My smart fortwo 450 diesel 2006 had problems with actuator and would get stuck in gear or neutral. We did a fix by welding a washer close to the tip of the actuator to increase surface so it does not go through and get stuck. Now it is shifting normally. However as soon as I move forward, break and release, i do not hear the usual 2 clicks and yellow triangle and three bars appear on the dashboard. But the car keeps driving and switching gear even if it does not know what gear it is in (me either unless i count). Also the hill assistance is not working, possibly cuz it doesn’t know that it is on first gear. I’s like it knows to engage and switch gears but it doesn’t know what gear it is at. Anyone had this problem?