Front Fog Light Switch
WARNING: This page is about a different car, the 2003 Lexus IS 300 and 2002 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.
To turn on front fog lights, turn switch to ON position. Front fog lights come on only when headlights are on low beam. When front fog lights are on, indicator lights up in instrument cluster.