Just picked up a 2007 650i convertible. In the process of driving it across country and hoped to get the Satelite radio turned on. But, I can't find the radio ID. I called Sirius, they couldn't figure out where it is located. I stopped by a BMW dealer and even called BMWNA who both said I would need to make an appt. to figure it out. Seriously? It is definitely installed on the car, I can't believe nobody knows how to find the ID on the car!! Has anybody come across this problem?