2015 MERCEDES-BENZ SLK-CLASS ROADSTER Owners Manual

Useful information..............................72
SmartKey ............................................. 72
Doors .................................................... 78
Trunk .................................................... 80
Side windows ...................................... 83
Roof ...................................................... 87
71
Opening and closing

Useful information
iThis Operator's Manual describes all
models and all standard and optional equip- ment of your vehicle available at the time of
publication of the Operator's Manual.
Country-specific differences are possible.
Please note that your vehicle may not be
equipped with all features described. This
also applies to safety-related systems and
functions.
iRead the information on qualified special-
ist workshops ( Ypage 25).
SmartKey
Important safety notes
GWARNING
If children are left unsupervised in the vehicle,
they could:
R open the doors, thus endangering other
people or road users.
R get out and disrupt traffic.
R operate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
R release the parking brake.
R shift the automatic transmission out of park
position P or shift manual transmission into
neutral.
R start the engine.
There is a risk of an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never leave children or animals unattended in the
vehicle. Always keep the SmartKey out of
reach of children.
GWARNING
If you attach heavy or large objects to the
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 objects to the
SmartKey. Remove any bulky key rings before
inserting the SmartKey into the ignition lock.
!Keep the SmartKey away from strong
magnetic fields. Otherwise, the remote
control function could be affected.
Strong magnetic fields can occur in the
vicinity of powerful electrical installations.
Do not keep the SmartKey: R with electronic devices, e.g. a mobile
phone or another SmartKey
R with metallic objects, e.g. coins or metalfoil
R inside metallic objects, e.g. a metal case
This can affect the functionality of the
SmartKey.
SmartKey functions
:& To lock the vehicle
;FTo unlock the trunk lid
=%To unlock the vehicle
X To unlock centrally: press the%but-
ton.
If you do not open the vehicle within
approximately 40 seconds of unlocking:
R the vehicle is locked again
R anti-theft protection is reactivated
X To lock centrally: press the&button.
72SmartKey
Opening and closing

The SmartKey centrally locks/unlocks:R the doors
R the trunk lid
R the stowage compartment in the center
console
R the 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 207).
When it is dark, the surround lighting also
comes on if it is activated in the on-board
computer ( Ypage 206).
KEYLESS-GO
General notes
Bear in mind that the engine can be started by
any of the vehicle occupants if there is a KEY- LESS-GO key in the vehicle.
Locking/unlocking centrally
You can start, lock or unlock the vehicle using
KEYLESS-GO. To do this, you only need carry
the SmartKey with you. You can combine the functions of KEYLESS-GO with those of a con-
ventional SmartKey. Unlock the vehicle by
using KEYLESS-GO, for instance, and lock it
using the &button on the SmartKey.
When locking or unlocking with KEYLESS-GO,
the distance between the key and the corre-
sponding door handle must not be greater
than 3 ft (1 m).
A check which periodically establishes a radio
connection between the vehicle and the
SmartKey determines whether a valid Smart- Key is in the vehicle. This occurs, for example:
R when the external door handles aretouched
R when starting the engine
R while the vehicle is in motion
X To unlock the vehicle: touch the inner
surface of the door handle.
X To lock the vehicle: touch sensor sur-
face :.
X Convenience closing feature: touch
recessed sensor surface ;for an exten-
ded period.
Further information on the convenience
closing feature ( Ypage 85).
X To unlock the trunk lid: pull the handle on
the trunk lid.
The vehicle only unlocks the trunk lid.
Changing the settings of the locking system
You can change the settings of the locking
system. This means only the driver's door, the
lockable stowage compartments in the vehi-
cle interior and the fuel filler flap are unlocked when the vehicle is unlocked. This is useful if
you frequently travel on your own.
X To change the setting: press and hold
down the %and& buttons simulta-
neously for approximately six seconds until the battery check lamp flashes twice( Y page 75).
iIf the setting of the locking system is
changed within the signal range of the vehi- cle, pressing the &or% button:
R locks or
R unlocks the vehicle
SmartKey73
Opening and closing
Z

The SmartKey now functions as follows:
X To unlock the driver's door: press the
% button once.
X To unlock centrally: press the%but-
ton twice.
X To lock centrally: press the&button.
The KEYLESS-GO function is changed as fol- lows: X To unlock the driver's door: touch the
inner surface of the door handle on the
driver's door.
X To unlock centrally: touch the inner sur-
face of the front-passenger door handle.
X To lock centrally: touch the outer sensor
surface on one of the door handles.
X To restore the factory settings: press
and hold down the %and& buttons
simultaneously for approximately six sec-
onds until the battery check lamp flashes
twice ( Ypage 75).
Mechanical key
General notes
If the vehicle can no longer be locked or
unlocked with the SmartKey, use the
mechanical key.
If you use the mechanical key to unlock and
open the driver's door or the trunk lid, the
anti-theft alarm system will be triggered( Y page 69).
There are several ways to turn off the alarm:
X To turn the alarm off with the SmartKey:
press the %or& button on the
SmartKey.
or
X Insert the SmartKey into the ignition lock.
or
X To deactivate the alarm with KEYLESS- GO: press the Start/Stop button in the igni-
tion lock. The SmartKey must be in the vehicle. or
X Lock or unlock the vehicle using KEYLESS-
GO. The SmartKey must be outside thevehicle.
If you unlock the vehicle using the mechanical key, the fuel filler flap will not be unlockedautomatically. X To unlock the fuel filler flap: insert the
SmartKey into the ignition lock.
Removing the mechanical key
X Push release catch :in the direction of
the arrow and at the same time remove
mechanical key ;from the SmartKey.
For further information about: R unlocking the driver's door ( Ypage 80)
R unlocking the trunk ( Ypage 82)
R locking the vehicle ( Ypage 80)
Inserting the mechanical key
X
Push mechanical key ;completely into
the SmartKey until it engages and release
catch :is back in its basic position.
SmartKey battery
Important safety notes
GWARNING
Batteries contain toxic and corrosive substan- ces. If batteries are swallowed, it can result in
74SmartKey
Opening and closing

severe health problems. There is a risk of fatalinjury.
Keep batteries out of the reach of children. If
a battery is swallowed, seek medical attention immediately.
Mercedes-Benz recommends that you have
the batteries replaced at a qualified specialist workshop.
The SmartKey batteries contain perchlorate
material, which may require special handling
and regard for the environment. National
guidelines must be observed during disposal.
In California, see www.dtsc.ca.gov/Hazard-
ousWaste/Perchlorate/index.cfm.
Checking the battery
X Press the &or% button.
The battery is working properly if battery
check lamp :lights up briefly.
The battery is discharged if battery checklamp :does not light up briefly.
X Change the battery ( Ypage 75).
iIf the SmartKey battery is checked within
the signal reception range of the vehicle,
pressing the &or% button:
R locks or
R unlocks the vehicle
iYou can get a battery at any qualified spe-
cialist workshop.
Replacing the battery
You require a CR 2025 3 V cell battery.
X Take the mechanical key out of the Smart-
Key ( Ypage 74).
X
Press mechanical key ;into the SmartKey
opening in the direction of the arrow until
battery compartment cover :opens. Do
not hold battery compartment cover :
closed while doing so.
X Remove battery compartment cover :.
X
Repeatedly tap the SmartKey against your
palm until battery =falls out.
X Insert the new battery with the positive ter-
minal facing upwards. Use a lint-free cloth
to do so.
X Make sure that the surface of the battery is
free of lint, grease and other contaminants.
X Insert the front tabs of battery compart-
ment cover :into the housing and then
press to close it.
SmartKey75
Opening and closing
Z

XInsert mechanical key ;into the Smart-
Key ( Ypage 74).
X Check the function of all SmartKey buttons
on the vehicle.
76SmartKey
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.
X Check the SmartKey battery ( Ypage 75) and replace it if nec-
essary ( Ypage 75).
If this does not work:
X Unlock ( Ypage 80) or lock ( Ypage 80) the vehicle using the
mechanical key.
The SmartKey is faulty.
X Unlock ( Ypage 80) or lock ( Ypage 80) the vehicle using the
mechanical key.
X Have the SmartKey checked at a qualified specialist workshop.
You can no longer lock
or unlock the vehicle
using KEYLESS-GO.There is interference from a powerful source of radio waves.
X Lock/unlock the vehicle using the remote control function of
the SmartKey. To do this, hold the SmartKey as close as possible
to the vehicle and press the %or& button.
If the vehicle can also not be locked/unlocked using the remote
control function: X Unlock ( Ypage 80) or lock ( Ypage 80) the vehicle using the
mechanical key.
KEYLESS-GO is malfunctioning.
X Lock/unlock the vehicle using the remote control function of
the SmartKey.
X Have KEYLESS-GO checked at a qualified specialist workshop.
If the vehicle can also not be locked/unlocked using the remote
control function: X Unlock ( Ypage 80) or lock ( Ypage 80) the vehicle using the
mechanical key.
X Have KEYLESS-GO checked at a qualified specialist workshop.
You have lost a Smart- Key.XHave the SmartKey deactivated at a qualified specialist work- shop.
X Report the loss immediately to the vehicle insurers.
X If necessary, have the locks changed as well.
You have lost the
mechanical key.XReport the loss immediately to the vehicle insurers.
X If necessary, have the locks changed as well.
SmartKey77
Opening and closing
Z

ProblemPossible causes/consequences andMSolutions
The engine can no lon-
ger be started using the
SmartKey.The on-board voltage is too low.
X Switch off non-essential consumers, e.g. seat heating or interior
lighting, and try to start the engine again.
If this does not work:
X Check the starter battery and charge it if necessary (Y page 301).
or
X Jump-start the vehicle ( Ypage 303).
or
X Consult a qualified specialist workshop.
The engine can no lon-
ger be started using
KEYLESS-GO. The
SmartKey is in the vehi-
cle.The vehicle is locked.
X Unlock the vehicle and try to start the vehicle again.
There is interference from a powerful source of radio waves.
X Start your vehicle with the SmartKey in the ignition lock.
Doors
Important safety notes
GWARNING
If children are left unsupervised in the vehicle,
they could:
R open the doors, thus endangering other
people or road users.
R get out and disrupt traffic.
R operate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
R release the parking brake.
R shift the automatic transmission out of park
position P or shift manual transmission into
neutral.
R start the engine.
There is a risk of an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never leave children or animals unattended in the
vehicle. Always keep the SmartKey out of
reach of children.
Unlocking and opening doors from
the inside
!
The side windows will not open/close if
the battery is discharged or if the side win- dows have iced up. It will then not be pos-
sible to close the door. Do not attempt to
force the door closed. You could otherwise
damage the door or the side window.
You can open a door from inside the vehicle
even if it has been locked.
If the vehicle was previously locked with the
SmartKey or with KEYLESS-GO, opening the
vehicle from the inside will activate the anti-
theft alarm system. Switch off the alarm( Y page 69).
78Doors
Opening and closing