Thnx, i went to the BMW stealer today. The first guy heard something but then somebody else came. This guy didn't or pretended that he did not hear anything, i drove around with him for 20mins but he said he could not hear anything unusual.
I told him that i was clearly hearing something rattling that does not sound right, he told me to make a appointment so they can have a look at it. Appointment is set for next week.
On the way back i clearly heard the rattling when i drove home with the ac and radio off. So i went to a independent garage which always helped me out nicely and asked some guys over there to listen, it took them 2mins and they told me right away its a vanos problem.
So my question is what am i going to do next week if they say they don't hear anything wrong?