Where to add freon on 2003 Kia Sedona?

To add freon to a 2003 Kia Sedona, locate the low-pressure service port on the air conditioning system, which is typically found on the larger diameter aluminum line connecting the compressor to the evaporator. The port is usually capped with a plastic cover, which you can remove. Attach the refrigerant can's hose to the port, ensuring a secure connection, and follow the manufacturer's instructions to add the freon. Always wear safety gear and ensure the vehicle is turned off before starting the process.