Yeah that actuator gear might be bald on one side. Maybe SlickGT will chime in because he did this and did a DIY I think.

And ok, so that didn't work... I am assuming you went to a shop to get the codes pulled. It sucks, but you may need to go back to have them dig further with GT-1 or INPA as to what the values the SAS is reading. There is a procedure to check if the SAS is at fault, I'm just not sure what it is off the top of my head. TwinsPappa just did this repair last year, but I think he made a DIY with the correct default values.

Let me try to find the thread and post it.

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2011 E70 50i M Sport