This has been a known defect on early Mercedes 7G Tronic trannies, but as I had googled Bmw Mechatronics there are a lot of threads about this in the 3 and 5 series forums.
Bmw mechatronics in laymans term is "valve body" or the mechanical/electrical brain of the transmission. It usually takes 2 hours to remove/install as it does not require tranny removal, you just need to lift the car and work underneath.
Bad thing is this part costs $2500-3000, and realoem says its a "rebuilt component" at that so there must be a lot that's failing but never discussed on this forum. Bmw part does not list a brand new component at this point
|