Newer software displays the SN on the code entry screen. If the code has been entered already you can see the SN in engineering mode or read it out with VAg-COM/VCDS/VAS if the unit is connected to a car. Without power you cannot see the SN anywhere. Click here for more detail instruction

Starts with AUZ + 11 numbers or letters. If your serial number has 15 digits please enter the first 14 digits.
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