Steve: Thanks for your comments. No, the BMW system is completely different than the way Mercedes does it, and is much simpler to understand. BTW, I can get the codes from my 635 Bimmer without any BMW propriatary equipment, although you can't do this with the newer ones. Sorry you took my comments as a "cheap shot" and I apologize if there was any offense taken. Certainly not intended. I am an M.E. by profession and enjoy doing my own work but I get a little miffed sometimes at the way the things are done these days. I recall something a Dealership owner told me a few years ago: "The only problem with those people in Munich and Stutgart is that they are knee deep in engineers". I guess I am still a believer in the K.I.S.S. philosophy! Thanks for your post.

Garry