How do you add freon to a Hyundai accent?

To add freon to a Hyundai Accent, first ensure the engine is off and the AC system is off. Locate the low-pressure service port, typically found on the larger of the two AC lines. Attach the refrigerant can's hose to the port, then start the engine and turn on the AC to the maximum setting. Open the valve on the refrigerant can slowly, monitoring the pressure gauge to avoid overfilling, and fill until the recommended pressure is reached. Always wear safety glasses and gloves when handling refrigerants.