2018 Mazda CX-3 Tire Pressure Warning Light Stays On

Resolve Tire Pressure Warning Light in 2018 Mazda CX-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 2018 Mazda CX-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 2018 Mazda CX-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.

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 the tire pressure warning light on a 2018 Mazda CX-3?

To effectively diagnose the tire pressure warning light on your 2018 Mazda CX-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 owner's manual, as improper inflation is a common cause of warning lights. Next, conduct a visual inspection of the tires for any visible damage, such as cuts, punctures, or bulges, which could indicate a leak or other issues. If the tires appear to be in good condition, attempt to reset the tire pressure monitoring system by following the reset instructions in your owner's manual; this can often recalibrate the sensors and turn off the warning light. Additionally, inspect the valve stems for any signs of damage or leaks, as these can also trigger the warning. If the light remains illuminated after these steps, it may be time to consult a professional mechanic to diagnose any underlying issues with the tire pressure monitoring system. By following this methodical approach, you can efficiently troubleshoot the problem and ensure your vehicle's safety on the road.

What could be causing the tire pressure warning light to stay on in a 2018 Mazda CX-3?

When the tire pressure warning light remains on in your 2018 Mazda CX-3, 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 can occur due to natural air loss or temperature changes. Regularly checking and inflating your tires to the manufacturer's recommended pressure can often resolve this problem. If the pressure is adequate, the issue may lie with a faulty tire pressure sensor, which may require replacement if it fails to provide accurate readings. Additionally, sensor calibration can sometimes be off, necessitating a recalibration to ensure proper functionality. Electrical issues, such as damaged wiring or blown fuses, can also trigger the warning light, so inspecting these components is essential. Lastly, be mindful of seasonal changes, as colder weather can lead to decreased tire pressure, prompting the warning light to activate. By systematically addressing these potential issues, you can effectively troubleshoot and resolve the persistent tire pressure warning light in your vehicle.

What immediate steps should be taken if the tire pressure warning light remains on in a 2018 Mazda CX-3?

When the tire pressure warning light remains illuminated in your 2018 Mazda CX-3, it is crucial to act promptly to ensure your safety and the longevity of your vehicle. Ignoring this warning can lead to dangerous driving conditions, including reduced traction and increased tire wear, which may ultimately result in a blowout. Start by checking the tire pressure in all four tires with a reliable gauge, ensuring they meet the manufacturer's specifications. If you find any tires are underinflated, use a quality air compressor to inflate them to the correct levels. Additionally, inspect each tire for visible damage such as punctures or bulges, as these can compromise your safety and require immediate attention. Once you have adjusted the tire pressure and checked for damage, reset the tire pressure monitoring system according to your owner's manual. If the warning light persists, it is essential to seek professional assistance, as continued neglect could lead to more significant issues and costly repairs. Taking these steps not only enhances your driving safety but also helps maintain the overall health of your vehicle.

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