my 2 cents
I just think is starter is going south.
As a factory tech. Over my 14 yr span or you guys out there.
Have we really replace many ring gears.
I bet his starter just took a you know what.
My starter in my 500E went out last week. Ring gear was fine. I had the same problem symptoms as his car. Buts its not a bad idea to inpsect when the starter is out.
This is such a helpful site .All you guys are a big inspirtaion for those who hardly do what we do, day in and day out, keep up the good work guys.
Factory Tech 14 yrs