All,

Thanks a lot for all the comments and advices. With your help I could identify the problem: frozen water in the cable connecting the handle.

I also found the relevant posts with the explanation and repair guidance here:

http://www.xoutpost.com/bmw-sav-foru...n-problem.html

Xoutpost.com - powered by BMW X-sav Enthusiasts!

(for the desperate ones in the same situation during this winter )

Thx again,
I love you people !
Tomas