The TPMS light signals tire pressure or sensor issues and should not be treated as a simple on/off toggle. The proper approach is to correct tire pressures and perform a reset if your car supports one. Here’s how to handle it in a safe, responsible way.
Understanding the TPMS on a 2009 Accord
The tire pressure monitoring system (TPMS) monitors each tire’s pressure and alerts you when a tire is underinflated or when a sensor has an issue. A persistent light can be caused by underinflated tires, a failing sensor, or a sensor battery nearing the end of life. Before attempting any reset, verify that all four tires (and the recommended spare, if the vehicle uses a monitored spare in some markets) are inflated to the pressure specified on the door jamb sticker or in the owner’s manual.
Resetting the TPMS after inflating tires
If the TPMS light appears after you’ve inflated the tires to the correct pressures, you may need to reset the system. The exact method depends on whether your 2009 Accord has a TPMS reset button. If your model does not have a reset switch, the system will typically relearn automatically after a road drive.
Follow these steps to reset the system. (The steps below reflect common configurations for a 2009 Honda Accord; if you cannot locate the reset switch, consult the owner’s manual for the precise procedure.)
- Park on a level surface and engage the parking brake. Ensure the ignition is in the ON position with the engine OFF, unless your manual specifies otherwise.
- Inflate all four tires to the recommended cold pressures printed on the door jamb sticker or in the owner’s manual.
- If your model has a TPMS reset switch, locate it (often under the left side of the dash near the footwell or in the glove box). Press and hold the switch until the TPMS indicator light blinks slowly or goes out, then release.
- Start the engine and drive smoothly at highway speeds (around 50 mph / 80 km/h or higher) for about 10 minutes to complete the relearn process. The light should go off if the sensors are successfully learned.
- If the light remains on after these steps, or if you have recently replaced tires or sensors, you may need professional service to perform a formal TPMS relearn or diagnose sensor health.
Note: Do not drive long distances with underinflated tires. Proper tire pressure is essential for safety, handling, and fuel economy, and the TPMS exists to help prevent underinflation from going unnoticed.
When to seek professional help
Persistent warning after reset
If the TPMS warning stays illuminated after attempting a reset, one or more sensors may be faulty, or there could be a leak in a tire. Schedule service with a tire shop or Honda dealer to diagnose sensor health and perform a professional relearn if needed.
Sensor or tire issues during service
During tire rotations or replacements, ensure the TPMS sensor IDs are recognized by the vehicle’s system. Some jobs require sensor reprogramming or relearning with specialized equipment to restore accurate monitoring.
Summary: The TPMS light on a 2009 Honda Accord should be addressed rather than simply disabled. Start by correcting tire pressures, then perform the appropriate reset if your model supports it. If the light persists, seek professional diagnostic help to rule out faulty sensors or leaks. Keeping tires properly inflated enhances safety and efficiency.