I think I have my ISTA install complete, but I've yet to test it.
This weekend I took the rear drivers side door panel off to check the condition of the vapor barrier. I was getting water build up between the 2 door gaskets. Sure enough the vapor barrier was loose and leaking at the bottom. I remelted the adhesive with a heat gun and jt seems much happier now. I may still pull the carpet up to make sure it didn't get more than damp.
In the process, I seem to have confirmed that I have an issue with the vehicle battery. More details on that here:
https://xoutpost.com/bmw-sav-forums/...resetting.html
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2009 xDrive35D
Comfort seats, Tech, Premium, Cold Weather, Sport w/ Adaptive Drive, Extended Nappa Leather
Deleted & Stg 2+ Tune for over 115k miles
227k on the clock
Being replaced by a 2016 X5d