1998 Ford Expedition Owner Guide 1st Printing - Page 26

Controls and features • FLR & DEF-Distributes outside air through the windshield defroster ducts and the floor ducts. Heating and air conditioning capabilities are provided in this mode. For added customer comfort, the air distributed through the floor ducts will be slightly warmer than the air sent to the windshield defroster ducts. If the temperature is about 10°C (50°F) or higher, the air conditioner will automatically dehumidify the air to prevent fogging. -Distributes outside • DEF air through the windshield defroster ducts. It can be used to clear ice or fog from the windshield. If the temperature is about 10°C (50°F) or higher, the air conditioner will automatically dehumidify the air to prevent fogging. Operating tips • In humid weather, select DEF before driving. This will prevent your windshield from fogging. After a few minutes, select any desired position. • To prevent humidity buildup inside the vehicle, don't drive with the climate control system in the OFF position. • Don't put objects under the front seat that will interfere with the airflow to the back seats (if equipped). 26