AUDI A4: control modules scans

8E2, 8EC, 8K2, 8K5

Audi A4 is a model in the Audi lineup with distinct market positioning and multiple development stages across years. For A4, accurate service work depends on matching procedures to the exact year and market version, because module compatibility, coding options, and diagnostic behavior can vary significantly. For A4, robust diagnostics require matching software, coding paths, and module compatibility to the exact year and market specification.