I have somehow similar problem. My bluetooth telephone connection is gone, phone cannot find my car (2008 M3, i-drive) and my remote door opener quit too. I have no idea if this is the same problem, or just two separate ones.
Power door lock switch inside the car works, and I can lock all doors turning the key, just the remote quit. I don't thing that's battery problem, since both remotes quit working.
Any ideas? Does bluetooth have its own fuse? Which one?
Thanks for any help.