Hazard Switch
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.
To turn the emergency flashers, push the switch. Push the switch again to turn them off. All the turn signal lights will flash. The emergency flashers will work with the engine running or off with or without the ignition key.