2007 Chevrolet Cobalt Owner's Manual - Page 156

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. 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. 0 (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. To defrost the windows faster, turn the temperature control knob clockwise to the warmest setting. 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 RUN. - (Defog): This mode directs about 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. < (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 will come on to let you know that the rear window defogger is activated. 156