Once you have your four-digit PIN, use this standard procedure to unlock the Alpha unit: Volkswagen Radio Code Guide: How To Access & Unlock It
When power to the radio is cut, the unit loses its memory link with the car's Engine Control Unit (ECU). Once power returns, the screen displays . This is a security measure designed to make stolen radios useless to thieves. To bypass this, you must input the factory-assigned pin code. Step 1: Locate Your Radio Serial Number vw alpha radio code 2021
Look for a sticker on the top or side of the radio unit. Once you have your four-digit PIN, use this