2003 Oldsmobile Aurora Owner's Manual - Page 139

Defogging and Defrosting 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. (Defog): This mode directs the air equally between the windshield and the floor outlets. When you select this mode, the system turns off recirculation and runs the air conditioning compressor unless the outside temperature is at or below freezing. +> At speeds above 30 mph (48 km/h), the defogger will operate continuously until you press the REAR button again. After 10 minutes of driving below 30 mph (48 km/h), the defogger will turn off automatically. If you need additional warming time, push the button again. The system will then operate for five minutes before going off by itself. If your vehicle has heated outside rearview mirrors, the mirrors will heat to help clear fog or frost from the surface of the mirror when the rear window defogger button is pressed. Notice: Don't use a razor blade or something else sharp on the inside of the rear window. If you do, you could cut or damage the defogger 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. 9 (Defrost): This mode directs most of the air to the windshield and the outboard outlets (for the side windows), with some air directed to the floor outlets. In this mode, the system will automatically run the air conditioning compressor, unless the outside temperature is at or below freezing. Recirculation cannot be selected while in the defrost mode. Rear Window Defogger The rear window defogger uses a warming grid to remove fog or frost from the rear window. : Press this button to turn the rear window defogger on or off. Be sure to clear as much snow from the rear window as possible. 3-26