Got on the bike to take a quick ride the other day and the wind screen would not move - completely locked up. I tried the usual tricks (battery disconnect, hold the raise / lower button for 10 seconds etc.) Nothing worked. This happened to me a while back in August of 2018. The dealer had to fix it both times. I believe they connect it to their BMW diagnostic computer and clear the fault - for only $60. As I said this is the second time this has happened, at $60 a pop, I've almost spent half of the price for a GS 911. The service manager say that BMW does not have a service bulletin on software update on this & he has seen this a few times. The cause has something to do with a combination of the wind screen height / GPS mount position and the ignition switch position. What is the magic combination that causes this problem? I think a software update could be installed that would prevent is from happening?