On my 2012 f250 the back up alarm obviously goes off when I have my boat behind me in reverse. For some reason there is no way to disable this alarm. I’ve saw on some trucks is come up on the media screen and some truck it come up on the dash. I have nothing coming up on either. I also cannot disable my seatbelt alarm with the sequence I’ve found of plugging and in plugging the seatbelt. I don’t know if these are tied together or not. Any help would be appreciated.

Left side of the steering wheel.
Hit arrow down then “ok.”

That shuts off my alarm when backing up with the tailgate down.

that doesn’t work on mine. All that does is scroll through the normal menu options