Just picked up an 03 MDX

One issue I'm trying to sort out is that the climate controls grey out sometimes on the navigation screen. The physical buttons are still functional on the dash but you're limited on what you can control without the climate controls on the navi screen. When the climate controls grey out the outside temperature disappears as well.

As it's an intermittent issue, I'm thinking that I've got a short to track down somewhere. However, I want to see if anyone has any insight on this issue before I go digging into things.