I must be missing something. Let me start at the beginning. My car is a 2004 X5 ordered with a telephone and nav. When I picked it up some story about the telephone module being changed and they did not install it, as it was in the middle of a upgrade. When I looked under my cd changer is see a ULF that according to the serial number has Assist but no bluetooth. So I swapped out for a newer TCU from a 2005 M3 that had the same connections. Bmw assist works but no bluetooth. Maybe the factory left something else disconnected. What should I look for. I do get the activate phone message when I press the speaker button or the R/T button when the key is in position 2. Incidently when I press either button I get no beep. Does that mean something? Or is there something not connected that I should be looking for? I appreciate all the help..THX