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What does the PCM control? Does it have anything to do with the interior lights?

(1999 Ford F-350 Super Duty)
in Portland, OR on February 16, 2017
I just had the PCM replaced and now the Door Ajar light is on all the time in the dash. The interior overhead light, the back window overhead light and the bed light also come on and when I drive away they go out until I have to stop for any reason.
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Popular Answer
on February 16, 2017
WD-40 usually works very well for this problem!
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