How do you add freon to 2010 Ford fusion?

To add Freon to a 2010 Ford Fusion, first ensure the vehicle is turned off and locate the low-pressure service port, typically found on the larger diameter aluminum line between the compressor and the evaporator. Attach the refrigerant can's hose to this port, making sure it’s securely connected. Start the engine and turn on the AC to the maximum setting, then slowly open the valve on the refrigerant can to add Freon until the system is adequately charged, frequently checking the pressure gauge if available. Always follow safety precautions and consider consulting a professional if unsure.