S5 Quattro Coupe V8-4.2L (CAUA) (2009)
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Remove the bolts - 1 - and - 2 - and the coolant hose - arrow -.
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Remove the right coolant pipe from the coolant connections and lay it aside.
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Remove the bolts - 1 - and - 2 - and loosen the hose clamp - arrow -.
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Disconnect the coolant connection pieces leading to the right side.
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Remove the secondary air hose - arrow - by pressing the release buttons.