The tire pressure warning light on a 2021 Honda Accord can be reset by inflating all tires to the recommended cold pressures and allowing the system to recalibrate, or by using the vehicle’s TPMS Calibration feature in the driver information display. In most cases, a correct inflation followed by a highway drive will clear the light.
Understanding TPMS in the 2021 Accord
The Tire Pressure Monitoring System (TPMS) monitors each tire’s air pressure and alerts you if any tire is underinflated or overinflated. Factors like temperature changes, tire rotation, or tire service can trigger the light. The spare tire is typically not monitored by the system, and calibration may be required after servicing or tires are changed.
Automatic calibration after inflating tires
When all tires are inflated to the recommended cold pressures listed on the door jamb placard, the TPMS usually recalibrates automatically as you drive. A normal highway drive of about 10–15 minutes at 50–60 mph (80–97 km/h) is typically sufficient for the light to turn off.
Manual reset via the TPMS calibration option
If the light remains on after inflating to spec and taking a test drive, you can perform a manual calibration using the car’s on-board menus. The exact path can vary by trim, but the following steps reflect common methods used in the 2021 Accord family of models.
To perform manual calibration, follow these steps:
- Inflate all tires to the recommended cold pressures per the door jamb placard (including the spare if applicable—most Hondas do not monitor the spare).
- Turn the ignition to ON (engine off) and access the Driver Information Interface on the instrument cluster.
- Navigate to Vehicle Settings > TPMS Calibration (or TPMS) and select Calibrate (or Reset).
- Confirm the command if prompted; the TPMS indicator may blink or display a message that calibration is in progress.
- Drive for about 10 minutes at 50 mph (80 km/h) or faster to complete the calibration.
Once calibration completes, the light should go out. If it does not, proceed to the checks below or seek professional assistance.
What to do if the light remains on
If the warning persists after attempting calibration, perform these checks or seek service:
- Recheck all tire pressures with a reliable gauge to ensure they are at the recommended values when tires are cold.
- Inspect tires for punctures, slow leaks, or damaged valve stems; ensure each valve cap is present and tight.
- Confirm that tires were replaced or rotated correctly and that TPMS sensors are intact and functioning; some replacements require sensor programming.
- If no tire issues are found or you recently changed tires, have a tire shop or Honda dealer diagnose the TPMS sensors and calibration with a professional scan tool.
Persistent TPMS warnings can indicate a faulty sensor, a depleted sensor battery, or a leak that inflation alone cannot fix. A professional inspection is advised to prevent unsafe driving conditions.
Summary
To reset the 2021 Honda Accord tire pressure light, bring all tires to the recommended cold pressures and either rely on automatic calibration by driving or perform a manual calibration through the Vehicle Settings menu (TPMS Calibration). If the light stays on after calibration, check tires and sensors and seek dealer or tire-shop assistance for a detailed TPMS diagnostic.