2009 Toyota 4Runner Owners Manual - Page 186
2009 Toyota 4Runner Manual
Page 186 highlights
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. OFF Front fog lights ON 162