For some time now I’ve had the problem that the reverse gear can’t be used again and again. In the last year it happened again and again, but irregularly. I was able to limit the problem to a certain angle, I said I could put myself in a certain place, which was not very flat, where I got 5x in a row the problem and if I tried it 10 meters further on the straight road again, it worked again. So I assumed that it could be due to a fluid, because otherwise a inclination on the vehicle should have hardly any influence. So times the gear oil changed and actually the problem over now did not occur again. Not a single time. For a few months now it piles up again. In addition, I also have a flashing tool key in the display and for the first time also an error message “-6”. That I did not yet see yet again. The problem then accumulates again and now very often occurs. Maybe still another observation – if the engine does not run, can not be quickly changed the gears, which is not heard at all times and then the problem is not shown again.