Help, I need code to unlock my stereo

Hello everyone:

someone k could help you with the unlocking of my stereo Passat 97, and K I don't have the manual.

Thank you very much

Good, you need the radio serial number.
Depending on the brand, it comes out with the radio off the number 1, number 6 and turn on the radio, then a new 8 -digit comes out.
In case it is not so, you must dismantle the radio to see it on the side.
With the serial number you just have to call an official dealer to facilitate the radio code.

Hello on the automecanico.com page they give an infinite codes of stereos of different brands Checalo and you let me know