I had the same problem with my razr a while back. It took a couple of weeks of just trying before it finally worked. I just kept at it. If memmory serves me right I think I had to turn the phone off completey then back on and put the car's ignition in position #2. I essentially followed the instructions from an older post in this forum. Good luck and I hope it works or worked for you.

__________________
-2006 E53 (X5 4.4) Titanium Silver, fully optioned (sports package, premium package, navigation, ride height adjustment, panorama moon roof, rear climate package). Aero kit installed plus set of staggered 20s with Diamaris tyres.