S4 V8-4.2L (BHF) (2004)
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Remove cover -1- on left of engine compartment.
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Pinch off coolant hose -1- with hose clamp 3094 and disconnect at coolant expansion tank.
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Remove bolts (arrows) and coolant expansion tank -2-.
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Disconnect wire to Engine Coolant Level (ECL) warning switch -F66- at bottom of expansion tank and lay aside coolant expansion tank with
coolant hose -3- connected.
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If necessary, use suitable plug to seal connection.
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Take connectors -1 4- out of holder on left of bulkhead.
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Disconnect connectors -1- and -4-.
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Remove holder at bulkhead.
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Remove heat insulation sleeve at wiring harness and wiring harness clear.
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Move oxygen sensor wiring downward and clear.
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Remove front left wheel.
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On vehicles with auxiliary heater, remove bolts (arrows) for exhaust pipe of auxiliary/additional heater at sound insulation.
