hi Mike77k post the numbers/letters from below the main barcode something like 7700xxxxxxtt123 or 8200xxxxtt123 or the security code like Q123 or T0U123 can be found in a small box then i can help you off of the radio
Mike77k your code 7921 you must hold at end to store code. IF YOU DONT HAVE KEY THEN PUSH THUMBWHEEL IN AND SOME HAVE {A} KEY
Turn on the radio and the display will show 'CODE' Use the steering controls for code entry. Press the [ ] button then rotate the thumb wheel for the correct first digit Press the [ ] button then rotate the thumb wheel for the correct second digit Press the [ ] button then rotate the thumb wheel for the correct third digit Press the [ ] button then rotate the thumb wheel for the correct fourth digit If the correct code is now shown on screen, press and hold the [ ] button for up to 10 seconds to store the code