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Old 07-01-2010, 06:21 AM
split71 split71 is offline
Officially Welcomed to the 'Fest
Location: Port Orange, Fl
Join Date: Aug 2007
Posts: 140
Mein Auto: '15 428, '11 X5d,
Originally Posted by Ben's 545i View Post
I wonder if some people are saying tranny in general terms but the dealer actually only did a mechatronics swap? Maybe they are getting whole rebuilt units because the dealer doesn't want to deal with the hassle of tearing into the tranny case and instead just drop it and put whole rebuild in?

My tech told me that having an actually gear issue is an extreme rarity. The mech unit does most of the work changing the gears. There's a bunch of valves and a whole lot of electronics that are always working. They usually don't do anything to the gears on rebuilds anyway. They usually rebuild the valve bodies and seals and that's what the mechatronics is.

I'm glad more and more people are getting good results with complaining about this and getting the right fix. I hope they are all logged in and BMW starts to take notice of the problem. It's got to be something with this ZF tranny because a number of us all have the same issue.
Good question, I wonder if it's because there's really two different issues? I have never experienced the 30-40 mph jolt, my problem was strictly the 2-1 downshift at low speeds coming to a stop.
The problem was repeatable every time you came to a stop. Even after programming changes, the problem was repeatable. Fortunately, this makes it easier for the dealer to resolve...

Most automakers are replacing transmissions instead of risking repairs that might not fix the problem due to bad diagnosis, IMO.

I guess getting a list together with the specific issue and resulting repairs from board members might shed some light on what's really happening.

I'll post the details after I pick-up the car either later today or Friday.
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