Oldsmobile 2004 Alero - Manual (Page 124)

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(Floor): This mode directs most of the air to the floor
outlets with some air directed to the side windows.
The right knob can also be used to select defog or defrost
modes. Information on defogging and defrosting can be
found later in this section.
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(Fan): Turn the left knob clockwise or
counterclockwise to increase or decrease the fan speed.
:
(Outside Air): Press this button to turn the outside
air mode on or off. When this mode is on, outside air will
circulate throughout your vehicle. The outside air mode
can be used with all modes, but it cannot be used with the
recirculation mode.
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(Recirculation): This mode keeps outside air from
coming in the vehicle. It can be used to prevent outside
air and odors from entering your vehicle or to help heat or
cool the air inside your vehicle more quickly. Press this
button to turn the recirculation mode on or off. The
air-conditioning compressor will come on. The
recirculation mode cannot be used with the outside air
mode. Recirculation is not available when in the defog or
defrost modes or when the fan is off.
When you switch to the defog or defrost modes the
system will automatically move from recirculation to
outside air. When you move the mode knob back to
another mode, the system will move back into
recirculation. When the car is turned off and back on the
system will default to outside air automatically.
Temperature Control: Turn the center knob clockwise
or counterclockwise to manually increase or decrease
the temperature inside your vehicle.
When it’s cold outside 0°F (
−
18°C) or lower, use the
engine coolant heater, if equipped, to provide warmer air
faster to your vehicle. An engine coolant heater warms
the coolant that the engine uses to provide heat to
warm the inside of your vehicle. For more information,
see Engine Coolant Heater on page 2-20.
A/C (Air Conditioning): Press this button to turn the
air-conditioning system on or off. When A/C is pressed,
an indicator light in the button will come on to let you
know that air conditioning is activated.
The fan knob must be set to a speed for the air
conditioning to operate.
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