2004 MERCEDES-BENZ S55AMG trunk

90 Controls in detailLocking and unlockingRestoring to factory setting
Press and hold buttonsŒ and‹
simultaneously for about six seconds
until battery check lamp5 flashes
twice.
Unlocking and opening the trunk lid
You can unlock and open the trunk lid sep-
arately.
A minimum height clearance of 6 ft.
(1.85 m) is required to open the trunk lid.

Press and hold button Š until trunk
unlocks and begins to open.The trunk can also be opened from its in-
side in an emergency, see “Trunk lid emer-
gency release” (
page 104).
!If you can no longer lock or unlock the
vehicle with the SmartKey, then the
batteries in the SmartKey are dis-
charged, the SmartKey is malfunction-
ing or the vehicle battery is drained.

Check the batteries in the
SmartKey and replace them if nec-
essary (
page 349).


Use the mechanical key to unlock
the doors (
page 348) and the
trunk lid (
page 349) as required.


Have the vehicle battery and the
battery connections checked.


Use the mechanical key to lock the
doors (
page 348) and the trunk
lid (
page 349) as required.
If the SmartKey is malfunctioning, con-
tact an authorized Mercedes-Benz Cen-
ter.
!The trunk lid swings open upwards au-
tomatically. Always make sure that
there is sufficient overhead clearance.
Vehicles with trunk lid opening/closing
system: To stop the opening proce-
dure, press buttonŠ. The trunk lid
stops moving.
iIf the trunk lid does not open, it is still
locked separately (if applicable)
(page 105).
If the vehicle was previously centrally
locked, the trunk lid will lock automati-
cally when closed. The turn signals will
flash three times to confirm locking.

91 Controls in detail
Locking and unlocking
Checking the batteries
Press button‹ orŒ.
Battery check lamp5 comes on brief-
ly to indicate that the SmartKey batter-
ies are in order.Loss of SmartKey or mechanical key
If you lose a SmartKey or mechanical key,
you should do the following:

Have the SmartKey deactivated by an
authorized Mercedes-Benz Center.

Report the loss of the SmartKey or the
mechanical key immediately to your
car insurance company.

If necessary, have the mechanical lock
replaced.
Your authorized Mercedes-Benz Center
will be glad to supply you with a replace-
ment.
SmartKey with KEYLESS-GO*
Vehicles equipped with KEYLESS-GO come
with two SmartKeys with KEYLESS-GO,
each with remote control and a removable
mechanical key. The locking tabs for the
mechanical key portion of the two Smart-
Keys are a different color to help distin-
guish each SmartKey unit.
The KEYLESS-GO function is integrated
into the SmartKey. On these vehicles, the
validity of the SmartKey with KEYLESS-GO
is checked every time you grasp a door
handle.
If the SmartKey with KEYLESS-GO is valid,
your vehicle unlocks:

the doors


the trunk lid


the fuel filler flap
!If battery check lamp5 does not
come on briefly during check, then the
SmartKey batteries are discharged.
Replace the batteries (
page 349).
You can obtain the required batteries
at any authorized Mercedes-Benz Cen-
ter.
iIf the batteries are ckecked within sig-
nal range of the vehicle, pressing the
button‹ orŒ will lock or unlock
the vehicle accordingly.

92 Controls in detailLocking and unlockingSmartKey with KEYLESS-GO1‹ Lock button
2Š Unlock button for trunk lid
3Locking tab for mechanical key
4ΠUnlock button
5Battery check lamp
6Â Panic button (
page 76)
For more information on using the
SmartKey buttons, see “SmartKey”
(
page 88).Important notes on using KEYLESS-GO


You can also use the SmartKey with
KEYLESS-GO like a normal
SmartKey (
page 88).


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


Always carry the SmartKey with
KEYLESS-GO with you.
Warning!
G
When leaving the vehicle, always remove the
SmartKey from the starter switch, take the
SmartKey with KEYLESS-GO* with you and
lock your vehicle. Do not leave children un-
attended in the vehicle, or with access to an
unlocked vehicle. Unsupervised use of vehi-
cle equipment may cause an accident
and/or serious personal injury.!To prevent possible malfunction, avoid
exposing the SmartKey with
KEYLESS-GO to high levels of electro-
magnetic radiation.
iIf the vehicle has been parked for a
longer period of time, you must pull the
door handle in order to activate the
KEYLESS-GO function.
You can also close the power windows
(page 198) and sliding/pop-up roof
(page 202) using the SmartKey with
KEYLESS-GO.

93 Controls in detail
Locking and unlocking


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.


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.


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 dep-
resed. Do not depress the accelera-
tor.


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


This does not apply if, after starting, the
gear selector lever is still in positionP
and the SmartKey is then inserted in
the starter switch. The SmartKey will
then have priority over the SmartKey
with KEYLESS-GO and the vehicle’s
electrical system will operate accord-
ing 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 switched on (e.g. if passenger
exits the vehicle with the SmartKey
with KEYLESS-GO), the message
KEY
NOT RECOGNIZED!
will appear in the
multifunction display.
Find the SmartKey or change its
present location immediately
(e.g. place it on the front 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.

94 Controls in detailLocking and unlockingFactory setting
Global unlocking
Grasp the door handle.
The vehicle will lock again automatically
within approximately 40 seconds of un-
locking if neither door nor trunk is opened.
Global locking

Press lock button at door handle
(page 55) or trunk (
page 95).Selective setting
If you frequently travel alone, you may wish
to reprogram the SmartKey with
KEYLESS-GO so when you, grasp the driv-
er’s door handle only the driver’s door and
the fuel filler flap unlocks.

Press and hold buttonsŒ and‹
simultaneously for about six seconds
until battery check lamp5 flashes
twice.
The SmartKey with KEYLESS-GO will
then function as follows:
Unlocking the driver’s door
Grasp the driver’s door handle.
Global unlocking

Grasp the door handle on the pas-
senger side.
Global locking

Press lock button at door handle or
trunk lid.Restoring to factory setting

Press and hold buttonsŒ and‹
simultaneously for about six seconds
until battery check lamp5 flashes
twice.
iThe vehicle could inadvertently be un-
locked if the SmartKey with
KEYLESS-GO is within 3 ft. (1 m) of the
vehicle and:

the door handle is splashed with
water, or


you attempt to clean the door
handle
!If you can not lock or unlock the vehicle
with the SmartKey with KEYLESS-GO,
then the battery in the SmartKey is dis-
charged, the SmartKey with
KEYLESS-GO is malfunctioning or the
vehicle battery is drained.

Check the battery in the SmartKey
with KEYLESS-GO and replace them
if necessary (
page 349).


Use the mechanical key to unlock
the doors (
page 348) and the
trunk lid (if applicable)
(
page 349) as required.


Have the vehicle battery and the
battery connections checked.

95 Controls in detail
Locking and unlocking
Locking the vehicle
1Vehicle lock button

Press vehicle lock button1.
or

Press the lock button at the outside
door handle (
page 55).
or

Vehicles with trunk lid opening/closing
system*, press the KEYLESS-GO lock-
ing/closing switch at the trunk
(page 103).
The vehicle locks. The turn signals
flashes three times to confirm locking.Checking the battery

Press button‹ orŒ.
Battery check lamp5 comes on brief-
ly to indicate that the SmartKey battery
is in order.


Use the mechanical key to lock the
doors (
page 348) and the trunk
lid (
page 349) as required.
If the SmartKey with KEYLESS-GO is
malfunctioning, contact an authorized
Mercedes-Benz Center.
!If battery check lamp5 does not
come on briefly during check, the
SmartKey battery is discharged.
Replace the battery (
page 349).
You can obtain the required battery at
any authorized Mercedes-Benz Center.
iIf the battery is ckecked within signal
range of the vehicle, pressing the
button‹ orŒ will lock or unlock
the vehicle accordingly.

97 Controls in detail
Locking and unlocking
Opening the trunk lid from the outside
A minimum height clearance of 6 ft.
(1.85 m) is required to open the trunk lid.
The trunk lid lock button is located in the
rear license plate recess.
1Trunk lid lock button
Press the outer left-hand side of trunk
lid button1.
The trunk lid opens.The trunk can also be opened using the
SmartKey (
page 90) or from its inside in
an emergency, see “Trunk lid emergency
release” (
page 104).
Opening the trunk lid from the inside
You can open the trunk from the inside if
the vehicle is stationary.
A minimum height clearance of 6 ft.
(1.85 m) is required to open the trunk lid.
The switch is located on the driver’s door.
1Indicator lamp
2Remote trunk lid release switch
Pull remote trunk lid switch2 until
trunk begins to open.
The trunk lid opens. The indicator
lamp1 comes on and remains lit until
the trunk is closed.
!The trunk lid swings open upwards au-
tomatically. Always make sure that
there is sufficient overhead clearance.
Vehicles with trunk lid opening/closing
system*: To stop the opening proce-
dure, press buttonŠ. The trunk lid
stops moving.iIf the trunk lid does not open, it is still
locked separately (if applicable)
(page 349).
Vehicles without KEYLESS-GO*: The
vehicle must be unlocked (
page 88).
Vehicles with KEYLESS-GO*: If the ve-
hicle was previously centrally locked,
the trunk lid will lock automatically af-
ter closing it (
page 98). The turn sig-
nals will flash three times to confirm
locking.

98 Controls in detailLocking and unlockingThe trunk can also be opened using the
SmartKey (
page 90) or from its inside in
an emergency, see “Trunk lid emergency
release” (
page 104).
Closing the trunk lid
1Handle
Lower trunk lid by pulling firmly on
handle1.
2Extending handle

Push the trunk lid down gently at the
extending handle2 until it engages
into the lock.
The extending handle2 is retracted
after a few seconds.
The power closing assist automatically en-
sures that the lid is pulled closed com-
pletely (
page 106).
!The trunk lid swings open upwards au-
tomatically. Always make sure that
there is sufficient overhead clearance.iIf the trunk lid does not open, it is still
locked separately (if applicable)
(page 349).
If the vehicle was previously centrally
locked, the trunk lid will lock automati-
cally when closed (
page 98). The
turn signals will flash three times to
confirm locking.
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.