Mercedes-Benz 2007 SL 55 AMG Operator's Manual page 100

Press button 1.
The indicator lamp 2 in the switch
comes on briefly.
Exit and lock your vehicle with the
SmartKey or (vehicles with
KEYLESS-GO*) with the lock button on
each door handle or trunk lid.
The tow-away alarm remains disarmed un-
til you lock the vehicle again.
Canceling the 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 an 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
button ( page 40).
The SmartKey with KEYLESS-GO must
be inside the vehicle.
Safety and Security
Anti-theft systems
99