Compose the code number as follows (example):

WARNING: This page is about a different car, the 2003 Audi S6 and 2002 Audi S6. However, it is still accessible from the selected car via links, so may be relevant.

USA, TLEV (emission standard) 06

4WD with traction control system 7

Automatic transmission 5

Audi A6 and S6 2

Code number (example) 06 7 5 2

The display on V.A.G 1551 Scan Tool shows the control module identification code e.g.:

Fig 1: VAG 1551 Scan Tool Display - Engine Control Module (ECM), Coding (3 Of 4)

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Press -->key.

Indicated on display

Fig 2: VAG 1551 Scan Tool Display - Engine Control Module (ECM), Coding (4 Of 4)

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Press keys 0 and 6 for "End output" function and press Q key to confirm entry.
Switch ignition off and then on again.

NOTE: The next time the ignition is switched on the newly entered code will be activated.