How do I reset my Audi A2's onboard computer?

I recently had my Audi A2 serviced and since then, the settings on my onboard computer have been reset. How can I restore the previous settings or reset the onboard computer to its factory settings?

You can reset your Audi A2's onboard computer by pressing and holding the reset button located on the instrument panel. This will reset the computer back to its original factory settings.

If the reset button doesn't work, you can try disconnecting the battery for a few minutes and then reconnecting it. This should also reset the onboard computer.