#Older audi radio code help code

#Older audi radio code help code

If you buy the radio at a wrecker and request the unlock code from a dealer, since the original car has not been reported stolen, you should be given the unlock code (especially if the car is 15+ yrs old). That chassis may be (probably is) registered against a car VIN so the 'authorities' know if it comes from a reported stolen car. The hash generates maybe 10 unlock codes for that particular radio, based on a predefined mathematical formula the number is fed into, and the dealer usually gives you one of them.

I think the code is derived from a hash derived from the number on the radio chassis. Learned about that when I bought the radio from the company that refurbished it (they disassembled it, cleaned the components, replaced dodgy parts & tested it). That radio would not have worked in a TT due to different electronic specs within the car itself - in other words, compatibility. There was another one that was spec'd for an A4 & A6 - same model & revision #. The radio pictured has a tag on it that it is spec'd for use in an USA/North America A4, A6 & TT. Has to do with the speaker specs and amp (I think).

For example, you can get a Concert radio, same dimensions, but different specs - so some will work in the TT and some will not. That's a lot of 'paperwork' in their records.ДЇor one, a radio is manufactured for a certain brand/model to certain specs & tolerances. Could be registered with Audi in their internal records against another VIN.