I am have an issue with the tire pressure system. I had one sensor changed because of the service tire system soon displayed. The techs could not get there computer to finish the retrain because the computer would abort the process. This was after all sensors were accepted and the cars horn would horn for accepting the sensors. I just tried lowering the pressure in all tires and the display alternated between 4 tires low and service tire system. So the sensors all work.... What gives? This is an early build since the magnets are required.