turn radio on, display is 0 0 0 0
turn thumbwheel on stalk by volume control until first digit is correct.
press button on bottom of stalk near volume controls, this moves to second digit.
repeat for all four digits.
N.B. On last digit press button for at least 2 seconds.
It should then work.
If you make an error 'CODE' will display. DO NOT TURN RADIO OFF
YOU MAY HAVE TO WAIT FROM 1 TO 32 MINUTES FOR ANOTHER ATTEMPT.
Hope this helps.
Mike B, February 2007