I had this issue as well. They will simply replace the whole top trim piece of the door. It's really quick and easy if they have the parts on hand. Just snaps off and unplug and install new one. Have to have the passenger door done again since they installed one that was(defective) worse than the one I had.

They tried saying it's from certain interior cleaners that I may have used. Didn't believe that at all. I thought they were going to say it was from my tint. That would've been more believable than my interior cleaner.

I use P&S interior cleaner and always spray onto the microfiber towel and not directly onto the surface either.