2012 Subaru Outback Tire Pressure Warning Light Stays On

Tire Pressure Warning Light in 2012 Subaru Outback: Causes and Solutions

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Reviewed by
Andrew Hajjar
Written by RepairPal Car Genius
Updated January 14, 2025
0%
40% chance it's the
Tire Leaking Air
0%
30% chance it's the
Wheel Leaking Air
0%
15% chance it's the
Tire Pressure Monitoring System
0%
15% chance it's
Something else
The most common reasons a 2012 Subaru Outback tire pressure warning light stays on are a leaking tire, a wheel that no longer holds air, or a faulty tire pressure monitoring system.
  • Tire Leaking Air: A puncture, valve stem issue, or rim damage can cause a tire to leak air, leading to loss of pressure.
  • Wheel Leaking Air: A puncture or damage to the tire or rim can cause air to leak, resulting in a loss of tire pressure.
  • Tire Pressure Monitoring System: A malfunctioning tire pressure monitoring system can be caused by faulty sensors or a dead battery in the sensor units.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a 2012 Subaru Outback tire pressure warning light stays on?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

When a relearn is needed, for any reason, the TPMS warning light will illuminate, and many vehicles will display a message relating to the TPMS system being inoperative or loosing communication. It is important to keep a watchful eye on tire pressures when this system is having issues because there is no warning available for underinflation or overinflation of the tires.

The only symptoms requiring diagnosis for the tire pressure monitoring system warning lamp is if the warning lamp has illuminated while the tires have correct air pressure, or if the air pressure for the tires is out of specification and the warning lamp is off. This is because the overwhelming majority of cases where the TPMS lamp illuminates is due to the change in ambient temperature.

What are the initial steps to diagnose a persistent tire pressure warning light on a 2012 Subaru Outback?

To effectively diagnose a persistent tire pressure warning light on your 2012 Subaru Outback, start by checking the air pressure in all four tires, ensuring they are inflated to the specifications found in your owner's manual or on the tire information placard. It's best to perform this check when the tires are cold, as temperature fluctuations can impact pressure readings. After adjusting the tire pressure, take your vehicle for a short drive at speeds of 25 mph or more; this allows the Tire Pressure Monitoring System (TPMS) to recalibrate and potentially turn off the warning light if low pressure was the sole issue. If the light remains illuminated, inspect each tire for visible damage or leaks, as any compromised tire may trigger the warning. Don’t forget to check the spare tire as well, since some TPMS systems monitor it too. Pay attention to the warning light's behavior; if it blinks briefly before staying on, this indicates a fault within the TPMS itself, which may require specialized tools for further diagnosis. If necessary, consider using the Subaru Select Monitor and the appropriate registration tools to assess and reset the tire pressure sensors. By following this structured approach, you can efficiently identify whether the problem lies with tire pressure or the TPMS system itself.

What could be causing the tire pressure warning light to stay on in a 2012 Subaru Outback?

When the tire pressure warning light stays on in a 2012 Subaru Outback, it can be attributed to several common problems that are relatively easy to diagnose and address. One of the primary culprits is low tire pressure, which is often the result of underinflation. To resolve this, check the pressure of all four tires and inflate them to the recommended levels found on the driver’s side door jamb or in the owner’s manual. If the tires are properly inflated but the light remains on, inspect for slow leaks or flat tires, as these can also trigger the warning. A visual inspection can help identify any visible damage or deflation; if a tire is flat, it’s best to change it or call for assistance. Additionally, overinflated tires can cause the light to activate, so ensure that the pressure is within the specified range. Weather conditions can also play a role; colder temperatures can lead to a drop in tire pressure, so driving the vehicle for a short distance may help reset the system. If the light continues to stay on, it may indicate a malfunction in the tire pressure monitoring system (TPMS), which could require professional attention to diagnose sensor issues or communication problems. Lastly, if any tire sensors have been replaced or the wheels changed, ensure that the sensor IDs are properly registered, as failure to do so can keep the warning light illuminated. By systematically checking these potential issues, you can effectively troubleshoot and resolve the tire pressure warning light concern in your Subaru Outback.

How urgent is it to address the tire pressure warning light that stays on in a 2012 Subaru Outback?

Addressing the tire pressure warning light that remains illuminated in your 2012 Subaru Outback is of utmost urgency due to the potential safety risks and vehicle damage it signifies. Ignoring this warning can lead to underinflated tires, which compromise traction and handling, increasing the likelihood of a tire blowout, especially at high speeds. Furthermore, consistently low tire pressure can cause uneven tire wear and overheating, ultimately shortening the lifespan of your tires and potentially leading to a flat. If the warning light blinks and then stays on, it may indicate a malfunction in the Tire Pressure Monitoring System (TPMS), which requires immediate attention to ensure accurate monitoring of tire pressures. Therefore, it is essential to check and adjust your tire pressures promptly, as well as to seek professional help if the warning persists after adjustments. Taking these steps not only enhances your safety on the road but also protects your vehicle from unnecessary wear and costly repairs.

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