There isn't a readily accessible "charging port" in the traditional sense for the A/C system on a 2005 Ford Freestyle (or most cars). The refrigerant is added through service ports located on the A/C components themselves, usually low- and high-pressure ports. These are accessed by a qualified technician with specialized tools and equipment. You won't find them under a cover or easily visible; they're typically near the compressor or condenser.
Do not attempt to recharge your A/C system yourself. Automotive A/C systems contain refrigerant under high pressure, and improper handling can lead to serious injury or damage. Take your vehicle to a qualified mechanic or A/C specialist for any refrigerant recharging or repairs.
