2018 MERCEDES-BENZ SLC ROADSTER lock

Problems with fuel and the fuel tank
ProblemPossible causes/consequences andMSolutions
Fuel is leaking from the
vehicle.The fuel line or the fuel tank is faulty.
GWARNING
Risk of explosion or fire.
XTurn the SmartKey immediately to position uin the ignition lock
(Ypage 116) and remove it.
XDo not restart the engine under any circumstances.
XConsult aqualified specialist workshop.
The fuel filler flap cannot
be opened.The fuel filler flap is not unlocked.
XUnlock the vehicle (Ypage 65).
The SmartKey battery is discharged or nearly discharged.
XUnlock the vehicle using the mechanical key (Ypage 67).
The fuel filler flap is unlocked, but the opening mechanism is jammed.
XConsult aqualified specialist workshop.
Parking
Important safety notes
GWARNING
Flammable material such as leaves, grass or
twigs may ignite if they come into contact with
hot parts of the exhaust system or exhaust
gas flow. There is arisk of fire.
Park the vehicle so that no flammable mate-
rials come into contact with parts of the vehi-
cle which are hot. Take particular care not to
park on dry grassland or harvested grain
fields.
GWARNING
If you leave children unsupervised in the vehi-
cle, they could set it in motion by, for example:
Rrelease the parking brake.
Rshift the automatic transmission out of the
parking position P.
Rstart the engine.
In addition, they may operate vehicle equip-
ment and become trapped. There is arisk of
an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
!Always secure the vehicle correctly against
rolling away.O therwise, the vehicle or its driv-
etrain could be damaged.
To ensure that the vehicle is secured against
rolling away unintentionally:
Rthe electric parking brake must be applied.
Rthe transmission must be in position j.
Rthe SmartKey must be removed from the igni-
tion lock.
Rthe front wheels must be turned towards the
curb on steep uphill or downhill gradients.
Switching off the engine
GWARNING
The automatic transmission switches to neu-
tral position Nwhen you switch off the engine.
The vehicle may roll away.T here isarisk of an
accident.
After switching off the engine, always switch
to parking position P.Prevent the parked vehi-
Parking131
Driving and parking
Z

cle from rolling away by applying the parking
brake.
XApplythe electri cparking brake.
XShif tthe transmission to position j
(Ypage 123).
XWith the SmartKe y:turn the SmartKey to
position uin the ignition lock and remove it.
The immobilizer is activated.
XWith KEYLESS-GO: press the KEYLESS-GO
Start/Stop button (Ypage 116).
The engine stopsa nd allthe indicator lamps in
the instrument cluster go out.
If the driver'sd oorisc losed, this is the same
as SmartKey position 1.Ifthe driver'sd oor
is open, this is the sam easSmartKey position
u (
Ypage 116).
The engine can be switched off while the vehicle
is in motio nbypressing and holding the Start/
Stop button for aboutt hree seconds. Thisfunc-
tion operate sindependently of the ECO start/
stop automatic engine switch-off function.
Electric parkingb rake
General notes
GWARNING
If yo ulea ve childrenu nsupervised in the vehi-
cle ,they could set it in motio nby,for example:
Rrelease the parking brake.
Rshift the automatic transmission outoft he
parking position P.
Rstartthe engine.
In addition, they may operate vehicle equip-
ment and become trapped .There is arisko f
an accident and injury.
Whenl eaving the vehicle ,alway stake the
SmartKey with yo uand lock the vehicle .Never
leave childrenu nsupervised in the vehicle. The function of the electri
cparking brake is
dependent on the on-board voltage .Ifthe on-
board voltage is low or there is amalfunction in
the system, it may not be possible to applyt he
released parking brake.
XIf this is the case ,only park the vehicle on
level ground and secure it to prevent it rolling
away.
XShif tthe automatic transmission to position
j.
It may not be possible to release an applied
parking brake if the on-board voltage is low or
there is amalfunction in the system. Contact a
qualified specialist workshop.
The electri cparking brake performs afunction
test at regula rinterval swhile the engine is
switched off. The sounds that can be heard while
this is occurring are normal.
Applyingorr eleasingmanually
XTo engage: push handle :.
Whent he electri cparking brake is engaged,
the red F(USA only )or! (Canada
only )indicator lamp lights up in the instru-
ment cluster.
The electricp arking brake can also be applied
whe nthe SmartKey is removed.
XTo release: pull handle:.
The red F(USA only )or! (Canada
only )indicator lamp in the instrument cluster
goeso ut.
The electricp arking brake can only be released:
Rwhe nthe SmartKey is in position 1in the
ignition lock (Ypage 116 )or
Rif the ignition wa sswitched on using the
Start/Stop button
132Parking
Drivin gand parking

Limited braking performance on salt-
treated roads
If you driveonsalted roads,alayer of salt resi-
due may for monthebraked iscsand brake
pads. This can result in asignificantly longer
braking distance.
RIn ordertop revent any salt build-up, apply the
brakes occasionally while paying attention to th et raffic conditions.
RCarefully depress th ebrakep edal and the
beginnin gand end of ajou rney.
RMaintain agreater distanc etothevehicle
ahead.
Servicing th ebrakes
!The brakef luid level may be to olow, if:
Rif th ered brakew arning lamp lightsupi n
th ei nstrumentc luster and
Ryou hearawarning tone while th eengine is
running
Observe additional warning messages in the
multifunction display.
The brakef luid level may be to olow due to
brak epad wear or leaking brak elines.
Hav ethe brakes ystem checked immediately.
Consult aqualifie dspecialist workshop to
arrange this.
!As th eESP®system operates automatically,
th ee ngine and th eignitio nmust be switched
off (th eSmartKey must be in position uor
1 in th eignitio nlock), if th eelectric parking
brakeist ested onabraking dynamometer
(maximum 10 seconds).
Brakin gtriggered automatically by ESP
®may
cause severe damage to th ebrakes ystem.
All check sand maintenanc ework on th ebrake
system must be carried out at aqualifie dspe-
cialis tworkshop.
Hav ebrakep ads installe dand brak efluid
replaced at aqualifie dspecialist workshop.
If th ebrakes ystem has onl ybeen subject to
moderatel oads, you should tes tthe functional-
ity of your brakes at regular intervals.
Information on BA S(Brake Assist)(
Ypage 57).
Mercedes-Ben zrecommend stha tyou onl yhave
brakep ads/linings installe donyour vehicle
whichh ave been approved for Mercedes-Benz
vehicle sorwhichcorrespondtoane quivalent
qualitys tandard. Brake pads/linings whichh avenot been approved for Mercedes-Ben
zv
ehic
les
or whicha re not of an equivalent qualityc ould
affect your vehicle's operatin gsafety.
Mercedes-Ben zrecommend sthaty ou onl yuse
brakef luid that has been specially approved for
your vehicle by Mercedes-Benz, or whichc orre-
sponds to an equivalent qualitys tandard. Brake
fluid whichh as not been approved for
Mercedes-Ben zvehicle sorw hichisn ot of an
equivalent qualityc ould affect your vehicle's
operatin gsafety.
High-performance brake system
(except Mercedes-AMG SLC 43)
AM Gb rakes ystems are designed for heavy
loads and have component swith corresponding
properties. This may lead to noise when braking.
This will dependo n:
RSpeed
RBrakingforce
RAmbientc onditions, e.g .temperature and
humidity
The wear of individual component softhebrake
system, such as th ebrakep ads/linings or brake
discs, depends on th eindividual driving style
and operatin gconditions.
For this reason, it is impossibletos tate am ile-
age that will be valid unde rall circumstances. An
aggressived riving style will lead to high wear.
You can obtain morei nformationonthisf roma
qualifie dspecialist workshop.
New and replaced brakep ads and discsonly
reacht heir optimum braking effect after several
hundred kilometers of driving .Compensate for
this by applyingg reater force to thebrakep edal.
Keep this in mind, and adapt your driving and
braking accordingl yduringt hisb reak-in period.
Excessive heavy braking results in correspond-
ingly high brak ewear. Observe th ebrakes ystem
warning lamp in th einstrumentc luster and note
any brak estatus messages in th emultifunction
display. Especially for high performanc edriving,
it is important to maintain and have th ebrake
system checked regularly.
Driving tips137
Driving and parking
Z

Drivingonw et road s
Hydroplaning
If water has accumulated to acertai ndept hon
th er oads urface, there is adanger of hydro-
planin goccurring.
Fo rthisr eason ,intheevent of heav yrain or in
condition sinwhichh ydroplaning may occur ,
you mus tdrive in th efollowin gmanner:
Rlowe ryour speed
Ravoid rut s
Ravoid sudden steerin gmovements
Rbrake carefully
Drivin gonflooded road s
!Do notdrive through floode dareas. Chec k
th ed ept hofa ny water befor edrivin gthrou gh
it .D rive slowly through standin gwater. Oth-
erwise ,water could ente rthe vehicle interio r
or engin ecom partment. It can then damage
th ee ngine's or automatic transmission' s
electronic components. It can also be sucke d
in by th eengine's air intake connection and
cause engin edamage.
Winte rdrivin g
GWARNING
If you shift down on aslipper yroads urfac ein
an attempt to increase th eengine's braking
effect ,the drive wheels could los etheir grip.
There is an increase ddanger of skidding and
accidents .
Do no tshift down fo radditional engin ebrak-
in gonas lipperyroads urface.
GDANGER
If th eexhaus tpipe is blocke doradequat e
ventilation is no tpossible, poisonous gases
suc hasc arbon monoxide (CO) may ente rthe
vehicle. Thi sisthecase, e.g. if th evehicle
becomes trappe dinsnow. There is arisko f
fatal injury.
If you leav ethe engin eortheauxiliar yheatin g
running ,makes uret he exhaus tpipe and are a
around th evehicle are clear of snow. To
ensur eana dequat esupply of fresh air, ope na
window on thesideoft hevehicle that is no t
facin gintot he wind.
Hav eyour vehicle winter-proofed at aqualified
specialis tworkshop at th eonset of winter.
Drive particularly carefully on slipper yroads ur-
faces. Avoid sudden acceleration ,steerin gand
braking maneuvers .Donotuse cruise control.
If th evehicle threatens to skid or canno tbe
stopped when movin gatlow speed:
XShift th etransmissio ntoposition i.
The outsid etem perature indicator is no t
designed to serve as an ice-warnin gdevic eand
is therefore unsuitable fo rtha tp urpose.
Changes in th eoutsid etem perature are dis -
playe dafter ashort delay.
Indicated temperature sjusta bov ethe freezin g
poin tdon otguarantee that th eroads urfac eis
free of ice. The road may still be icy, especially in
wooded areas or on bridges. The vehicle could
skid if you fail to adapt your drivin gstyle. Always
adapt your drivin gstyle and drive at aspeed to
suit th eprevailin gweather conditions.
You should pay special attention to road condi-
tion swhen temperature sare around freezin g
point.
Fo rm orei nformat ion on drivin gwiths now
chains, see (
Ypage 262).
Fo rm orei nfor mati
on on drivin gwiths ummer
tires ,see (Ypage 262).
Observ ethe note sint he"Winte roperation "sec-
tion (
Ypage 262).
Drivin gsystems
Cruis econtro l
General notes
Cruise contro lmaintain saconstan troa ds peed
fo ry ou. It brake sautomatically in order to avoid
exceedin gthe set speed. On lon gand steep
downhill gradients, especially if th evehicle is
laden, you mus tselec talowe rgear in goo dtim e.
By doin gso, you will mak euse of th ebraking
effect of th eengine. Thi srelieves th eload on th e
brake syste mand prevents th ebrake sfrom
overheatin gand wearin gtoo quickly.
Use cruise contro lonlyifr oada nd traffic con-
dition smakeita ppropriat etomaintain asteady
138Driving systems
Driving an dparking

tone sounds.Ifthe distance fall sbelow the min-
imum ,the distance maynol ongerbes hown.
Warnin gdisplays
Warning displa yfor the front area
:
Segments on the left-hand side of the vehi-
cle
;Segments on the right-hand side of the vehi-
cle
=Segments showing operational readiness
The warning displays sho wthe distance
between the sensors and the obstacle .The
warning displa yfor the front area is locate don
the dashboard above the cente rairvents .The
warning displa yfor the rea rareaisl ocated
between the rol lbars.
The warning displa yfor each side of the vehicle
is divided into fiv eyello wand two red segments.
Parking Assist PARKTRONICiso perational if yel-
lo ws egments showing operational readiness =
light up.
The selected transmission positio nand the
direction in which the vehicl eisrolling deter-
mine which warning displa yisactive when the
engine is running.
Automatic transmission:
Transmission posi-
tionWarnin gdisplay
hFron tareaa ctivated
k, ior the vehicle
is rolling backwardsRear and front areas
activated
jNo area sactivated
One or mor esegments light up as the vehicle
approaches an obstacle ,depen ding on the vehi-
cle's distance fromt he obstacle.Inaddition,
warning tone sareissued.
When the distance to the obstacle is sufficient,
yo uw illh earani ntermittent warning tone .The
shorter th edistance to the obstacle ,the shorter
the frequency of the intermittent warning tones
becomes. When the minimum distance is
reached, yo uhearac ontinuous warning tone.
Deactivatin goractivatin gParking
Assist PARKTRONIC
:Deactivate soractivates Parking Assist
PARKTRONIC
;Indicato rlam p
If indicator lamp ;lights up ,Parking Assist
PARKTRONICisd eactivated .Parking Guidance
is also deactivated.
iParking Assist PARKTRONICisa utomati-
cally activated when yo uturnt he SmartKeyt o
position 2in the ignition lock.
Driving system s151
Driving an dparking
Z

Important safety notes
The rear viewcamera is only an aid. It is no ta
replacemen tfor your attention to your immedi-
ate surroundings. You are always responsible
for saf emaneuverin gand parking .Makes ure
that there are no persons, animals or objects in
th em aneuverin garea when you are maneuver-
ing or parking .
Under th efollowin gcircumstances, th erear
vie wc amera will no tfunction ,orwill function in
al imite dmanner:
Rif th etrunk lid is open
Rin heav yrain ,sno worf og
Rat night or in ver ydark places
Rif th ecamera is exposed to ver ybright ligh t
Rif thearea is lit by fluorescent bulbs or LE D
lighting (the display may flicker)
Rif there is asudde nchang eint emperature,
e.g. when driving int oaheated garage in win -
te r
Rif th ecamera len sisdirtyoro bstructed.
Observ ethe note sonc leaning
(
Ypage 242)
Rif th erear of your vehicl eisdamaged. In this
case, hav ethe camera position and setting
checke dataq ualified specialist workshop
The field of vision and other function softherear
vie wc amera may be restricted due to additional
accessories on th erear of th evehicl e(e.g.
license plat eholder, bicycle rack) .
On vehicles wit hheight-adjustable chassis,
leaving th estandard height can result in inac-
curacie sint
he g
uide lines, depending on tech -
nical conditions.
iThe contras tofthedisplay may be affecte d
by th esudde npresence of sunligh torother
ligh tsources, e.g. when exiting agarage. Pay
particular attention in this situation .
iIf usabilityisseverely restricted, e.g. due to
pixel errors ,have th edisplay repaire dor
replaced.
iThe rear vie wcamera is protected from rain -
drops and dust by mean sofaflap.W hen th e
rear vie wcamera is activated, this flap opens.
The flap closes again when :
Ryou havefinishe dthe maneuverin gprocess
Ryou switch off th eengine
Ryou open th etrunk
Observ ethe note sonc leaning (
Ypage 242). Fo
rtechn ical reasons, th eflap may remain
open briefly after th erear vie wcamera has
been deactivated.
Activating/deactivating th erearv iew
camera
XTo activate: makesuret hatthe SmartKey is
in position 2in th eignition lock.
XMak esuret hatthe Activatio nbyRgearfunction is selected in th emultimedia system;
see th eDigital Owner' sManual.
XEngage revers egear .
The rear vie wcamera flap opens. The multi-
media system shows th earea behind th evehi-
cle wit hguide lines.
The imag efromt herear vie wcamera is avail-
able throughout th emaneuverin gprocess.
To deactivate: ther ear vie wcamera deacti -
vates if you driv eforwards ashort distances or
shif tthe transmission to j.
The inner segments of th ewarning indicator are
displayed in red if there is acom plete system
failure. The indicator lamp in th ePARKTRONIC
butto nlights up.
If th erear system fails :
Rther ear segments are displayed in red when
reversing
Rth er ear segments are no tdisplayed when
driving forwards
Display sinthemultimedi asystem
The rear vie wcamera may sho wadistorted vie w
of obstacles, sho wthemi ncorrectl yornotat all.
The rear vie wcamera does no tsho wo bjects in
th ef ollowin gpositions:
Rver yclose to th erear bumper
Runder th erear bumper
Rin close range abov ethe handle on th etrunk
lid
!Objects no tatground level may appear to
be further away than they actually are, e.g. :
Rtheb umper of aparked vehicl e
Rthed rawbar of atrailer
Rth eb all couplin gofatrailer to whitch
Rther ear section of an HGV
Ras lante dpost
Driving systems155
Driving and parking
Z

Blind Spot Assist monitors the areaupto10ft
(3.0 m)behind your vehicle and directly nex tto
your vehicle, as shown in the diagram. For this
purpose, Blind Spot Assist uses radar sensor sin
the rear bumper.
If the lanes are narrow, vehicles driving in the
lane beyond the lane nex ttoyour vehicle may be
indicated, especially if the vehicles are not driv-
ing in the middle of their lane. This may be the
case if ther eare vehicles driving at the inner
edge of their lanes.
Due to the natur eofthe system:
Rwarning smay be issued in error when driving
close to crash barriers or similar solid lane
borders.
Rwarning smay be interrupted when driving
alongside long vehicles, e.g. trucks, for apro-
longed time.
Indicator and warning display
:Yellow indicator lamp/red warning lamp Blind Spot Assist is not activ
eatspeeds below
approximately 20 mph (30 km/h). Vehicles in
the monitoring range are then not indicated.
When Blind Spot Assist is activated, indicator
lamp :in the exterior mirrorsl ights up yellow
at speeds of up to 20 mph (3 0km/ h).Ats peeds
above 20 mph (30 km/h), the indicator lamp
goeso utand Blind Spot Assist is operational.
If av ehicl eisd etected within the blind spot
monitoring rang eatspeeds above 20 mph
(30 km/h), warning lamp :on the correspond-
ing sid elights up red.T hiswarning is always
emitted when avehicl eenter sthe blind spot
monitoring rang efrom behind or from the side.
Wheny ouovertake avehicle, the warning only
occurs if the difference in speed is less than
7m ph (12 km/h).
The yellow indicator lamp goeso utif reverse
gea rise ngaged .Inthis event, Blind Spot Assist
is no longer active.
The brightness of the indicator/warning lamps
is adjuste dautomaticall yaccording to the ambi-
ent light.
Collisio nwarning
Ifav ehicl eisd etected in the monitoring rang eof
Blind Spot Assist and yo uswitch on the corre-
sponding turn signal ,adoubl ewarning tone
sounds. Re dwarning lamp :flashes. If the turn
signal remains on, vehicles detected are indica-
ted by the flashing of red warning lamp :.
There are no further warning tones.
Switchin gonBlind SpotA ssist
XMake sure that Blind Spot Assist
(Ypage 171 )isa ctivate dinthe on-board
computer.
XTurn the SmartKey to position 2in the igni-
tion lock.
Warning lamps :in the exterio rmirrors light
up red for approximately 1.5 seconds and
then turn yellow.
160Driving systems
Driving and parking

Important safety notes
GWARNING
If you operate information systems and com-
munication equipmen tintegrate dinthevehi-
cle when driving ,you may be distracte dfrom
th et raffic situation .You could also lose con-
trol of th evehicle. Ther eisariskofana cci-
dent.
Only operate this equipmen twhen th etraffic
situation permits. If you are no tsuret hatthis
is possible ,park th evehicl epayin gattention
to traffic condition sand operate th eequip-
men twhen th evehicl eiss tationary.
You must observ ethe legal requirements for th e
country in whic hyou are currentl ydriving when
operating th eon-bo ard computer.
GWARNIN G
If th einstrumen tcluste rhas faile dormal-
functioned, you may no trecognize function
restriction sinsystems relevan ttosafety. The
operating safet yofyour vehicl emay be
impaired .Ther eisar iskofana ccident.
Drive on carefully. Hav ethe vehicl echecked
at aq ualified specialist workshop immedi-
ately.
The on-board computer only shows message sor
warning sfromc ertai nsystems in th emultifunc-
tion display. You should therefor emakes ure
your vehicl eisoperating safely at all times .
If th eoperating safet yofyour vehicl eis
impaired ,pull ove rassoonasitiss afetodos o.
Contac taqualified specialist workshop.
Fo rano verview, see th einstrumen tpanel illus-
tration (
Ypage 32).
Display sand operation
Instrumen tcluster lighting
The lighting in th einstrumen tcluster, in th edis-
plays and th econtrols in thevehicl einterior can
be adjusted usin gthe brightness control knob.
The brightness control knob is locate donthe
botto mleftoft heinstrumen tcluste r
(
Ypage 32).
XTurn th ebrightness control knob clockwise or
counter-clockwise.
If you tur nthe ligh tswitch (
Ypage 95 )tot he
Ã, TorL position ,the brightness
will depend upon th ebrightness of th eambi -
en tlight.
The ligh tsensor in th einstrumen tcluste r
automatically control sthe brightness of th e
multifunction display. In daylight, th edisplays
in th einstrumen tcluste rare no tilluminated.
Speedometer with segments
The segments in th espeedometer indicat e
whic hspee drange is available.
RCruis econtro lactivated (Ypage 138):
The segments ligh tupfromt hestore dspee d
to th emaximum speed.
RDistanc ePilot DISTRONI Cisactivated
(Ypage 140):
On eort wo segments in th eset spee drange
ligh tup.
RDistanc ePilot DISTRONI Cdetects avehicl ein
fron tmoving mor eslowly than th estored
speed:
The segments between th espee doft hevehi-
cle in fron tand th estoreds pee dligh tup.
Tachometer
!
Do no tdriveint heoverrevving range, as this
could damag ethe engine.
The red ban dinthetachometer indicates th e
engine's overrevving range.
The fuel suppl yisinterrupted to protect th e
engin ewhen th ered ban disreached.
Outsidet emperatur edisplay
You should pay special attention to road condi-
tion swhen temperatures are aroun dfreezing
point.
Bea rinm indt hatthe outside temperature dis-
play indicates th etem perature measured and
does no trecord th eroad temperature.
The outside temperature display is in th emulti-
function display (
Ypage 165).
Ac hang eint heoutside temperature is shown in
th em ultifunction display after adelay.
Display sand operation163
On-boardc omputer and displays
Z