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Discussion Starter · #1 ·
OK, had the front, passenger wheel off to check my new (to me) 2008 528i. There is a small arm (1/4" X 8" maybe) attached to what I think is the thrust arm. It is flimsy and has lots of play. It is very light duty. It goes under a plastic cover. PUlled off one bolt to look behind the plastic and it is attached to some sort of half moon shaped plastic piece. The half attached to the thrust arm is a very light duty ball joint.

I think is works the way it is designed but it does have play and it does rattle a bit. It is very light, so I doubt there is any noise noticeable from the cockpit.

Does anybody know what this thing controls? Is it supposed to be like I described?

I appreciate any feedback.
 

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Discussion Starter · #2 ·
got it on another board--headlight vertical aim control sensor.

On a control arm? I guess i get it.
 
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