The vehicle is a 2004 Expedition, 2wd, 5.4 liter. The backup lights and the reverse sensors are not working. I believe both problems happened at the same time, although I didn't notice the lights being out until a couple days after the sensors stopped beeping. Not that they were working for those couple days, I just didn't notice they had gone out.

I tried looking at the in dash message center, but there are no messages and could not find any message having to do with the sensors. I had heard they can be turned on and off there but was unable to find that option. No lights came on indicating a tripped code.

Any ideas? Thanks in advance.