On my '07 E70 I bought the Sirius unit from the Dealer, installed it myself with the same results. Had to take it to the Dealer for programming for the car to recognize it.

__________________
'10 X5 35d Titanium Silver
Saddle Brown Nevada Leather
Premium Pkg
Dark Bambu Trim
Technology Pkg
Heads Up Display
Sat Radio
Roof Rails
Heated Front Seats
'07 X5 3.0si
Monaco Blue / Beige Nevada interior
Premium Pkg
Technology Pkg
Comfort Seats

'02 X5 3.0i
Toledo Blue / Grey Nevada interior
Premium Pkg
Navigation
Comfort Seats
6 CD Changer