Hi. My C220 has started developing a starting issue, I pulled up at a level crossing turned off the engine. When i tried to restart it i turned the key and there was nothing not even a click. Played around with the gear lever knocking it back and forth and about 20 minutes later it started, drove home without an hitch, got it home turned it off, turned it back on and it started straight away. I moved the gear selector throught the gearbox a couple of times turned it off and now it won't start again. Can anybody shed some light on this problem. Thanks.