I occasionally have a problem with our 2011 Touring model - the backup camera does not work, and the front and rear bumper sensors stop working - the display shows all 4 in red. Neither restarting the van nor turning the sensors on and off gets rid of the problem. From what I can tell it just goes away on it's own. I can't find any postings about anyone else having the same issue and of course the dealer looked at me like I was crazy when I was trying to describe it - told me "they need to see it to diagnose it" and of course I'm never close to the dealer when it happens! Has anyone else experienced this issue and if so, is there a way to "reset" the backup system to get it to work again rather than just waiting for it to go away?