Hello, I had this problem before with my Passat and after alot of investigations online or with help of some friends, i had the sure result, The radio code is not a universal code, means that it's different from a car to another one. If you have the code in the manual of your car, i can help you telling you the steps to enter the code to unlock your radio. but, in case of you do not have the code, Forget it, the only solution is to head direct to the authorized dealer of your car, they will find for you the code for your radio depend on your car data like model, year of manufacturing, how many cc and etc....
Sure, the authorized dealer of your car will charge you.
Good Luck
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