A6 Quattro Sedan V8-4.2L (BVJ) (2007)
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The engine control module - 1 - is secured in a metal housing - 5 - with retaining tabs - 2 - and shear bolts - 3 and 4 - to make it harder to access it.
‹› Some engine control modules are not equipped with a protective housing. A protective housing is not installed in vehicles with automatic
transmissions.
The threads of the shear bolts - 4 - (that are not screwed into the ECM) are coated with a locking compound. For this reason, the threads must be
heated with the heat gun to remove both bolts.
The threads of both shear bolts - 3 -, that are screwed into the ECM, are not coated with a locking compound. The threads in the ECM housing must
not be heated and do not require to be heated (unintentional heating of the ECM).
