2018 MERCEDES-BENZ SLC ROADSTER Owner's Manual

XTo deactivate ESP®:press button :until
the å ESP®OFF warning lamp lights up in
the instrument cluster.
The ÷ OFF
message appears in the multi-
functio ndisplay.
XTo activate ESP®:briefl ypress button :.
The å ESP®OFF warning lamp in the
instrument cluster goe sout.T he ÷ ESP®
ONmessage appears in the multifunctio ndis-
play.
Characteristic sofactivatedS PORT han-
dling mode
If SPOR Thandling modeisa ctivatedand one or
more wheels start to spin, the ÷ESP®warn-
ing lamp in the instrument cluster flashes. ESP®
onlys tabilizes the vehicl etoalimite dd egree.
Whe nSPOR Thandling modeisa ctivated:
RESP®onlyimprovesd riving stability to alim i-
ted degree
Rtractio ncontroliss tilla ctivated
Rengine torque is no longer limite dand the
drive wheels are able to spin
RESP®stil lprovides support when yo ubrake
firmly
Characteristic swhenE SP®is deactivated
If ESP®is deactivate dand one or more wheels
start to spin, the ÷ESP®warning lamp in the
instrument cluster flashes. In such situations,
ESP
®will not stabilize the vehicle.
If yo udeactivate ESP®:
RESP®no longer improvesd riving stability
Rengine torque is no longer limite dand the
drive wheels are able to spin
Rtractio ncontroliss tilla ctivated
RActive Brake Assist is no longer available ;nor
is it activate difyoubrake firmly with assis-
tance from ESP
®
RPRE-SAFE®is no longer available ,nor is it
activate difyoubrake firmly and ESP®inter-
venes
RESP®stil lprovides support when yo ubrake
fi
rmly
EBD (electronicb rake forcedistribu-
tion)
General information
EBD monitors and controls the brake pressure
on the rearw heelstoi mprove driving stability
whil ebraking.
Important safety notes
iObserve the "Important safety notes "sec-
tio nfor driving safety systems(Ypage 56).
GWARNING
If EBD is malfunctioning ,the rearw heelscan
lock, e.g .under ful lbraking .Thisi ncreases the
ris kofs kidding and an accident.
Yo us houl dtherefore adap tyou rd riving style
to the different handling characteristics. Have
the brake system checked at aquali fied spe-
cialist workshop.
Observe informatio nregarding indicator and
warning lamps (
Ypage 204 )aswellasd isplay
messages (Ypage 181).
ADAPTIVE BRAKE
i
Observe the "Important safety notes "sec-
tio n(Ypage 56).
ADAPTIVE BRAK Eenhances braking safety and
offers increased braking comfort. In additio nto
the braking function, ADAPTIVE BRAK Ealsoh as
the HOLD functio n(
Ypage 148)and hill start
assist (Ypage 118).
Protectio nagainstt heft
Immobilizer
XTo activate with the SmartKey: remove the
SmartKey from the ignition lock.
XTo activate with KEYLESS-GO: switch the
ignition off and open the driver'sd oor.
XTo deactivate: switch on the ignition.
The immobilize rprevents your vehicl efrom
being started withou tthe correct SmartKey.
Whe nleaving the vehicle, always take the
SmartKey with yo uand lock the vehicle. The
Protectiona gainsttheft63
Safety
Z

engine can be started by anyone withavalid
SmartKey that is left inside the vehicle.
iThe immobilizer is alwaysd eactivated when
you start the engine.
In the event that the engine cannot be started
(yet the vehicle's batter yischarged), the sys-
tem is not operational. Contac tanauthorized
Mercedes-Benz Center or call
1-800-FOR-MERCedes (in the USA)o r
1-800-387-0100 (in Canada).
ATA (anti-theft alarms ystem)
XTo arm:lock the vehicle with the SmartKey or
KEYLESS-GO.
Indicator lamp :flashes. The alarm system
is armed after approximately 15 seconds.
XTo switch off: unlock the vehicle with the
SmartKey or KEYLESS-GO.
Av isual and audible alarm is triggered if the
alarm system is armed and you open:
Rad oor
Rthe vehicle with the mechanical key
Rthe trun klid
Rthe hood
Rthe glove box
Rthe stowage space under the armrest
XTo tur nthe alarmo ff with the SmartKey:
press the %or& button on the Smart-
Key.
The alarm is stopped.
or
XInsertt he SmartKey into the ignition lock.
The alarm is stopped.
XTo stop the alarmu sing KEYLESS-GO:
grasp the outside door handle. The SmartKey
must be outside the vehicle.
The alarm is stopped.
or
XPress the Start/Stop button on the dash-
board. The SmartKey must be inside the vehi-
cle.
The alarm is stopped.
The alarm is not switched off, even if you close
the open door that triggered it, for example.
If the alarm continues for more than
30 seconds, the mbrace emergency call sys-
tem automatically notifies the Customer
Assistance Center.
This is done either by tex tmessage or data
connection. The emergency call system
sends the message or data provided that:
Ryou have subscribed to the mbrace service.
Rthe mbrace serviceh as been activated
properly.
Rthe necessary mobile phone network is
available.
64Protection against theft
Safety

SmartKey
Important safety notes
GWARNING
If children are left unsupervised in the vehicle,
they could:
Roperate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
Rrelease the parking brake
Rshift the automatic transmission out of park
position P
Rstart the engine
There is arisk of an accident and injury.
Never leave children or animals unattended in
the vehicle.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. This
also appliestom obile phones if the "Digital
Car Key in smartphone" function is activated
via the Mercedes me connect web app.
GWARNING
If you attach heavy or large object stothe
SmartKey, the SmartKey could be uninten-
tionally turned in the ignition lock. This could
cause the engine to be switched off. There is a risk of an accident.
Do not attach any heavy or large object stothe
SmartKey. Remove any bulky key rings before
insertingt he SmartKey into the ignition lock.
!Keep the SmartKey away from stron gmag-
netic fields. Otherwise, the remote control
function could be affected.
Strong magnetic fields can occur in the vicin-
ity of powerful electrical installations.
Do not keep the SmartKey:
Rwith electronic devices, e.g. amobile phone
or another SmartKey
Rwith metallic objects, e.g. coins or metal foil
Rinside metallic objects, e.g. ametal case
This can affect the functionality of the Smart- Key.
SmartKey functions
:& Locks the vehicle
;FUnlockst he trunk lid
=%Unlockst he vehicle
XTo unlock centrally: press the%button.
If you do not open the vehicle within approx-
imately 40 seconds of unlocking:
Rthe vehicle is locked again.
Ranti-theft protection is reactivated.
XTo lock centrally: press the&button.
The SmartKey centrally locks/unlocks:
Rthe doors
Rthe trunk lid
Rthe stowage compartmentint he center con-
sole
Rthe fuel filler flap
The turn signals flash once when unlocking and
three times when locking.
You can also set an audible signal to confirm
that the vehicle has been locked. The audible
signal can be activated and deactivated using
the on-board computer (
Ypage 174).
When it is dark, the surround lighting also comes
on if it is activated in the on-board computer
(
Ypage 173).
KEYLESS-GO
General notes
Bear in mind that the engine can be started by
any of the vehicle occupants if there is aKEY-
LESS-GO key in the vehicle (
Ypage 118).
SmartKey65
Opening and closing
Z

Locking/unlockingcentrally
You can start,lockorunlock thevehicle using
KEYLESS-GO .Todothis, you onl yneedc arry the
SmartKey with you. You can combine th efunc-
tions of KEYLESS-GO with those of aconven-
tional SmartKey. Unlockt hevehicle by using
KEYLESS-GO ,for instance, and lockitu singthe
& button on th eSmartKey.
The driver' sdoor and th edoor at whicht hehan-
dle is used, must bothbec losed. The SmartKey
must be outside th evehicle .When locking or
unlocking with KEYLESS-GO ,the distance
between th ekey and th ecorresponding door
handle must not be greater than 3ft(1m).
Ac heck whichp eriodicallyestablishesar adio
connectio nbetween th evehicle and th eSmart-
Key determine swhether avalid SmartKey is in
th ev ehicle .This occurs, for example:
Rwhen starting th eengine
Rwhile driving
Rwhen th eexternal door handles are touched
XTo unlock th evehicle: touch th einner sur-
fac eoft hedoor handle.
XTo lock th evehicle: touch sensor surface :
or ;.
Makes ure that you do not touch th einner
surface of th edoor handle.
XConvenience closing feature: touch
recesseds ensor surface ;for an extended
period.
Further informatio nontheconvenience clos-
ing feature (
Ypage 76).
Deactivating and activating
If you do not intend to use aSmartKey for an
extended perio doftime, you can deactivate the
KEYLESS-GO function of th ekey. The SmartKey
will then use veryl ittle power,therebyc onserv- ing battery power.F
or thepurposes of activa-
tion/deactivation, th evehicle must not be
nearby.
XTo deactivate: pressthe& button on the
SmartKey twic einrapid succession.
The battery check lamp (
Ypage 68 )ofthe
SmartKey flashes twic ebriefly and lightsu p
once, then KEYLESS-GO is deactivated.
XTo activate: pressany button on th eSmart-
Key.
or
XInsertt heSmartKey int othe ignitio nlock.
KEYLESS-GO and all of its associate dfeatures
are available again.
Changing th esettings of th elocking
system
You can change th esettings of th elockin gsys-
tem .This meanso nlyt he driver' sdoor,t helock-
able stowage compartments in th evehicle inte-
rior and th efuel filler flap are unlocked when the
vehicle is unlocked. This is useful if you fre-
quently travel alone.
XTo change th esetting: pressand hold down
the % and& buttons simultaneously
for about six second suntil th ebattery indica-
to rlamp (
Ypage 68 )flashes twice.
If th esettin goft helockin gsystem is changed
within th esignal range of th evehicle ,pressing
the & or% button:
Rlocks or
Runlock sthe vehicle
The SmartKey now functionsasf ollows:
XTo unlock:pressthe % button once.
XTo unlock centrally: pressthe % button
twice.
XTo lock centrally: pressthe& button.
The KEYLESS-GO function is changed as fol-
lows:
XTo unlock th edriver's door: touch theinner
surface of th edoor handle on th edriver's
door.
XTo unlock centrally: touch theinner surface
of th edriver or front-passenger door handle.
XTo lock centrally: touch theouter sensor
surface on one of th edoor handles.
66SmartKey
Opening and closing

XTo restore the factory settings:press and
hol dd ownthe % and& buttons simul-
taneouslyf or approximatelys ixseconds until
the battery check lamp (
Ypage 68 )flashes
twice.
Mechanical key
General notes
If the vehicl ecan no longer be locked or
unlockedw itht he SmartKey or with KEYLESS-
GO ,use the mechanical key.
If yo uusethe mechanical key to unlock and
open the driver's door or the trunk lid, the anti-
thef talarm system will be triggered .Switch off
the alarm (
Ypage 64).
Removing the mechanical key
XPush release catch :in the direction of the
arrow and at the same time remove mechan- ica lkey ; from the SmartKey.
For further informatio nabout :
Runlocking the driver's door (Ypage 72)
Runlocking the trunk (Ypage 73)
Rlocking the vehicl e(Ypage 72)
Insertingthe mechanical key
XPush mechanical key ;completelyi nto the
SmartKey unti litengages and release
catch :is back in its basicp osition.
SmartKey battery
Important safety notes
GWARNING
Batterie scontain toxica nd corrosive substan-
ces. If batteries are swallowed, it can resul tin
severe health problems .There is ariskoff atal
injury.
Kee pbatteries outoft he reach of children. If
ab attery is swallowed, see kmedica lattention
immediately.
HEnvironmental note
Batterie scontain pollu-
tants .Itisi llegalto dispose
of them with the household
rubbish. The ymustbec ol-
lected separatelya nd dis-
posed of in an environmen-
tally responsibl erecycling
system.
Dispose of batteries in an
environmentally responsi-
bl em anner. Take dis-
chargedb atteries to aquali -
fie ds pecialist workshop or
to ac ollectio npoint for
used batteries.
The SmartKey batteries contain perchlorate
material ,which mayr equire specia lhan dling
and regard for the environment. National guide-
lines must be observed during disposal. In Cal-
ifornia ,see www.dtsc.ca.gov/
HazardousWaste/Perchlorate/index.cfm .
Mercedes-Benz recommends thaty ouhave the
batteries replaced at aquali fied specialist work-
shop.
SmartKey67
Opening and closing
Z

Checking thebattery
XPress the &or% button.
The battery is working properl yifbattery
check lamp :lightsupb riefly.
The battery is discharged if battery check
lamp :does no tlight up briefly.
XChange th ebattery (Ypage 68).
If th eSmartKey battery is checked within the
signal reception range of th evehicle ,pressing
the & or% button:
Rlocks or
Runlock sthe vehicle
iYou can get abattery at any qualified spe-
cialist workshop.
Replacin gthe battery
You require aCR20253V cellbattery.
XTaket hemechanical ke yout of th eSmartKey
(Ypage 67).
XPress mechanical key ;intot he SmartKey
opening in th edirection of th earrow until bat-
tery compartmen tcover :opens. Do not
hold battery compartmen tcover :closed
while doings o.
XRemove battery compartmen tcover :.
XRepeatedly tap th eSmartKey against your
palm until battery =falls out.
XInsertt henewb attery witht hepositiv eter-
minal facing upwards. Use alint-free cloth to
do so.
XMakes ure that th esurface of th ebattery is
free of lint, grease and other contaminants.
XInsertt hefrontt absofb attery compartment
cover :intot he housing and then pres sto
close it.
XInsertm echanical key ;intot he SmartKey
(Ypage 67).
XCheckt hefunction of all SmartKey buttons on
th ev ehicle.
68SmartKey
Opening and closing

Problems with the SmartKey
ProblemPossible causes/consequences andMSolutions
You can no longer lock or
unlock the vehicle using
the SmartKey.The SmartKey battery is discharged or nearly discharged.
XCheck the SmartKey battery (Ypage 68) and replace it if necessary
(Ypage 68).
If this does not work:
XUnlock (Ypage 72) or lock (Ypage 72) the vehicle using the
mechanical key.
There is interference from apowerful source of radio waves.
XUnlock (Ypage 72) or lock (Ypage 72) the vehicle using the
mechanical key.
The SmartKey is faulty.
XUnlock (Ypage 72) or lock (Ypage 72) the vehicle using the
mechanical key.
XHave the SmartKey checked at aqualified specialist workshop.
You can no longer lock or
unlock the vehicle using
KEYLESS-GO.KEYLESS-GO was deactivated.
XReactivate KEYLESS-GO (Ypage 65).
The SmartKey battery is discharged or nearly discharged.
XCheck the SmartKey battery (Ypage 68) and replace it if necessary
(Ypage 68).
If this does not work:
XUnlock (Ypage 72) or lock (Ypage 72) the vehicle using the
mechanical key.
There is interference from apowerful source of radio waves.
XUnlock (Ypage 72) or lock (Ypage 72) the vehicle using the
mechanical key.
KEYLESS-GO is malfunctioning.
XLock/unlock the vehicle using the remote control function of the
SmartKey.
XHave the vehicle and SmartKey checked at aqualified specialist
workshop.
If the vehicle can also not be locked/unlocked using the remote con-
trol function:
XUnlock (Ypage 72) or lock (Ypage 72) the vehicle using the
mechanical key.
XHave the vehicle and SmartKey checked at aqualified specialist
workshop.
SmartKey69
Opening and closing
Z

ProblemPossible causes/consequences andMSolutions
The engine cannot be
started using the Smart-
Key.The on-board voltage is too low.
XSwitch off non-essential consumers, e.g. seat heating or interior
lighting, and try to start the engine again.
If this does not work:
XCheck the starter battery and charge it if necessary (Ypage 253).
or
XJump-start the vehicle (Ypage 253).
or
XConsult aqualified specialist workshop.
The engine cannot be
started using KEYLESS-
GO. The SmartKey is in
the vehicle.The vehicle is locked.
XUnlock the vehicle and try to start the vehicle again.
The SmartKey battery is discharged or nearly discharged.
XCheck the SmartKey battery (Ypage 68) and replace it if necessary
(Ypage 68).
If this does not work:
XStart your vehicle with the SmartKey in the ignition lock.
There is interference from apowerful source of radio waves.
XStart your vehicle with the SmartKey in the ignition lock.
You have lost aSmart-
Key.XHave the SmartKey deactivated at aqualified specialist workshop.
XReport the loss immediately to the vehicle insurers.
XIf necessary, have the locks changed as well.
You have lost the
mechanical key.XReport the loss immediately to the vehicle insurers.
XIf necessary, have the locks changed as well.
The side windows cannot
be opened or closed
using the convenience
opening/closing fea-
ture.The SmartKey battery is discharged or nearly discharged.
XCheck the SmartKey battery (Ypage 68) and replace it if necessary
(Ypage 68).
Doors
Important safety notes
GWARNING
If children are left unsupervised in the vehicle,
they could:
Roperate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
Rrelease the parking brake
Rshift the automatic transmission out of park
position P
Rstart the engine
There is arisk of an accident and injury.
Never leave children or animals unattended in
the vehicle.
70Doors
Opening and closing