S4 V8-4.2L (BHF) (2004)
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Pry off both covers - 3 - using a screwdriver.
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Loosen hex nuts - 4 - by several turns.
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Loosen wiper arm - 2 - from wiper axle by lightly tilting.
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Remove hex nuts completely and remove wiper arms.
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Disconnect securing clips - 1 - and remove cowl grille - 5 -.
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Remove cover for electronics box in plenum chamber - arrows -.
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Pry off Engine Control Module (ECM) retaining bracket - arrows - using a screwdriver and set control module aside.
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If installed, unclip Transmission Control Module (TCM) retaining bracket and set control module aside.
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Remove Secondary Air Injection (AIR) Pump Relay -J299- - item 2 -.