Not every warning light can be reset with a single button press. On a 2018 Honda Accord, you can reset certain maintenance reminders (oil life) and, after correcting tire pressures, the TPMS indicator. Active fault lights (like Check Engine, ABS, or SRS) generally require diagnosis and repair rather than a simple reset.
Maintenance Minder: resetting the oil life
Resetting the oil life restores the Maintenance Minder to its new-cycle state. Do this only after an oil change or maintenance has actually been performed.
- Turn the ignition ON with the engine OFF (the RUN position if needed, depending on your model).
- Use the SELECT/RESET knob on the instrument panel to bring up the Maintenance Minder screen and highlight Oil Life.
- Press and hold the SELECT/RESET knob for about 10 seconds until the Oil Life percentage blinks, then release.
- Press and hold again for a moment until Oil Life resets to 100% and the display confirms the new maintenance cycle.
Resetting the oil life sends the Maintenance Minder into a fresh cycle, signaling when the next service is due. Always ensure the actual service has been performed before resetting.
TPMS: resetting tire-pressure warning
Resetting the Tire Pressure Monitoring System (TPMS) typically begins with correct tire pressure and, if needed, a recalibration. The exact steps can vary by trim and firmware.
- Check and inflate all four tires (including the spare if your model’s TPMS uses it) to the recommended pressures shown on the door-jamb sticker.
- Drive the car at speeds above about 50 mph (80 km/h) for around 10 minutes to allow the system to relearn the sensors.
- If your Accord supports a TPMS calibration option, go to the center display and navigate to Settings (or Vehicle) > TPMS Calibration > Calibrate Now, then follow the on-screen prompts and drive as directed.
If the TPMS light stays on after inflating to the correct pressures and attempting a relearn, the vehicle may need sensor servicing or a dealer diagnostic to address a faulty sensor or control module.
Other warning lights: general guidance
Some lights indicate real faults that must be addressed rather than cleared. If you see a Check Engine, ABS, or SRS (airbag) warning continuing after maintenance minder or TPMS resets, diagnose the underlying issue with an OBD-II scanner or at a dealership/mechanic. Reset attempts do not fix actual problems.
When to seek professional help
If a warning light persists after performing the standard resets, or if multiple lights come on simultaneously, schedule service. A technician can diagnose fault codes, inspect sensors, and verify that safety-critical systems are functioning properly.
Summary
For a 2018 Honda Accord, you can reset maintenance-related reminders (oil life) and, after correcting tire pressures, reset the TPMS. Most other warning lights require diagnosis and repair rather than a reset. Always complete the actual service before resetting, and consult a professional if any fault lights remain illuminated.