I replaced ecm with a used one . How do I program key to operate the new ecm ? The car will not turn over

Asked by Sep 25, 2016 at 02:25 PM about the 2003 Mercury Sable GS

Question type: Maintenance & Repair

3 Answers

26,635

You have to reprogram the new PCM with the Ford scantool, performing a PMI or "programmable module installation." The info from the original PCM is downloaded into the scantool, then programmed from the scantool into the replacement PCM. You'll either need the scantool and knowhow to do the swap or let a shop with the scantool do it.

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Is there any other way to make existing key i have work with replacement computer. A way to program key without scan tool

26,635

No, the new PCM needs to be programmed to accept the old keys.

1 of 1 people found this helpful.

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