Defogging And Defrosting - Pontiac 2005 Grand Am Owner's Manual

A/C (Air Conditioning): Press this button to turn the
air-conditioning system on or off. When A/C is pressed,
an indicator light above the button will come on to let you
know that air conditioning is activated. The fan knob must
be set to a speed for the air conditioning to operate.
On hot days, open the windows to let hot inside air
escape; then close them. This helps to reduce the time
it takes for your vehicle to cool down. It also helps
the system to operate more efficiently.
For quick cool down on hot days:
1. Select the vent mode.
2. Select the highest fan speed.
3. Select A/C.
4. Select the recirculation mode.
5. Select the coolest temperature.
Using these settings together for long periods of time
may cause the air inside of your vehicle to become too
dry. To prevent this from happening, after the air in
your vehicle has cooled, turn the recirculation mode off.
The air-conditioning system removes moisture from
the air, so you may sometimes notice a small amount of
water dripping underneath your vehicle while idling or
after turning off the engine. This is normal.
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Defogging and Defrosting

Fog on the inside of windows is a result of high humidity
(moisture) condensing on the cool window glass. This
can be minimized if the climate control system is
used properly. There are two modes to choose from to
clear fog or frost from your windshield. Use the
defog mode to clear the windows of fog or moisture and
warm the passengers. Use the defrost mode to
remove fog or frost from the windshield more quickly.
Turn the right knob clockwise or counterclockwise
to select defog or defrost mode.
-
(Defog): This mode directs half of the air to the
windshield with most of the remaining air directed to the
floor outlets and some air directed at the side windows.
When you select this mode, the system turns off
recirculation automatically and runs the air-conditioning
compressor unless the outside temperature is at or
below freezing. The recirculation mode cannot be
selected while in the defog mode.
1
FRONT (Defrost): This mode directs most of the air
to the windshield, with some air directed to the floor
outlets. In this mode, the system will automatically turn off
recirculation and run the air-conditioning compressor,
unless the outside temperature is at or below freezing.
Recirculation cannot be selected while in the defrost
mode. Do not drive the vehicle until all the windows
are clear.