Someone nearby blew a fart? I'm sorry, I have no idea, but 80%,,,well, thems Vegas odds. Stupid trucks today,,,I swear, I don't know how you drivers put up with that crap. I rented a new Kia, with info gee-gaws up the ying yang, I HATED it, and I wasn't about to try and disable it,( manual thick as a bible) you know, black helicopters, and all. My Jeep, the most advanced electronic gizmo is the seat belt warning buzzer, and that's the way I likes it.