2004 INFINITI FX45 Tire Pressure Warning Light Stays On

Resolve Tire Pressure Warning Light in 2004 INFINITI FX45: Causes and Solutions

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Reviewed by
Aisha
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 2004 INFINITI FX45 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 2004 INFINITI FX45 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.

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 of a TPMS control module failure are failing to alert the driver of underinflation or overinflation of one or more tires, failure to communicate with the body control module or TPMS sensors, or erroneously reporting incorrect tire pressure.

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 persistent tire pressure warning light on a 2004 INFINITI FX45?

To effectively diagnose a persistent tire pressure warning light on your 2004 INFINITI FX45, start by checking the tire pressure in all four tires, ensuring they are inflated to the manufacturer's recommended levels, as low pressure is a frequent culprit. Next, visually inspect each tire for any signs of damage or punctures that could lead to air loss. If the tires appear to be in good condition, attempt to reset the tire pressure monitoring system following the instructions in your vehicle's manual, as this can sometimes resolve the issue. Additionally, examine the tire pressure sensors for any visible damage or malfunction. If the warning light remains illuminated, using a diagnostic tool to scan for fault codes related to the tire pressure monitoring system can provide further insights into the problem. By following this structured approach, you can efficiently identify and address the cause of the warning light, ensuring your vehicle remains safe and roadworthy.

What could be causing the tire pressure warning light to stay on in a 2004 INFINITI FX45?

When the tire pressure warning light stays on in a 2004 INFINITI FX45, it can be a source of concern for any DIY enthusiast. The first step is to check the tire pressure in all four tires, as low pressure is the most common reason for the warning light to illuminate. If the tires are properly inflated but the light persists, the issue may stem from a faulty tire pressure sensor, which may need replacement. Additionally, sensor calibration can sometimes be off, requiring a recalibration process to ensure accurate readings. It's also important to inspect the vehicle's electrical system for any wiring issues or blown fuses that could be causing the warning light to stay on. Lastly, a malfunctioning control module for the tire pressure monitoring system could be the culprit. If you've addressed these potential issues and the light remains illuminated, consulting a qualified mechanic for a thorough diagnosis is recommended to ensure your vehicle's safety and performance.

What should I do if the tire pressure warning light on my 2004 INFINITI FX45 stays on?

When the tire pressure warning light on your 2004 INFINITI FX45 remains illuminated, it is crucial to take immediate action to ensure your safety and the longevity of your vehicle. Ignoring this warning can lead to serious consequences, including reduced traction, increased tire wear, and even tire blowouts, which can pose significant risks while driving. Start by checking the tire pressure in all tires, including the spare, and inflate them to the recommended levels found in your owner's manual. If you discover any damage, such as punctures or bulges, it is essential to have them professionally inspected, as neglecting these issues can lead to further complications. After adjusting the tire pressure, resetting the tire pressure monitoring system is often necessary to clear the warning light. If the light persists despite these efforts, it may indicate a malfunction within the monitoring system itself, necessitating a visit to a qualified mechanic. Addressing these issues promptly not only ensures your safety on the road but also helps maintain the overall health of your vehicle.

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