In order to receive your unlock code you need to first fetch your stereo’s serial number.If your stereo is standard, please press PTY + Eject buttons at the same time then use the last 5 digits of the number appearing on the display in order to generate an unlock code.If your head unit is a sat nav then please remove your ash tray, slide your phone in and take a picture of the serial number etched to the bottom plate of your stereo. You will need the last 5 digits.