How to Unlock an Audi Concert


1. Press 'FM2' and 'RDS' at the same time and hold them down until '1000' appears on the display. Do not press these buttons again until you are finished unlocking the Concert unit.
2. Press the '1' button the number of times equal to the value of the first digit in the radio code. For example, if the code is 9876, press the '1' button nine times. The number 9 will appear on the display. If you don't have the code, contact your Audi dealer or go to the Radio Code website (see Resources) to get it.
3. Repeat Step 2 with the '2,' '3' and '4' buttons until all four digits of the code appear on the display.
4. Press 'FM2' and 'RDS' at the same time and hold them down until 'SAFE' appears on the display. The Audi Concert should unlock after a few seconds.