This happened to me today. Visited sis and on my way home, the center screen (and only center screen) popped up with a "car needs service" message. I promptly stopped and headed back to my sister's in case it was something bad. Center screen was unresponsive. I did a reboot and everything went back to normal, so I drove home without a problem. Now I wonder if it will act up again for mothers day.
Just place a service call and they'll analyze the logs and get back to you in a short time (30-60 minutes has been my experience).