I got this warning on my dash so when i got my plugs changed out i had them check it out they say 2 of the 4 sensors arnt working properly. So im like on thats fine as the reverse sensing system is covered under my ESP warranty. He tells me its not covered and it will cost 950 bucks to replace them. Im gonna call the ford customer service number and hopefully they can help me out. anyone ever got this fixed on ESP?