2024 Subaru Ascent Tire Pressure Warning Light Stays On

Resolve Tire Pressure Warning Light in 2024 Subaru Ascent: 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 2024 Subaru Ascent 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 Ascent 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.

What steps should I take to diagnose the tire pressure warning light issue in my 2024 Subaru Ascent?

To effectively diagnose the tire pressure warning light issue in your 2024 Subaru Ascent, begin with a systematic approach that prioritizes simple solutions before delving into more complex diagnostics. Start by 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 sticker. Next, conduct a thorough visual inspection of each tire for any signs of damage, such as punctures, cuts, or bulges, which could indicate a loss of pressure. If you find any discrepancies in tire pressure, adjust it accordingly to meet the manufacturer's specifications. After making these adjustments, it may be necessary to reset the tire pressure monitoring system (TPMS); consult your owner's manual for specific instructions on how to perform this reset. Additionally, remember to check the spare tire, as a low-pressure spare can also trigger the warning light. If the warning persists despite these efforts, it may indicate a more serious issue with the TPMS sensors or system, at which point seeking professional assistance from a mechanic or dealership is advisable. By following this diagnostic approach, you can efficiently address the tire pressure warning light issue and ensure your vehicle's safety and performance.

What could cause the tire pressure warning light to remain on in a 2024 Subaru Ascent?

When the tire pressure warning light remains on in your 2024 Subaru Ascent, it’s important to identify the underlying issues that could be causing this alert. The most common reason is low tire pressure, which can be easily checked using a tire pressure gauge. If you find that the pressure is below the recommended levels, inflating the tires should typically resolve the warning light. However, if the tire pressure is adequate, the issue may stem from a faulty tire pressure sensor that might need replacement or recalibration. Additionally, electronic interference from other devices in the vehicle can sometimes trigger the warning light, so it’s essential to ensure there are no conflicting signals. Inspecting the wiring and connections associated with the tire pressure monitoring system for any damage or loose connections is also a prudent step. Seasonal changes, particularly in colder weather, can lead to a drop in tire pressure, making regular checks during these times crucial. Lastly, if everything appears normal, the system may require recalibration to ensure accurate readings. By methodically addressing these potential causes, you can effectively troubleshoot and resolve the persistent tire pressure warning light in your Subaru Ascent.

What should I do if the tire pressure warning light on my 2024 Subaru Ascent stays on?

When the tire pressure warning light on your 2024 Subaru Ascent remains illuminated, it signals a critical issue that requires your immediate attention. Ignoring this warning can lead to unsafe driving conditions, increased tire wear, and potential damage to your vehicle's suspension system. Start by checking the tire pressure of all four tires, including the spare, using a reliable tire pressure gauge. Ensure each tire is inflated to the recommended levels found in your owner’s manual. If you discover any underinflated tires, promptly inflate them to the correct pressure to enhance safety and performance. Additionally, inspect your tires for any visible damage such as punctures or bulges, as these can compromise your vehicle's safety. If you make adjustments to the tire pressure or find damage, you may need to reset the tire pressure monitoring system according to your manual's instructions. However, if the warning light persists after these steps, it is crucial to seek professional assistance to diagnose and resolve any underlying issues. Taking these actions not only ensures your safety on the road but also helps maintain the longevity and efficiency of your Subaru Ascent.

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