hi all, I know this has been covered so many times but that's why I'm a little confused, so sorry if your going 'not again' and I've looked at so many threads that I'm a little lost. I have a 2007 A4 and it has the phone holder ( less the cradle) on the dash, mfsw, the shark fin on roof and the Bluetooth module under the drivers seat code 8po ending in H. My problem is I can't pick up any Bluetooth signal on my iPhone 5. I've done the procedure that's been explained and tried iphone 4 & 3 with no joy. The only thing I'm thinking is (1) do I need to upgrade module (2) do I need to activate module or (3) is it broken. Any replies would be welcome thanks