back up sensors, door locks, cruise control

I have an 01 excuresion, the back up sensors, door locks and cruise control have all broke does anyone know what is wrong? Also the cam sensor has failed for the 2nd time in 2 years. :disappoin :banghead:

I have a 2000 and the back up sensor was bad. I did take it to a ford garage and they told me one of the 4 sensors was bad. i replaced one sensor ( the they told me) and that fixed the problem. took 2 minutes to switch, there is a small clip in back of the bumber. ggod luck