Annoying safety belt warning

I've read in the manual how to shut off the safety belt warning beeps, because for some reason Lincoln decided not one beep was enough (plus flashing man with belt sign), but they insisted on having it beep intermittently for FIVE minutes. Insane. Anyway, i've followed the 11 hundred step process to disable it, yet it remains. Has anyone else had this problem, or cared?

What year?

BeltMinder was dealer-only adjustable in 2000, IIRC. Mine doesn't chime at all. I wish it did. It should shut off upon buckling-up.