The guide on my Backup Camera (green,yellow, red) stopped tracking with the curvature of the white guide (now it is barely visible). I looked in the manual and it says it goes away when a trailer is attached. Only thing is I have no trailer-- not even a hitch for that matter. Not a huge deal but it is helpful to have and it'd be nice if it worked seeing as I got the Transit a couple days ago. Anyone have any tips? Thanks!