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Voltage Supply of Engine Control Module (ECM), Checking|Page 7159 > < Voltage Supply of Engine Control Module (ECM), Checking|Page 7157

A8L Quattro Sedan V8-4.2L (BVJ) (2007)

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To increase the difficulty with which the ECM connectors can be accessed, the ECM is secured in a metal housing with retaining tabs and shear bolts.

Remove the ECM.

The threads of the shear bolts - 4 - (that are not installed in ECM) are coated with a locking compound. For this reason, the threads must be heated
with a heat gun to remove both bolts.

The threads of both shear bolts - 3 - (that are installed in 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).

Voltage Supply of Engine Control Module (ECM), Checking|Page 7159 > < Voltage Supply of Engine Control Module (ECM), Checking|Page 7157