I don't have an answer to your problem but I have a question that may help. Why would you switch the car out of gear into N after turning the engine off? The manual that comes with the car on page 56 states to leave the car in gear when turning off for SMG. Maybe leaving the car in gear after turning the engine off and only putting the transmission into N just before starting would solve the problem. Just a question and suggestion that might help.
Ken
Ken