Lexus NX200t Tire Pressure Warning Light Stays On

Common Causes for the Tire Pressure Warning Light in Your Lexus NX200t and How to Resolve Them

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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 Lexus NX200t 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 Lexus NX200t 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.

Troubleshooting Tire Pressure Warning Light in a Lexus NX200t

When dealing with the tire pressure warning light in your Lexus NX200t, it's essential to start with the simplest solutions before moving on to more involved diagnostics. Begin by checking the tire pressure using a reliable gauge to ensure all tires are inflated to the manufacturer's recommended levels. If the pressure is correct, you can attempt to reset the system using the reset button method. This involves pressing and holding the reset button until the light blinks three times, then releasing it and starting the vehicle to allow the system to recalibrate. Alternatively, driving your vehicle for a short distance can also trigger a reset of the tire pressure monitoring system (TPMS). However, it's crucial to remember that resetting the TPMS without first addressing any low tire pressures can lead to misleading warnings. By following these straightforward steps, you can effectively troubleshoot the tire pressure warning light and ensure your Lexus NX200t is safe and road-ready.

What to Do When the Tire Pressure Warning Light Stays On in a Lexus NX200t?

When the tire pressure warning light stays on in your Lexus NX200t, it’s crucial to identify the underlying issues that may be causing this alert. One of the most common problems is low tire pressure, which can result from natural air loss, temperature fluctuations, or punctures. To address this, manually check each tire's pressure with a gauge and inflate them to the recommended levels specified in your owner’s manual or on the sticker located on the driver’s side door jamb. If the tire pressures are adequate, the issue may lie with the tire pressure monitoring system (TPMS) itself. A depleted battery in a TPMS sensor or a malfunctioning receiver can also trigger the warning light. In such cases, you may need to reset the TPMS light by locating the reset button under the steering wheel, pressing it until the light blinks, and then starting the vehicle to allow the system to recalibrate. By understanding these common problems and taking the appropriate steps, you can effectively resolve the tire pressure warning light issue and maintain your vehicle's safety and performance.

Why is the Tire Pressure Warning Light Staying On in a Lexus NX200t?

When the Tire Pressure Warning Light remains illuminated in your Lexus NX200t, it is essential to act swiftly, as ignoring this warning can lead to serious safety risks and costly repairs. A persistent warning light often indicates low air pressure in one or more tires, which can result in uneven tire wear, reduced fuel efficiency, and compromised handling. Additionally, a malfunctioning tire pressure monitoring system (TPMS) could be at fault, potentially leaving you unaware of critical tire conditions. Factors such as temperature changes, new tires, or even a low-pressure spare tire can also trigger this warning. By promptly checking your tire pressures and inspecting for leaks or sensor issues, you not only ensure your safety on the road but also extend the lifespan of your tires and enhance your vehicle's performance. Taking these proactive steps can prevent premature tire failure and the associated risks, making it crucial to address the Tire Pressure Warning Light without delay.

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