M. H. Greaves said:make sure the car is switched off, including the ignition, next to the temp gauge there is a small black button; hold it in, switch on ignition. The display starts a 10 second countdown, keep button held down for the ten seconds, The display shows 0, and the service symbol disappears. that's it!! If by chance you happen to take your finger off the button before ten seconds are up, it will give a shorter service interval, such as 6000 or 9000, to reset it go through the whole thing again.
regards. mark.