S4 V8-4.2L (BHF) (2004)
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Remove rear seat bench.
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Unbolt cover for right locking flange - arrows -.
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Disconnect electrical harness connector - 1 - at right locking flange.
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Disengage electrical harness connector - 2 - and lay it aside.
CAUTION: The fuel system is under pressure. Before opening system, place rags around the connection area. Then release pressure by carefully
loosening the connection.
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Disconnect fuel line - 1 - from locking flange by pressing release button.
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Disconnect ventilation line - 2 - by pressing release buttons.
CAUTION: Locking flange may only be opened when fuel tank is maximum 1/4 full. Otherwise, a large amount of fuel will spill out.