"Check Park Sonar" popping up after years of no bumper

I'm getting all these warnings about my rear sonar sensors not working, which makes sense since they are in my garage but they've been off the truck for years and I'm now just getting these. Is there a way to get rid of it or a fuse I can pull?

 

Is the button pushed for sensors?
I get the same thing on my 17, but they have to be turned on. I keep it off, as i don't have the stock bumper anymore. Occasionally I bump it though. The button is to the right of the steering wheel on the lower dash.

 

Yes, yes it was. Good thinking my friend