It used to be only one door but now all four doors creak loudly when they are opened or closed. I had the dealer lubricate the doors once but it did nothing to reduce the creaking noise. This leads me to believe it may be something other than the hinges, like maybe the wiring harnesses rubbing or something similar?

I am curious to know if others have this problem and what the solution was/is to eliminate the noise.

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99 ML430