if you look into your HUD through the windshield, and see a spring that is not attached to anything in there, you know it is the spring! it hooks up to the mirror, and the spring pulls it down to a roller, that is controlled by your shifter. I just fixed mine two days ago.
This is the result of me getting angry, and finding a replacement piece for $42 online, and saying to hell with this piece! i just broke it right out of there! patience is a virtue, most of the time
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