can someone tell how i can access to the green menu as i don't have a setup button my car is 2013 audi a5 but i tried to press return and car button and it entered engineering menu that doesn't do much can some one help please thanks in advance
Perhaps you would have found your answer by doing an AudiWorld search.
In any case, you will need one of the OBDII-VAG tools to activate the "green" menu, i.e. VCDS, Carista or OBDEleven. Use caution and do some research before making any changes.