2009 Toyota Sienna Owners Manual - Page 218

2 -3 . Ope ra t ing t he light s a nd w ipe rs Fog light sw it ch (if e quippe d) The fog lights improve visibility in difficult driving conditions, such as in rain or fog. They can be turned on only when the headlights are on low beam. To turn the front fog lights off To turn the front fog lights on 190