My s212 e63 threw a wobbly today. There was suddenly quite a lot of vibration thru the drivetrain under medium acceleration. Engine light has come on. I pulled over, stopped the engine and before calling recovery I decided to start it up again and check under the bonnet for anything obvious. Engine started ok, vibration has gone and so did the engine light. Does this problem sound familiar to anybody? Can this be software glitch? Following this incident we decided to go back home, which was about 10 miles. The problem has never reoccurred. I'm now reluctant to drive the car again before this issue is understood. Any ideas?