Q: Truck computer not recognizing key.

asked by on January 12, 2016

My truck will not crank. When the key is in the ignition, the theft light blinks fast and the truck will not turn over. I think it might have something to do with the computer not recognizing the key.

The Ford PATS (Passive Ant-Theft System) will react like this when the key is not recognized. The key not being recognized could be one of 3 factors, bad key, faulty PATS antenna ring, or a faulty PATS computer. Try all available keys first to make sure it is not just one faulty key causing the problem, then you may want to enlist the help of a mechanic, like one fromYourMechanic, to use a scan tool to interrogate the PATS system to determine the faulty component and recommend the proper repair.

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