Kia Optima: Automatic heating and air conditioning
The automatic climate control system is controlled by simply setting the desired temperature.
The Full Automatic Temperature Control (FATC) system automatically controls the heating and cooling system as follows;
1. Press the AUTO button. The modes, fan speeds, air intake and air-conditioning will be controlled automatically by setting the temperature.
2. Set the temperature control knob to the desired temperature.
If the temperature is set to the lowest setting (Lo), the air conditioning system will operate continuously.
3. To turn the automatic operation off, select any button or switch of the following:
• Mode selection button
• Air conditioning button
• Front windshield defroster
button
• Air intake control button
• Fan speed control switch
The selected function will be controlled manually while other functions operate automatically.
For your convenience and to improve the effectiveness of the climate control, use the AUTO button and set the temperature to 23°C (73°F).

✽ NOTICE
Never place anything over the sensor located on the instrument panel to ensure better control of the heating and cooling system.
Automatic climate control system
Manual heating and air conditioningAccelerator Position Sensor (APS). Specifications
Specification
Accelerator
Position
Output Voltage (V)
APS1
APS2
C.T
0.7 ~ 0.8
0.29 ~ 0.46
...
Installation
1.
Remove the ignition key from
the vehicle.
2.
Disconnect the battery negative
cable and wait for at least three minutes.
3.
Install the seat belt ...
Turn signals and lane change signals
The ignition switch must be on for the turn signals to function. To turn on the
turn signals, move the lever up or down (A). The green arrow indicators on the instrument
panel indicate which tur ...