Methinks we have found the answer for the OP. My '08 has NO bluetooth issues and my iphone syncs with the car and the dash phone perfectly.
Originally Posted by politby
If you have the Professional phone in a 2005 facelift you cannot pair with your phone. The Bluetooth pairs only with the handset in the front drawer, BMW implemented a crippled Bluetooth stack in these TCUs. The facelifted E65s did not get full BT functionality until Sep 06.
You need to replace the TCU with a post-Q3/2006 unit.
Sent from my GT-P7500 using Bimmer App
2008 750 Li Alpine White/Creme
The economy will get worse before it gets worse.