Is there some method for resetting the light other than an OBD-Il device?

The Odometer reset is what u use to reset the Maint reset light. just before u turn the key to accessory(one click over from off) press down the odo reset. (also known the trip reset) You will either get five dashes{-----} Or the maint light will blink 3 times & go out. If u get the dashes, they will go down(starts with five then four then three.etc) then the light will go out. l work at a Toyota dealership in the service dept & l deal with that light everyday. You normally get that light when it is time for an oil change.

If u do not feel comfortable trying to change the light, just head to the dealership!

When u vehicle reaches five hundred miles from the scheduled maintenance it will blink for a little while then go away. Once u have reached or gone over the scheduled
maintenance it will remain steady on. To reset

Make sure only the odometer display is on - ie. it is not
in trip a or b mode. Once done, press & hold the reset
button next on the left next to the steering wheel, then cycle
the key to accessories on. The dashes will disappear one by one on the odometer display until gone. Once gone the resetting procedure is complete.