S5 Quattro Coupe V8-4.2L (CAUA) (2009)
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Release the retaining clips - 2 - - arrows - and remove the Humidity Sensor (G355) - item 4 - from the interior rearview mirror base - 1 -.
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Disconnect the electrical connector - 3 -.
Installing
‹› Tightening specification, refer to => [ Headlight Assistant and Humidity Sensor Overview ] See: Headlight Assistant and Humidity Sensor
Overview.
Install in reverse order of removal, observing the following:
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Install the interior rearview mirror.