Originally Posted by Ben's 545i

Update!

Well, you can look at page 3 for the issues I experienced with my transmission. Pretty much had a bad repeating slip/slamming at low rpms between 35-40 mph. I experienced a couple really rough ones (felt like the rear end may lock up) but mostly a light slipping sensation.

So, i've had my new mechatronics unit in for about 2 weeks now. I've put a bunch of miles on it and it seems to have taken care of the issue I was having. It sounds like many others seem to be running into issues very similar to mine. I hope this info helps everyone out. As BMWNA logs more of these issues maybe it will be easier to get repairs goodwilled. The problems seem to be becoming more prominent.