How do you reset the service light on a 2008 Vauxhall Astra?

To reset the service light on a 2008 Vauxhall Astra, first turn the ignition key to the "On" position without starting the engine. Press and hold the trip button on the instrument cluster, then turn the ignition off and back to "On" while still holding the trip button. Keep holding the button until the service light resets and disappears. Release the button, and the service light should now be reset.