Hi All. Having spent Sunday under the car changing the oil, filters, etc, tried to reset the service interval, to remove the little spanner sign. The advice is to press the reset button and hold. Turn on the ignition and then watch the display countdown from 10 to 0. Turn off the ignition and the job is supposed to be done. But it isn't!!! It's still set at 12500. What am I doing wrong please? John.