Experiencing frustrating TPMS (Tire Pressure Monitoring System) warnings after rotating your tires, especially on a Subaru Wilderness? You’re not alone. Many owners encounter this issue, often after a five-tire rotation where the spare tire becomes part of the regular rotation. The good news is a Bluetooth (BT) scan tool can be a simple and effective solution to get rid of those annoying TPMS lights and ensure accurate tire pressure readings.
It’s a common misconception that the spare tire lacks a TPMS sensor. In many cases, like with the Subaru Wilderness OE spare, a sensor is indeed present but may need activation after being introduced into the rotation. Dealers might sometimes suggest otherwise, but user experiences and practical tests prove that these sensors are there and functional.
One proven method to resolve TPMS problems post-rotation is using a BT scan tool to “ping” and activate the sensor in your spare tire. Tools like the Autel TS508 have been successfully used by Subaru owners to address this very issue. By communicating with the sensor, these tools can prompt it to broadcast its data, allowing your vehicle’s TPMS system to recognize and monitor it.
Here’s a straightforward process using a BT scan tool, exemplified by the Autel TS508:
- Acquire a BT Scan Tool: Obtain a TPMS service tool like the Autel TS508. Ensure it’s updated with the latest firmware for optimal performance and vehicle compatibility.
- Initiate Quick Mode: Power on your scan tool and navigate to the Quick Mode function. Select your vehicle’s make, model, and year, ensuring you choose the correct frequency (e.g., 433Mhz for certain Subaru Outback models).
- Sensor Scan: Access the “Scan Sensor” option within the tool’s menu.
- Activate Spare Sensor: Position the BT scan tool close to the valve stem of your spare tire. Trigger the scan function, usually by selecting “Y” or “Yes” to initiate activation.
- Verify Activation: Observe the scan tool’s display. Successful activation is confirmed when pressure, temperature, and other sensor data appear on the screen. This indicates the sensor is now active and broadcasting.
- Rotate and Drive: Place the activated spare tire in your desired rotation position. Drive your vehicle for a few miles. In most cases, the TPMS system will recognize the sensor within a short drive, displaying correct pressures for all tires.
While it’s not definitively confirmed if this procedure needs repeating with each rotation involving the spare, the simplicity of the process makes it a minor inconvenience compared to persistent TPMS errors.
Utilizing a BT scan tool offers a DIY-friendly approach to TPMS reset and relearn procedures after tire rotations. It empowers vehicle owners to efficiently manage their TPMS, ensuring accurate readings and eliminating unnecessary warning lights. For Subaru Wilderness and similar vehicle owners, investing in a BT scan tool can be a worthwhile solution for seamless tire maintenance and TPMS management.
