Radio switched off, press and hold the AS button and switch radio on.
Release AS button.
Display should show four dashes (- - - -).
Enter your code using the station pre-set buttons.
For example, to enter code 7192
press button (1) until 7 shows on the display
press button (2) until 1 shows
press button (3) until 9 shows
press button (4) until 2 shows.
Once the code is entered press and hold the AS button until you hear a beep. Release the button, job done.
If you have the cd changer it's the same instructions but use the circle source button instead of the AS button.
vaux, October 2009