This auto box had the problem that the engine would rev up before upshifting through the gears. It was repaired by an auto box expert and the car ran well for about 500km. It is now running in 1st or 2nd gear and will not change gear at all. The auto box place says their work is ok and the problem is the communication between the ABS, the computer and the gearbox. The car is an E280 Elegance. Has anyone had, or heard of a similar problem and can offer advice on where to start looking? I am a mechanic but have never worked on computer controlled automatics. Thanks.