On the highway today the check engine light came on and the up arrow that usually indicated winter driving mode started flashing. The car is now stuck in winter mode. The owner's manual says that this indicates a fault in the autimatic gear box. Has anyone else had this problem. The trans. fluid is maybe a little dirty but the level is ok. The car ran and shifted fine until this happened all of a sudden. I'm going to call the dealer in the morning, but they are 40 miles away. Don't want to burn up the tranny taking it to the shop. Car is a 2000 S40 with 115,000 miles. Any thoughts would be appreciated.