Clutch problem Smart Fortwo 451

Hi Schwarmwissen. Have a small problem with my Smart ForTwo 451 semi-automatic HSN: 1323 AHM Bj2009 , the actuator of the transmission sporadically does not separate the gears properly when starting up and then chokes itself afterwards. 1-2 weeks he drives without problems, and suddenly it can happen that he starts stuttering and hopping at the next red traffic light until he finally strangles himself. So the error occurs when only starting/braking in the first gear. After that a driving is possible only as soon as the error memory is deleted again, otherwise this self-shrifting repeats again and again on every occasion. (defect delete problem temporarily away). Error memory says clutch problem sporadically. Akkuator has already been changed and coupling, restocking, as well as withdrawing pan can be ruled out so far. Do you still have a problem in the electrical system. Did you have such a thing or a tip that I can still look at. If someone comes to a switch-tom plan for the battery controller and further battery controller?