Rear Window Defogger - Chevrolet 2008 Cobalt Owner's Manual

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 the windshield and side windows. When either
the defrost or defog mode is selected the system runs
the air conditioning compressor.
Turn the left knob to select the defog or defrost mode.
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(Defog): Use the defog mode to clear the windows
of fog or moisture and warm the passengers. Half of
the air is directed to the windshield and side window
outlets and the remaining to the floor outlets. To defog
the windows faster, turn the temperature control
knob clockwise to the warmest setting.
0
(Defrost): Use the defrost mode to remove fog or
frost from the windshield more quickly. Most of the
air is directed to the windshield, with some air directed
to the side window outlets and the floor outlets.
To defrost the windows faster, turn the temperature
control knob clockwise to the warmest setting.
For best results, clear all snow and ice from the
windshield before defrosting.
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Rear Window Defogger

The rear window defogger uses a warming grid to
remove fog from the rear window.
The rear window defogger will only work when the
ignition is in ON/RUN.
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(Rear): Press the button to turn the rear window
defogger on or off. Be sure to clear as much snow from
the rear window as possible. An indicator light above
the button comes on to show that the rear window
defogger is activated.
The rear window defogger turns off about 15 minutes
after the button is pressed. If turned on again, the
defogger only runs for about seven minutes before
turning off. If the vehicle is moving faster than 50 mph
(80 kph), the rear defogger will stay on. The defogger
can also be turned off by pressing the button again or by
turning off the engine.
Notice: Do not use anything sharp on the inside
of the rear window. If you do, you could cut or
damage the warming grid, and the repairs would not
be covered by your warranty. Do not attach a
temporary vehicle license, tape, a decal or anything
similar to the defogger grid.