THIS IS A SERVICE WHERE YOU SEND YOUR ECM TO US Service for deleting PATS from 1996 to 2005 Ford Engine Computer. Diesels may incur an additional charge. If wanting to purchase this service for a Diesel use the following link: Diesel PATS Delete Service PATS stands for Passive Anti-theft System...
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I don't have statistics to back up the following statement, but unless something unusual happened, the most common cause of PATS preventing starting is the transceiver module around the ignition lock cylinder failing. It is not coded nor any programming needed, is a simple plug and play swappable part.
Heh, when someone's first post is how to disable a vehicle security system, without much (or fishy) background reasons why, I always wonder if they're trying to steal it.