1999 Buick Park Avenue Owner's Manual - Page 157

yellowblue The ventilation system always allows fresh air to flow through your vehicle when the vehicle is moving, even with the system in the OFF mode. VENT: The VENT button allows outside air to flow through your vehicle without the air conditioning compressor working. Selecting VENT and the AUTO button at the same time allows the system to control automatically without the use of the air conditioning compressor or the use of the RECIRC mode. To turn off the VENT selection, push the VENT button again. RECIRC: When RECIRC is selected, the system will limit the amount of outside air entering your vehicle. This is helpful when you are trying to cool the interior of the vehicle quickly or limit the amount of outside air entering your vehicle for some other reason. RECIRC and AUTO may be selected at the same time. The system will remain in RECIRC until the ignition is turned off. The system will return back to the previously selected mode when the car is turned back on. RECIRC can be selected in all manual airflow modes except FRONT defrost. RECIRC cannot be selected with the VENT button. FRONT: This selection is used to defrost the windshield by directing the airflow toward the windshield. If FRONT is selected while in the AUTO mode, the fan speed and the air temperature from the front defroster will vary. If a manual fan speed setting is selected, the fan speed will remain at that selection until another fan speed selection is made or the AUTO mode is selected. To turn off FRONT, press the AUTO or AIR FLOW button. FRONT defrost will work better if any ice or snow is cleared from the hood and the air inlet area between the base of the windshield and the hood. Air Conditioning On hot days, open the windows long enough to let hot inside air escape. This reduces the time it takes for your vehicle to cool down. Then keep your windows closed for the air conditioner to work its best. On very hot days, the system will automatically enter the RECIRC mode and the temperature door will be positioned at the full cold position for maximum cooling. If the system is not in the AUTO mode, RECIRC should be selected to provide maximum cooling. You can choose the extreme comfort setting of 60_F (16_C), but the system will not cool any faster by choosing the extreme comfort setting. 3-5