Make sure your display in the odometer mode and the key is out.
1. Hold down the reset button and don't let go while performing the steps below.
2. Switch your key to the 'On' position.
3. Your odometer should flash all zeros briefly.
4. There will now be six dashes. Each dash will disappear, like a count down.
5. When all the dashes disappear, you can let go of the reset button.
6. Turn key back to 'Accessory' or 'Lock'.
You can now try and turn the key back to 'On' and see if the maintenance will flash or stay lit.