A8L V8-4.2L (BFM) (2004)
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Then grab bolt head - 2 - with locking pliers - 1 - and turn shear bolt in direction of - arrow -.
Then, the engine control module (ECM) can be separated from the protective housing.
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Disengage connectors from Engine Control Module (ECM) and then disconnect the connectors.
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Remove old Engine Control Module (ECM) and insert new ECM.
Installing
Installation is performed in reverse order.
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Engine Control Module (ECM) (J623) must be installed again with protective housing.
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New shear bolts must always be used.
After installing new Engine Control Module (ECM), the following work steps must be performed:
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If Engine Control Module (ECM) (J623) is replaced, select "Replacing J623, additional steps" function in "Guided Fault Finding".