We have a 2011 Overland that we bought last weekend with 16,000 miles on it, it was a program car. When we first start it up, the display comes up with " ACC/FCW Unavailable Service Radar Sensor". It stays on for about 10-15 seconds then goes to the speedometer. Everything seems to work okay. The Active Cruise Control and the Back Up warning works. We asked a salesman at the New Jeep dealership and he thinks it is a warning light that is supposed to come on when starting but he did not sound convincing. Is it? Thanks