Where did you get the nav from? Did they offer any warranty or guarantee? The faceplates are not sold separately and you will have to send the radio in for repair and it would probably cost around $500 or so.Hog_cts said:I installed a Nav in my cts which came as a non-nav car, and now some of the buttons don't work. How can I get a new faceplate? Please help! It sucks not being able to work my nav or radio!