Chevrolet 2004 Epica Owner's Manual page 124

Defogging and Defrosting
Fog on the inside of windows is a result of high humidity
or 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. 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.
É
(Defog): Press the MODE button until the defog
symbol appears on the automatic climate control system
display.
This mode directs most of the air to the windshield and
the floor outlets. A small amount of air is also directed
to the outboard outlets for the side windows.
To help clear the side windows quickly, do the following:
1. Select the bi-level mode.
2. Select the highest fan speed.
3. Select A/C.
4. Select the temperature.
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1
(Defrost): Press the defrost button to select the
defrost function.
Pressing this button directs the air to the windshield and
the outboard outlets for the side windows.
To help clear the windshield quickly, do the following:
1. Select the defrost mode.
2. Select the highest temperature.
3. Select the highest fan speed.
Do not drive the vehicle until all windows are clear.
To cancel defrost, press the MODE or AUTO buttons.
If you press the AUTO button, the system will operate
automatically.