I went through a series of head scratching episodes over the coolant level warning on the OBC. This is the link to my story.

http://www.maxbimmer.com/forums/showthread.php?s=&threadid=37216

Hope this helps anyone with this problem.

BMW says that over 60% of the returned sensors were not defective but the float was just sticking in the down position.

dark_islight

Hey dark_islight . . . .