How to reset the onboard computer in a Vauxhall Vivaro?

I recently purchased a used Vauxhall Vivaro and noticed that the onboard computer has some incorrect settings. How can I reset the computer and start fresh?

To reset the onboard computer in your Vauxhall Vivaro, first start by turning on the ignition without starting the engine. Then, hold down the trip meter reset button and switch off the ignition. Keep holding the button until the display shows 'service' or 'service interval'. Press the button again, and the display will show 'confirm reset'. Release the button and press again to confirm. Your onboard computer will now be reset and ready for new settings.

Another option is to disconnect the battery for a few minutes and then reconnect it. This will also reset the onboard computer and clear any incorrect settings.

If the above methods do not work, you may need to visit a Vauxhall dealership or a qualified mechanic to have them reset the computer using their specialized equipment.