Finding a complete "list" of VW radio codes isn't possible because every code is uniquely tied to your specific radio unit's serial number for security.
Locate the printed barcode sticker. Look for the 14-digit string starting with . vw radio codes list
"But what is the code?" Elias thought. The post continued: “If the previous owner didn't change it, check the card in the spare tire well. If not, try the factory default for your model year. For a 2003 Golf, try '0000' or '1234'.” Finding a complete "list" of VW radio codes