MERCEDES-BENZ S-COUPE 2015 Manual Online

SmartKey functions
:&To lock the vehicle
;FTo open/close the trunk lid
=%To unlock the vehicle
X To unlock centrally: press button=.
If you do not open the vehicle within
approximately 40 seconds of unlocking:
R the vehicle is locked again.
R the anti-theft alarm system is armedagain.
X To lock centrally: press button:.
The SmartKey centrally locks/unlocks:
R the doors
R the trunk lid
R the fuel filler flap
The turn signals flash once when unlocking
and three times when locking.
iYou can also set an audible signal to con-
firm that the vehicle has been locked. The
audible signal can be activated and deacti-
vated using COMAND (see the Digital Oper- ating Instructions).
iWhen the surround lighting is activated in
COMAND, it comes on when it is dark after
the vehicle is unlocked using the remote
control. Information on activating and
deactivating the surround lighting can be
found in the Digital Operator's Manual.
X To open the trunk lid automatically
from outside the vehicle: press and hold
button ;until the trunk lid opens.
KEYLESS-GO
General notes
Bear in mind that the engine can be started by any of the vehicle occupants if there is a
SmartKey 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.
The driver's door and the door at which the
handle is used, must both be closed. The
SmartKey must be outside the vehicle. When
locking or unlocking with KEYLESS-GO, the
distance between the SmartKey and the cor-
responding 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 starting the engine
R whilst driving
R when using HANDS-FREE ACCESS
R when the external door handles aretouched
R during convenience closing
SmartKey79
Opening and closing
Z

XTo unlock the vehicle: touch the inner
surface of the door handle.
X To lock the vehicle: touch sensor sur-
face :or; .
Make sure that you do not touch the inner
surface of the door handle.
X Convenience closing feature: touch
recessed sensor surface ;for an exten-
ded period.
Deactivating
If you do not intend to use the vehicle for a
longer period of time, you can deactivate KEY-
LESS-GO. The SmartKey will then use very lit-
tle power, thereby conserving battery power.
For the purposes of activation/deactivation,
the vehicle must not be nearby. X To deactivate: press the&button on
the SmartKey twice in rapid succession.
The battery check lamp of the SmartKey
lights up twice briefly and KEYLESS-GO is
deactivated.
X To activate: press any button on the
SmartKey or insert the SmartKey into the
ignition lock.
KEYLESS-GO and all of its associated fea-
tures are available again.
KEYLESS-GO start function
Bear in mind that the engine can be started by any of the vehicle occupants if there is a
SmartKey in the vehicle.
Changing the settings of the locking
system
You can find information about this in the
Digital Operator's Manual.
Mechanical key
General notes
If the vehicle can no longer be locked or
unlocked with the SmartKey or KEYLESS-GO, use the mechanical key.
If you use the mechanical key to unlock and
open the driver's door, the anti-theft alarm
system will be triggered. Switch off the alarm
( Y page 76).
If you unlock the vehicle using the mechanical key, the fuel filler flap will not be unlocked
automatically.
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 83)
R unlocking the trunk ( Ypage 88)
R locking the vehicle ( Ypage 83)
Inserting the mechanical key
X
Push mechanical key ;completely into
the SmartKey until it engages and release catch :is back in its basic position.
80SmartKey
Opening and closing

SmartKey battery
Important safety notes
GWARNING
Batteries contain toxic and corrosive substan- ces. If batteries are swallowed, it can result in
severe health problems. There is a risk of fatal injury.
Keep batteries out of the reach of children. If
a battery is swallowed, seek medical attention immediately.
HEnvironmental note
Batteries contain dangerous
substances. It is against the
law to dispose of them with
the household rubbish. They
must be collected separately and recycled to protect the
environment.
Dispose of batteries in an
environmentally friendly
manner. Take discharged
batteries to a qualified spe-
cialist workshop or a special
collection point for used bat-teries.
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/
HazardousWaste/Perchlorate/ index.cfm .
Mercedes-Benz recommends that you have
the batteries replaced at a qualified specialist workshop.
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 81).
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 80).
X
Press mechanical key ;into the opening
in the SmartKey in the direction of the
arrow until battery compartment cover :
SmartKey81
Opening and closing
Z

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 first and
then press to close it.
X Insert mechanical key ;into the Smart-
Key.
X Check the function of all SmartKey buttons
on the vehicle.
Problems with the SmartKey
You can find information about this in the
Digital Operator's Manual.
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 shifting the automatic transmission out of
park position P
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.
You should preferably place luggage or loads in the trunk. Observe the loading guidelines( Y page 196).
Information in the Digital Operator's
Manual
In the Digital Operator's Manual you will find
information on the following topics: R
Unlocking and opening doors from the inside
R Centrally locking and unlocking the vehicle
from the inside
R Automatic locking feature
R Power closing
82Doors
Opening and closing

Unlocking the driver's door (mechan-
ical key)
If the vehicle can no longer be locked or
unlocked with the SmartKey or KEYLESS-GO,
use the mechanical key. X Take the mechanical key out of the Smart-
Key ( Ypage 80).
X
Insert the mechanical key into opening :
in the protective cap.
X Pull and hold the door handle.
X Pull the protective cap on the mechanical
key as straight as possible away from the
vehicle until it releases.
X Release the door handle.
XInsert the mechanical key into the lock of
the driver's door as far as it will go.
X Turn the mechanical key counter-clockwise
as far as it will go to position 1.
The locking knob pops up and the door
unlocks. X
Turn the mechanical key back and removeit.
X Insert the mechanical key into the Smart-
Key ( Ypage 80).
X Carefully press the protective cap onto the
lock cylinder until it engages and is seated firmly. Do not pull the door handle when
doing so.
If you use the mechanical key to unlock and
open the driver's door, the anti-theft alarm
system will be triggered. Switch off the alarm
( Y page 76).
Locking the vehicle (mechanical key)
If the vehicle can no longer be locked with the
SmartKey or KEYLESS-GO, use the mechani-
cal key.
X Open the driver's door.
X Close the front-passenger door and the
trunk lid.
X Press the locking button ( Ypage 82).
X Check whether the locking knob on the
front-passenger door is still visible. Press
the locking knob down by hand, if neces-sary.
X Close the driver's door.
X Take the mechanical key out of the Smart-
Key ( Ypage 80).
X
Insert the mechanical key into opening :
in the protective cap.
X Pull and hold the door handle.
Doors83
Opening and closing
Z

XPull the protective cap on the mechanical
key as straight as possible away from the
vehicle until it releases.
X Release the door handle.
XInsert the mechanical key into the lock of
the driver's door as far as it will go.
X Turn the mechanical key clockwise as far as
it will go to position 1.
The locking knob drops down and the driv- er's door is locked.
X Turn the mechanical key back and removeit.
X Make sure that the doors and the trunk lid
are locked.
X Insert the mechanical key into the Smart-
Key ( Ypage 80).
X Carefully press the protective cap onto the
lock cylinder until it engages and is seated
firmly. Do not pull the door handle when
doing so.
iIf you lock the vehicle as described above,
the fuel filler flap is not locked. The anti-
theft alarm system is not armed.
Trunk
Important safety notes
GWARNING
If objects, luggage or loads are not secured or not secured sufficiently, they could slip, tip
over or be flung around and thereby hit vehicle
occupants. There is a risk of injury, particu-
larly in the event of sudden braking or a sud-
den change in direction.
Always store objects so that they cannot be
flung around. Secure objects, luggage or
loads against slipping or tipping before the
journey.
!The trunk lid swings upwards when
opened. Therefore, make sure that there is
sufficient clearance above the trunk lid.
iYou can limit the opening angle of the
trunk lid in COMAND; see the separate
operating instructions.
iThe opening dimensions of the trunk lid
can be found in the "Vehicle data" section ( Y page 281).
Do not leave the SmartKey in the trunk. You
could otherwise lock yourself out.
You should preferably place luggage or loads
in the trunk. Observe the loading guidelines ( Y page 196).
Obstacle recognition with trunk lid
reversing feature
On vehicles with trunk lid remote closing fea-
ture, the trunk lid is equipped with automatic obstacle recognition with reversing feature. If a solid object blocks or restricts the trunk lid
when automatically opening or closing, this
procedure is stopped. If the trunk lid is stop-
ped during the closing procedure, it will open
again automatically. The automatic obstacle
recognition with reversing feature is only an
aid. It is not a substitute for your attentive-
ness when opening and closing the trunk lid.
GWARNING
The reversing feature does not react:
R to soft, light and thin objects, e.g. small fin-
gers
R over the last 1/3 in (8 mm) of the closing
movement
84Trunk
Opening and closing

This means that the reversing feature cannot
prevent someone being trapped in these sit-
uations. There is a risk of injury.
Make sure that no body parts are in close
proximity during the closing procedure.
If somebody becomes trapped:R press the Fbutton on the SmartKey, or
R pull or press the remote operating switch
on the driver's door or
R press the closing or locking button on the
trunk lid
Opening/closing automatically from outside
Important safety notes
GWARNING
Parts of the body could become trapped dur-
ing automatic closing of the trunk lid. More-
over, people, e.g. children, may be standing in the closing area or may enter the closing area
during the closing process. There is a risk ofinjury.
Make sure that nobody is in the vicinity of theclosing area during the closing process.
Use one of the following options to stop the
closing process:
R press the Fbutton on the SmartKey.
R pull or press the remote operating switch
on the driver's door.
R press the closing or locking button on the
trunk lid.
GWARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Exhaust
gases can enter the vehicle interior if the
trunk lid is open when the engine is running,
especially if the vehicle is in motion. There is a
risk of poisoning.
Always switch off the engine before opening
the trunk lid. Never drive with the trunk lidopen.
!The trunk lid swings upwards when
opened. Therefore, make sure that there is
sufficient clearance above the trunk lid.
iThe opening dimensions of the trunk lid
can be found in the "Vehicle data" section ( Y page 281).
Opening
You can open the trunk lid automatically
using the SmartKey. X
Press and hold the Fbutton on the
SmartKey until the trunk lid opens.
Closing
You can close the trunk lid automatically
using the SmartKey or the closing button in
the trunk lid.
X Press and release closing button :on the
trunk lid.
or X If the SmartKey is located in the immediate
vicinity of the vehicle: press the Fbut-
ton on the SmartKey.
You can release the button as soon as the
trunk lid starts to close.
X To stop the closing process:
R Press the Fbutton on the SmartKey,
or
R Press closing button :or locking but-
ton ;on the trunk lid, or
Trunk85
Opening and closing
Z

RPress the remote operating switch on the
driver's door, or
R In vehicles with HANDS-FREE ACCESS:
kick into the sensor detection range
under the bumper with your foot.
iIf the F button on the SmartKey is
pressed or HANDS-FREE ACCESS is initi-
ated after the closing process is stopped,
the trunk lid opens.
Vehicles with trunk lid remote closing
feature and KEYLESS-GO: when all the
doors are closed, you can simultaneously
close the trunk lid and lock the vehicle. The
key must be located to the rear of the vehicle. X Press and release locking button ;on the
trunk lid.
If a KEYLESS-GO key is detected outside
the vehicle, the trunk lid closes and the
vehicle locks.
iIf KEYLESS-GO detects a SmartKey in the
trunk, the trunk lid opens again after it is closed.
If KEYLESS-GO detects a second SmartKey outside the vehicle, the trunk lid remains closed.
HANDS-FREE ACCESS
Important safety notes
GWARNING
The vehicle's exhaust system may be very hot. You could burn yourself by touching the
exhaust system if you use HANDS-FREE
ACCESS. There is a risk of injury. Always
ensure that you only make the kicking move-
ment within the detection range of sensors.
!If the SmartKey is within the rear detec-
tion range of KEYLESS-GO, the following
situations, for example, could lead to the
unintentional opening of the trunk:
R using a car wash
R using a power washer Make sure that the SmartKey is at least
10 ft (3 m) away from the vehicle.
General notes
With KEYLESS-GO and HANDS-FREE
ACCESS, you can open or close the trunk lid
or stop the procedure without using your
hands. This is useful if you have your hands
full. To do this, make a kicking movement
under the bumper with your foot.
Observe the following points:
R Carry your KEYLESS-GO key about your
person. The KEYLESS-GO key must be in
the rear detection range of the vehicle.
R When making the kicking movement, make
sure that you are standing firmly on the
ground and that there is sufficient clear-
ance to the rear of the vehicle. You could
otherwise lose your balance e.g. on ice.
R Always ensure that you only make the kick-
ing movement within the detection range of sensors :.
R Stand at least 12 in (30 cm) away from the
rear area while doing so.
R Do not come into contact with the bumper
while making the kicking movement. Oth-
erwise, the sensors may not function cor-
rectly.
R HANDS-FREE ACCESS does not function
when the engine is started.
R If a KEYLESS-GO key is within the rear
detection range of KEYLESS-GO, HAND-
FREE ACCESS could be triggered. The trunk
86Trunk
Opening and closing

lid could thus be opened or closed unin-
tentionally, for example, if you:- sit on the edge of the trunk.
- set something down or lift something up
behind the vehicle.
- polish the rear of the vehicle.
Do not carry the KEYLESS-GO key about
your person in these situations or in situa-
tions similar to these. This will prevent the
unintentional opening/closing of the trunk.
R Dirt caused by road salt around sensors :
may restrict functionality.
R Using the HANDS-FREE ACCESS with a
prosthetic leg may restrict functionality.
Operation
X To open/close: kick into sensor detection
range :under the bumper with your foot.
You will hear a warning tone while the trunk lid is opening or closing.
X If the trunk lid does not open after sev-
eral attempts: wait at least ten seconds
then move your leg under the bumper once
again.
iIf you hold your foot under the bumper for
too long, the trunk lid does not open or
close. Repeat the leg movement more
quickly if this occurs.
To stop the opening or closing procedure: R kick with your leg in the sensor detection
range :under the bumper or
R press the closing button in the trunk lid or
R press the Fbutton on the SmartKey If the trunk lid closing procedure has been
stopped:
R move your foot under the bumper again and
the trunk lid will open.
If the trunk lid opening procedure has been
stopped:
R move your foot under the bumper again and
the trunk lid will close.
Opening/closing automatically from inside
Important safety notes
GWARNING
Parts of the body could become trapped dur-
ing automatic closing of the trunk lid. More-
over, people, e.g. children, may be standing in the closing area or may enter the closing area
during the closing process. There is a risk of
injury.
Make sure that nobody is in the vicinity of theclosing area during the closing process.
Use one of the following options to stop the
closing process:
R press the Fbutton on the SmartKey.
R pull or press the remote operating switch
on the driver's door.
R press the closing or locking button on the
trunk lid.
GWARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Exhaust
gases can enter the vehicle interior if the
trunk lid is open when the engine is running,
especially if the vehicle is in motion. There is a
risk of poisoning.
Always switch off the engine before opening
the trunk lid. Never drive with the trunk lid
open.
!The trunk lid swings upwards when
opened. Therefore, make sure that there is
sufficient clearance above the trunk lid.
Trunk87
Opening and closing
Z

iThe opening dimensions of the trunk lid
can be found in the "Vehicle data" section ( Y page 281).
Opening and closing
You can open and close the trunk lid from the
driver's seat when the vehicle is stationary
and unlocked.
X To open: pull remote operating switch for
trunk lid :until the trunk lid opens.
X To close: press remote operating switch
for trunk lid :until the trunk lid is com-
pletely closed.
Locking the trunk separately
You can lock the trunk separately. If you then
unlock the vehicle centrally, the trunk
remains locked and cannot be opened.
Activating the function to lock the trunk sep- arately:
X Close the trunk lid.
X Open the glove box.
X Push the switch to position ;.
If the vehicle is unlocked centrally, the
trunk remains locked.
iYou can also lock the glove box
( Y page 197).
Deactivating the function to lock the trunk separately:
X Open the glove box.
X Push the switch to position :.
If the vehicle is unlocked centrally, the
trunk will also be unlocked.
Unlocking the trunk (mechanical key)
!
The trunk lid swings upwards when
opened. Therefore, make sure that there is sufficient clearance above the trunk lid.
If the trunk lid can no longer be unlocked: R using the SmartKey, or
R using HANDS-FREE ACCESS, or
R using the remote operating switch in the
door control panel:
Use the emergency release.
X Take the mechanical key out of the Smart-
Key ( Ypage 80).
X Fold down the rear seat armrest.
XPull handle :and fold down cover ;.
88Trunk
Opening and closing