Parking assist sensors
 

I have a 2001 F250 that has the parking assist sensors in the rear bumper. I noticed that they stopped working and the off light on the button on the dash was lit up. I check the sensors and found that the far right side sensor was not clicking,so I replaced all four sensors. This fixed nothing. Can anyone offer another suggestion.

ttt....

there will be code set in the module that controls its operation. you will need a full function scan tool to read the codes. a cheap scanner that reads only powertrain dtc won't read them.

Agreed...