Transmission Faulty message. There was a post right above mine, but it has been moved or smth. Today the fault has not shown itself but when i start the engine at times it feels like i've been rear-ended, though the car is in Park. Diagnostics reveal that the trouble is caused by mechatronik unit, but I just don't want to believe this. there must that can be done to solve it by not paying 3000 $ for it. When the fault message is not poping up the car goes perfectly. When it does - the tranny won't shift up until restarted. Only happens when i start the car, never in motion