Ford 3000, 4000, 5000, 6000.

The official line is - straight from October update of FORD TIS.

1. Drivers door open - leave open.
2. Ign. ON. - Use RED key only.
3. Radio ON.
4. Press and hold presets 1, 3 and 6.
5. Ign. OFF then back ON within 1 second.
6. Release presets 1, 3 and 6.
7. Radio OFF.
8. Ign. OFF.

Repeat the above the same number of times that is showing on the display when you started. i.e: 10 or 13.

Please Note that this method will not work with American FIC sets.