Circuit Description
WARNING: This page is about a different car, the 2002 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.
This is the TRAC & VSC control main switch. When the VSC OFF switch is pressed, TRAC & VSC control is deactivated and the VSC OFF indicator light lights up. By turning off the ignition switch, TRAC & VSC control is surely activated when the ignition switch turns ON next time. Also, the VSC OFF indicator light turns "ON" when the ECU prohibit TRAC & VSC controls.