2020 Ram ProMaster 3500 Tire Pressure Warning Light Stays On

Resolve Tire Pressure Warning Light on 2020 Ram ProMaster 3500

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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 2020 Ram ProMaster 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 2020 Ram ProMaster 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 of a TPMS control module failure are failing to alert the driver of underinflation or overinflation of one or more tires, failure to communicate with the body control module or TPMS sensors, or erroneously reporting incorrect tire pressure.

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 Ram ProMaster 3500?

To effectively diagnose the tire pressure warning light issue in your 2020 Ram ProMaster 3500, begin with a systematic approach that prioritizes simpler solutions before delving into more complex diagnostics. Start 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 affecting tire integrity. 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 is advisable for a comprehensive diagnosis and repair. This methodical approach not only helps in identifying the issue efficiently but also ensures that you address the simplest fixes first, potentially saving time and resources.

What could cause the tire pressure warning light to stay on in a 2020 Ram ProMaster 3500?

When the tire pressure warning light stays illuminated in a 2020 Ram ProMaster 3500, it signals potential issues that DIY enthusiasts can troubleshoot. The most common reason is low tire pressure, which can stem from a slow leak, temperature changes, or improper inflation. Start by checking each tire's pressure with a reliable gauge to ensure they are all adequately inflated. If the pressure levels are normal, the problem might be a faulty tire pressure sensor that fails to provide accurate readings. Another possibility is that the sensors require recalibration to function correctly. Additionally, electrical issues, such as damaged wiring or blown fuses, can interfere with the tire pressure monitoring system, causing the warning light to remain on. In some cases, a malfunction within the monitoring system itself may be the culprit, necessitating diagnostic testing to pinpoint the issue. Addressing these problems is essential for vehicle safety and performance, and while some can be resolved at home, more complex issues may require professional assistance.

What immediate actions should be taken if the tire pressure warning light remains on in a 2020 Ram ProMaster 3500?

When the tire pressure warning light remains illuminated in your 2020 Ram ProMaster 3500, it is crucial to act promptly to avoid potential safety hazards and costly repairs. Ignoring this warning can lead to decreased vehicle performance, increased tire wear, and even tire blowouts, which pose serious risks on the road. Start by checking the tire pressure in all tires with a reliable gauge, ensuring they meet the manufacturer's recommended levels. If you find any tires underinflated, inflate them accordingly to restore optimal pressure. Next, conduct a thorough inspection for any visible damage, such as punctures or bulges, which could be the underlying cause of the warning light. If you have adjusted the tire pressure and the light remains on, consult your vehicle's manual for instructions on resetting the tire pressure monitoring system. However, if the warning persists despite these efforts, it is essential to seek professional assistance to diagnose any deeper issues with the monitoring system. Taking these steps not only enhances your safety but also prolongs the life of your tires and vehicle.

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2020 Ram ProMaster 3500 Tire Pressure Warning Light