removing
condensation fromthe
window s
Windows foggeduponthe inside X
Act ivate the005A or0056 cooling withair
dehumidification function.
X Dual-zone automatic aircondition ing:acti-
vate the0058 mode button.
X Ifthe windows continue tofog up,activate
the 0064 "Windshield defrosting"function.
i You
should onlyselect thissettin guntil the
windshield isclear again.
Windows foggeduponthe outside X
Act ivate thewindshield wipers.
X Air-c onditioning system:pressthe009C or
009B button.
X Dual-zone automatic aircondition ing:press
the 008F button untilthe009C or009B
symbol appears inthe display .
i You
should onlyselect thissettin guntil the
windshield isclear again. Rear
window defroster
General notes The
rear window defroster hasahigh current
draw. Youshould therefore switchitoff as
soon asthe rear window isclear. Otherwise,
the rear window defroster switchesoffauto-
matically afterseveral minutes.
If the battery voltage istoo low, therear win-
dow defroster mayswitch off.
<002400460057004C005900440057004C0051004A001200470048004400460057
004C005900440057004C0051004A> X
Turn theSmartK eytoposition 0048inthe igni-
tion lock (Ypage 118).
X Press the006C button.
The indicator lampinthe 006C button lights
up orgoes out. Operat
ingthe climate controlsystems
113Climat econtrol

Problems
withtherear window defroster Problem
Possible
causes/co nsequences and0050 0050
Solutions The
indicator lampon
the 006C button
flashes. Therear win-
dow defroster hasdeac-
tivated prematurely or
cannot beactivated. The
on-board voltageistoo low because toomany electrical con-
sumers areswitched on.
X Switch offany consumers thatarenot required, e.g.reading
lamps, interior lighting orthe seat heating.
When thebattery issufficiently charged,therear window
defroster canbeactivated again. The
roof isopen.
X Close theroof.
When theroof isclosed, therear window defroster canbeactiva-
ted again. Switching
air-recirculation mode
on/off
General notes If
you switch on<0044004C00550010005500480046004C005500460058004F00440057004C0052
0051[ mode,the
windows canfogupmore quickly, inparticular
at low temperatures. Onlyuse<0044004C00550010005500480046004C005500460058004F00440057004C0052
0051[
mode briefly toprevent thewindows fromfog-
ging up.
<002400460057004C005900440057004C0051004A001200470048004400460057
004C005900440057004C0051004A> X
Turn theSmartK eytoposition 0048inthe igni-
tion lock (Ypage 118).
X To activate: pressthe0072 button.
The indicator lampinthe 0072 button lights
up.
i Air-r
ecirculation modeisautomatically
activated athigh levels ofpollution (dual-
zone automatic climatecontrolonly) orat
high outside temperatures. Whenair-recir-
culation modeisactivated automatically,
the indicator lampinthe 0072 button isnot
lit. Outside airisadded afterabout
30 minutes.
X To deactivat e:press the0072 button.
The indicator lampinthe 0072 button goes
out. i
Air-r ecirculation modedeactivates auto-
matically:
R after approximately fiveminutes atout-
side temperatures belowapproximately
41 ‡(5† )
R after approximately fiveminutes ifcooling
with airdehumidification isdeactivated
R after approximately 30minutes atoutside
temperatures aboveapproximately 41‡
(5 †) ifthe "Cooli ngwith airdehumidifi-
cation" functionisactivated Switching
theresidual heatonoroff
General notes The
residual heatfunct ionisonly availa bleon
vehicles forCanada.
It is possible tomake useofthe residual heat
of the engine tocont inue heating thestation-
ary vehicle forupto30 minutes afterthe
engine hasbeen switched off.The heating
time depends onthe setinterior temperature.
<002400460057004C005900440057004C0051004A001200470048004400460057
004C005900440057004C0051004A> X
Turn theSmartK eytoposition 0092inthe igni-
tion lock orremove it(Y page 118).
X To activate: pressthe004B or0056 but-
ton.
The indicator lampinthe 004B or0056 but-
ton lights up.
i The
blower willrun atalow speed regard-
less ofthe airflow setting. 114
Operat
ingthe climate controlsystemsClimat econtrol

i
If
you activate theresidu alheat function at
high temperature s,only theventilation will
be activated. Theblow erruns atmediu m
speed .
X To deactivate: pressthe004B or0056 but-
ton.
The indicator lampinthe 004B or0056 but-
ton goes out.
Resi dualheat isdeactiva tedautoma tically:
R after appro ximately 30minutes
R when theignition isswitched on
R ifthe battery voltage drops Setting
theairvents Important
safetynotes G
WARNING
Very hotorvery cold aircan flow from the
air vents. Thiscould resultinb urns orfrost-
bite inthe immedi atevicinity ofthe air
vents. Thereisar isk ofinjury.
Make surethatallvehicle occupants always
maintain asufficie ntdistance tothe airout-
lets. Ifnecessary ,redirect theairflowto
another areaofthe vehicle interior. G
WARNING
When AIRSCARF isswitched on,very hotair
can flow from thevents inthe head
restraints. Thiscould resultinb urns inthe
immedi atevicinity ofthe airvents. Thereisa
risk ofinjury.
Redu cethe heater outputbefore itbecomes
too hot.
In order toensure thedirect flowoffresh air
through theairvents intothevehicle interior,
plea seobserve thefollow ingnotes:
R keep theairinlet grilleonthe hood andin
the engine compartment onthe front-
passe ngersidefreeofblockage s,such as
ice, snow orlea ves.
R never covertheairvents orair intake grilles
in the vehicle interior. i
You
canmove theadjusters forthe air
vents verticall yorhorizontally toset the
direction ofthe airflow.
i For
optimal climatecontrolinthe vehicle ,
open theairvents completely andsetthe
adjusters tothe central position. Setting
thecenterairvents X
To open thecenterairvents: turnthe
adjuster inone ofcenter airvents 0043coun-
ter-clockwise.
X To clo sethe centerairvents: turnthe
adjuster inone ofcenter airvents 0043clock-
wise untilitengages . Setting
theside airvents 0043
Side window defroster vent
0044 Side airvent
X To open aside airvent: turntheadjuster
in the side airvent 0044tothe left.
X To clo seaside airvent: turntheadjuster
in the side airvent 0044tothe right untilit
engages . Setting
theairvents
115Climate control Z

Note
sonb reaki ng-in anew vehic le Impo
rtant safety notes
Th es ensors ystemo fsom edrivi ng and driving
sa fety syste ms adjus tsautoma ticallyw hile a
cer taind ista nce isbe ing driven after the vehi-
cle hasb eend elive redo rafter rep airs. Full
sy ste me ffecti vene ssisnot reache duntilthe
end ofthisteach-i nproced ure.
New andreplaced brakepads and discs only
rea chthe irop tim um braking effect after sev-
era lhun dred kilome ters ofdri ving. Compe n-
sa te for thisb yapplyin gg reate rforce tothe
bra kepedal. The
first 1000 miles(150 0k m)
Th em orey ou look after the enginewhen itis
new ,the mor esatisfied youw illb ew ithi ts
pe rfo rma nce inthe futur e.
R Yo us houldt heref ore drive atvarying vehicle
and enginespee ds for the first 1,000 miles
(1, 500 km).
R Avoi dheavy load s,e.g .drivi ng atfullthro t-
tle ,duringt hisp eriod.
R Ch ang egearing oodt ime,be for ethe tac h-
ome ternee dlei s00C3of thewaytot he red
ar ea ofthe tachomete r.
R Do not manua llys hift to alow ergear to
bra kethe vehicle.
R Try toavoidd epressi ng the accelera tor
pe dalbeyond thepoint ofres istanc e(kick-
do wn) .
After 1000 miles( 15 00 km) ,you can increase
the enginespee dg radu ally and accelera tethe
veh iclet ofulls pe ed.
Yo us houlda lsoo bserve the senote sonb reak-
ing inifthe engineorparts ofthe drive train
on your veh icleh aveb eenr eplaced .
Alw ayso bserve the maxim um permi ssible
sp ee d. Dri
ving Impo
rtant safety notes G
WA
RNI NG
Ob jects inthe driver 'sfoo twe llma yrestrict
the clearanc earound thepedalsor block a de
pre sse dpedal. Thisjeo pardi zes theoper-
ati ng and roadsafety ofthe vehicle. There is
ar isko fana ccident.
Stow allo bjects secu rel yint he veh icles o
tha tthe yd on otgetinto thedriver 'sfoo t-
we ll.W henu sing floo rma tsor car pets, ma ke
su re tha tthe ya repro perlys ecured sotha t
the ydon otslip or obstru ctthe pedals.D o
not place sever alfloo rma tsor car pets on
top ofone another. G
WA
RNI NG
Unsu itablef ootwe arcan hinde rcorrec t
us ag eo fthe pedals,e .g.:
R sho eswith thick soles
R sho eswith high heels
R slip pe rs
Th ere isar isko fana ccident.
We arsuita blef ootwe arto ens urec orrec t
us ag eo fthe pedals. G
WA
RNI NG
If yo us witch offthe igniti onwhiled rivi ng,
sa fety -releva ntfunctio nsareo nlya vailab le
wi th limi tati ons ,orn otatall. Th iscou ld
af fec t,for exa mpl e,the powe rsteeri ng and
the brakeboost ing effect. Youw illr eq uire
cons idera blym oree ffort toste erand brake.
Th ere isar isko fana ccident.
Do not switch offthe igniti onwhiled rivi ng. G
WA
RNI NG
If the parki ng bra kehasn otbeen fully
rel easedw hend rivi ng, the parki ng bra ke
can :
R ove rheatand causeafire
R lose its holdfunctio n.
Th ere isar isko ffirea nd anacc ident.
Re leas et he parki ng bra kefullyb efor ed riv-
ing off.
! Do
not warm upthe enginewhiles tatio n-
ar y. Pu llaw ay immed iatel y.Avoi dhigh
eng inespee ds and fullthro ttleuntilthe
eng inehasr eache dits op era ting temp era-
tur e. Dr
ivi ng
117Drivi ng andp arki ng Z