Many Ford, Lincoln, Mercury, Mazda Vehicles store the PATS ignition key info in non-volatile memory on a separate module; the problem this video covers can be generalized for each of these vehicles.

This case looks at a 2008 Explorer 4.0L which stores the PATS key info in the instrument cluster. The truck was running but had an injector driver failure on one cylinder. The PCM was replaced but the security parameter reset and key relearn would not complete correctly.


tl;dr instrument cluster is f'ed.



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Integrated Automotive LLC in Minnesota.
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