Thanks for the link. It is actually:
MINI.com - Bluetooth
I didn't have this document, but it doesn't really help as I have a Nokia E61 which isn't on the list. My bluetooth connection works fine, with only an occasional error on the phone when I switch the car ignition off - no bother really.
I just have a blank 'adaptor' in the armrest with a single button on it. I don't need to fiddle with it I suppose as my phone works fine as it is, although a charger might be handy.