Lexus 2003 LS Owner's Manual page 30

KEYS AND DOORS
Sounding an alarm*
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When you keep the "PANIC" button pushed for about 2 to
3 seconds, an alarm sounds to deter any person trying to
break into or damage your vehicle.
If you want to stop the alarm, push any button.
This function does not work when the ignition switch is in the
"ON" position.
NOTE: *The alarm can be set not to sound. Ask your Lexus
dealer for details.
16
Operating the windows and moon roof
The windows and moon roof can be operated using a
wireless remote control key from outside the vehicle.*
NOTE: *The windows can be deactivated. The moon roof
can be set to slide open or tilt up or deactivated. Ask your
Lexus dealer for details.
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Push the "UNLOCK" button until the windows and moon roof
start to move. At this time one beep sounds. When you
release the button, the windows and moon roof stop operating.
This function will work even with the window lock switch
pressed in.