Entering Safe Code On Volkswagen RCD 310 Radio

We have been asked a couple times how to enter a safe code in the RCD 310 VW Radios, so here it is! If you purchase a radio with no code. locate the Serial Number that starts with "VWZ" as shown in the begining. We purchase our codes from the following person; keys 1-4 are used for each digit to enter code into. Last button "OK" press once code is entered and done!