2005 Toyota Prius Owners Manual - Page 197

Instrument panel vents " switch: Use this switch to turn on " or off the rear window and outside rear view mirror defoggers. (For details, see page 110.) Air conditioning filter- CAUTION Operate the switches with due care while you are driving to avoid accidents. 27p006a 82p109 If air flow control is not satisfactory, check the instrument panel vents. The instrument panel vents may be opened or closed as shown. The air conditioning filter information label is placed on the left side of the glove box as shown and indicates that a filter has been installed. The air conditioning filter prevents dust from entering the vehicle through the air conditioning vent. 187