2019 MERCEDES-BENZ SLC ROADSTER engine

or
R you press theStart /Stopbutton onceon
vehicles withKEYLE SS-GO
When youclose thedriver's doorwiththeigni-
tion switched on,the steering wheelisalso
automatically movedtothe previously set
position.
The lastposition ofthe steering columnis
stored whenyouswitch offthe ignition or
when youstore thesettingwith thememory
funct ion(Ypage 95).
Crash- responsive EASY-EXIT featur e If
the crash-r esponsive EASY-EXI Tfeature is
triggered inan accident ,the steering column
will move upwards whenthedriver's dooris
opened. Thisoccurs irrespect iveofthe posi-
tion ofthe Smart Keyinthe ignition lock.This
makes iteasier toexit thevehicle andrescue
the occupant s.
The crash-r esponsive EASY-EXI Tfeature isonly
operational ifthe EAS Y-EXI T/ENTRY featureis
activated inthe on-board computer
(Y page 178). Mirr
ors Inside
rearview mirror X
Anti-glare mode:flickanti-glare lever0043
forwards orback. Exterior
mirrors
Adjust ingthe exterior mirrors G
WARNING
You could losecontrolofyour vehicle ifyou
do the following whiledriving:
R adjust thedriver's seat,head restraint ,
steering wheelormirrors
R fasten theseat belt
There isarisk ofan accident .
Adjust thedriver's seat,head restraint ,
steering wheelandmirror andfasten your
seat beltbefore startingthe engine. G
WARNING
The exter iormirror onthe front -passenger
side reduces thesize ofthe image. Visible
object sare actually closerthantheyappear.
This means thatyoucould misjudge thedis-
tanc efrom roadusers traveling behind,e.g.
when changing lane.There isarisk ofan
accident .
For this reason, alwaysmake sureofthe
actual distance fromtheroad users traveling
behind byglancing overyour shoulder. X
Make surethattheSmart Keyisin position
0047 or0048 inthe ignition lock.
X Press button 0043for the left exter iormirror
or button 0044for the right exteriormirror.
The indicator lampinthe correspon dingbut-
ton lights upinred.
The indicator lampgoesoutagain after
some time.Youcanadjust theselected 92
Mirr
orsSeats, steering wheelandmirrors

Ext
erio rlight ing Gener
alnot es
For reas onsof safe ty,Mer cedes-Ben zrec om-
men dsthat you drivewith thelight sswit ched
on even duringth edayti me.Insom ecoun -
tr ies, oper ationof theheadlam psvar ies due to
legal requirementsand self-impose doblig a-
tio ns. Set
tingth eext erio rlight ing
Set tingopt ions Ex
terior light ingcan beset usin g:
R thelight switch
R thecom binatio nswit ch(Ypage 99)
R theon -bo ard com pute r(Y page 176)
Light switch Oper
ation 0047
0063
Left-han dstandi nglamps
0048 0064
Right-hand standi nglamps
0049 0060
Parkinglamps ,lice nseplat eand
ins trumen tclus terlight ing
004A0057 Automatic hea dlam pmod e,contro l-
le d by the light sens or
004B 0058
Low-beam/hi gh-b eam hea dlam ps
0084 005E
Rear fog lamp
If yo uhea ra wa rning tonewhen youleav ethe
veh icle, the lights maysti llbe switch edon.
X Tu rn the light switch to0058. The
exte riorlighti ng(excep tthe parking /
sta ndi ng lamps )sw itch esoff automa tically if
yo u:
R rem ove theSma rtKeyfrom theigniti onlock
R op en the driver 'sdo or wh ile the Sma rtKeyis
in po sitio n0092 inthe igniti onlock
Au tomati chea dlamp mode G
WA
RNING
Whe nthe light switch isset to0058, the
lo w-b eam hea dlam psma ynot beswitch ed
on automa tically if ther eis fog ,snow or
othe rcau ses ofpoor vis ibility dueto the
we ath ercond itions such asspr ay.The reisa
ris kof an acci dent.
In such situa tions, turn thelight switch to
0058.
The automa tichea dlam pfea ture isonl yan aid.
The driver isres ponsi ble for the vehicle's light-
ing atalltime s.
0058 isthe preferred light switch positio n:
R The light setti ngisau toma tically sel ecte d
acco rding tothe brightne ssofthe ambient
li ght (excep tion:po or vis ibility dueto
we ath ercond itions such asfog ,snow or
spr ay).
R Wi th the Sma rtKeyin po sitio n0047 inthe igni-
tio nlock: the parking lamps aresw itch edon
or off automa tically de pendi ng on the bright-
ness ofthe ambient light.
R Wi th the enginerunning :if yo uha ve 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 psaresw itch edon oroff
au toma tically de pendi ng on the brightne ss
of the ambient light.
X To
switchon auto matic headlamp mode:
turn thelight switch to0058.
Can ada only:
The daytime running lamps improve thevisibil-
ity ofyour veh icledu ring theday.The daytime
ru nning lamps functio nis req uired bylaw in
Ca nad a.Itcanno tther eforebe deacti vated .
Whe nthe engineisrunning andthevehicleis
sta tionar y:ifyo ushi ftthe automa tictrans mis-
si on from adri ving positio nto positio n005D the
da ytime running lamps orlow-b eam hea d-
la mps gooutafte r3 minu tes. 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, themanual 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 176).
If the engine isrunn ingand youturn thelight
switch to0060 or0058, themanual settings
take preceden ceover thedaytime running
lamps.
Low-beam headlamps G
WARNIN
G
When thelight switch isset to0058, the
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. Thisisaparticularly 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 takenoteof the 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
a well litarea, 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 wiperscheckedataquali fiedspecialist
workshop. The
windshield washer
fluid from thespray noz-
zles nolonger hitsthe
cent erofthe wind-
shield. The
spray nozzlesare misaligned.
X Have thespray nozzlesadjusted ataquali fiedspecialist 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(Y page 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 dis clear
agai n.
R Only use<0044004C00550010005500480046004C005500460058004F00440057004C0052
0051[ modebriefly,e.g.
if there areunpleasa ntoutside odorsor
when inatunnel. 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 econ trol systems
107Climat eco ntrol

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 econ trol

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 econ trol

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 resultin burns orfrost-
bite inthe immedi atevicinity ofthe air
vents. Thereisarisk 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 resultin burns 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 grilleon the 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 yor horizontally 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