2008 INFINITI FX45 Tire Pressure Warning Light Stays On

Resolve Tire Pressure Warning Light in 2008 INFINITI FX45: 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 2008 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 2008 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.

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 steps should I take to diagnose the tire pressure warning light issue in my 2008 INFINITI FX45?

To effectively diagnose the tire pressure warning light issue in your 2008 INFINITI FX45, begin with a straightforward approach that prioritizes simpler checks before moving on to more complex diagnostics. Start by checking the tire pressure in all four tires using a reliable tire pressure gauge, ensuring that the readings align with the recommended PSI found in your owner's manual or on the driver's side door jamb sticker. Next, visually inspect each tire for any signs of damage, such as punctures, cuts, or bulges, which could indicate a loss of pressure. Don’t overlook the valve stems; check them for any signs of wear or leaks, as faulty valve stems can also lead to air loss and trigger the warning light. If these initial checks do not resolve the issue, consider using an OBD-II scanner to look for any fault codes related to the tire pressure monitoring system (TPMS), which can provide insights into the specific problem. In some cases, simply resetting the TPMS may clear the warning light, so refer to your owner's manual for the reset procedure. If you still cannot identify the issue, it may be time to consult a professional mechanic who can conduct a thorough inspection and address any underlying problems. By following this methodical approach, you can efficiently diagnose and potentially resolve the tire pressure warning light issue in your vehicle.

What could cause the tire pressure warning light to remain on in a 2008 INFINITI FX45?

When the tire pressure warning light stays on in a 2008 INFINITI FX45, it can be a source of concern for any DIY car owner. 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, the next potential issue could be a faulty tire pressure sensor, which may need replacement if it is not functioning correctly. Additionally, sensor calibration can sometimes be off, and recalibrating the sensors can often be done with the right tools or by seeking professional help. It's also wise to inspect the vehicle's electrical system for any wiring problems or blown fuses that could be causing the light to remain on. If these steps do not resolve the issue, there may be a malfunction within the tire pressure monitoring system itself, which could require more in-depth diagnostic testing. By addressing these common problems, you can ensure your vehicle remains safe and performs optimally, highlighting the importance of regular maintenance and timely repairs.

How urgent is it to address the tire pressure warning light on a 2008 INFINITI FX45?

Addressing the tire pressure warning light on a 2008 INFINITI FX45 is not just a matter of convenience; it is a critical safety issue that demands immediate attention. Ignoring this warning can lead to dangerous driving conditions, as improper tire pressure significantly impacts vehicle handling, braking, and overall stability. Furthermore, neglecting to check and adjust tire pressure can result in uneven tire wear, which not only shortens the lifespan of your tires but may also lead to costly replacements sooner than expected. Additionally, maintaining the correct tire pressure is essential for optimal fuel efficiency; under-inflated tires can increase fuel consumption, putting a strain on your wallet. Lastly, ensuring that your tires are properly inflated enhances the overall performance of your vehicle, allowing for a smoother and safer driving experience. Therefore, it is crucial to address the tire pressure warning light promptly to safeguard your safety, extend the life of your tires, and maintain the efficiency and performance of your INFINITI FX45.

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2008 INFINITI FX45 Tire Pressure Warning Light Solutions