I've had the same issue. Got the car two weeks ago, bt audio worked fine for about 2 days. Then it stopped and I can't get it to recognize it again. Latest iOS, etc....
2016 Individual f80 M3 - August 27th Euro Delivery
2012 MR e92 M3 DCT, fully loaded... GONE but not forgotten!
2008 e92 M3 Coupe 6MT | AW/BLK Extended...SOLD!