2005 MERCEDES-BENZ SL600 alarm

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.

90 Safety and SecurityAnti-theft systemsCanceling the alarm
To cancel the alarm:
With the SmartKey
Insert the SmartKey in the starter
switch.
or

Press theŒor‹button on the
SmartKey.
With KEYLESS-GO*

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

Press the KEYLESS-GO start/stop but-
ton.
The SmartKey with KEYLESS-GO must
be inside the vehicle.
Tow-away alarm
Once the tow-away alarm is armed, a visual
and audible alarm will be triggered when
someone attempts to raise the vehicle. Arming tow-away alarm
When you lock your vehicle, the tow-away
alarm is automatically armed after about
30 seconds.
When you unlock your vehicle, the
tow-away protection disarms automatical-
ly.
Disabling tow-away alarm
To prevent triggering the tow-away alarm,
disable off the tow-away alarm feature be-
fore towing the vehicle, or when parking on
a surface subject to movement, such as a
ferry or auto train.
The button is located on the center con-
sole between the driver’s seat and the pas-
senger seat.
iThe tow-away protection alarm is trig-
gered, for example, if the vehicle is lift-
ed on one side.
If 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.

91 Safety and Security
Anti-theft systems
1Tow-away alarm off button
2Indicator lamp
Switch off ignition and remove the
SmartKey from the starter switch.

Press button1.
The indicator lamp2 in the switch
comes on briefly.

Exit and lock your vehicle with the
SmartKey or (vehicles with
KEYLESS-GO*) with the lock button at
each door handle or trunk lid.
The tow-away alarm remains disarmed un-
til you lock your vehicle again.
Canceling tow-away alarm
To cancel the alarm:
With the SmartKey

Insert the SmartKey in the starter
switch.
or

Press the Œ or ‹button on the
SmartKey.
With KEYLESS-GO*

Grasp the outside door handle.
or

Press the KEYLESS-GO start/stop but-
ton.
iYou cannot disarm the tow-away alarm
if the ignition is switched on.

96 Controls in detailLocking and unlocking
Factory setting
Global unlocking
Press button Œ.
All turn signals flash once. The locking
knobs in the doors move up. The
anti-theft alarm system is disarmed.
The vehicle will lock again automatically
within approximately 40 seconds of un-
locking if:


neither door nor trunk is opened


the SmartKey is not inserted in the
starter switch


the central locking switch is not acti-
vated
Global locking

Press button ‹.
All turn signals flash three times. The
locking knobs in the doors move down.
The anti-theft alarm system is armed.Selective setting
If you frequently travel alone, you may wish
to reprogram the SmartKey so that
pressingŒ only unlocks the driver’s
door, interior lockable storage compart-
ments and the fuel filler flap.

Press and hold buttons Œ and ‹
simultaneously for about six seconds
until battery check lamp5 flashes
twice.
The SmartKey will then function as fol-
lows:
Unlocking driver’s door and fuel filler
flap

Press button Πonce.
All turn signals flash once. The locking
knob in the driver’s door moves up.
The anti-theft alarm system is disarmed.
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 interfer-
ence, and
(2) this device must accept any inter-
ference received, including interfer-
ence that may cause undesired
operation undesired operation of
the device.
Any unauthorized modification to this
device could void the user’s authority
to operate the equipment.iYou can also open and close the power
windows (
page 193) and the retract-
able hardtop using the SmartKey
(
page 200).

97 Controls in detail
Locking and unlocking
Global unlocking
Press button Πtwice.
All turn signals flash once. The locking
knobs in the doors move up. The anti-theft
alarm system is disarmed.
Global locking

Press button ‹.
All turn signals flash three times. The lock-
ing 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 six seconds
until battery check lamp5
(page 94) flashes twice.Checking the batteries

Press button ‹ or Œ.
Battery check lamp5 (
page 94)
comes on briefly to indicate that the
SmartKey batteries are in order.
!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 (
page 97) and replace
them if necessary (
page 377).


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 is malfunctioning, con-
tact an authorized Mercedes-Benz
Center.
iIf battery check lamp5 does not
come on briefly during check, then the
SmartKey batteries are discharged.

Replace the batteries (
page 377).
You can obtain the required batteries
at any authorized Mercedes-Benz
Center.
iIf the batteries are checked within sig-
nal range of the vehicle, pressing
the‹ orŒ button will lock or
unlock the vehicle accordingly.

102 Controls in detailLocking and unlocking

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
recognized!
will appear in the multi-
function display while driving off.
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
wi th KEY LES S-GO tha t i s le ft ins id e t he
vehicle. If you leave the SmartKey with
KEYLESS-GO behind when exiting and
locking the vehicle, the message
Key
recognized in vehicle!
will appear in
the multifunction display.Factory setting
Global unlocking

Grasp the door handle.
All turn signals flash once. The locking
knobs in the doors move up. The
anti-theft alarm system is disarmed.
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 60) or trunk (
page 104).
All turn signals flash three times. The
locking knobs in the doors move down.
The anti-theft alarm system is armed.
iIf the vehicle has been parked for more
than 72 hours, you must pull the out-
side door handle in order to activate
the KEYLESS-GO function.
iThe vehicle could inadvertently unlock
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

103 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 a door han-
dle only unlocks the driver’s door, interior
lockable storage compartments and the
fuel filler flap.
Press and hold buttons Œ and ‹
simultaneously for about six seconds
until battery check lamp5
(page 94) 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 signals flash 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 signals flash once. The locking
knobs in the doors move up. The
anti-theft alarm system is disarmed.
Global locking

Press lock button at door handle or
trunk lid.
All turn signals flash 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 six seconds
until battery check lamp5
(page 98) flashes twice.
!If you can no longer lock or unlock the
vehicle with the SmartKey with
KEYLESS-GO, then the battery in the
SmartKey is discharged, the SmartKey
with KEYLESS-GO is malfunctioning or
the vehicle battery is drained.

Check the battery in the SmartKey
with KEYLESS-GO (
page 97) and
replace it if necessary
(
page 377).