The Roadi RDT45 RDT45 Digital Auto Scanner diagnostic is the scan tool for most Volkswagen and Audi that has been sold worldwide since 1990. Easily and quickly determine the cause of why the check Eugine light is on and able to erase codes and turn it off. Reads and erases trouble codes. Supports VW CAN BUS protocol. Features and Benefits: * Erases Trouble Codes and determines (MIL) Malfunction Indicator Lamp Status * Reads trouble codes for 4 main systems Engine, Transmission, Airbag, ABS VW Audi * Supports VW CAN BUS protocol * English interface * Audi 1990 and newer