Hazard Warning Signal Switch
WARNING: This page is about a different car, the 2003 Lexus ES 300 and 2002 Lexus ES 300. However, it is still accessible from the selected car via links, so may be relevant.
To turn on the emergency flashers, push the switch. All the turn signal lights will flash. The emergency flashers will work with the engine running or off and with or without the ignition key. The turn signal light switch will not work when the emergency flashers are in operation.