I have a 2006 f250 6.0 and when I bought the truck the parking assist did not work, so after owning it I've decided to dive into the issue and found that one of my sensors aren't working, no big deal I though and replaced the sensor. Still no dice, I checked the sensor in a different spot and it works but it seems I am not getting any power to the far right plug. Do the plugs go out sometimes or is it a bigger issue? Thanks Kyle

 

They just die regularly. I had them replaced a few times under warranty in my 2006 F350; when they died after the warranty was up, I just left them dead.

Same thing with my 2011 F350 - replaced while warranty was still in place, didn't bother after that. The 2011 has a back up camera though.