What does the maint required light on Toyota Prius mean?

The "Maint Required" light on a Toyota Prius indicates that it's time for routine maintenance, such as an oil change or other scheduled service. It typically comes on based on the vehicle's mileage or elapsed time since the last maintenance. This light is a reminder to ensure the vehicle remains in good condition, but it does not indicate a mechanical issue. To reset the light, maintenance must be performed, and the reset procedure followed as outlined in the owner's manual.