2005 MERCEDES-BENZ SL500 Trunk lid red button

88 Safety and SecurityAnti-theft systemsImmobilizer
The immobilizer prevents unauthorized
persons from starting your vehicle.
Activating
With the SmartKey
Remove the SmartKey from the starter
switch.
With KEYLESS-GO*

Press the start/stop button on the gear
selector lever once.
The engine is turned off.

Open the driver’s door.Deactivating
With the SmartKey

Turn the SmartKey in the starter switch
to position2 (
page 36).
With KEYLESS-GO*

Switch on the ignition (
page 38).
Anti-theft alarm system
Once the alarm system has been armed, a
visual and audible alarm is triggered when
someone opens

a door


the trunk lid


the hood


a storage compartment in the rear


the glove box


the storage compartment under the
armrest
The alarm will stay on, even if the activat-
ing element (a door, for example) is imme-
diately closed.
iStarting the engine will also deactivate
the immobilizer.
In case the engine cannot be started
(yet the vehicle’s battery is charged),
the system is not operational. Contact
an authorized Mercedes-Benz Center
or call 1-800-FOR-MERCedes (in the
USA), or 1-800-387-0100 (in Canada).

89 Safety and Security
Anti-theft systems
The alarm system will also be triggered
when

someone attempts to raise the vehicle


unlocking and opening the driver’s
door with the mechanical key


someone opens a door from the inside
if the vehicle was locked from the out-
side with the SmartKey


someone opens the trunk lid with the
emergency release buttonArming the alarm system
The alarm system is armed after locking
the vehicle with the SmartKey or
KEYLESS-GO*. The turn signal lamps flash
three times to indicate that the alarm sys-
tem is activated. The ‹indicator lamp
in the central locking switch (
page 29)
begins to flash after arming the alarm sys-
tem.Disarming the alarm system
The alarm system is disarmed when you
unlock your vehicle with the SmartKey or
KEYLESS-GO*. The turn signal lamps flash
once to indicate that the alarm system is
deactivated.
iIf the alarm stays on for more than
30 seconds, a call to the Response
Center is initiated automatically by the
Tele Aid system (
page 239) provided
Tele Aid service was subscribed to and
properly activated, and that necessary
cellular service and GPS coverage are
available.
iIf the turn signal lamps do not flash
three times, a door or the trunk lid may
not be properly closed.
Close the respective element and lock
the vehicle again.
iThe alarm system will rearm automati-
cally again after approximately 40 sec-
onds if no door was opened.

95 Controls in detail
Locking and unlocking
SmartKey with remote control1‹Lock button
2Š Unlock button for the trunk lid
3Mechanical key locking tab
4ΠUnlock button
5Battery check lamp
6Â Panic button (
page 78)
Warning!
G
When leaving the vehicle, always remove the
SmartKey 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. It is possible
for children to open a locked door from the
inside, which could result in an accident
and/or serious injury.!To prevent possible malfunction, avoid
exposing the SmartKey to high levels of
electromagnetic radiation.
iUSA only:
This device complies with Part 15 of
the FCC Rules. Operation is subject to
the following two conditions:
(1) This device may not cause harmful
interference, and
(2) this device must accept any inter-
ference received, including interfer-
ence that may cause undesired
operation.
Any unauthorized modification to this
device could void the user’s authority
to operate the equipment.

98 Controls in detailLocking and unlockingUnlocking the trunk
You can unlock the trunk separately.
A minimum height clearance of
6.2 ft (1.88 m) is required to open the
trunk lid.
Press and hold button Š on the
SmartKey until trunk unlocks.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 to your car insurance
company immediately.

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 controls and a remov-
able mechanical key.
The locking tabs for the mechanical key
portion of the two SmartKeys with
KEYLESS-GO are a different color to help
distinguish each SmartKey with
KEYLESS-GO unit.
The function of the SmartKey overrules the
KEYLESS-GO function.
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.
iIf 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.

104 Controls in detailLocking and unlocking
Global locking using the lock button at
trunk lid
1Lock button at trunk lid

Press lock button 1 at trunk lid.
All turn signals flash three times. The
locking knobs in the doors move down.
The anti-theft alarm system is armed.


Use the mechanical key to unlock
the driver’s door (
page 374).


Have the vehicle batteries and their
connections checked
(page 401).


Use the mechanical key to lock or
unlock the doors (
page 376).
If the SmartKey with KEYLESS-GO is
malfunctioning, contact an authorized
Mercedes-Benz Center.
iVehicles with KEYLESS-GO*: To pre-
vent a possible inadvertent lockout, the
trunk lid will open automatically if a
SmartKey with KEYLESS-GO is recog-
nized inside the trunk.
When the hardtop is retracted, it must
be completely lowered in the trunk be-
fore the trunk lid can be closed
(page 235).
iYou can also lock the vehicle using the
lock button at the outside door handle
(page 60).

105 Controls in detail
Locking and unlocking
Checking the battery
Press button ‹ or Œ.
Battery check lamp5 (
page 98)
comes on briefly to indicate that the
SmartKey batteries are in order.Unlocking the trunk
You can unlock the trunk separately.
A minimum height clearance of
6.2 ft (1.88 m) is required to open the
trunk lid.
The handle is located above the rear li-
cense plate recess.
1Handle

Pull on handle 1.
The vehicle unlocks the trunk lid only.
!If battery check lamp5 (
page 98)
does not come on briefly during check,
then the SmartKey battery is dis-
charged.


Replace the battery (
page 377).
You can obtain the required battery at
any authorized Mercedes-Benz Center.
iIf the vehicle was previously centrally
locked, the trunk lid will lock automati-
cally when closed (
page 109). The
turn signals will flash three times to
confirm locking.
To prevent a possible inadvertent lock-
out, the trunk lid will open automatical-
ly if a SmartKey with KEYLESS-GO is
recognized inside the trunk.

109 Controls in detail
Locking and unlocking
Closing the trunk
1Handle
Lower trunk lid by firmly pulling on
handle1.

Close trunk lid with hands placed flat
on trunk lid.
Trunk lid emergency release
The emergency release button is located
on the left side of the trunk.
1Emergency release button
Briefly press emergency release
button1.
The trunk unlocks and the trunk lid
opens slightly.

Push up the trunk lid to fully open.
Warning!
G
To prevent possible personal injury, always
keep hands and fingers away from the trunk
opening when closing the trunk lid. Be espe-
cially careful when small children are
around.
Warning!
G
Only drive with the trunk closed. Among oth-
er dangers, such as your view being blocked,
exhaust fumes may enter the vehicle interi-
or.iTo prevent an inadvertent lockout, do
not place the SmartKey in the trunk.
Vehicles with KEYLESS-GO*: To pre-
vent a possible inadvertent lockout, the
trunk lid will open automatically if a
SmartKey with KEYLESS-GO is recog-
nized inside the trunk.
When the hardtop is retracted, it must
be completely lowered in the trunk be-
fore the trunk lid can be closed
(page 235).


200 Controls in detailRetractable hardtop
Opening the retractable hardtop with
the SmartKey (Summer opening
feature)

Aim the transmitter eye at the door
handle.

Press and hold button Πuntil the
retractable hardtop is completely
open.
The seat ventilation for the driver’s seat
switches on. The rear side windows
open. In the tachometer display you
will see the message Retractable roof Open
.

Release button Πto interrupt pro-
cedure.
Warning!
G
If the retractable hardtop does not com-
pletely open or close, the roof hydraulics will
lose pressure and the retractable hardtop is
lowered

after approximately seven minutes
when the ignition is switched on


after approximately 15 seconds when
the ignition is switched off
Shortly before the hardtop is lowered, a
warning will sound and the hardtop switch
lamp will flash. In the speedometer display
you will see K, in the tachometer display
you will see the message
being lowered
.


Properly lock the retractable hardtop
(page 199) before continuing to drive.
Warning!
G
Before operating the retractable hardtop,
make sure there is no danger of anyone
being injured by the moving parts (retract-
able roof, roof frame, and trunk lid) due to in-
attention.
Hands must never be placed near the roof
frame, upper windshield area, hardtop, shelf
behind roll bars, or trunk lid while the re-
tractable hardtop is being raised or lowered.
Serious personal injury may occur.
If potential danger exists, release the re-
spective button on the SmartKey. This im-
mediately interrupts the raising or lowering
procedure. You then can operate Πor
‹ to raise or lower the hardtop away
from the danger zone.