Subaru Justy Tire Pressure Warning Light Stays On

Common Causes for the Tire Pressure Warning Light in Your Subaru Justy and How to Resolve Them

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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 Subaru Justy 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 Subaru Justy 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.

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.

Troubleshooting Tire Pressure Warning Light in a Subaru Justy

When faced with a tire pressure warning light in your Subaru Justy, the first step is to check the tire pressure. Low tire pressure is the most common culprit, often caused by natural air loss or a slow leak from a puncture. Use a reliable tire pressure gauge to ensure all tires are inflated to the manufacturer's recommended levels. If the pressure is adequate but the warning light remains illuminated, the next step is to reset the Tire Pressure Monitoring System (TPMS). This can often be done by following the vehicle's manual instructions or using the reset button, if available. Additionally, driving at a steady speed of around 30 mph for a few minutes can sometimes help recalibrate the system. If the light continues to blink, inspect the tires for any visible punctures or leaks, as these can significantly affect tire performance and safety. Lastly, if all else fails, consider checking the accuracy of the TPMS sensors, as faulty sensors can lead to false warnings. By systematically addressing these potential issues, you can effectively troubleshoot the tire pressure warning light and maintain the safety and performance of your Subaru Justy.

Troubleshooting Tire Pressure Warning Light in a Subaru Justy

When dealing with a tire pressure warning light in your Subaru Justy, it's essential to understand the common problems that may trigger this alert. One of the most frequent culprits is simply low tire pressure, which can occur due to natural air loss or a slow leak from a puncture. Additionally, issues such as improper wheel alignment can also cause the warning light to activate, as misalignment can lead to uneven tire wear and pressure discrepancies. If the light persists even after checking and inflating your tires, it may indicate a malfunctioning tire pressure monitoring system (TPMS) sensor. In some cases, a blinking light could suggest a more serious issue, such as a significant tire puncture or a leak that requires immediate attention. By being aware of these common problems, you can take proactive steps to diagnose and fix the issue, ensuring your vehicle remains safe and roadworthy.

Why is the Tire Pressure Warning Light Staying On in a Subaru Justy?

When the tire pressure warning light remains illuminated in your Subaru Justy, it is crucial to address the issue without delay. Ignoring this warning can lead to serious safety risks, including reduced vehicle handling, increased tire wear, and even tire blowouts, which can result in accidents. Low or high tire pressure can significantly affect your vehicle's performance and fuel efficiency, making it essential to regularly check and maintain the recommended tire pressure levels. Additionally, a malfunctioning tire pressure monitoring system (TPMS) or faulty sensors can also trigger this warning light, indicating that further investigation is necessary. By promptly checking your tire pressure and inspecting for any visible damage, you not only ensure your safety but also prolong the life of your tires and enhance your driving experience. Taking these steps can prevent more significant issues down the road, making it imperative to act swiftly when the tire pressure warning light stays on.

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