Kia Optima DL3: Windshield defrosting and defogging / Automatic climate control system

To defog inside windshield

1. Set the fan speed to the desired position.

2. Select desired temperature.

3. Press the defroster button ( ).

4. The outside (fresh) air position will be selected automatically and the air conditioning will turn on according to the detected ambient temperature.

If the air conditioning and outside (fresh) air position are not selected automatically, adjust the corresponding button manually. If the position is selected, lower fan speed is adjusted to a higher fan speed.

To defrost outside windshield

1. Set the fan speed to the highest position.

2. Set the temperature to the extreme hot (HI) position.

3. Press the defroster button ( ).

4. The outside (fresh) air position will be selected automatically and the air conditioning will turn on according to the detected ambient temperature.

    To defog inside windshield 1. Set the fan speed to the desired position. 2. Select desired temperature. 3. Select the or position. 4. The outside (fresh) air and air conditioning will be selected automatically.

    To reduce the possibility of fogging up the inside of the windshield, the air intake or air conditioning is controlled automatically according to certain conditions such as or position.

    Other information:

    Kia Optima DL3 2019-2026 Service and Repair Manual: Ventilated and Heated Seat

    Schematic diagrams Connector and Terminal Function Pin Function Connector A Connector B 1 Driver heater ground (-) Driver blower speed (+) 2 Passenger heater ground (-) - 3

    Kia Optima DL3 2019-2026 Service and Repair Manual: Auto Defoging Actuator

    Components and components location Components Location 1. Auto logging actuator Description and operation Description The auto defogging sensor is installed on front window glass. The sensor judges and sends signal if moisture occurs to blow out wind for defogging.

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