thanks. i dont know how long the gauge has been on the car I bought the car used. I will get ahold of the previous owner tomorrow. I was just wondering can the dealership hook the car up to computer and fix the car. I only have a year warranty and I dont want to damage the motor. since the car is under warranty I wonder is best to take to mercedes dealership than chrysler. I would like to know what can fix the problem so I can tell the dealership. I live in KY and no one knows about these cars.