After an isolated incident in which water collected where it doesn’t belong, and an isolated incident in which water collected where it doesn’t belong, I’ve just had an isolated incident in which water collected where it doesn’t belong. Namely the passenger rear footwell

Turns out it’s a common occurrence on the E39 for the vapor seals in the rear to leak water into the cabin. How a failed “vapor seal” lets a cup or two of water in I’m not sure, but I’m not the only person this has happened to. Knowing this meant nearly complete disassembly of the rear doors, I figured this was a good time to tackle my nonfunctional passenger side front and rear windows as well. Since the general theme here has been how far I can stretch a penny when it comes to repairs *cough* $80 chinese radiator *cough*, I didn’t buy BMW regulators, I didn’t buy german equivalent aftermarket ones either, I bought “replacement” brand for $25 apiece. After swapping over some hardware that was of obvious low quality, and greasing everything that could possibly move I now have fully functional windows (which are no longer held up by duct tape!) I used RTV to reseal the vapor barriers in hopes that it does a bit better than the tar like substance that BMW used. Been driving around like this for a couple days through oregon monsoons and thankfully I seem to have stopped the leak (for now)

I also tackled rebuilding the headlights, which made a world of difference.

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Last thing I have to do is reattach some of the headliner, anybody have any suggestions? I was planning to go at it with some spray adhesive.