Sounding An Alarm
WARNING: This page is about a different car, the 2003 Lexus RX 300 and 2002 Lexus RX 300. However, it is still accessible from the selected car via links, so may be relevant.
When you push the PANIC button for about 1 second, 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 key is in the ON position.