FORD 1999 F-150 - Manual (Page 57)

• FLOOR-Allows for maximum heating. Distributes outside air through
the floor ducts.
• FLOOR & DEF-Distributes outside air through the floor ducts and the
windshield defroster ducts.
• DEF
-Distributes outside air through the windshield defroster
ducts. It can be used to clear ice or fog from the windshield.
Operating tips
• In humid weather, select
before driving. This will help to 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).
• Remove any snow, ice or leaves
from the air intake area (at the
bottom of the windshield under
the hood).
• When placing objects on top of your instrument panel, be careful to
not place them over the defroster outlets. These objects can block
airflow and reduce your ability to see through your windshield. Also,
avoid placing small objects on top of your instrument panel. These
objects can fall down into the defroster outlets and block airflow and
possibly damage your climate control system.
Controls and features
57