2003 Buick Century Owner's Manual - Page 133

Defogging and Defrosting Rear Window Defogger The rear window defogger uses a warming grid to remove fog or frost from the rear window. REAR: Press this button to turn the rear window defogger on. It will turn off after about 15 minutes. If you turn it on again, the rear defogger will only run for about seven and one half minutes before turning off. You can also turn it off by pressing the button again. 9 FRONT (Defrost): This setting brings in outside air and directs most of the air through the defrost outlet. Some of the air also goes to the floor vents and the side window outlets. The indicator light on the button will come on and WINDSHIELD will be seen on the display To defrost the windows quickly, press the FRONT button, set the temperature to 90°F (32"C), select a high fan speed an turn the DUAL button off. @ To warm passengers while keeping the window clear, push the AIR FLOW button and WINDSHIELD/FLOOR will appear on the display. Select a fan speed. The air-conditioning compressor will run automatically in this setting unless the outside temperature is below 40°F (4°C). 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. 3-24