Lunging when accelerating after a stop
I have a 2012 X6 3.5 which I bought used with about 13000 miles on it. From day one, it has tended to jump/surge/lunge when taking off from a stop sign. If I were to come to an absolute complete stop, drink some coffee and then take off, it can be relatively smooth if I were to "feather" the accelerator. If I come anywhere close to an incomplete stop, it is basically impossible to take off smoothly. I have done the throttle reprogramming sequence to no avail.
I sat on this for a while, thinking I would mention it on my next oil change. However, I had some time today, so I took it in. The SA and tech went for a ride with me and recognized the issue. They thought that a simple reprogramming would fix it. I spoke with him tonight and the reprogramming made the issue so much worse that my car is now undriveable. As luck would have it, the crew from Germany was visiting today and they are puzzled as well. They are studying up and talking to Germany tonight.