2021 Mazda CX-5 Tire Pressure Warning Light Stays On

Resolve Tire Pressure Warning Light in 2021 Mazda CX-5 for Safe Driving Conditions

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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 CX-5 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 CX-5 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 are the initial steps to diagnose a tire pressure warning light that stays on in a 2021 Mazda CX-5?

To effectively diagnose a tire pressure warning light that remains illuminated in your 2021 Mazda CX-5, begin with the most straightforward step: checking the tire pressure. Use a reliable tire pressure gauge to measure the inflation levels of all four tires, including the spare if applicable, ensuring they meet the manufacturer's recommended PSI. If the pressure is low, inflate the tires accordingly, as this is a common reason for the warning light. Next, conduct a visual inspection of each tire for any signs of damage, such as punctures or bulges, which could indicate a slow leak. Additionally, look for any foreign objects lodged in the tire tread, as these can also lead to pressure loss. If you have made adjustments to the tire pressure or repaired any damage, it may be necessary to reset the tire pressure monitoring system (TPMS) to clear the warning light; refer to your vehicle's manual for specific reset instructions. Should the warning light persist despite these efforts, it may be time to consult a mechanic or an authorized Mazda service center for a comprehensive diagnosis, as they can utilize specialized tools to uncover any deeper issues with the TPMS. By following this methodical approach, you can efficiently address the tire pressure warning light and ensure your vehicle's safety and performance.

What could be causing the tire pressure warning light to stay on in a 2021 Mazda CX-5?

When the tire pressure warning light remains on in your 2021 Mazda CX-5, it can be frustrating, but understanding the common problems can help you diagnose the issue. One of the primary culprits is low tire pressure, which is easily checked with a tire pressure gauge. If you find that the pressure is below the recommended levels, simply inflating the tires can often resolve the warning light. However, if the pressure is adequate, the problem may lie with a faulty tire pressure sensor, which could require replacement. Additionally, sensor calibration issues can arise, especially after tire rotations or replacements, necessitating a recalibration to ensure accurate readings. Electrical faults within the tire pressure monitoring system can also trigger the warning light, and these may require professional diagnosis and repair. Lastly, environmental factors such as temperature fluctuations or rough driving conditions can temporarily affect tire pressure readings, so it’s wise to check the pressure after the tires have cooled down. By systematically addressing these potential issues, you can effectively troubleshoot the persistent tire pressure warning light in your Mazda CX-5.

How urgent is it to address the tire pressure warning light on my 2021 Mazda CX-5?

Addressing the tire pressure warning light on your 2021 Mazda CX-5 is an urgent matter that should not be overlooked. Ignoring this warning can lead to serious safety concerns, including reduced traction and an increased risk of tire blowouts, particularly in challenging driving conditions. Additionally, driving with incorrect tire pressure can result in uneven tire wear, which not only affects your vehicle's handling but also diminishes fuel efficiency, leading to higher operating costs. Properly inflated tires are essential for maintaining optimal vehicle performance, ensuring effective braking and cornering, and providing overall stability on the road. Furthermore, neglecting to address low tire pressure can cause significant damage to your tires, wheels, and suspension components, potentially resulting in costly repairs down the line. Therefore, it is crucial to check your tire pressure regularly and inflate your tires to the recommended levels as soon as the warning light activates, ensuring a safe and efficient driving experience.

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