I have a 2010 (IV) and the screen stopped responding to touch, I looked it up and seems like a common issue in the 2010. I found a replacement screen on eBay for $300. (not allowed to post the link), it seems like its OEM. Or should I just go aftermarket with Pioneer/Alpine that supports Apple CarPlay. $300 for the replacement screen or $500-600 for a non-nav head unit?
I seem to have a similar issue. The screen shows the map and then will say "no map DVD installed". I have been looking for someone who has had the same issue with suggestions.