Do you have a T6 or 6.1? Some of the audi functions are impossible to get working apparently as they link to the Audi canbus and media system. Mine are out of an s8 and the electric adjustments all work including lumbar adjustment and headrest (all from seat buttons), but cooling and massage and memory wont work. I was hoping there might be a solution for memory but the buttons are on a panel in the door in the Audi so it might be complicated! If you have a T6.1 you’ll also need to get the heated seats coded.