2015 Ram 3500 Tire Pressure Warning Light Stays On

Common Causes of the Tire Pressure Warning Light in Your 2015 Ram 3500 and How to Resolve It

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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 2015 Ram 3500 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 2015 Ram 3500 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 are the initial steps to diagnose a persistent tire pressure warning light on a 2015 Ram 3500?

To effectively diagnose a persistent tire pressure warning light on your 2015 Ram 3500, start with the most straightforward solutions. First, check the tire pressure in all four tires, ensuring they are inflated to the levels recommended in your vehicle's manual. This step is crucial, as incorrect tire pressure is a common cause of warning lights. Next, visually inspect each tire for any signs of damage, such as punctures or irregular wear, which could indicate a leak. If the tires appear to be in good condition, attempt to reset the tire pressure monitoring system (TPMS) following the manufacturer's instructions; sometimes, a simple reset can resolve the issue. If the warning light persists, examine the tire pressure sensors for any signs of malfunction or damage, as faulty sensors can trigger the warning light. Finally, if all else fails, use a diagnostic tool to scan for fault codes related to the TPMS, which can provide deeper insights into the underlying problem. By following this methodical approach, you can efficiently identify and address the cause of the tire pressure warning light, ensuring your vehicle remains safe and roadworthy.

What are the common problems that could cause the tire pressure warning light to stay on in a 2015 Ram 3500?

When the tire pressure warning light remains on in a 2015 Ram 3500, it often indicates underlying issues that require attention. One of the most frequent culprits is low tire pressure, which can result from a slow leak, temperature fluctuations, or improper inflation. DIYers should start by checking the tire pressure with a reliable gauge and inflating the tires to the recommended levels. If the pressure is adequate, the problem may lie with the tire pressure sensors themselves. A faulty sensor can fail to provide accurate readings, while dead sensor batteries can also prevent communication with the vehicle's system. In some cases, the sensors may simply malfunction, leading to erroneous alerts. Additionally, electrical issues, such as wiring problems or control module failures, can disrupt the tire pressure monitoring system. By systematically inspecting these components, DIY enthusiasts can identify and address the root cause of the warning light, ensuring both safety and optimal vehicle performance. Regular maintenance and prompt attention to these issues can help keep the tire pressure monitoring system functioning correctly.

How urgent is it to address the tire pressure warning light on my 2015 Ram 3500?

Addressing the tire pressure warning light on your 2015 Ram 3500 is not just a matter of convenience; it is a critical safety concern that requires immediate attention. Ignoring this warning can lead to a cascade of issues, including decreased fuel efficiency and uneven tire wear, which can compromise your vehicle's handling and stability. Underinflated tires significantly increase the risk of blowouts, posing a serious threat to your safety on the road. Moreover, the longer you wait to address the issue, the more likely you are to incur costly repairs and replacements. Regularly checking and adjusting your tire pressure not only enhances your vehicle's performance but also extends the lifespan of your tires, making it a smart and necessary part of vehicle maintenance. Therefore, if your tire pressure warning light illuminates, take action without delay to ensure your safety and the optimal functioning of your Ram 3500.

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