Apple

My 2nd gen has started playing a random ringtone-esqe jingle every time I get in my car today. Before I even put the key in the ignition (my cars built in Bluetooth is fried, so it isn’t even paired to it). when I turn on the screen, it stops playing it, and I have no notifications. I haven’t done the most recent iOS update because of the forced notification tone change, I have not downloaded any new apps or changed any settings. Has anyone heard of this before?