2001 ml430 on 2001 Mercedes-Benz ML430

when i start to drive, around 10mph my doors lock and unlock and lock again. evertime i stop and go. is this due to a bad door acuator. are they all connected, is it because it sees the door unlock, and flips out? thank you

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1 answer
I have to ask one question and when you answer it, you may have it figured out. Does only one actuator go up and down very fast,(machine gun effect) or do all of them? If only on is doing that, then it is most likely the bad actuator. Usually the driver's door latch is the culprit since it is used the most. The actuator is part of the latch, so the latch will need replacing.