What are these sounds cause by?
Does any body got any ideas what these sound are caused by?
When I pull the codes on my e320, some times but not always I get this high pitch wine, then several tapping sounds, (like a ratchet wheel being indexed), then a sound like something was pushed or pulled into position. The high wine continues. I can't locate it but it's sounds like its coming from the driver's side of the engine under or near the Oil Filter. Nothing electrical is turned on; the ignition switch is in the on position.