Service Inspection Reset

Hi, I have followed the instructions below on resetting my service inspection, but get to the point where the display shows serv _ _ _, but it just stays like that, and if I turn off ignition, this goes away and the service inspection warning flashes up again when I turn the ignition back on. Can anybody tell me if I am doing something wrong, or if I need to do something else after it gets to serv _ _ _?? : * Turn off the ignition * Press and hold the button on the left side of the display while turning the ignition on * Service OIL will be displayed * Pull out the button on the right side of the display until the service prompt is cleared * The display should now read --- If the above procedure does not work, outlined below is an alternative procedure: * With the ignition off, push the right button * Turn the ignition on and then pull the left button * This should clear the warning message