A8 Quattro Sedan V8-4.2L (BVJ) (2008)
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Click on the Vehicle Self-Diagnosis button.
Display on (VAS 5051B):
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In selection - 1 -, press vehicle system "01 - Engine electronics".
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Wait until next display appears.
Display on (VAS 5051B):
1
Control module identification of engine control module (ECM)