A4 Quattro Wagon L4-2.0L Turbo (BPG) (2005)
Take electronics box out of plenum chamber as follows:
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Remove bolts - arrows - and take off cover.
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Use screwdriver to carefully pry off retaining strap - arrow -.
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Lay aside engine control module with connectors attached.
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Disconnect connectors - 2 - at console.
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Disconnect electrical wiring connection - 1 -.
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Release catches - arrows - and lift auxiliary relay carrier out of electronics box.
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Pull engine wiring harness together with rubber grommet out through opening in electronics box.