So I just picked up a new SR Midnight Edition last week, and a few days ago I've been noticing this very faint beeping sound that comes and goes maybe every minute or so. I can only hear it if I have no music or no other noise going on in the car. I have no idea what it could be. No lights are on or anything.

The only thing I can think of is the dealership gave me a damaged sim card so I don't have navigation or anything at the moment. I wouldn't think that would trigger anything, but who knows. I'm stumped...