Kia Optima: Manual heating and air conditioningThe heating and cooling system can be controlled manually by pushing buttons other than the AUTO button. In this case, the system works sequentially according to the order of buttons selected.
1. Start the engine.
2. Set the mode to the desired position. To improve the effectiveness of heating and cooling :
- Heating: 
- Cooling:

3. Set the temperature control to the desired position.
4. Set the air intake control to the outside (fresh) air or recirculated air position.
5. Set the fan speed control to the desired speed.
6. If air conditioning is desired, turn the air conditioning system on.
Press the AUTO button in order to convert to full automatic control of the system.
Automatic heating and air conditioning
Mode selectionOverdrive Clutch Control Solenoid Valve(OD/C_VFS). Schematic Diagrams
Circuit Diagram
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Seat
Driver’s seat
(1) Seat adjustment, forward / backward (2) Seatback recliner (3) Seat adjustment,
height (4) Lumbar support (5) Driver position memory system* (6) Seat warmer
switch* (7) Headr ...
Highway driving
Tires
Adjust the tire inflation pressures to specification. Low tire inflation pressures
will result in overheating and possible failure of the tires.
Avoid using worn or damaged tires which may r ...