Jochen,
I just got an SSS v26 that has the key coding option for BMWs. I can code everything listed on this page
http://www.e38.org/E38-Options.pdf
One thing it does do is recodes everything on the nav to default USA settings. I did the unlock all doors with one key press coding and it set my nav to USA mode. I can not remember if I set the "mecca mode" on the nav setting as I was not sure what that was.
Let me know what you need me to log if anything.
I really want to turn on the feature to have one button press roll the windows UP, like I have seen in a Euro BMW. I have the one button press DOWN in the key coding, but not UP.
I am just starting the learn this tool, so bear with me on asking me to log everything.
Martin
P.S. I am sure I will be asked; The software tool was $1500 and included DIS V49, V39, SSS V26, and the coding tool for OBDII or under the hood