Typical errors of the individual sensors such as speed or speed sensors as well as the solenoid valves of the most commonly used control units from Audi, VW and Mercedes can be fixed at a fair price without having to replace the entire control system. After a thorough diagnosis, we are able to determine if their controller can be inexpensively repaired. After our repair, there is no need to reprogram or code the transmission control unit, which in turn significantly reduces repair costs and time.