2003 Buick Century Owner's Manual - Page 131

MID/FLOOR: This mode directs airflow through both the floor and the instrument panel outlets. A small amount of air is directed to the windshield and the side window outlets. MID (Instrument Panel): This mode directs air through the instrument panel outlets. You may have to adjust the interior brightness control to the highest setting during the day in order to see the indicator lamp. This setting is not permitted in FRONT defrost mode and is only permitted in WINDSHIELD/FLOOR mode if the compressor is turned on. On hot days, open the window to let hot inside air escape; then close them. This helps to reduce the time it takes for your vehicle to cool down. It also helps the system to operate more efficiently. For quick cool down on hot days, press the AUTO button and the systemwill automatically enter the recirculation mode and the temperature will be at the full cold position for maximum cooling. The air-conditioning system removes moisture from the air, so you may sometimes notice a small amount of water dripping underneath your vehicle whileidling or after turning off the engine. This is normal. Operating the climate control system in the RECIRC mode may cause fogging of the vehicle's windows when the weather is cold and damp. To clear the fog, select either WINDSHIELD/FLOOR or WINDSHIELD mode and increase the speed. FLOOR: This setting sends most of the air through the outlets near the floor. The rest comes out of the defroster and side window outlets. VENT: Press this button to turn the air-conditioning compressor on or off. The indicator light on the VENT mode is lit when the compressor is turned off. You may have to adjust the interior brightness control to the highest setting during the day in order to see the indicator lamp. VENT does not operate in the FRONT defrost mode. RECIRC (Recirculation): Press this button to turn this mode on or off. RECIRC limits the amount of outside air coming into the vehicle and recirculates most of the air inside your vehicle. It can be use to prevent outside air and odors from entering your vehicle or to quickly heat or cool the air inside your vehicle. When this button is pressed an indicator light will come on. 3-22