2024 Subaru Legacy Tire Pressure Warning Light Stays On

Resolve Persistent Tire Pressure Warning Light in 2024 Subaru Legacy

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Reviewed by
Bo Fader
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 2024 Subaru Legacy 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 2024 Subaru Legacy 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 steps should I take to diagnose the tire pressure warning light issue on my 2024 Subaru Legacy?

When diagnosing the tire pressure warning light issue on your 2024 Subaru Legacy, it's essential to adopt a systematic approach that prioritizes simpler solutions before delving into more complex diagnostics. Begin by manually checking the tire pressure in all four tires using a reliable tire pressure gauge, ensuring that the readings align with the recommended PSI found in your owner's manual or on the driver's side door jamb. Next, inspect each tire for visible damage, such as punctures or bulges, which could indicate a loss of pressure. If you discover any tires that are low, fill them to the appropriate PSI and recheck the pressure to confirm accuracy. After adjusting the tire pressure, consult your owner's manual to see if a manual reset of the tire pressure monitoring system is necessary, as this step can often resolve the warning light issue. If the light persists despite these efforts, it may signal a malfunctioning tire pressure sensor, which would require professional inspection. Should you find yourself unable to resolve the issue independently, seeking assistance from a certified mechanic or dealership is advisable to ensure your vehicle is safe and functioning correctly. By following this diagnostic approach, you can effectively address the tire pressure warning light concern and maintain the performance of your Subaru Legacy.

What could cause the tire pressure warning light to stay on in a 2024 Subaru Legacy?

When the tire pressure warning light stays illuminated in your 2024 Subaru Legacy, it signals that there may be underlying issues that need your attention. The most common reason for this warning is low tire pressure, which can result from air loss or tire damage. Regularly checking and maintaining your tire pressure at the recommended levels is essential for safe driving. Another possibility is a malfunctioning tire pressure sensor; if the sensor is defective, it may not accurately reflect the tire pressure, causing the warning light to remain on. Additionally, if you've recently changed or rotated your tires, the sensors might require recalibration to ensure they function correctly. Electrical problems within the tire pressure monitoring system can also lead to persistent warning lights, which may necessitate professional evaluation. Lastly, be aware that significant temperature changes can affect tire pressure, potentially triggering the warning light. If you've addressed the tire pressure and the light continues to stay on, it's wise to consult a qualified mechanic or visit a Subaru dealership for a thorough inspection to maintain your vehicle's safety and performance.

How urgent is it to address the tire pressure warning light that stays on in a 2024 Subaru Legacy?

Addressing the tire pressure warning light in your 2024 Subaru Legacy is not just a matter of convenience; it is a critical safety issue that requires immediate attention. Ignoring this warning can lead to serious safety concerns, as improper tire pressure significantly affects your vehicle's handling and braking capabilities, increasing the risk of accidents. Additionally, neglecting to check and adjust your tire pressure can result in uneven tire wear, which not only shortens the lifespan of your tires but also raises the likelihood of a blowout while driving. Furthermore, underinflated tires can severely impact your fuel efficiency, leading to higher fuel costs over time. To ensure optimal performance and safety, it is essential to regularly monitor your tire pressure and address any warning lights promptly. By doing so, you not only protect yourself and your passengers but also enhance the longevity and efficiency of your vehicle.

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