2008 Buick LaCrosse Owner's Manual - Page 154

9y (Fan): Press this button to increase the fan speed. Pressing the arrows cancels the automatic operation and places the system in manual or semi-automatic mode. Press the AUTO button to return to automatic operation. If the airflow seems low when the fan is at the highest setting, the passenger compartment air filter may need to be replaced. For more information see Passenger Compartment Air Filter on page 3-29 and Scheduled Maintenance on page 6-4. (Floor): This mode directs most of the air to the floor, with some air directed to the side window outlets and a small amount to the windshield. (Bi-Level): This setting directs airflow to the instrument panel and floor outlets. A small amount of air is also directed to the windshield and the side window outlets. h (Recirculation): Press this button to turn recirculation mode on or off. This mode keeps outside air from coming into the vehicle. It can be used to help reduce the outside air and odors that enter your vehicle or help cool the air inside the vehicle quicker. Recirculation is not available while in the floor, defrost, or floor/defog modes. Using recirculation for long periods of time may cause the air inside your vehicle to become too dry. Recirculation mode has a five minute timer after which the system allows for some fresh outside air into the vehicle to maintain interior air quality. 6 # ) (Air Conditioning): Press this button to turn the air conditioning compressor on and off. The indicator light on the button will come on when the air conditioning is on. The indicator light will change with each button press even when conditions prevent operation. (Heated Seats): Press this button to turn the driver or passenger heated seats on and off. See Heated Seats on page 1-3 for additional information. Y (Vent): This mode directs air through the instrument panel outlets. ( 3-26