2001 Buick Park Avenue Owner's Manual - Page 175

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. Passenger Climate Control 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 warming grid or the integrated rear window antenna, and the repairs wouldn't be covered by your warranty. The front seat passenger can control the air temperature in their seating area. This can be set up to 5_F (3_C) cooler or warmer than the primary setting. You can activate this feature by sliding the lever located on the right side of the instrument panel toward WARM or COOL. If the passenger climate control has been turned on, it can be turned off by pressing the OFF button once. Pressing the OFF button a second time will turn off the main system. 3-7