Today I noticed the CarPlay clock was showing the correct time zone (MST), but the car was showing CST. My wife was on a road trip in the CST time zone but returned 2 days ago. I would have thought the car would set itself - do I have to change it manually?
You can set the car's clock using GPS settings rather than manually adjusting it. The settings for this are on the Multimedia screen under Settings>Time. If you don't do that, you need to manually manipulate everythingee page 53 of the Multimedia manual.