How do you add freon in an 2005 Hyundai Santa Fe?

To add refrigerant (commonly referred to as Freon) to a 2005 Hyundai Santa Fe, first ensure the vehicle is off and locate the low-pressure service port on the AC system, usually found near the accumulator. Remove the cap from the service port and connect the refrigerant can's hose to it, following the instructions on the can. Start the vehicle and turn the AC to the maximum setting, then slowly release the refrigerant into the system, monitoring the pressure gauge to avoid overfilling. Always wear safety gear and consider consulting a professional if unsure.