2020 Acura MDX Tire Pressure Warning Light Stays On

Resolve Tire Pressure Warning Light in 2020 Acura MDX: 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 2020 Acura MDX 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 2020 Acura MDX 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 2020 Acura MDX?

To effectively diagnose the tire pressure warning light issue in your 2020 Acura MDX, begin with a thorough check of the tire pressure in all four tires using a reliable tire pressure gauge. Ensure that each tire is inflated to the recommended levels specified in your vehicle's manual, as improper inflation is a common cause of warning lights. Next, inspect the tires for any visible damage, such as punctures, cuts, or bulges, which could indicate a leak or other issues. If the tire pressure appears correct and the tires are in good condition, proceed to reset the tire pressure monitoring system following the instructions in your owner's manual, as temporary fluctuations can sometimes trigger the warning light. Additionally, examine the valve stems for any signs of damage or leaks that might be affecting the system. If the warning light remains illuminated after these checks, it may signal 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 systematically addressing these areas, you can effectively troubleshoot and resolve the tire pressure warning light issue.

What could be causing the tire pressure warning light to stay on in a 2020 Acura MDX?

When the tire pressure warning light stays on in a 2020 Acura MDX, it can be attributed to several common problems that are important to address. The most frequent culprit is low tire pressure, which can occur due to slow leaks, changes in temperature, or the natural loss of air over time. Additionally, a malfunctioning tire pressure sensor may fail to provide accurate readings, causing the warning light to remain illuminated. Calibration issues with the sensors can also lead to incorrect readings, necessitating a reset to ensure proper functionality. Moreover, electrical or wiring problems within the tire pressure monitoring system can disrupt communication between the sensors and the vehicle, triggering the warning light. To resolve this issue, begin by checking the tire pressure in all tires and inflating them to the recommended levels. Inspect the tires for any visible damage or leaks, and consider resetting the tire pressure monitoring system according to the manufacturer's instructions. If the warning light continues to stay on, it is advisable to consult a professional mechanic to diagnose and fix any underlying issues. Understanding these potential problems will empower you to effectively troubleshoot the tire pressure warning light in your Acura MDX.

What should I do if the tire pressure warning light on my 2020 Acura MDX stays on?

If the tire pressure warning light on your 2020 Acura MDX stays illuminated, it is essential to take immediate action to ensure your safety and prevent potential vehicle damage. Neglecting this warning can lead to hazardous driving conditions, including decreased traction and accelerated tire wear, which may result in a blowout or other serious accidents. Begin by checking the tire pressure in all four tires, including the spare, using a reliable tire pressure gauge to ensure they align with the manufacturer's recommended levels. If you discover any underinflated tires, inflate them to the correct pressure. Additionally, carefully inspect each tire for any signs of damage, such as punctures, cuts, or bulges, as these can significantly affect tire performance and safety. Once you have made the necessary adjustments, you may need to reset the tire pressure monitoring system, which is typically done through the vehicle's infotainment system or by following the instructions in your owner's manual. If the warning light remains on after these steps, it is advisable to seek assistance from a qualified mechanic or an Acura dealership, as this could indicate a more serious issue with the tire pressure monitoring system itself. By addressing the tire pressure warning light promptly, you not only enhance your safety on the road but also contribute to the overall longevity and performance of your vehicle.

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