I think mileage is irrelevant but it has 10,000 miles on it. The car is 8 months old. Only the last 2000 are miles I put on it. Yes, it's Bose and it's the upgraded PCM with Nav.Hope 2016 units are better. I don't have a dealer anywhere close, and since all are in a different state, no loaner for me. Hope my car is not saddled with something like this. But made the decision to buy it knowing it's possible. Even after driving it for only 100 miles so far, it was a good decision. He he. Good luck, and hopefully that was it. Wonder what could have been wrong with it. How many miles on your car? I assume you have Bose, right?