The "Maintenance Required" light on your 2022 Toyota Highlander is a service reminder, not a warning of a detected problem. This indicator simply counts mileage to remind you when scheduled maintenance is due—it doesn't indicate anything is wrong with your vehicle.
Understanding the Light
Toyota's Maintenance Required indicator is a simple mileage-based reminder that illuminates at preset intervals (typically every 5,000 miles). It's triggered by distance traveled, not by any sensor detecting a problem. The light means it's time for service, not that something has failed.
Difference from Check Engine Light
The Maintenance Required light is completely different from the Check Engine light. The Check Engine light indicates the computer has detected an actual fault—it requires diagnosis. The Maintenance Required light is just a reminder with no diagnostic codes associated.
When It Appears
The light typically follows a sequence: it flashes briefly at startup around 4,500 miles since last reset (warning that service is approaching), then stays on constantly at 5,000 miles (service is due). The intervals can be adjusted at Toyota dealerships based on your driving conditions.
Required Maintenance
When the light appears, standard maintenance is due—typically an oil change and inspection. The owner's manual outlines what's included in each service interval. Some services are more comprehensive at longer intervals (15,000, 30,000 miles, etc.).
Resetting the Light
After performing maintenance, the light must be manually reset—it doesn't turn off automatically. The reset procedure involves turning the ignition on (don't start), pressing and holding the trip meter button, then turning off and on while continuing to hold the button until the light flashes and turns off.
If Light Appears After Reset
If the Maintenance Required light returns immediately after a correct reset, the reset procedure wasn't completed properly. Retry the procedure following each step exactly. If it still won't reset, there may be an issue with the reset switch that a dealer can address.