S5 Quattro Coupe V8-4.2L (CAUA) (2009)
Engine Control Module: Service and Repair
Engine Control Module, Replacing
Engine Control Module, Replacing
Special tools, testers and auxiliary items required
‹› Heat gun.
‹› The Engine Control Module (ECM) (J623) - 1 - is bolted to a protective housing - 5 -. To make removing the shear bolts - 4 - for the retaining tabs
- 2 - more difficult, the threads are coated with locking compound.
‹› To disconnect the electrical connectors from the Engine Control Module (ECM) (J623) (e.g. to connect the test box or to replace the ECM), the
protective housing must be removed.
Removal
-
Remove the right engine compartment trim - 3 -.
-
Disengage gas-filled strut to remove engine compartment trim.
-
Remove the four nuts on the Engine Control Module (ECM) (J623) retaining clips and tilt the clips to the side.
-
Remove Engine Control Module (ECM) (J623) - 3 -.