1998 Toyota Tercel Owners Manual - Page 110

-Side vents Defrosting The outside of the windshield For best results, set controls to: Fan speed -Any setting except "OFF" Temperature -Towards WARM (red zone) Air intake -FRESH (outside air) Air flow -WINDSHIELD Air conditioning -OFF Vehicles with "A/C" button- Turning the air flow selector knob to the windshield position turns on the defrosterlinked air conditioning. This is to clear up the front view more quickly. When the "A/C" button is not pressed in, turning the air flow selector knob to another position turns off the air conditioning. If air flow control is not satisfactory, check the side vents. The side vents may be opened or closed as shown. D To heat the vehicle interior while defrosting the windshield, floor/windshield air flow. choose 110