2008 Toyota Prius Owners Manual - Page 226

3-1. Using the touch screen n "Day Mode" When the headlights are turned on, the screen dims. However the screen can be switched to "Day Mode". The screen will stay in "Day Mode" when the headlights are turned on until ITY31P014 is touched again. If the instrument panel light control is set to "MAX", "Day Mode" is not displayed. n To turn off the picture display If is touched, the screen display is turned off, and guidance is by voice only. 198 PRIUS_U_(L/O_0802)