Hi,
I had a post in this section about my 2010 Phaeton. My fix to the Air flow problem was putting a divertor in the Air duct that goes the full length of the coach. I found that no matter what A?C unit was running the output went throughout the coach, thereby never cooling the front, which is normally the warmest. Closing doors will not solve the problem. EMail me if you would like to discuss sdemino@gmail.com
Steve