How do I clear the maintenance reminder?

@BoboSha: 1. Turn off the ignition switch. 2. While pressing the clock adjustment button "SET," turn on the ignition switch. 3. Release the "SET" button, then press the "SET" button again. 4. Turn off the ignition switch, turn it back on, and check if it's reset to zero. If not, you must start over.

After maintenance, just ask the mechanic to reset it for you.

I also want to cancel, not sure if it will have any impact.