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If an incorrect code is entered again, you radio will be locked for about one hour. You can repeat the above steps to unlock the radio once more, the number of attempts will be shown in the display. If an incorrect code is entered, the word "SAFE" appears, first flashing and then continuously.The radio should unlock and be usable shortly afterwards.Once the code shown on the display is correct, press the P.Scan and RBDS buttons simultaneously and hold until the word "SAFE" appears in the display, then release the buttons.Each press of the button increments the number by 1. Preset button 1 corresponds to the first digit, Preset button 2 corresponds to the second digit, etc. 4 to enter the four-digit code number from your radio card. Do NOT press these buttons again, otherwise the radio will consider "1000" to be the code. Press the P.Scan and RBDS buttons simultaneously and hold until "1000" shows on the display.You must retrieve the code that comes with the Audi's radio unit. SOURCE: i bought an Audi A3 secondhand with audi chorus
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