How do you reset trim odometer on vauxhall insignia?

To reset the trim odometer on a Vauxhall Insignia, turn on the ignition without starting the engine. Press the trip reset button on the instrument cluster until the display shows the current trip mileage. Then, press and hold the trip reset button for a few seconds until the trip odometer resets to zero. Release the button, and the trim odometer should now be reset.