The engine sounds healthy, does not smoke and the engine control light is not on. The car does not accelerate almost at all and even tractors can be overtaken only with a little bit of running. The consumption is just over 6 liters according to the display. The only thing that is striking is that the ABS and traction control warning lights are permanently on. Is there a way to find out what is going on? * Could it be a non-functioning traction control, or is it nonsense? * How can we proceed without swapping any motor sensors on suspicion? * Are there common suspicious problems that bring this problem with them? We would be very grateful for any help. I have found nothing really useful in the search so far (especially not for lack of engine power if necessary). something to do with the ABS control unit …)