Lexus 2003 LS Owner's Manual page 193

3. After 30 seconds, the indicator flashes and the system
is set.
Cancelling the system
When you unlock any door using an ignition key or
wireless remote control, the system is cancelled.
If you unlock any door with the wireless remote control, the turn
signals flash twice.*
NOTE: *The turn signals can be set not to flash. Ask your
Lexus dealer for details.
Activating the system
The alarm sounds for 60 seconds if any of the following are
operated:
A Unlocking any door or trunk without using an ignition key or
wireless remote control.
A Opening the hood forcibly.
A Reconnecting the battery.
If any door is unlocked and the ignition key is not in the ignition
switch during the alarm sounding, its door is automatically
locked.
To stop the alarm: Use either of the following methods.
A Unlock the door or trunk using an ignition key or wireless
remote control.
A Turn the ignition switch on.
Testing the system
1. Open all the windows.
2. Set the system as described above.
The doors should be locked with the ignition key or wireless
remote control. Be sure to wait until the indicator light starts
flashing.
3. Unlock one of the doors from the inside through one of
the opened windows.
The system should activate the alarm.
4. Unlock any of the doors with a key or the wireless
remote control to cancel the system.
5. Repeat this operation for the other doors, trunk and
hood.
When testing the hood, also check that the system is activated
when the battery terminal is disconnected and then
reconnected.
If the system does not work properly, have it checked by your
Lexus dealer.
NOTICE
When disconnecting the battery, be sure to cancel the
theft deterrent system. Otherwise, the system could
activate an alarm and lock the unlocked door(s)
automatically.
THEFT DETERRENT
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