2021 Mazda 3 Tire Pressure Warning Light Stays On

Tire Pressure Warning Light in 2021 Mazda 3: 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 2021 Mazda 3 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 2021 Mazda 3 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 tire pressure monitoring sensor fails, the tire pressure monitoring system control module will recognize a loss in communication and turn on the warning lamp which indicates the failure. This is most often the case. However, the tire pressure monitoring sensor may also fail by reporting incorrect tire pressures. This could cause a flat tire to go unrecognized, or a properly inflated tire to signal a low or high tire pressure warning.

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.

Wheels offer very few symptoms, but these symptoms should never be ignored. Visible cracks on the wheels may appear, especially after hitting a large bump, Most often, this will also be accompanied by loss of air from the tire on that wheel. Also, vibration in the steering wheel is very common when the tire is out of balance, and improper wheel nuts or bolts can cause creaking and popping noises to develop. Again, there are very few symptoms, but they should not be ignored.

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 2021 Mazda 3?

To effectively diagnose the tire pressure warning light issue in your 2021 Mazda 3, begin with a thorough check of the tire pressure in all four tires using a reliable tire pressure gauge. Ensure that each tire is inflated to the recommended levels outlined in your vehicle's manual, as improper inflation is a common trigger for the warning light. Next, inspect the tires for any visible damage, such as punctures, cuts, or bulges, which could indicate a more serious problem. If the tire pressure appears correct and the tires are in good condition, consider resetting the tire pressure monitoring system, as temporary fluctuations can sometimes cause the warning light to activate. Additionally, examine the valve stems for any signs of damage or leaks that might be contributing to pressure loss. If, after these steps, the warning light remains illuminated, it is advisable to consult a mechanic or visit a Mazda dealership for a comprehensive inspection and diagnosis. By following this diagnostic approach, you can systematically address the issue and ensure your vehicle's safety on the road.

What are the common problems that could cause the tire pressure warning light to stay on in a 2021 Mazda 3?

When the tire pressure warning light remains illuminated in a 2021 Mazda 3, it often indicates underlying issues that require attention. The most prevalent cause is low tire pressure, which can result from punctures, leaks, or natural air loss over time. It's essential to regularly check the tire pressure and inflate them to the recommended levels. Another potential culprit is a faulty tire pressure sensor; if the sensor is malfunctioning, it may fail to provide accurate readings, leading to the warning light staying on. Additionally, some sensors are powered by batteries that can deplete, causing communication failures with the vehicle's system. In some instances, the tire pressure monitoring system may need recalibration to ensure it functions correctly, as improper calibration can trigger false warnings. Lastly, electrical issues, such as wiring problems or blown fuses, can also interfere with the system's operation. By systematically addressing these common problems, you can effectively troubleshoot and resolve the tire pressure warning light issue in your Mazda 3.

What should I do if the tire pressure warning light on my 2021 Mazda 3 stays on?

When the tire pressure warning light on your 2021 Mazda 3 remains illuminated, it is crucial to address the issue without delay. Ignoring this warning can lead to unsafe driving conditions, as underinflated tires can compromise vehicle handling and increase the risk of tire blowouts. Start by checking the tire pressure in all four tires with a reliable gauge, ensuring they meet the specifications outlined in your owner's manual. If you discover any tires are underinflated, inflate them to the recommended levels, which may help reset the tire pressure monitoring system and turn off the warning light. Additionally, inspect your tires for any visible damage, such as punctures or leaks, as these can exacerbate the problem and require immediate repair. If the warning light persists after addressing tire pressure and inspecting for damage, consult your owner's manual for instructions on manually resetting the system. Should the light remain on, it may indicate a more serious issue with the tire pressure monitoring system itself, necessitating a visit to a qualified mechanic or authorized Mazda service center. Taking these steps not only ensures your safety on the road but also helps prevent potential damage to your vehicle, making it essential to act promptly when faced with this warning.

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