TOYOTA 2011 Prius - Manual (Page 238)

212
2-3. Operating the lights and windshield wipers
PRIUS_U (OM47685U) DVD
Fog light switch ∗
∗
: If equipped
The fog lights improve visibility in difficult driving conditions, such
as in rain or fog. The fog lights can be used when the headlights are
on low beam.
Off
On
ITO23P109