I had a TTS with DSG and mechatronic problem, booked car in, 'no faults Sir'
I parked car outside and asked the Service manager to reverse it into a parking bay, he looked at me as if I was an idiot, jumped in my car, selected reverse, looked down at the selector again, loads of rpm and the car shot off backwards nearly into the door of a new R8
They fitted a new Mechatronic unit

I parked car outside and asked the Service manager to reverse it into a parking bay, he looked at me as if I was an idiot, jumped in my car, selected reverse, looked down at the selector again, loads of rpm and the car shot off backwards nearly into the door of a new R8
They fitted a new Mechatronic unit


Apparently anything 4.5mm and below falls into an "amber warning" category and triggers the recommendation they're replaced.