I do not have a stert/stop button on my 530i so I have the ole ignition key. i seem to be having a problem when I turn the ignition on nothing happens engine-wise. I turn the key and retry still nothing and about the third time the engine kicks in. I do have the clutch to the floor so that is not the problem. Anyone have similar problems? Anyone know if my cars ignition switch can be converted to a start/stop button ignition or if it even worth it?