Originally Posted by k Wang (Post 1338003)

I have a 2005 545i and had the similar problem. The dealer found the problem and replaced the "Mechatronics unit". After that, the problem solved.

Originally Posted by Amir545 (Post 1338011)

I had the same problem and just fixed it! cost $1100.
Mine came from doing too many doughnuts and attempted drifts!
Its was my rear diff! the gearbox was messed up and there were pieces flying around in it! I got lucky that it didnt effect the tranny cuz that costs around 5k!

good luck!

Originally Posted by JR's Bimmer (Post 1338063)

I have the same problem on my 550i. It kicks from 2nd to 3rd and from 3rd to 2nd and 2nd to 1st (Sounds confusing as hell, I know...lol) I've taken the car to the dealer 3 times already. The first time they did a program update and it fixed some of it. The second time they replaced the mechatronics which also fixed it a little but you could still feel some kick. The third time they told me that BMW approved a new tranny, so that's where it's going tomorrow. Hope you get it all fixed.

Originally Posted by carlos916 (Post 1338117)

how did they diagnose it? my dealer said the only way they can diagnose something is if a light comes on ie. transmission light


LMAO.. i was thinking of doing the same that way i can get a fault but i didtn wana break n e thing else.. n e ways the tanny is acting up and i didnt even do anything :P but yeah ill just have to sit and wait to see what happens


wow.. keep us updated.. hopefully everything works out as well.. also how did u go about getting everything diagnosed? did ur transmission light come on?