How do you reset the TPMS on a Acura TSX?
The quickest way to reset the Tire Pressure Monitoring System (TPMS) on an Acura TSX is to ensure all tires are inflated to the recommended pressures and then relearn the sensors either by driving at highway speeds or by using the TPMS reset button, depending on the model year. This guide covers the common approaches and what to expect.
Understanding TPMS on the TSX
TPMS monitors each wheel’s air pressure and alerts you if it drops below the manufacturer’s threshold. The TSX uses direct TPMS sensors in each wheel, and a relearn is often required after inflating tires, rotating wheels, or installing new sensors. Model-year variations mean procedures can differ slightly, so consult your owner’s manual if you’re unsure.
What you need before resetting
Before attempting a reset, confirm all four tires are inflated to the recommended cold pressures listed on the driver’s door jamb sticker. Do not forget that the spare tire typically does not have a TPMS sensor, so focus on the four active wheels. If you recently rotated tires or changed sensors, take note, as these changes can affect the relearn process.
Preparation steps you should follow before attempting a TPMS reset:
- Check and set all four tire pressures to the door jamb’s recommended values, and recheck after a few minutes to ensure they’re stable.
- Inspect tires for slow leaks, cuts, or damage that could cause inaccurate readings.
- Ensure wheels with sensor replacements or repairs have valid, functioning sensors and proper installation.
Once you’ve completed these checks, you’re ready to perform a TPMS relearn using one of the common methods described below.
Reset methods by year common to the TSX
Method A: Drive relearn (most model years)
This is the standard relearn method for many Acura TSX models. After inflating the tires, you typically relearn the sensors by driving at steady highway speeds for a set period.
- With the ignition on and the engine running or at least in the ON position, maintain steady speeds and drive on a clear road.
- Accelerate to about 50–60 mph (80–97 km/h) and maintain that speed for roughly 10 minutes to allow the system to relearn each sensor.
- Watch the TPMS indicator: if the light blinks and then goes off, the relearn is complete. If it stays on, proceed to the manual reset method or recheck tire pressures.
Note: The highway-speed relearn is the most common method and often succeeds after tires have been properly inflated. If the light remains after a full highway relearn, a sensor issue or leak may be present and should be checked by a professional.
Method B: Manual TPMS reset button (some years)
Some TSX years provide a dedicated TPMS reset button. Location can vary (often under the dash to the left of the steering column or inside the glove box area). If your model has this feature, use the button to trigger a relearn.
- Ensure all four tires are inflated to the recommended pressures (store the spare for this procedure as it typically doesn’t have a sensor).
- With the ignition in the ON position and the engine off, locate the TPMS reset button.
- Press and hold the TPMS button until the TPMS indicator light on the instrument cluster blinks three times, then release.
- Drive at a steady speed (usually 30–60 mph) for about 10 minutes to complete the relearn and verify the light goes out.
If your TSX doesn’t have a visible TPMS reset button, or the button procedure doesn’t apply to your year, rely on the drive relearn method described above or consult the owner’s manual for the exact procedure for your trim.
What to do if the TPMS light stays on
If the TPMS warning remains illuminated after following the relearn procedures, perform these diagnostic steps before seeking service:
- Recheck all four tire pressures again to ensure accuracy.
- Look for slow leaks, damaged tires, or valve stem issues.
- Verify sensors were not damaged during tire installation or replacement and that wheel torque is correct.
- If the light persists, schedule a diagnostic with a tire shop or Acura dealer to check sensor functionality and battery health, as individual sensors can fail or become unpaired.
A stubborn TPMS light may indicate a failed sensor in one wheel or a deeper system issue that requires professional service.
Summary
Resetting the TPMS on an Acura TSX generally involves ensuring proper tire pressures and performing a relearn, either by driving at highway speed or via a manual reset button if your year supports it. Start with inflating all four tires to the door jamb specifications, then use the relearn method appropriate for your model year. If the warning persists, have the system diagnosed by a qualified technician to identify sensor or sealing issues.
