My name is ***** ***** I will assist you with your question today.
I'm an independent contractor and I don't get paid until a rating has been made.
We can go back and forth as needed to help resolve the issue you are having. Follow ups are free after ratings, so rate in confidence!
You just narrowed it down. If the theft light is flashing when you turn the key, the PATS system can't read the key. Constant flashing means the PATS lost it's programming due to a fault in the system. You'll need the Ford IDS tool with programming to see what the fault is with the PATS system and reprogram the keys to the vehicle.
The module is acting up or the transceiver for the key is. There is not diagnostic steps you can really do for this without the Ford scan tool. That is the bad part of this.
You want a 5 star service and I want to provide a 5 star service. Please consider that I don't know your skill level as well as I can't see, touch, smell, hear the vehicle/machine in question. Please provide as much detail as possible and I will provide as much back.
Once an answer is provided, you should see a rating screen. Please rate my personal service to you. The ratings are my personal feedback, they are not the site feedback.
Thank you for allowing me to assist you through Just Answer!