Cancelling System
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 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 (the turn signals can be set not to flash).