Depending on the radio, this normally works. Turn it on when it prompts for the code press preset station button number 1 (3, 4 or up to 8 times depending on your code). To move to the next number press preset station button 2 and repeat as above, repeat the steps with button 3 and 4. Once you have finished entering the 4 digit code press and hold preset station button 5 or 6 for a few seconds. Good luck
Paul, February 2009