S4 V8-4.2L (BHF) (2004)
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Use screwdriver to pry off the two caps -3-.
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Remove nuts -4- and detach the two wiper arms -2-.
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Pull off clips -1- and remove cowl panel grille -5-.
Remove electronics box in plenum chamber as follows:
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Screw out bolts -arrows- and pull off sealing cover.
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Carefully pry off retainer bar with screwdriver -arrow-.
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Release connector latches -arrows- and pull off connectors -1- and -2- on engine control module.