2021 Ram 3500 Tire Pressure Warning Light Stays On

Troubleshooting Tire Pressure Warning Light Issues in Your 2021 Ram 3500: 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 2021 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 2021 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 steps should I take to diagnose the tire pressure warning light issue on my 2021 Ram 3500?

When diagnosing the tire pressure warning light issue on your 2021 Ram 3500, it's essential to adopt a systematic approach that prioritizes simpler solutions before delving into more complex diagnostics. Begin by checking the tire pressure in all tires, including the spare, using a reliable tire pressure gauge to ensure they meet the recommended levels outlined in your owner's manual. Next, conduct a thorough visual inspection of each tire for any signs of damage, such as punctures or bulges, and remove any foreign objects that may be causing leaks. If the tire pressures are correct and the tires appear undamaged, proceed to reset the tire pressure monitoring system (TPMS) as per the instructions in your manual, which may resolve the warning light issue. However, if the light remains illuminated after these steps, it could indicate a malfunctioning sensor or other underlying problems, at which point consulting a professional mechanic or dealership for a comprehensive diagnosis is advisable. This methodical approach not only helps in effectively addressing the warning light but also ensures that you cover all potential issues systematically.

What could cause the tire pressure warning light to stay on in a 2021 Ram 3500?

When the tire pressure warning light remains on in your 2021 Ram 3500, it can be frustrating, but understanding the common problems can help you diagnose the issue. One of the primary culprits is low tire pressure, which is easily checked and adjusted using a tire pressure gauge. If the pressure is adequate, consider the possibility of a faulty tire pressure sensor, which may require replacement if it’s malfunctioning. Additionally, some sensors are battery-operated, and a dead battery could also trigger the warning light. Inspecting the wiring and connections to the tire pressure monitoring system is another crucial step, as damaged or loose connections can lead to persistent alerts. In some cases, the system may need recalibration to ensure it provides accurate readings. Lastly, be mindful of environmental factors, as extreme temperatures can affect tire pressure and cause the warning light to activate. By systematically addressing these potential issues, you can effectively troubleshoot and resolve the tire pressure warning light concern in your vehicle.

How urgent is it to address the tire pressure warning light on a 2021 Ram 3500?

Addressing the tire pressure warning light on a 2021 Ram 3500 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 stability. Furthermore, driving on under-inflated or over-inflated tires can accelerate uneven tire wear, ultimately shortening the lifespan of your tires and increasing the risk of a blowout. This neglect can also have financial repercussions, as improperly inflated tires can decrease fuel efficiency, leading to higher fuel costs over time. To ensure optimal performance and safety, it is essential to regularly check and adjust your tire pressure as needed, making it a priority to address any warning lights promptly. Taking these steps not only enhances your driving experience but also safeguards your vehicle and your well-being on the road.

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