Hello have a problem with my Smart 451 year 12/2007 1.0 71PS 113 TKM the first few m drives and switches the car perfectly, then it goes on fault and it switches e.g. no more into the 3rd gear and the 1st gear. Or with a new ride no longer into the 5th gear neither manually nor in automatic mode. I also noticed that the error ( i.e. the fault ) always occurs when switching down. Up to now it has been renewed: The clutch actuator incl. adjustment, I checked the supply lines from the gearbox on (screwing positions etc.) the GSG looked at me, as far as everything normal and nothing eye-catching. Error codes were read out : P1903 Switching process implausible P1800 Adaption Faulty P0914 Switching control P1901 Switching process P1801 Gear control P0914 Gear selector sensor These were all errors that were saved and also after the error imer appear immediately. Now my question: clutch? Switching motor? Gears? Am I already making a beautiful Sunday tomorrow and expanding the gear, however, I probably have to remember the fact that Sammy will not be able to see your fault.