Kia Optima: Defrost Button
Most of the air flow
is directed to the windshield with a small amount of air directed to the side window
defrosters.
When the defrost button is pressed the outside (fresh) air position will automatically selected and the air will be discharged through the windshield defrost vents. The air conditioning will automatically operate based on ambient temperature. If you don’t want the air-conditioning or outside (fresh) air position press the corresponding button to cancel the operation.
Air Conditioning Button

Push the A/C button to turn the air conditioning system on. The indicator light in the button will illuminate when the fan speed control knob is on. Push the button again to turn the air conditioning system off.
Air Flow Control (Mode Switch)
Air ConditioningRepair procedures
Inspection
Front Door Lock Actuator Inspection
1.
Remove the front door trim.
(Refer to the BD group - "Front door")
2.
Remove the front door module.
...
Temperature Control Actuator. Description and Operation
Description
1.
Heater unit includes mode control
actuator and temperature control actuator.
2.
Temperature control actuator
is located at the heater unit. It regulat ...
Bulb wattage
...