It's not that hard to drop the valve body out but means removal of the sump.
There are a few plastic balls in the plate and some rubber parts so a dunk and drain may do more harm than good?? (Possibly)

If your dealers are anything like ours then they will not touch the Auto gearbox for fear of mucking it up!! They appear to be scared of their own cars.

See what we have to contend with????

I have really lost all trust in my local dealer and only ever take my business to them as the last resort.
They treat me like a second class citizen and think they are higher and mightier than us and think their excrement doesn't make any wafting unpleasentness......


Good luck though.

If you have an independant BMW mechanic with trans experience, definitely take it to them.

My local BMW dealer is good, but the independant shop has the same laptop w/ software, is very reputable and is less expensive. I do like getting the free loaner from the BMW dealer, but that alone is not worth going there.

I could kick myself - my yellow 4x4 DSC light lit up a few weeks ago, I thought it may have been a sensor covered under CPO warranty so I took it to the dealer. Turns out it was a simple recalibration - software only - and it cost me $100 at the dealer. I'm sure my indy mechanic would have done it for much less.

probably not

Had the same issue @ 100k on my x5. Transmission fluid change, filter change, and reset adaptations cured my problem.

Pull the battery connections tonight and let the cables sit touching each other overnight. It'll give everything a little reset and learn your driving habits all over again.

How is that any different than the gas pedal reset? I'm going to do a tranny flush first and get some new fluid in there, along with transfer and differentials.

You can do that too, I just lilke giving it a fresh restart once in a while...like resetting my PC always make it feel snappier afterwards.