S4 Quattro Wagon V8-4.2L (BHF) (2008)
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Remove bolts -1- and -2-.
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Loosen hose clamps - arrows - and remove right coolant pipe from coolant hoses.
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Disconnect electrical harness connector -2- on Engine Coolant Temperature (ECT) Gauge Sensor G2 / G62.
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Remove nut -1- and remove electrical wiring harness at rear of coolant pipe.
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Remove bolts - 2 to 5 -.
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Remove rear coolant pipe.
Note:
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Ignore -1- and -6-.
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Remove mounting bolts - 1 to 4 - of combination valves for Secondary Air Injection (AIR) system.