well I managed to pair it with my 2005 E53 but 2 major problems:
1. the phonebook is not transferred to the car screen
2. once connected, the phone enters into a voice command stand by mode, ie it waits for me to say a voice command. most of the time i will not say anything of course, but it can pick up sounds from the radio or the dialog with the passenger as a command, therefore very bad
3. I have to press 2-3 times because I can dial/answer a call from the car buttons.

do you not have the above issues?