What does check TPMS system mean on Acura TSX?
The Check TPMS System warning on an Acura TSX indicates a problem with the Tire Pressure Monitoring System (TPMS) or with tire pressure readings. It can be caused by low tire pressure, a faulty sensor, or a broader system fault.
How TPMS works on the TSX
The TSX uses a direct TPMS with sensors embedded in each wheel to monitor tire pressure and alert you if any tire drops below the recommended range. The goal is to prevent underinflation, which can affect handling, fuel economy, and tire wear. The recommended cold tire pressure for your vehicle is listed on the driver’s door jamb placard and in the owner's manual; use those values when checking pressures.
Common causes of the "Check TPMS System" warning
The warning can appear for several reasons. The following list covers typical triggers, from simple to more complex faults.
- Low tire pressure in one or more tires (including the spare, if equipped with a TPMS that covers it).
- A slow puncture or gradual air loss from a tire.
- A dead or weak battery in a wheel sensor, or a damaged sensor.
- Sensors or their wiring degraded by corrosion, impact, or improper mounting.
- A recent tire change, rotation, or replacement that requires re-learning or recalibration of the TPMS.
- Extreme or rapid temperature changes that affect tire pressures.
When the warning appears, start by verifying that all tires are inflated to the recommended cold pressures. If pressures are correct and the light stays on, there may be a sensor or system fault requiring professional inspection.
Diagnosing and addressing the TPMS warning
To address the warning, follow these practical steps. The list is designed to guide you from quick checks to when to seek service.
- Check cold tire pressures on all four tires (and the spare if applicable) using a reliable gauge. Inflate to the recommended cold values from the door placard or owner’s manual.
- Inspect tires for damage, punctures, or slow leaks; look for nails, cuts, or uneven wear that could indicate a leak.
- Inspect wheel sensors and rims for visible damage or corrosion. If a sensor looks compromised, avoid driving long distances until it’s addressed.
- After inflation and any repairs, attempt the TPMS relearn. The exact method varies by year; consult the owner's manual for year-specific instructions, or have a mechanic perform it.
- If the warning remains after ensuring proper pressures and relearning, have a technician diagnose the sensors, wiring, and TPMS module. Sensor replacements are common as they age, typically after several years of service.
Note: Relearning methods differ by model year. In many TSX models, inflating tires to spec and driving at a steady highway speed for about 10–20 minutes can allow the system to relearn; some years require a TPMS reset procedure via a button or the vehicle’s display. Always verify with the owner’s manual or a certified Acura technician.
Resetting or relearning TPMS on the Acura TSX
Resetting or relearning the TPMS is often necessary after tire service, rotation, or sensor replacement. The exact method varies by year and trim, so use these general guidelines as a starting point and verify with your manual.
Common approaches you may encounter
Most TSX models require one of the following to initiate a relearn: either using a TPMS reset button (often located under the dash or near the steering column) or driving the vehicle at a steady speed (usually around 50 mph) for about 10 minutes after inflating tires to the recommended pressures.
- With a TPMS reset button: turn the ignition to ON (engine off) and press and hold the button until the TPMS indicator blinks or a confirmation is shown; then drive to complete the relearn.
- Without a reset button: inflate tires to spec and drive at a steady highway speed for several minutes to allow the system to relearn automatically.
- If the light stays on after attempting relearn, a sensor or module fault may exist and should be checked by a dealer or tire shop.
Because the exact procedure can vary by model year, consult the owner’s manual or a certified Acura service technician for the precise TPMS relearn steps for your TSX.
Summary
The "Check TPMS System" warning on an Acura TSX signals a Tire Pressure Monitoring System issue or an abnormal tire pressure reading. Start by checking all tires for proper cold inflation, inspect for leaks or damaged sensors, and perform the relearn procedure if applicable. If the warning persists, have a professional diagnose the TPMS sensors, wiring, and control module to ensure safe driving and optimal tire performance.
