Ford F series Owner's Manual page 62

MIX
Select MIX to get air to the floor and windshield
defrosters at the same time equipped on vehicles
with A/C. If the outside temperature is about
50˚ (10˚C) or warmer, the air will also be
dehumidified to remove moisture. This feature
will help prevent fogging in humid weather. The
air can be cooled or heated.
V DEF
Select V DEF to obtain maximum air flow to
the windshield. Rotate the center knob into the
RED area for the air temperature required to
defrost. Rotate the H knob on the left to
increase the air flow. On vehicles equipped with
A/C, when the outside air temperature is about
50˚F (9˚C) or warmer, the air will be
dehumidified to remove moisture. The air can be
cooled or heated.
Operating Tips
The following tips will help you to get the most
satisfaction from your air conditioning (if
equipped) and heater system.
In humid weather, select V DEF. This will
help to prevent windshield fogging. After a
few minutes of operation, you may select
another air flow position. Rotate the control
knob to obtain your desired comfort level.
To prevent humidity buildup inside your
vehicle, always drive with the Air
Conditioning (if equipped) and Heater
System turned on.
Do not put objects under the front seats that
will interfere with the flow of air under the
seats to the back seat area of your vehicle.
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