Do not try to turn off the tire pressure warning. On a 2018 Honda Accord, the proper fix is to bring all tires up to the recommended cold pressure and, if needed, reset or relearn the TPMS through the vehicle’s settings or by driving at certain speeds. Disabling the system is not recommended and can hide a real safety issue.
What the TPMS light means
The Tire Pressure Monitoring System (TPMS) light signals that one or more tires are underinflated, have a slow leak, or there is a sensor fault. Cold-weather changes, tire rotations, and tire replacements can trigger the warning. If the light is steady, a tire is likely underinflated; if it’s blinking, there may be a fault requiring service.
Do not disable the TPMS
Because the TPMS is a critical safety feature, there is no legitimate, safe method to permanently disable it. If the warning stays on after you have addressed tire pressures, you should pursue a recalibration or diagnostic from a qualified technician rather than attempting to turn the light off.
Step-by-step: basic checks and inflation
Use these practical steps to verify tire pressures and determine whether the warning is due to underinflation or a sensor issue. This list focuses on the standard maintenance process you should perform before pursuing a reset or diagnostic.
- Find the recommended tire pressure for your Accord’s tires—usually listed on the driver’s door jamb placard and in the owner’s manual. It commonly sits around 32–35 psi, depending on trim and tire size.
- Check all four tires when they are cold. Use a reliable tire pressure gauge to measure each tire’s pressure.
- Inflate any tire that is below the recommended pressure to the specified cold PSI. Don’t forget the spare if it has a TPMS sensor.
- Recheck all four tires after inflating. Ensure even pressures across the set unless a specific tire requires a different value.
- Drive the vehicle at normal speeds to allow the TPMS to re-learn, typically after a few miles of driving. The light should turn off if all sensors are functioning and pressures are correct.
- If the light remains on after inflation and driving, proceed to TPMS reset/calibration steps or seek professional service.
Conclusion: Correcting tire pressures is the first and most important step. If the light persists, a recalibration or sensor check is often required.
Resetting the TPMS (calibration) via the vehicle’s settings
Many 2018 Honda Accord trims offer a TPMS calibration/relearn option in the instrument cluster or infotainment settings. The exact path may vary by trim level and software version, so consult your owner's manual for the precise sequence. Below is a general outline used on many Hondas.
- Ensure all tires are inflated to the recommended cold pressure.
- Turn the ignition to ON (engine off) and access the vehicle’s TPMS calibration screen via Settings or Vehicle on the infotainment display.
- Choose TPMS Calibration, Relearn, or Initialize and confirm the action.
- Drive at a steady speed (often 40–50 mph or higher) for about 10–20 minutes to complete the relearn process.
Note: If your trim does not show a TPMS calibration option, or if the light does not reset after the on-screen procedure, you may need a physical reset via a dealer tool or a professional diagnostic to rule out sensor faults.
Alternative: Driving-based relearn (no button required)
In some configurations, you can complete a relearn by driving at highway speeds for a prescribed duration after ensuring proper tire pressures. The exact speed and time can vary, so refer to the manual or contact a dealer if you don’t see a calibration option on your display.
When to seek professional help
If the TPMS light remains on after inflating all tires to the correct pressures and attempting any reset or relearn steps, there may be a faulty sensor, dead battery in a sensor, or a wheel-band wiring issue. A qualified technician can diagnose with TPMS-specific tools and replace sensors if needed. Driving long distances with a malfunctioning TPMS is not advised.
Summary
The tire pressure warning on a 2018 Honda Accord should be treated as a safety cue, not a feature to disable. Begin by confirming all tires are at the recommended cold pressures, then attempt a TPMS recalibration or relearn through the vehicle’s settings or by driving at highway speeds. If the light remains after these steps, consult a dealer or certified shop to inspect sensors and the system. Regular maintenance and prompt attention to the TPMS can prevent unsafe driving conditions and ensure accurate tire monitoring.