A few days ago, the buzzer went off when I inserted the key. The only problem is that it never went off after the initial engine start and it continues to go off constantly. Any advice would be great! Thanks!

You have a bad switch or fuse... power is going through the fuse box after shut off for something.... check your accesories or even your fuse wires.... busser will eventually go off

I checked the switch for the door, and that had nothing to do with it, so I removed the buzzer from the fuse box. I'll get a new buzzer unit and check to see if that's the problem.