My coupe goes beep beep

[Alt.ImaCoupe]

So I was driving along today, and I heard two short beeps from what sounded to be the instrument cluster. About 15 secs later, another two beeps. No warning lights, or alerts...nothing. I was cruising on the highway at the time, so it wasn't a matter of the key being moved, or doors unlocking or that kind of sound.

My suspicion is that it may have something to do with the bluetooth on my phone. Although I've never heard it before. Anyone...Bueller..anyone..?