Pontiac 2005 Grand Prix - Manual (Page 133)

Defogging and Defrosting
Fog on the inside of the vehicle is a result of high
humidity causing moisture to condense on the cool
window glass. This can be minimized if the climate
control system is used properly. There are two modes
to clear frost or fog from the windshield. Use the
defog mode to clear the windows of condensation and
to warm the vehicle’s occupants. Use the defrost
mode to remove frost or condensation from the
windshield quickly. Recirculation cannot be selected
when in these modes.
See “Rear Window Defogger” later in this section for
information on clearing the rear window of fog or ice.
.
(Floor/Defog): Use the floor/defog mode to clear the
windows of fog or moisture and warm the passengers.
This mode directs the air equally between the
windshield and the floor outlets, along with some
directed to the side window outlets.
This mode will automatically use outside air. The air
conditioning compressor will be engaged unless
the outside temperature is 40°F (4°C) or below.
1
(Defrost): Use the defrost mode to remove fog or
frost from the windshield more quickly. This mode
directs most of the air to the windshield and the side
window outlets, with some air directed to the floor
outlets. This mode has a timer and will shut off after
five minutes.
This mode will automatically use outside air. The air
conditioning compressor will be engaged unless
the outside temperature is 40°F (4°C) or below.
Temperature
The knob on the right of the climate control panel is the
temperature adjustment that can be used with any of
the climate control modes.
Turn the knob clockwise for warmer settings and
counterclockwise for colder settings.
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