FLR-DEF Button
WARNING: This page is about a different car, the 1996 Mercury Grand Marquis and 1996 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.
Pressing button will show FLOOR, defrost symbol, and selected temperature in display window. Outside air will be equally distributed to floor and defrost vents, with a small amount of air going to side window demisters. A/C clutch will operate if ambient temperature is approximately 50°F (10°C) or more.