I recently bought a 95 2.5 diesel which has several problems. My current problem is the message center is frozen with mileage (kilometers) and fuel efficiency. Thats all it displays... When i get in, when i turn the key, when the engine starts. And the mileage and efficiency dont change with driving. I also, obviously, dont get warnings or any other info. Any help as to where to start would be appreciated.

Thanks,
Mike