hmm could be that the arm ball joint popped out of the socket. Remove the cabin filter on the passengers side under the hood, it is held in by a clip at the front and the air outlet shroud is held on by plastic clips. you will be able to see if the ball joint is out of the socket. Pop it back in. If the ball joint is loose in the socket just pinch the socket slightly with a pair of pliers but not too much. Fill the socket with grease.
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