How do you unlock radio in 1996 Cabrio VW to enter code?

To unlock the radio in a 1996 VW Cabrio, first, turn on the ignition without starting the engine. Then, press and hold the "AM/FM" button and the "Seek" button simultaneously until the display shows "1000." This will prompt the radio to ask for the code. Enter the code using the preset buttons, and if done correctly, the radio will unlock and function normally.