Every new generation of VAG cars is more complicated than a previous. Amount of combinations of installed extras and their variants makes the coding of the control unit far more complicated than by older generations. The advanced diagnostic routines checking the configuration against installed options and if any inconsistency is detected, the fault is logged and important functions may be switched off.
In VAG-World the options are coded by so-called PR-Codes. This is a 3-characters code which describes the option installed. The PR-Codes are grouped into
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