Called Jeep US and they agreed it should go into the dealer in Bradenton for a code read to see if they can determine the problem. It goes in Friday morning. They wanted it in early in case whatever they have to do takes the whole day (hard to imagine).
Today the warning flashed again and when I reached a traffic light I was able to put it into 4WD Snow (but set it back to auto and didn't drive in the snow in FLA
. Then a few miles later it flashed the notice again and at the next light it would not go into 4WD. This continued off and on all the way home.
I'll report back Friday on what they find.