Original owners or dealers often wrote the 4-digit security code on the very first or last pages of these booklets. 2. Contact an Official Audi Dealership
You may need Audi radio removal tools (often called "keys") to slide the head unit out of the dashboard to view the label. Is a "Free Repack" Safe? audi auz1z3 code calculator repack free
I've personally helped users who bricked their radio permanently by entering wrong codes too many times (usually 3 attempts locks the unit for 1 hour; 10 attempts can permanently disable it). Original owners or dealers often wrote the 4-digit