If your Volkswagen radio displays "SAFE" or "1000" after a battery change, you don't necessarily need to pay dealership prices to unlock it. A is a software tool or mobile app designed to generate the unique four-digit PIN required to reactivate your car's infotainment system. How to Get Your VW Radio Code for Free
: Some applications include a library of known serial-number/code pairs for older Blaupunkt and Grundig units. Google Play How to Use a Calculator Volkswagen Radio Code Calculator Free Download