Parking sensors

Just noticed something on my truck.
The front parking sensors activate when I release my brake pedal from a full stop. They go off after I travel a few feet.
The sensors on the bumper.
Electrical?

 

Mine did some weird stuff after a big rain once, then returned to normal after everything dried out.

Have you had rain there?

 

Maybe they're coming loose inside the brackets? The plastics become brittle and with movement, they may shift in the brackets and cause them to go off.. this is an assumption as we only know what you've given us. One of my sensors was loose and in my inclined parking spot it would be set off with slight movement. replaced both brackets and they've been quiet ever since.

 

No rain to speak of.

When I come to a complete stop then accelerate it comes on. Nothing loose or broken that I can see.
Seems like a connection.

Let me check wire diagram.
In case it is just bad sensors anybody have info on where to purchase them?