2021 Acura TLX Tire Pressure Warning Light Stays On

Resolve Tire Pressure Warning Light in 2021 Acura TLX: Causes and Solutions

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Reviewed by
Devin Cabugcal
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 2021 Acura TLX 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 2021 Acura TLX 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 on my 2021 Acura TLX?

To effectively diagnose the tire pressure warning light issue on your 2021 Acura TLX, begin with the simplest solutions before progressing to more complex diagnostics. Start by checking the tire pressure in all four tires using a reliable tire pressure gauge, ensuring they are inflated to the levels recommended in your vehicle's manual. If the pressure is correct, visually inspect each tire for any signs of damage, such as punctures or bulges, which could be affecting performance. If everything appears normal, consider resetting the tire pressure monitoring system, as temporary fluctuations can sometimes trigger the warning light. Additionally, examine the valve stems for any leaks or damage that might be causing the issue. If the warning light remains illuminated after these checks, it may indicate a more serious problem with the tire pressure monitoring system itself, at which point consulting a mechanic or dealership for a professional diagnosis is advisable. By following this structured approach, you can efficiently identify and resolve the tire pressure warning light issue.

What are the common causes for the tire pressure warning light to remain on in a 2021 Acura TLX?

When the tire pressure warning light remains on in a 2021 Acura TLX, it can be a source of concern for DIY enthusiasts looking to troubleshoot the issue. The most common cause is low tire pressure, which can result from natural air loss, temperature changes, or a slow leak. To start, checking the tire pressure with a reliable gauge is essential. If the pressure is within the recommended range, the next step is to consider the possibility of a faulty tire pressure sensor. These sensors can malfunction, leading to incorrect readings and a persistent warning light. Additionally, the sensors are powered by batteries that may need replacement over time. If the sensors appear to be functioning correctly but the warning light remains illuminated, recalibrating them could be necessary to ensure accurate detection of tire pressure levels. Lastly, it’s important to be aware of potential system malfunctions, which may involve wiring issues or a faulty control module. By systematically addressing these common problems, DIYers can enhance their vehicle's safety and performance while gaining valuable hands-on experience.

How urgent is it to address the tire pressure warning light on a 2021 Acura TLX?

Addressing the tire pressure warning light on your 2021 Acura TLX is not just a matter of convenience; it is a critical safety concern that demands immediate attention. Ignoring this warning can lead to dangerous driving conditions, as improper tire pressure significantly impacts your vehicle's handling, braking, and overall stability. Furthermore, driving on under-inflated or over-inflated tires can accelerate uneven tire wear, ultimately shortening their lifespan and leading to costly replacements. Additionally, maintaining the correct tire pressure is essential for optimal fuel efficiency; neglecting this aspect can result in decreased gas mileage, which translates to higher fuel expenses over time. Therefore, it is imperative to take the tire pressure warning seriously, as timely action not only ensures your safety but also enhances the performance and longevity of your vehicle.

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