2017 Toyota Mirai Tire Pressure Warning Light Stays On

Resolve the Persistent Tire Pressure Warning Light in 2017 Toyota Mirai

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Reviewed by
Bo Fader
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 2017 Toyota Mirai 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 2017 Toyota Mirai 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 on my 2017 Toyota Mirai?

When diagnosing the tire pressure warning light issue on your 2017 Toyota Mirai, it's essential to adopt a systematic approach that prioritizes simpler solutions before delving into more complex diagnostics. Begin by checking the tire pressure in all four tires using a reliable tire pressure gauge, ensuring they meet the recommended levels outlined in your owner's manual. This initial step can often resolve the warning light if the tires are simply under-inflated. Next, conduct a thorough visual inspection of each tire for any signs of damage, such as cuts, punctures, or foreign objects lodged in the tread, as these can also trigger the warning light. If the tires appear to be in good condition, proceed to reset the tire pressure monitoring system according to the instructions provided in your manual, as temporary fluctuations can sometimes cause the light to activate. After resetting, take your vehicle for a short drive; this allows the system to recalibrate and may turn off the warning light if everything is in order. However, if the light remains illuminated despite these efforts, it is prudent to consult a mechanic or a Toyota service center for a comprehensive diagnosis, as there may be underlying issues with the tire pressure monitoring system that require professional attention. By following this structured diagnostic approach, you can effectively address the tire pressure warning light issue and ensure your vehicle's safety on the road.

What could cause the tire pressure warning light to stay on in a 2017 Toyota Mirai?

When the tire pressure warning light remains illuminated in your 2017 Toyota Mirai, 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. Ensure all tires are inflated to the manufacturer's recommended levels, as even a slight drop can trigger the warning light. If the pressure is adequate, consider the possibility of a faulty tire pressure sensor; these sensors can wear out over time and may need replacement. Additionally, sensor calibration issues can arise, particularly if tires have been recently changed or rotated, necessitating a recalibration to ensure accurate readings. Electrical problems within the tire pressure monitoring system can also cause the light to stay on, so inspecting the wiring and connections for any faults is essential. Lastly, a simple system reset might resolve the issue, which can often be performed through the vehicle's onboard computer. If these steps do not resolve the warning light, consulting a qualified mechanic is advisable to identify and rectify any underlying problems.

What should I do if the tire pressure warning light on my 2017 Toyota Mirai stays on?

When the tire pressure warning light on your 2017 Toyota Mirai stays illuminated, it is essential to take immediate action to prevent safety risks and potential vehicle damage. Neglecting this warning can lead to compromised vehicle handling, increased tire wear, and even dangerous blowouts while driving. Begin by checking the tire pressure in all four tires, including the spare, using a reliable tire pressure gauge to ensure they are inflated to the manufacturer's recommended levels. If you discover any underinflated tires, inflate them to the correct pressure without delay. Additionally, carefully inspect each tire for any signs of damage, such as punctures, cuts, or bulges, as these issues can also trigger the warning light. After adjusting the tire pressure and checking for damage, you may need to reset the tire pressure monitoring system, which is typically done through the vehicle's onboard menu. If the warning light remains on despite these efforts, it is wise to seek assistance from a qualified mechanic, as there may be an underlying issue with the monitoring system that requires professional attention. By addressing these concerns promptly, you not only ensure your safety but also enhance the performance and longevity of your Toyota Mirai.

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