Quote Originally Posted by Mjolinor View Post
Googling gives me this which I apparently wrote a year ago so probably correct:

Sit in car, neutral selected, ignition off, brake on and turn on the key to on (do not start the engine). Do not take your foot from the brake. After a minimum of 30 seconds you will hear the gearbox re-teach itself and see the gear display sort itself out.
Ta. I shall try it later to today after work