S5 Quattro Coupe V8-4.2L (CAUA) (2009)
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Disengage the retaining tab - 1 - at the front cover - 3 -.
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Remove the upper cover.
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Disengage the retaining hooks in the - direction of the arrow - and remove the front cover - 2 - downward from the guide bars - 1 - on the interior
rearview mirror base.
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Remove the bolt - 1 - and disengage the housing - 2 - for the Automatic High Beam Control Module (J844) with Light Recognition Sensor (G399)
by pulling the retaining tab - arrow - out of the interior rearview mirror base - 3 -.