2007 Saturn Aura Owner's Manual - Page 178

? (Recirculation): Press the left side of the button to turn the recirculation mode on. The air inside the vehicle will be recirculated through the climate control system and the vehicle, not from outside your vehicle. This mode is helpful when trying to limit odors from entering the vehicle and for maximum air conditioning performance in hot weather. When the button is pressed, an indicator light above the button comes on. The recirculation indicator light blinks three times if you try to use recirculation in a mode in which it cannot function. Only use this mode when it is needed for comfort, since window fogging rapidly occurs if the air conditioning compressor is not engaged. Pressing this button will cancel the outside air mode. When switching to the defog or defrost modes the system automatically moves from recirculation to outside air. When the vehicle or fan is turned off and back on, the system defaults to outside air automatically. Only use recirculation mode when it is needed for comfort, since window fogging can occur. Temperature Control: Turn the center knob clockwise or counterclockwise to increase or decrease the temperature inside your vehicle. When it is cold outside 0°F (−18°C) or lower, use the engine coolant heater, if vehicle has one, to provide warmer air faster to the vehicle. An engine coolant heater warms the coolant the engine uses that provides heat to warm the inside of your vehicle. For more information, see Engine Coolant Heater on page 120. # (Air Conditioning): Press this button to turn the air conditioning system on or off. When the air conditioning button is pressed, an indicator light will come on to show it is activated. The air-conditioning system removes moisture from the air, so a small amount of water dripping underneath the vehicle while it is idling or after the engine is turned off is normal. 178