Where is the AC low pressure port on a 2006 Ford Five Hundred?

The AC low pressure port on a 2006 Ford Five Hundred is located on the accumulator, which is situated on the passenger side of the engine compartment. You can find it near the firewall, close to the front of the vehicle. The port is typically marked with a blue cap for easy identification. Be sure to check the vehicle's manual for specific diagrams and additional details.