2018 MERCEDES-BENZ SLC ROADSTER Owner's Manual

case of lateralacceleration, during overrun
modeorw hend riving on steept errain.
XTo deactivate:pull steering wheel paddle
shifter ;and holditinp lace.
or
XUse the lever to switch the transmission posi-
tion.
or
XUse the DYNAMI CSELECT button to change
the drive program.
Permanen tsetting
XTo activate: shift the selector lever to h.
XPress button:.
XTo deactivate: press button:.
Shiftinggears
Allv ehicle s(exce pt for Mercedes-AMG
SLC 43)
XTo shift up: pull steering wheel paddle
shifter ;.
The automatic transmission shifts up to the
next gear. If the maximum engine speed in the currently
engaged gearisr eached and youcontinu eto
accelerate ,the automatic transmission auto-
matically shifts up in order to prevent engine
damage.
XTo shift down: pull steering wheel paddle
shifter :.
The automatic transmission shifts dow nto
the next gear.
Automati cdowns hifting occurs whe ncoast-
ing.
If the engine were to excee dthe maximum
engine speed whe nshifting down, the auto-
mati ctransmission protects against engine
damag ebynot shifting down.
Mercedes-AMG SLC 43
!If manual gearshifting is permanently acti-
vated, the automatic transmission doe snot
shift up automaticall yevenw hent he engine
limiting speed for the current gearisr eached.
Whent he engine limiting speed is reached,
the fue lsup plyisc ut to prevent the engine
from overrevving. Alway smake sure that the
engine speed doe snot reach the red are aof
the tachometer.T here is otherwisearisko f
engine damage.
XTo shift up: pull steering wheel paddle
shifter ;.
The automatic transmission shifts up to the
next gear.
XTo shift down: pull steering wheel paddle
shifter :.
The automatic transmission shifts dow nto
the next gear.
Automati cdowns hifting occurs whe ncoast-
ing.
If the engine were to excee dthe maximum
engine speed whe nshifting down, the auto-
Automatic transmission127
Drivin gand parking
Z

matic transmission protects against engine
damage by not shifting down.
Shift recommendation
All vehicles (except for Mercedes-AMG
SLC 43)
The gearshift recommendations assist you in
adopting an economical driving style.The rec-
ommended gear is shown in the multifunction
display.
XShift to recommended gear ;according to
gearshift recommendation :when shown in
the multifunction display of the instrument
cluster.
Mercedes-AMG SLC 43
The gearshift recommendations assist you in
adopting an economical driving style .The rec-
ommended gear is shown in the multifunction
display.
XShift to recommended gear ;according to
gearshift recommendation :when shown in
the multifunction display of the instrument
cluster.
Kickdown
XFor maximu macceleration, depress the
accelerator pedalb eyond the pressure point.
The automatic transmission shifts to alower
gear depending on the engine speed.
XShift back up once the desired speed is
reached.
During kickdown, you cannot shift gears using
the steering wheelp addle shifters.
If you apply full throttle, the automatic trans-
mission shifts up to the next gear when the
maximu mengine speed is reached. This pre-
vents the engine from overrevving.
128Automatic transmission
Driving and parking

Problems with the transmission
ProblemPossible causes/consequences andMSolutions
The transmission has
problems shifting gear.The transmission is losing oil.
XHave the transmission checked ataqualified specialist workshop
immediately.
The acceleration ability
is deteriorating.
The transmission no lon-
ger changes gear.The transmission is in emergency mode.
It is only partly possible to engage the gears, or the transmission is in
position i.
XStop the vehicle.
XShift the transmission to position j.
XSwitch off the engine.
XWait at least ten seconds before restarting the engine.
XShift the transmission to positionhork.
XHave the transmission checked at aqualified specialist workshop
immediately.
Refueling
Important safety notes
GWARNING
Fuel is highly flammable. If you handle fuel
incorrectly, there is arisk of fire and explo-
sion.
You must avoid fire, open flames, creating
sparks and smoking. Switch off the engine
and, if applicable, the auxiliary heating before refueling.
GWARNING
Fuel is poisonous and hazardous to health.
There is arisk of injury.
You must make sure that fuel does not come into contact with your skin, eyes or clothing
and that it is not swallowed. Do not inhale fuel
vapors. Keep fuel away from children.
If you or others come into contact with fuel,
observe the following:
RWash away fuel from skin immediately
using soap and water.
RIf fuel comes into contact with your eyes,
immediately rinse them thoroughly with
clean water. Seek medical assistance with-
out delay.
RIf fuel is swallowed, seek medical assis-
tance without delay.Don ot induce vomit-
ing.
RImmediately change out of clothing which
has come into contact with fuel.
GWARNING
Electrostatic buildupc an create sparks and
ignite fuel vapors. There is arisk of fire and
explosion.
Always touch the vehicle body before opening
the fuel filler flap or touching the fuel pump
nozzle. Any existing electrostatic buildupi s
thereby discharged.
Do not get into the vehicle again during the refu-
eling process. Otherwise, electrostatic charge
could build up again.
!Do not use diesel to refuel vehicles with a
gasoline engine. Do not switch on the ignition
if you accidentally refuel with the wrong fuel.
Otherwise, the fuel will enter the fuel system. Even small amounts of the wrong fuel could
result in damage to the fuel system and the
engine. Notify aqualified specialist workshop
and have the fuel tank and fuel lines drained
completely.
Refueling129
Driving and parking
Z

!Overfilling the fuel tank could damage the
fuel system.
!Take care not to spill any fuel on painted
surfaces. You could otherwise damage the
paintwork.
!Use afilter when adding fuel from afuel can.
The fuel lines and/or the fuel injection system
could otherwise be blocked by particles from
the fuel can.
If you overfill the fuel tank, fuel could spray out
when the fuel pump nozzle is removed.
For further information on fuel and fuel quality
(
Ypage 291).
Refueling
General information
The fuel filler flap is unlocked or locked auto-
matically when you unlock or lock the vehicle
with the SmartKey or using KEYLESS-GO.
The position of the fuel filler cap is displayed
8 in the instrument cluster. The arrow next
to the filling pump indicates the side of the vehi-
cle.
Opening the fuel filler flap
:To open the fuel filler flap
;Insert the fuel filler cap
=Tire pressure table
?Instruction label for fuel type to be refueled
XSwitch the engine off.
XRemove the SmartKey from the ignition lock.
XPress the fuel filler flap in the direction of
arrow :.
The fuel filler flap swings up.
XTurn the fuel filler cap counterclockwise and
remove it.
XInsert the fuel filler cap into the holder
bracket on the inside of fuel filler flap ;.
XCompletely insert the filler neck of the fuel
pump nozzle into the tank, hook in place and
refuel.
XOnly fill the tank until the pump nozzle
switches off.
iDo not add any more fuel after the pump
stops filling for the first time. Otherwise, fuel
may leak out.
Closing the fuel filler flap
XReplace the cap on the filler neck and turn
clockwise until it engages audibly.
XClose the fuel filler flap.
iClose the fuel filler flap before locking the
vehicle.
iIf you are driving with the fuel filler cap open,
the 8 reserve fuel warning lamp flashes.
The ; Check Engine warning lamp may
also light up. Amessage appears in the mul-
tifunction display(
Ypage 192).
For further information on warning and indi-
cator lamps in the instrument cluster, see
(
Ypage 207).
130Refueling
Driving and parking

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

Applyingautom atically
The electric parking brak eisautomatically
applie dwhen th etransmission is in position j
and :
Rthee ngineiss witched off or
Rthed river is no twearing aseat belt and th e
driver's door is opened
To preven tthe electric parking brak efromb eing
automatically applied, pull handle :.
The electric parking brak eisalso engage dauto -
matically if:
RDistanc ePilotD ISTR ONICbring sthe vehicl e
to as tandstill or
Rth eH OLDf unction is keepin gthe vehicl esta-
tionary
In addition ,atleast on eofthefollowin gcondi -
tion smustbef ulfilled :
Rthee ngineiss witched off
Rthed river is no twearing aseat belt and th e
driver's door is opened
Rthere is asystem malfunction
Rthep owe rsupply is insufficien t
Rthev ehicl eiss tationary for alengthy period
The red F(USAonly) or ! (Canada only)
indicator lamp in th einstrumen tcluste rlights
up.
The electric parking brak eisnotautomatically
engage diftheengin eisswitched off by th eECO
start/sto pfunction .
Releasing automatically
The electric parking brak eisrelease dautomat -
ically when all of th efollowin gconditi onsa re
fulfilled :
Rthee ngineisr unnin g
Rthes eat belt tongue is engage dinthebelt
buckl e
Rthet ransmission is in position hork and
you depress th eaccelerato rpedal or shif t
from position jtoh ork
Rif th etransmission is in position k,thetrunk
lid mus tbeclosed If th
eseat belt tongue is no tengage dint heseat
belt buckle, th efollowin gconditi onsm ustb e
fulfilled :
Rthed river's door is closed
Ryou mov ethe transmission out of position j
or you hav epreviously driven at aspee d
abov e2m ph (3 km/h)
Rif thetransmission is in position k,thetrunk
lid mus tbeclosed
When th eelectric parking brak eisreleased,
th e! indicator lamp goes out in th einstru-
men tcluster.
Eme rgency braking
The vehicl ecan also be braked during an emer-
gency by usin gthe electric parking brake.
XWhil edriving, push handle :of th eelectric
parking brake.
The vehicl eisbraked for as lon gasthehandle
of th eelectric parking brak eispressed. The
longer th eelectric parking brak ehandle is
depressed, th egreate rthe braking force .
During braking :
Rawarning tone sounds
RtheReleas eParkin gBrakemessage
appear s
Rther ed F (USAonly) or ! (Canada
only) indicator lamp in th einstrumen tcluste r
flashes
When th evehicl ehas been braked to astand -
still, th eelectric parking brak eisengaged.
Park ing th evehicle for along period
If you leav ethe vehicl eparked for longer than
four weeks, th ebattery may be damaged by
exhaustive discharging.
If you leav ethe vehicl eparked for longer than six
weeks, th evehicl emay suffer damag easa
result of lack of use.
XVisit aqualified specialist workshop and see k
advice .
iYou can obtain information about trickle
chargers from aqualified specialist work-
shop.
Parking133
Driving and parking
Z

Drivingtips
General notes
Important safet ynotes
GWARNING
If you switch of fthe ignition whil edriving,
safety-relevant function sare only available
wit hlimitations, or no tatall. Thi scould affect,
fo re xample, th epowe rsteerin gand th ebrake
boostin geffect. You will require considerably
more effort to steer and brake .There is arisk
of an accident.
Do no tswitch of fthe ignition whil edriving.
GWARNING
If you operat emobile communication equip -
men twhen driving, you may be distracted
from th etraffic situation .You could also los e
contro lofthevehicle. There is ariskofa n
accident.
Only operat ethise quipmen twhen th evehicle
is stationary.
Observ ethe lega lrequirements fo rthe country
in whic hyou are driving. Some jurisdiction spro-
hibi tthe driver from usin gamobile phone whil e
drivin gavehicle.
If you mak eacallw hiled riving, always use
hands-free mode. Only operat ethe telephon e
when th etraffic situation permits. If you are
unsure ,pull over to asafel ocation and stop
befor eoperatin gthe telephone.
Bear in min dthatatas peed of only 30 mph
(approximately 50 km/h), th evehicle cover sa
distanc eof44f t(approximately 14 m)per sec-
ond.
Drive sensibly –save fuel
Observe the following tips to save fuel:
RThe tires should always be inflated to the rec-
ommended tire pressure.
RRemove unnecessary loads.
RWarm up the engin eatlow engin espeeds.
RAvoid frequenta cceleration or braking.
RObserve the servicei ntervals in the Mainte-
nanc eBooklet or in the servicei nterval dis-play. Have all the maintenanc
ework carried in
accordance with Daimler AG regulations.
Fuel consumption also increases when driving in cold weather, in stop-start traffic and in hilly ter-
rain.
Drinking and driving
GWARNING
Drinkin gand driving and/or takin gdrugs and
driving are very dangerous combinations.
Even asmall amount of alcohol or drugs can
affect your reflexes, perceptions and judg-
ment.
The possibility of aserious or even fatal acci-
dent is greatly increased when you drink or
take drugs and drive.
Do not drink or take drugs and drive or allow
anyone to drive who has been drinking or tak-
ing drugs.
Emission control
GWARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Inhaling
these exhaust gases leads to poisoning. There
is ar isk of fatal injury. Thereforen ever leave
the engin erunning in enclosed spaces with-
out sufficientv entilation.
Certain engin esystems are designed to keep
the level of poisonous component sinexhaust
fumes within legal limits.
These systems only work at peak efficiency if
they are serviced exactly in accordance with the
manufacturer's specifications .Always have
work on the engin ecarried out at aqualified
specialist workshop. Mercedes-Benz recom-
mends that you use an authorized Mercedes-
BenzC enter for this purpose. In particular, work
relevant to safety or on safety-related systems
must be carried out at aqualified specialist
workshop.
The engin esettings must not be changed under
any circumstances. Furthermore, all specific
servicew ork must be carried out at regular
intervals and in accordance with the Mercedes-
Benzs ervicer equirements. Details can be found
in the Maintenance Booklet.
134Driving tips
Driving and parking