2010 Buick Lucerne Owner's Manual - Page 180

To change the current mode, select one of the following: # (Air Conditioning): H (Vent): outlets. Air is directed to the instrument panel ) (Bi-Level): Air is divided between the instrument panel outlets and the floor outlets. Slightly cooler air is directed to the instrument panel outlets and warmer air is directed to the floor outlets. 6 (Floor): Air is directed to the floor outlets, with some air directed to the windshield and side window outlets. If recirculation is selected while in this mode, it stays on for three minutes to reduce windshield fogging. This clears the windows of fog or moisture. Air is directed to the windshield and side window outlets and to the floor outlets. The system runs the air conditioning compressor unless the outside temperature is near or below freezing. This mode clears the windshield of fog or frost more quickly. Air is directed to the windshield and side window outlets. The system runs the air conditioning compressor unless the outside temperature is near or below freezing. Press to turn the air conditioning system on or off. An indicator light below the button comes on to show that this mode is on. Air conditioning can be selected in any mode as long as the fan knob is not in the off position. On hot days during the vehicle's initial start-up, open the windows to let hot inside air escape; then close them. This helps to reduce the time it takes for the vehicle to cool down. It also helps the system to operate more efficiently. For quicker cool down on hot days, do the following: 1. Select 2. 3. - (Floor/Defog): H. Select h. Select #. 0 (Defrost): 4. Select the coolest temperature. 5. Select the highest fan speed. The air-conditioning system removes moisture from the air, so a small amount of water might drip under the vehicle while idling or after turning off the engine. This is normal. 4-20