Evening all, I've been having problems with the gearbox on my car for a while now, however I will start from the top and hopefully you'll be able to see where I'm at now. Originally the gearbox was playing up, loosing drive, limp mode etc.. This was down to a faulty speed sensor on the conductor plate, which I removed and sent off to ecu testing to be repaired. Once I got the conductor plate back, I reinstalled it to the gearbox, with a new filter and fluid. I Cleared the codes and went for a drive, the gearbox was back to normal. (When I say normal, I mean it wasn't going into limp mode, or getting stuck in gear or loosing drive anymore) Then the turbo actuator decided to stop working, so I got another one of them and fitted it, now the car was driving pretty well, lots of power, still however the gearchanges were a bit off. From doing alot of reading, I found that the problems I was experiencing could be from not resetting the gearbox and then doing an adaptation, after getting the conductor plate repaired. So I used my diagnostic computer, a Delphi Ds150e I think it is, and proceeded to reset the transmission and torque converter adaptations. Then I tried to set the torque converter lock up adaptation. This is where the problems began , since doing this, the car now feels like its slipping the transmission quite a bit, and when driving steady at anywhere between 40 and 70, if the revs sit at around 12-1500 for a few seconds the car then starts bumping 3 or 4 times in quick succession, which I'm assuming is the torque converter trying to engage. I'm also getting a noise that sounds like turbo flutter, when the car slips and then changes gear, I'm not sure if this is the torque converter making this noise or not. Anyway, by trying to get rid of one problem, I've created another! From further reading, it appears there is a software update for the gearbox, that addresses the problems I was experiencing (Changing down to 1st while still moving slowly, harsh 1-2 and 2-3 shifts) Can anyone please help me get this sorted, I have the car booked in with Mercedes, but when I Said to them I would like the gearbox software updated and the torque converter lock up re-calibrated, I was initially told there is not an update available and the need to do a diagnosis first before they can say if there is an update, or re-calibrate anything @ £176 per hour! If anyone can shed any light or knows anyone who would be able to help in the Essex area I would really appreciate it Thanks in advance, and sorry for the long post!