04 Explorer Backup sensors going off?

[ssalvi]

Every once in a while, my backup sensors are off...and I cannot turn them on, the switch does nothing. Anyone ever hear of this?

 

[Ronin8002]

One of the sensors is probably going bad. It only takes one bad one to disable the system. I had one or more go out a few years ago and haven't replaced it since.

The dealership can scan it and tell you which one it is.