How do you add freon to 2008 Jeep Patriot?

To add freon to a 2008 Jeep Patriot, first ensure the engine is off and the AC system is off. Locate the low-pressure service port, which is typically on the larger diameter AC line, and connect an R134a refrigerant can with a gauge. Start the engine and the AC on the coldest setting, then slowly open the refrigerant can to allow it to fill the system while monitoring the pressure gauge. Be cautious not to overfill and ensure the system is properly serviced to avoid any damage.