1996 Toyota Corolla Owners Manual - Page 106
1996 Toyota Corolla Manual
Page 106 highlights
Side Vents S If following another vehicle on a dusty road, or driving in windy and dusty conditions, it is recommended that the air intake control lever be temporarily set to the RECIRCULATED AIR position, which will close off the outside passage and prevent outside air and dust from entering the vehicle interior. The side vents may be opened or closed as shown. 100