I also figured out how to stop the annoying beeping of my seatbelt light. To clarify on dashboard between the RPM meter and the speedometer there is a light that stays on if you do not have your seat belt plugged in. It will beep when you get in the car to remind you. However on Tuesday it decided to beep every 2 seconds. I searched online and found this which led me to unplug an unknown plug from a Grey box under the dash. And VOICI, the beeping stopped!