Kia Optima: Features of your vehicle / Windshield defrosting and defogging

Kia Optima DL3 2019-2023 Owner's Manual / Features of your vehicle / Windshield defrosting and defogging

WARNING - Windshield heating

Do not use the or position during cooling operation in extremely humid weather. The difference between the temperature of the outside air and the windshield could cause the outer surface of the windshield to fog up, causing loss of visibility. In this case, set the mode selection to the position and fan speed control to the lower speed.

Checking the amount of air conditioner refrigerant and compressor lubricant
When the amount of refrigerant is low, the performance of the air conditioning is reduced. Overfilling also has a negative impact on the air conditioning system. Therefore, if abnormal operation is ...

Manual climate control system
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 sele ...

Other information:

Kia Optima DL3 2019-2023 Owner's Manual: Hill-start assist control (HAC)


A vehicle has the tendency to roll back on a steep hill when it starts to go after stopping. The Hill-start Assist Control (HAC) prevents the vehicle from rolling back by applying the brakes automatically for about 2 seconds. The brakes are released when the accelerator pedal is depressed or a ...

Kia Optima DL3 2019-2023 Owner's Manual: Child-protector rear door lock


The child safety lock is provided to help prevent children from accidentally opening the rear doors from inside the vehicle. The rear door safety locks should be used whenever children are in the vehicle. 1. Open the rear door. 2. Turn the child safety lock (1) located on the rear edge of th ...

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