CTUAU03 Infodapter Interface for Audi Vehicles (Non-MMI Systems)CTUAU03 Infodapter Interface for Audi Vehicles (Non MMI Systems) The CTUAU03 Infodapter interface allows installation of an aftermarket head unit in select non MMI Audi vehicles while retaining key factory features and vehicle functionality. Designed to integrate seamlessly with the vehicles electronics, this interface preserves steering wheel controls, phone button operation, and parking sensor audio, while also enabling additional features through