If I remember right.
Put the key in, turn it to accessories. Make sure your odometer is showing (not trip A, or trip B). Push in the reset (trip meter) button (while displaying the odometer) and hold. Turn the key off. While still holding the button turn the key to accessory and continue to hold. It should do a little bar count down on the LCD and then the "Maint Req." light should reset. Hopefully I remembered it correctly. Good luck.