2019 MERCEDES-BENZ SLC ROADSTER battery

Never
leavechildren oranimal sunattended
in the vehicle.
When leavingthe vehicle, always take the
SmartKey withyouand lock thevehicle. This
also appliesforthe Digital Vehicle Keyifthe
"Digital Vehicle Key"function isactivated via
Mercedes meconnect . Unlo
cking andopeni ngdoors from
the inside
! The
side window swil lnot open/close if
the battery isdischarge dor ifthe side win-
dows haveicedup.Itwil lthen notbepossi-
ble toclose thedoor. Donot attempt to
force thedoor closed. Youcould otherwise
dama gethe door orthe side window .
You canopen adoor from inside thevehicle
even ifit has been locked.
If the vehicle haspreviou slybeen locked from
the outside ,opening adoor from theinside
wil ltrigger theanti-theft alarm system. Switch
off the alarm (Ypage 64). X
Pull door handle 0044.
If the door islocked, lockingknob0043pops
up. The door isunlocked andcanbe
opened.
When adoor isopened, theside window on
that side opens slightly .When thedoor is
closed, theside window closesagain. Cen
trally locking andunloc kingthe
vehic lefrom theinside
You cancentrally lockorunlock thevehicle
from theinside. Forexample ,you can unlock the
front- passe ngerdoor from theinside or
lock thevehicle beforeyoupullawa y. X
To unloc k:press button 0043.
X To loc k:press button 0044.
If the front- passe ngerdoor isclosed, the
vehicle locks.
The central locking buttondoesnotlock or
unlock thefuel fillerflap orthe stowage com-
partment inthe center console.
You cannot unlockthevehicle centrally from
the inside ifthe vehicle hasbeen locked with
the SmartKey orKEYLESS- GO.
You canopen adoor from inside thevehicle
even ifit has been locked.
If alocked doorisopened fromtheinside, the
previou sunlock statusofthe vehicle willbe
taken intoconsideration if:
R the vehicle waslocked usingthelocking
button forthe central locking, or
R ifthe vehicle waslocked automa tically
The vehicle willbe fullyunlocked ifit had pre-
viousl ybeen fullyunlocked. Ifonly thedriver's
door hadbeen previou slyunlocked, onlythe
door which hasbeen opened fromtheinside is
unlocked. 72
Do
orsOpeni ngand closi ng

X
Take themechanic alkey outofthe Smart -
Key (Ypage 68).
X Insert themechanic alkey into thetrunk lid
lock asfar asitwill go. X
Turn themechanic alkey from position 0047
count er-clockwise asfar asitwill gotoposi-
tion 0048.Simultaneously pullthetrunk lid
handle.
The trunk isunlocked.
X Turn themechanic alkey back toposition
0047 and remove it.
X Insert themechanic alkey into theSmart -
Key. Emergency
releaseforthe trunk
You canunlock thetrunk lidfrom theinside
with theemergenc yrelease button. X
Press emergenc yrelease button0043briefly.
The trunk lidunlocks andopens.
The trunk lidcan beunlocked andopened with
the trunk lidemergenc yrelease whenthevehi-
cle isstation aryorwhile driving.
The trunk lidemergenc yrelease doesnot
unlock thetrunk lidifthe battery isdisconn ec-
ted ordischarged. Trunk
lidemergenc yrelease light:
R Emergen cyrelease button0043flashes for
30 minutes afterthetrunk lidisopened
R Emergen cyrelease button0043flashes for
60 minutes afterthetrunk lidisclosed Side
windows Import
antsafety notes G
WARNIN
G
While opening theside windows, bodyparts
could become trappedbetween theside
window andthedoor frame asthe side win-
dow moves. Thereisarisk ofinjury.
Make surethatnobody touches theside
window duringtheopening procedure. If
somebody becomestrapped,releasethe
switch orpull theswitch toclose theside
window again. G
WARNIN
G
While closing theside windows, bodyparts
in the closing areacould become trapped.
There isarisk ofinjury.
When closing makesurethatnoparts ofthe
body areinthe closing area.Ifsomebody
becomes trapped,releasetheswitch or
press theswitch toopen theside window
again. G
WARNIN
G
If children operatetheside windows they
could become trapped, particularly ifthey
are left unsupervised. Thereisarisk of
injury.
When leaving thevehicle, alwaystake the
Smart Keywith youand lock thevehicle.
Never leavechildren unsupervised inthe
vehicle. Side
window reversing feature
The front sidewindows areequipped withan
automatic reversingfeature.Ifasolid object
blocks orrestr ictstheupward movemen tof Side
window s
75Opening andclosing Z

has
been setcorrect ly.Ifthis isnot the
case, repeat thesteps above. Problems
withtheside window s G
WARNING
If you close aside window againimmediately afterithas been blocked orreset, theside win-
dow closes withincreased ormaximum force.Thereversing featureisthen notactive. Partsof
the body could betrapped inthe closing areainthe process. Thisposes anincreased riskof
injury oreven fatalinjury.
Make surethatnoparts ofthe body areinthe closing area.Tostop theclosing process,
release theswitch orpush theswitch againtoreopen theside window. Problem
Possible
causes/co nsequences and0050 0050
Solutions A
side window cannot
be closed because itis
blocked byobject s,e.g.
leaves inthe window
guide. X
Remove theobject s.
X Close theside window. A
side window cannot
be closed andyoucan-
not see thecause. If
aside window isobstructed duringclosing andreopens again
slightly:
X Immediately afterthewindow blocks,pullthecorresponding
switch againuntiltheside window hasclosed.
The side window isclosed withincreased force.
If aside window isobstructed againduring closing andreopens
again slightly:
X Immediately afterthewindow blocks,pullthecorresponding
switch againuntiltheside window hasclosed.
The side window isclosed without theautomatic reversingfea-
ture. The
side windows can-
not beopened orclosed
using theconven ience
opening/closing fea-
ture. The
SmartKey batteryisdischarged ornearly discharged.
X Check theSmartKey battery(Ypage 69)and replace itifneces-
sary (Ypage 69). Roof
Import
antsafety notes G
WARNING
If you donot fully open/close thesoft top,
the soft- tophydrau licsdepressurize aftera
short time.Thiscauses thesoft toptolower
unexpectedly andmay cause youorothers
to be trapped. Thereisarisk ofinjury. Always
openorclose thesoft topcom-
pletely. G
WARNING
Closing theroof manually isacomplicated
and techn ically demanding procedure,which
requires alot ofstrengt h.You orothers can
become trapped. Thereisarisk ofinjury. 78
RoofOpening
andclosing

Problems
withtheseat heating Problem
Possible
causes/co nsequences and0050 0050
Solutions The
seat heating has
switched offprema-
turely orcannot be
switched on.The vehi-
cle's electrical system
voltage istoo low
because toomany elec-
trical consumers are
switched on. Switch
offelectrical consumers thatyoudonot need, suchasthe
rear window defroster orinterior lighting.
Once thebattery issufficiently charged,switchonthe seat heating
again. AIRSCA
RF
Setting headlevelheating (AIRSCARF) G
WARNING
When AIRSCARF isswitched on,very hotair
can flow from thevent sin the head
restraint s.This could result inburns inthe
immediate vicinityofthe airvent s.There isa
risk ofinjury.
Reduce theheater output beforeitbecomes
too hot. The
AIRSCARF functionwarms thehead and
neck areaofvehicle occupants withwarm air.
The warm airflows outofthe holes inthe head
restraint s.
The three redindicator lampsinthe button
indicate theheating levelyouhave selected.
X Ensure thattheSmartK eyisin position 0048
in the ignition lock.
X To switch on:press button 0043.
Three redindicator lampsinthe button light
up. The blower startsupafter apreheating
phase ofseven seconds. X
Press button 0043repeatedly untilthedesired
heating levelisset.
X To switch off:press button 0043repeatedly
until allthe indicator lampsgoout.
i The
blower continues running forseven
seconds tocool down theheating elements.
i If
the battery voltage istoo low, AIRSCARF
may switch off.
Problems withAIRSCA RF AIRSCARF
hasswitched offprematurely orwill
not switch on.The vehicle's electrical system
voltage istoo low because toomany electrical
consumers areswitched on.
X Switch offelectrical consumers thatyoudo
not need, suchasthe rear window defroster
or interior lighting.
X Switch onAIRSCARF again. Steering
wheel Import
antsafety notes 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. Steering
wheel
89Seats,steering wheeland mirrors
Z

The
high-beam headlamps areswitched on
automatically. The0057 indicator lampin
the instr ument cluster alsolights up.
If you aredriving atspeeds belowapprox-
imately 16mph (25km/ h)or other road
users havebeen detect edorthe roads are
adequa telylit:
The high-beam headlamps areswitched off
automatically. The0057 indicator lampin
the instr ument cluster goesout.The00CE
indicator lampinthe multifunct iondisplay
remains lit.
X To switch off:move thecombinat ion
switch backtoits normal position ormove
the light switch toanother position.
The 00CE indicator lampinthe multifunct ion
display goesout. Interior
lighting Overview
ofinterior lighting Overhead
controlpanel
0043 003D Switch esthe left- hand reading lamp
on/of f
0044 0033 Switch esthe automatic interiorlight-
ing cont rolon/of f
0087 003D Switch esthe right- hand reading lamp
on/of f
0085 004A Switch esthe inter iorlighting on/off Interior
lighting control
General notes In
order toprevent thevehicle's batteryfrom
discharging, theinter iorlighting functionsare
automatically deactivatedaftersome time, unless
theSmart Keyisin position 0048inthe
ignition lock.
The color andbrightn essofthe ambient light-
ing are setviathe multimedia system
(Y page 177).
Automa ticinterior lighting control X
To switch on:setthe switch tothe cent er
position.
When theautomatic interiorlighting control
is switched on,the switch isflush withthe
overhead controlpanel.
X To switch off:setthe switch tothe 0033
position.
The inter iorlighting automatically switcheson
if you:
R unlock thevehicle
R open adoor
R remove theSmart Keyfrom theignition lock
The inter iorlighting isswitched onfor aset
time when theSmart Keyisremoved fromthe
ignition lock.Youcanactivate thisdelayed
switch- offusing theon-board computer
(Y page 177). Replacing
bulbs Import
antsafety notes G
WARNIN
G
Bulbs, lampsandconn ector scan getvery
hot when operating. Ifyou change abulb,
you could burnyourself onthese compo-
nent s.There isarisk ofinjury.
Allow these compon entstocool down
before changing abulb.
Vehicles withhalogen lamps
Do not use alamp thathasbeen dropped orif
its glass tubehasbeen scratc hed.
The lamp mayexplode if:
R you touch it
R itis hot
R you drop it
R you scratc hit
Only operate bulbsinenclosed lamps
designed forthat purpose. Onlyinstall spare Replacing
bulbs
101Lightsandwindshield wipers Z

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