Mercedes Benz repair: Mercedes S 320 SWB, mercedes s 320, mercedes dealer

Question
I have a Mercedes S 320 with 190000 mile on it and the problem I've been having for about a year, is when I driving its sputter or miss fires and the car seems have a spark out.It don't do it all the time but most of the time. So I found out to clear this problem, I would have to shut down the engine and restart it an the engine will clear up and run fine until it happen again, then I would do the same procedure. Please help!!!  

Answer
Answer:
Take it to the nearest Mercedes dealer for a diagnostic scan.

The STAR scan tool will find more exact data than any generic unit, this means less time to repair, and accurate diagnosis the first time.

There is nothing I can say without codes.