How do you add refrigerant to Subaru Outback 2001?

To add refrigerant to a 2001 Subaru Outback, first ensure the vehicle is off and locate the low-pressure service port, typically found on the larger diameter aluminum line connected to the AC compressor. Remove the cap and attach the refrigerant can's hose to the port. Start the engine and turn the AC to the maximum setting, then slowly release refrigerant into the system while monitoring the pressure gauge on the can. Be cautious not to overfill and follow the manufacturer's specifications for the correct refrigerant type and amount.