... explanation.Function Five:AD900 come with the Hitag 2 function.Support on programming the transponder key and remote for Audi A8, ... , EWS3+, EWS4, CAS, CAS2, CAS3. AD900 Key programmer GENERAL INFORMATION: The professional duplicating machine, Transpronics, has been designed and developed ... . As you know, new system cars lock the transponder during the programming. So you can not use these transponders ...