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 found, have the system inspected by an authorized Kia dealer.
WARNING - Vehicles equipped with R-1234yf

Because the refrigerant is mildly flammable and at very high pressure, the air conditioning system should only be serviced by trained and certified technicians. It is important that the correct type and amount of oil and refrigerant is used.
Otherwise, it may cause damage to the vehicle and personal injury.
WARNING
The oil and refrigerant in your vehicle's air conditioning system is under very high pressure. If proper service procedures are not followed, an explosion may result. To reduce the risk of serious injury or death, the air conditioning system in your vehicle should only be serviced by trained and certified technicians.
CAUTION
It is important that the correct type and amount of oil and refrigerant is used, otherwise damage to the vehicle may occur. To prevent damage, the air conditioning system in your vehicle should only be serviced by trained and certified technicians.
The climate control air filter installed behind the glove box filters the dust or other pollutants that come into the vehicle from the outside through the heating and air conditioning system.
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.
Checking the parking brake Check the stroke of the parking brake by counting the number of “clicks’’ heard while fully applying it from the released position. Also, the parking brake alone should securely hold the vehicle on a fairly steep grade.
1. Open the trunk lid. 2. Open the service cover. 3. Remove the nuts from the vehicle. 4. Remove the rear combination lamp assembly from the body of the vehicle. 5. Remove the socket from the assembly by turning the socket counterclockwise until the tabs on the socket align with the slots on the assembly.