2020 Mazda MX-5 Miata Tire Pressure Warning Light Stays On

Tire Pressure Warning Light in 2020 Mazda MX-5 Miata: 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 2020 Mazda MX-5 Miata 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 2020 Mazda MX-5 Miata 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 2020 Mazda MX-5 Miata?

To effectively diagnose the tire pressure warning light issue in your 2020 Mazda MX-5 Miata, begin with a straightforward approach that prioritizes simple checks before moving on to more complex diagnostics. Start by using a tire pressure gauge to measure the pressure in all four tires, ensuring they meet the recommended levels outlined in your vehicle's manual. If the pressure is low, inflate the tires accordingly. Next, visually inspect each tire for any signs of damage, such as punctures or bulges, which could indicate a leak. If the tires appear to be in good condition, consider resetting the tire pressure monitoring system, as temporary fluctuations can sometimes trigger the warning light. Additionally, examine the valve stems for any leaks or damage, as these can also affect tire pressure. If the warning light remains illuminated after these checks, it may be time to consult a mechanic or dealership for a comprehensive diagnosis of the tire pressure monitoring system. By following this methodical approach, you can efficiently identify and resolve the issue with your tire pressure warning light.

What could be causing the tire pressure warning light to remain on in a 2020 Mazda MX-5 Miata?

When the tire pressure warning light remains on in your 2020 Mazda MX-5 Miata, it’s crucial to identify the underlying issues that may be causing this alert. The most common reason is low tire pressure, which can be easily checked and adjusted to meet the recommended specifications. If the tire pressure is adequate, the next step is to consider the possibility of a faulty tire pressure sensor; these sensors can fail and may need replacement to ensure accurate readings. Additionally, sensor calibration issues can occur, requiring a recalibration process that is typically performed at a Mazda dealership or by a qualified technician. Electrical faults within the tire pressure monitoring system can also lead to the warning light staying illuminated, and diagnosing these problems may necessitate professional help. Furthermore, external factors such as drastic temperature changes, driving over rough terrain, or visible tire damage can trigger the warning light, making it essential to inspect your tires for any signs of wear or punctures. By methodically addressing these potential causes, you can effectively troubleshoot and resolve the tire pressure warning light issue in your Miata.

What immediate steps should be taken if the tire pressure warning light remains on in a 2020 Mazda MX-5 Miata?

When the tire pressure warning light remains illuminated in your 2020 Mazda MX-5 Miata, it is crucial to act swiftly to avoid potential safety hazards and costly repairs. Ignoring this warning can lead to decreased vehicle performance, increased tire wear, and even tire blowouts, which pose serious risks on the road. Start by checking the tire pressure in all four tires, ensuring they are inflated to the recommended levels found in your owner's manual or on the driver's side door jamb. If you discover any underinflated tires, inflate them promptly to reset the tire pressure monitoring system, which may turn off the warning light. Additionally, visually inspect your tires for any signs of damage, such as punctures or bulges, as these issues can exacerbate the problem. If the warning light persists after adjusting the tire pressure, consult your owner's manual for instructions on resetting the system. Should the light remain on despite your efforts, it is advisable to seek professional assistance to diagnose and resolve any underlying issues. Taking these steps not only ensures your safety but also helps maintain the longevity and performance of your vehicle.

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