Kia Optima: Air Intake Control Switch

This is used to select fresh outside air or recirculation of the inside air.

WARNING

• Continued climate control system operation in the recirculated air position may allow humidity to increase inside the vehicle which may fog the glass and obscure visibility.
• Don’t sleep in a vehicle with air conditioning system on. It may cause serious harm to passenger’s or death due to rare density of oxygen and drop of bodily temperature.

Recirculated Air Position

When the air intake control switch is depressed (switch indicator illuminates), almost all outside air flow into the vehicle is shut off and air inside the vehicle is recirculated.

This position can be used temporarily for maximum heating or cooling (if equipped with air conditioning) and to help prevent undesirable outside air flow into the vehicle.

Outside (Fresh) Air Position

When you select the outside (fresh) air position by pressing the air intake control switch, air enters the ventilation system from outside the vehicle. Use this position for normal ventilation and heating.

The air flow control will be set at outside (fresh) air position automatically if any of following occur.

- The ignition key is OFF.
- The fan speed control knob is OFF (0).
- When you select the floor, floor-defrost or defrost mode position.

If you want the recirculated air position, press the corresponding button.

To cancel the forced outside (fresh) air position, refer to the canceling procedure in “Windshield Defrosting and Defogging� section.