I have C200K auto. There is a clicking noise coming from the centre console where the gear shift is. It is like something is fouling something in the gearbox as it is tune with the speed of the car and not the engine speed. The noise disappears when I turn left. It only does it when the car is moving in gear, neutral and with the engine turned off. I can feel the clicking noise on the gearshift, Has anyone heard of this before?