How do you deactivate anti-theft on Ford 500?

To deactivate the anti-theft system on a Ford 500, use your key fob to unlock the driver's door. If the system is still activated, insert your key into the ignition and turn it to the "On" position without starting the engine. This should reset the system and disable the anti-theft feature. If issues persist, consult the owner's manual or a Ford dealership for assistance.