I just googled it, these were instructions:
The ignition switch must be in the off position.
Press the info switch to get to the service
reminder display.
Press and hold the switch for 2 seconds or more
to display flashing wrench.
With this flashing, lightly press the info switch,
the screen should switch from"- -- "
to "clear" and then to the time until next
inspection.
worked fine for me when wanted to reset it.