Saturn 2004 Ion - Manual (Page 135)

The air-conditioning compressor also comes on.
Operation in this mode during periods of high humidity
and cool outside temperatures may result in increased
window fogging. If window fogging is experienced, select
the defrost mode.
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(Air Conditioning): Press this button to turn the
air-conditioning system on or off. When this button
is pressed, an indicator light above the button will come
on to let you know the air conditioning is activated.
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 recirculation mode.
2. Select air conditioning.
3. Select the coolest temperature.
4. Select the highest fan speed.
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 off the recirculation by
pressing the button again.
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.
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 clear fog or
frost from your windshield and side windows. 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.
For best results, clear all snow and ice from the
windshield before defrosting.
Turn the left knob to select the defog or defrost mode.
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(Defog): This mode directs half of the air to the
windshield and the side window outlets and half to the
floor outlets. When you select this mode the system runs
the air-conditioning compressor. To defog the windows
faster, turn the temperature control knob clockwise
to the warmest setting.
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(Defrost): This mode directs most of the air to the
windshield, with some air directed to the side window
outlets and the floor outlets. When you select this mode
the system runs the air-conditioning compressor.
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