Hi Kustjag,
check out the following page...
http://www.bmwusa.com/Standard/Conte...iaGallery.aspx
watch the movie 'Sport Package X5". At the end of the movie, there is an explanation of the 'Adaptive light with corner light'
Maybe it helps you to know, your system works correct or not. In US the Adaptive light is Standard, unfortunately not in Germany. We have to pay roughly 700 US$ for that feature.
Good night
Andy