1999 Buick Park Avenue Owner's Manual - Page 158

yellowblue Heating Press AUTO and adjust the temperature by pressing the TEMP up or down arrow. You may also adjust the dual automatic comfortemp system manually by pressing the AIR FLOW button until FLOOR appears. Again, adjust the temperature by pressing the TEMP up or down arrow. Outside air is sent through the floor outlets. The heater works best if you keep your windows closed. Rear Window Defogger The lines you see on the rear window warm the glass. Press this button to start warming your window. Defogging and Defrosting On cool but humid days, use FRONT to keep the windshield and side windows clear and to quickly remove fog, frost or ice from the windshield. The fan speed will vary while in the AUTO mode. If a manual fan speed setting is selected, the fan speed will remain at that selection until the engine is turned off or another selection has been made. To turn off FRONT, press AUTO or AIR FLOW. At speeds above 30 mph (48 km/h), the rear defogger will stay on 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. Do not attach a temporary vehicle license, tape or decals across the defogger grid on the rear window. 3-6