2011 Buick Lucern Owner's Manual - Page 179

# (Air Conditioning): Press to turn the air conditioning system on or off and override the automatic system. An indicator light below the button comes on to show that this mode is on. 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. When the passenger climate control system is on, the passenger temperature setting is displayed. If the PASS button is pressed to turn the passenger temperature setting off, the driver temperature setting controls the temperature for the entire vehicle. Sensors : (Outside Air): Press to let outside air enter the vehicle. An indicator light comes on to show this mode is on. Pressing ? cancels this mode. ? (Recirculation): Press to turn the recirculation mode on. An indicator light below the button comes on to show that this mode is on. This mode recirculates and helps to quickly cool the air inside the vehicle. It can be used to prevent outside air and odors from entering the vehicle. This mode cannot be selected while in the defog or defrost modes. If you try to select the recirculation mode, the indicator light flashes three times and turns off. Operation in this mode during periods of high humidity and cool outside temperatures may result in increased window fogging. If window fogging is experienced, select the defrost mode. PASS (Passenger Climate Control): Press to turn the passenger climate control systems on or off. The solar sensor, located in the defrost grille, in the middle of the instrument panel, monitors the solar radiation. Do not cover the solar sensor or the system will not work properly. 4-23