Understanding and managing your 2017 Toyota Yaris iA’s Tire Pressure Monitoring System (TPMS) is crucial for vehicle safety and maintenance. Since 2008, following the TREAD Act, TPMS has been a standard feature in vehicles sold in the US. This article provides a detailed guide on the TPMS system in your 2017 Toyota Yaris iA, focusing on how to perform a TPMS reset using the OBD2 port when necessary.
The 2017 Toyota Yaris iA is equipped with an indirect TPMS system. Unlike direct TPMS, which uses sensors inside the wheels to measure tire pressure directly, indirect TPMS relies on the vehicle’s Anti-lock Braking System (ABS) to monitor tire pressure. It detects pressure changes by analyzing the rotational speed of each wheel. If a tire’s pressure drops, it will rotate at a different speed, triggering the TPMS warning light on your dashboard.
When is a TPMS Relearn Necessary for Your 2017 Toyota Yaris iA?
A TPMS relearn is recommended in several situations for your 2017 Toyota Yaris iA. Whenever you perform tire maintenance, such as a tire rotation, tire replacement, or even adjusting tire pressures, the TPMS system might need to be reset to accurately reflect the new tire conditions. While the 2017 Yaris iA uses an indirect system and doesn’t have physical sensors in the wheels, the system still needs to be calibrated after these services to ensure accurate monitoring based on the ABS data.
OBD2 Relearn Procedure for 2017 Toyota Yaris iA (Indirect TPMS)
Despite being an indirect system, the term “OBD relearn” is sometimes used in the context of TPMS reset procedures because diagnostic tools communicating through the OBD2 port can be used for advanced TPMS functions in some vehicles. However, for the 2017 Toyota Yaris iA with its indirect TPMS, a traditional OBD relearn procedure using a TPMS tool and OBDII module is not required for a standard TPMS reset after tire service. Instead, the 2017 Toyota Yaris iA utilizes a simpler indirect relearn procedure.
Here’s how to perform the indirect TPMS relearn on your 2017 Toyota Yaris iA:
- Ensure Correct Tire Pressures: Inflate all tires to the recommended pressure indicated on your vehicle’s tire placard (usually found on the driver’s side doorjamb).
- Apply Parking Brake: Make sure the parking brake is fully engaged.
- Turn Ignition ON: Turn the ignition key to the “ON” position, but do not start the engine.
- Locate and Push the SET Switch: Find the “SET” or “TPMS RESET” button. In the 2017 Toyota Yaris iA, this button is typically located below the steering wheel on the dashboard.
- Hold the SET Button: Press and hold the “SET” button for at least 3 seconds. You might see the TPMS warning light blink, indicating the reset process has begun.
- Drive the Vehicle: Release the button and drive your 2017 Toyota Yaris iA at a speed of 19 mph (30 km/h) or more for at least 30 minutes. The system calibration may take up to 60 minutes in some cases.
- Calibration Complete Alert: An audible sound or the TPMS light turning off will indicate that the TPMS calibration process is complete.
This procedure recalibrates the baseline for your 2017 Toyota Yaris iA’s indirect TPMS based on the current tire pressures and wheel rotation speeds.
Troubleshooting TPMS Issues on Your 2017 Toyota Yaris iA
If the TPMS warning light remains on after performing the reset procedure, or if it illuminates intermittently, there might be other issues. Here are some troubleshooting tips:
- Verify Tire Pressures: Double-check that all tires are inflated to the correct pressures. Even slight deviations can trigger the TPMS light.
- Check for Tire Damage: Inspect your tires for any punctures, leaks, or damage that could be causing pressure loss.
- System Malfunction: While less common with indirect systems, a malfunction in the ABS system or the TPMS control module could also cause issues. In such cases, professional диагностика using an OBD2 scanner might be necessary to read Diagnostic Trouble Codes (DTCs).
TPMS DTC Codes and OBD2 Diagnostics
For in-depth troubleshooting, using an OBD2 scan tool is beneficial. While your 2017 Toyota Yaris iA doesn’t require an OBD2 tool for a standard TPMS reset, a scan tool can retrieve TPMS Diagnostic Trouble Codes (DTCs). These codes can pinpoint specific problems within the TPMS system, whether it’s related to tire pressure imbalances, ABS sensor issues, or other system faults. Consulting a repair manual or a professional technician is recommended for interpreting DTC codes and performing advanced diagnostics.
Conclusion
Maintaining proper tire pressure and understanding the TPMS in your 2017 Toyota Yaris iA is vital for safety and optimal vehicle performance. While it utilizes an indirect TPMS system and a straightforward reset procedure, knowing how to perform this reset and troubleshoot common issues will empower you to keep your vehicle in top condition. Remember, for complex TPMS problems or persistent warning lights, seeking assistance from a qualified automotive technician is always a wise decision.
