I have a 1998 M3 Convertible A light on the dash that seems to be for the convertible top is now staying on all the time. The indicator has a triangle on the left side and a solid rectangle to the right, both connected by a line running from one to the other underneath. I thought: is it telling me something about my convertible top not being down? The owners manual doesn't even show what the light means. Please let me know if you know what it means or what I can do to fix the problem. Thanks Sam