2008 MERCEDES-BENZ SL55AMG trunk

109 Controls in detail
Locking and unlocking
Important notes on using KEYLESS-GO

You can also use the SmartKey with
KEYLESS-GO like a normal SmartKey
(
page 104).

You can combine KEYLESS-GO func-
tions with normal SmartKey functions
(e.g. unlocking with KEYLESS-GO and
locking with the ‹button).

Always carry the SmartKey with
KEYLESS-GO with you.

Never store the SmartKey with
KEYLESS-GO together with:

Electronic items such as a cellular
phone or another SmartKey with
KEYLESS-GO

Metallic objects such as coins or
metal foil
Doing so could impair the function of
the KEYLESS-GO system.
iCanada only:
This device complies with RSS-210 of Industry
Canada. Operation is subject to the following
two conditions:
(1) This device may not cause interference, and
(2) this device must accept any interference
received, including interference that may
cause undesired operation of the device.
Any unauthorized modification to this device
could void the user’s authority to operate the
equipment.
iYou can also close the power windows
(
page 201) and the retractable hardtop using
the SmartKey with KEYLESS-GO (
page 206).
iWhen you unlock the vehicle, the
electro-hydraulic brake system is activated.
!If you cannot lock or unlock the vehicle with
the SmartKey with KEYLESS-GO, then the
batteries in the SmartKey are discharged, the
SmartKey with KEYLESS-GO is malfunctioning or
the vehicle battery is drained.

Check the batteries in the SmartKey with
KEYLESS-GO (
page 113) and replace
them if necessary (
page 407).

Use the mechanical key to unlock the
driver’s door (
page 403) and the
trunk (
page 404).

Have the vehicle batteries and their
connections checked (
page 427).

Use the mechanical key to lock or unlock the
doors (
page 405).
If the SmartKey with KEYLESS-GO is malfunc-
tioning, contact Roadside Assistance or an
authorized Mercedes-Benz Center.

110 Controls in detail
Locking and unlocking

To lock or unlock the vehicle, the
SmartKey with KEYLESS-GO must be
located outside the vehicle within ap-
proximately 3 ft (1 m) of a door or the
trunk.

If the vehicle has been parked for more
than 72 hours, you must pull an outside
door handle in order to activate the
KEYLESS-GO function.

In order to start the engine with the
SmartKey with KEYLESS-GO:

The SmartKey with KEYLESS-GO
must be located in the vehicle.

All doors must be closed.

The brake pedal must be firmly
depressed. Do not depress the
accelerator.

If you have started the engine with the
KEYLESS-GO start/stop button
(
page 41), you can only turn it off
again with this button, even if you have
put the SmartKey in the starter switch
in the meantime.

This does not apply if, after starting, the
selector lever is still in positionP and
the SmartKey is then inserted in the
starter switch. The SmartKey will then
have priority over the KEYLESS-GO
function and the vehicle’s electrical
system will operate according to the
position of the SmartKey in the starter
switch, even stopping the engine.

If the SmartKey with KEYLESS-GO is
positioned farther away from the vehi-
cle, the system may no longer recog-
nize the SmartKey with KEYLESS-GO.
The vehicle then cannot be locked or
the engine started via the KEYLESS-GO
system.

If the SmartKey with KEYLESS-GO is re-
moved from the vehicle while the en-
gine is running (e.g. if passenger exits
the vehicle with the SmartKey with
KEYLESS-GO), the message
Key Not
Detected
will appear in the multifunc-
tion display while driving off.Find the SmartKey or change its
present location immediately (e.g.
place it on the passenger seat or insert
it in shirt pocket).

Remember that the engine can be
started by anyone with a SmartKey
with KEYLESS-GO that is left inside the
vehicle. If you leave the SmartKey with
KEYLESS-GO behind when exiting and
locking the vehicle, the message
Key
Detected In Vehicle
will appear in the
multifunction display.

111 Controls in detail
Locking and unlocking
Factory settingGlobal unlocking
Grasp an outside door handle.

All turn signal lamps flash once.

An acoustic warning sounds once.

The locking knobs in the doors
move up.

The anti-theft alarm system is
disarmed.
The vehicle will lock again automatically
and rearm the alarm system within approx-
imately 40 seconds of unlocking if neither
a door nor the trunk is opened. Global locking
Press lock button on an outside door
handle (
page 66).
With the trunk and both doors closed:

All turn signal lamps flash three
times.

An acoustic warning sounds three
times.

The locking knobs in the doors
move down.

The anti-theft alarm system is
armed.
iWhen unlocking or locking the vehicle with
KEYLESS-GO, an acoustic signal sounds. The sig-
nal is activated at the factory. If you wish to de-
activate the feature or adjust its signal volume,
contact an authorized Mercedes-Benz Center.
iThe vehicle could inadvertently unlock if the
SmartKey with KEYLESS-GO is within 3 ft (1 m)
of the vehicle and

an outside door handle is splashed with
water
or

you attempt to clean an outside door handle
iVehicles with trunk opening/closing
system*: You can also lock the vehicle using the
the KEYLESS-GO locking/closing switch
(
page 119).

112 Controls in detail
Locking and unlocking
Selective setting
If you frequently travel alone, you may wish
to reprogram the SmartKey with
KEYLESS-GO so that grasping an outside
door handle only unlocks the driver’s door,
interior lockable storage compartments
and the fuel filler flap.
Press and hold buttons Œ and ‹
simultaneously for about 5 seconds
until battery check lamp5
(
page 108) flashes twice.
The SmartKey with KEYLESS-GO will
then function as follows:Unlocking the driver’s door and fuel fill-
er flap
Grasp the driver’s door handle.

All turn signal lamps flash once.

An acoustic warning sounds once.

The locking knob in the driver’s
door moves up.

The anti-theft alarm system is
disarmed.
Global unlocking
Grasp the door handle on the passen-
ger side.

All turn signal lamps flash once.

An acoustic warning sounds once.

The locking knobs in the doors
move up.

The anti-theft alarm system is
disarmed.Global locking
Press lock button on an outside door
handle.
With all doors and the trunk closed:

All turn signal lamps flash three
times.

An acoustic warning sounds three
times.

The locking knobs in the doors
move down.

The anti-theft alarm system is
armed.
Restoring to factory setting
Press and hold buttons Œ and ‹
simultaneously for about 5 seconds
until battery check lamp5
(
page 108) flashes twice.
iVehicles with trunk opening/closing
system*: You can also lock the vehicle using
the KEYLESS-GO locking/closing switch
(
page 119).

114 Controls in detail
Locking and unlocking
Opening the trunk
You can open the trunk if the vehicle is sta-
tionary and the retractable hardtop is fully
opened or closed.
A minimum height clearance of
6.2 ft (1.88 m) is required to open the
trunk lid.!A side window will not work if it is blocked
with ice or if the battery needs charging. If you
cannot shut a door, do not force it or you could
damage the door or the side window.
Fix whatever is affecting the window before
trying to shut the door.
iIf you hear a warning signal, you have forgot-
ten to switch off the low beam headlamps or the
parking lamps before opening the driver’s door.
In addition, the message
Lights Are Still
On
appears in the multifunction display.
Switch off the low beam headlamps or the park-
ing lamps.
If the message
Switch off lights or
remove key.
appears in the multifunction
display, remove the SmartKey from the starter
switch or switch off the automatic headlamp
mode.
!Failure to switch off the exterior lamps when
leaving the vehicle may result in a discharged
battery.
iIf the vehicle has previously been locked
with the SmartKey or KEYLESS-GO*, opening a
door from the inside will trigger the anti-theft
alarm system.
To cancel the alarm, do one of the following:

Press buttonŒ or‹on the
SmartKey.

Insert the SmartKey in the starter switch.
Vehicles with KEYLESS-GO*:

Grasp an outside door handle.
The SmartKey with KEYLESS-GO* must be
within 3 ft (1 m) of the vehicle.

Press the KEYLESS-GO* start/stop button
(
page 41).
The SmartKey with KEYLESS-GO* must be
inside the vehicle.
Warning!G
Make sure the trunk is closed when the
engine is running and while driving.
Among other dangers, deadly carbon
monoxide (CO) gases may enter vehicle
interior resulting in unconsciousness and
death.
iIf the trunk lid does not open, the trunk lid is
still locked separately (
page 120).

115 Controls in detail
Locking and unlocking
Opening the trunk from the outside
1Trunk lid handle
Vehicles without trunk opening/closing
system*
Press button Š on the SmartKey or
SmartKey with KEYLESS-GO*.
or
Pull on handle1.
In vehicles without KEYLESS-GO*: The
vehicle must be unlocked.
Lift the trunk lid.Vehicles with trunk opening/closing
system*
Press and hold button Š on the
SmartKey or SmartKey with
KEYLESS-GO* until trunk unlocks and
begins to open.
or
Pull on handle1.
Vehicles without KEYLESS-GO*: The
vehicle must be unlocked.
iTo facilitate trunk loading and unloading
when the hardtop is retracted, you can raise the
hardtop from its storage position in the trunk
using the load assist feature (
page 245). You
may also unhook the luggage cover.
Remember to re-secure the luggage cover after
loading/unloading the trunk. Otherwise you will
not be able to lower the retractable hardtop.
!The trunk lid swings open upwards automat-
ically. Always make sure that there is sufficient
overhead clearance.
!To stop the opening procedure, press
buttonŠ on the SmartKey or SmartKey with
KEYLESS-GO* or pull the trunk lid handle.

116 Controls in detail
Locking and unlocking
Opening the trunk from the inside
Vehicles without trunk opening/closing
system*
1Remote trunk opening switch
2Indicator lamp
Pull switch1 until the trunk begins to
open.
The trunk lid unlocks. Indicator
lamp2 comes on and remains lit until
the trunk is closed again.
Lift the trunk lid.Vehicles with trunk opening/closing
system*
1Remote trunk opening/closing* switch
2Indicator lamp
Pull and hold switch1 until the trunk
unlocks and begins to open.
Indicator lamp2 comes on and re-
mains lit until the is trunk closed again.
Release switch1.
To interrupt the opening procedure:
Press or pull switch1.
Closing the trunk
!The trunk lid swings open upwards automat-
ically. Always make sure that there is sufficient
overhead clearance.
Warning!G
Make sure the trunk is closed when the
engine is running and while driving.
Among other dangers, deadly carbon
monoxide (CO) gases may enter vehicle
interior resulting in unconsciousness and
death.
iWhen the hardtop is retracted, it must be
completely lowered in the trunk before the trunk
can be closed (
page 204).
iDo not place the SmartKey in the open
trunk. You may lock yourself out.
iIf the vehicle was previously centrally
locked, the trunk will lock automatically after
closing it. All turn signal lamps flash three times
and an acoustic signal sounds three times to
confirm locking.

117 Controls in detail
Locking and unlocking
Closing the trunk from the outside
manually
1Handle
Lower trunk lid by pulling firmly on
handle1.
Close trunk lid with hands placed flat
on trunk lid.
The power closing assist automatically
ensures that the lid is pulled closed
completely (
page 121).Closing the trunk from the inside
automatically*
Vehicles with KEYLESS-GO*: To prevent a possi-
ble inadvertent lockout, the trunk will open auto-
matically if a SmartKey with KEYLESS-GO is
recognized inside the vehicle or in the trunk.
The vehicle is only locked when the turn signals
flash three times and an acoustic signal sounds
three times. If you are carrying a second
SmartKey with KEYLESS-GO with you, you can
still lock the vehicle.
Warning!G
To prevent possible personal injury, always
keep hands and fingers away from the trunk
lid opening when closing the trunk. Be espe-
cially careful when small children are
around.
When leaving the vehicle, always remove the
SmartKey or SmartKey with KEYLESS-GO*
from the starter switch, take it with you, and
lock the vehicle. Do not leave children
unattended in the vehicle, or with access to
an unlocked vehicle. A child’s unsupervised
access to a vehicle could result in an
accident and/or serious personal injury.
Warning!G
Maintain sight of trunk area while operating
door mounted switch. Monitor the closing
procedure carefully to make sure no one is
in danger of being injured.
To interrupt the closing procedure, release
the door mounted remote trunk open-
ing/closing* switch again.
Even with the SmartKey or SmartKey with
KEYLESS-GO* removed from the starter
switch or the SmartKey with KEYLESS-GO*
removed from the vehicle, the remote trunk
opening/closing* switch can be operated.
Therefore, do not leave children unattended
in the vehicle, or with access to an unlocked
vehicle. A child’s unsupervised access to a
vehicle could result in an accident and/or
serious personal injury.