S5 Quattro Coupe V8-4.2L (CAUA) (2009)
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Disconnect vacuum line - 3 - from the air guide pipe.
CAUTION!
Risk of violating emissions legislation.
‹› Do not open hose connection - 2 -!
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Lay aside air guide pipe with connected crankcase ventilation hose - 2 - by loosening hose clamp - 4 - and opening clips - arrows -.
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Disconnect vacuum line - 1 -.
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Remove air filter housing and disconnect the electrical connector - 2 - on the rear side at the Intake Air Switch-Over Valve (N335).
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Remove hose - 3 - from the secondary air system.
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Disconnect the coolant hose by lifting the retaining clamps - 2 - and loosening the hose clamp - 1 - on the coolant tube.
