Defogging And Defrosting - Chevrolet 2006 Optra Owner's Manual

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.
Select one of these available modes from the
right knob.
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(Defog): 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 and to the instrument panel side 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 and the outboard outlets for the side
windows. A small amount of air is also directed to the
instrument panel side outlets.
When you select this mode, the system runs the
air-conditioning compressor. To defrost the windows
faster, turn the temperature control knob clockwise
to the warmest setting.
Do not drive the vehicle until all windows are clear.
Front Heated Windshield
Your vehicle may have a heated front windshield which
can be used with defog and defrost. This feature will
only work when the ignition is turned to ON.
The front heated windshield uses a heated element to
remove fog or frost from the bottom of the windshield.
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(Rear): Press this button to heat the front
windshield. The button is located below the audio
system. An indicator light in the button will come on to
let you know that the feature is activated. The front
windshield heater will turn off about ten minutes after the
button is pressed. It can also be turned off by pressing
the button again or by turning off the engine. See
"Rear Window and Outside Mirror Defogger" later in this
section for more information on this button.