2021 Mercedes-Benz Sprinter 3500 Tire Pressure Warning Light Stays On

Resolve Tire Pressure Warning Light in 2021 Mercedes-Benz Sprinter 3500

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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 Mercedes-Benz Sprinter 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 Mercedes-Benz Sprinter 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 are the initial steps to diagnose a tire pressure warning light that stays on in a 2021 Mercedes-Benz Sprinter 3500?

When faced with a tire pressure warning light that remains illuminated in your 2021 Mercedes-Benz Sprinter 3500, the first step is to manually check the tire pressure in all tires, including the spare. This ensures that each tire is inflated to the manufacturer's recommended levels, which can typically be found on a sticker inside the driver's door or in the owner's manual. Next, inspect each tire for any visible damage such as cuts, punctures, or bulges, as these issues can lead to pressure loss and trigger the warning light. If the tire pressure is correct and there are no signs of damage, consider resetting the tire pressure monitoring system (TPMS) to clear any false alerts; instructions for this can be found in the vehicle's manual. If the warning light persists, it may indicate a malfunctioning tire pressure sensor, which could require professional diagnostic equipment to identify. Should these initial troubleshooting steps not resolve the issue, it is advisable to consult a certified mechanic or dealership for a comprehensive inspection, as they possess the expertise and tools necessary to diagnose and repair any underlying problems with the TPMS system. By following these steps, you can effectively address the tire pressure warning light and ensure your vehicle's safety on the road.

What could cause the tire pressure warning light to stay on in a 2021 Mercedes-Benz Sprinter 3500?

When the tire pressure warning light stays on in a 2021 Mercedes-Benz Sprinter 3500, it is essential to identify the underlying issues to ensure safe driving. The most common reason for this warning light is low tire pressure, which can result from natural air loss or punctures. Regularly checking and maintaining the recommended tire pressure is vital for both safety and vehicle performance. Another possibility is a faulty tire pressure sensor; if the sensor is not functioning correctly, it may need to be replaced to restore accurate readings. Additionally, the sensors may require recalibration, as miscalibrated sensors can lead to incorrect pressure alerts. Electrical or wiring issues within the tire pressure monitoring system can also cause the warning light to remain illuminated, necessitating a thorough inspection to detect any faults. Lastly, a malfunction within the tire pressure monitoring system itself could be the culprit, requiring diagnostic efforts to identify and resolve the problem. By addressing these issues promptly, you can enhance your vehicle's safety and performance while preventing future complications through regular maintenance checks.

How urgent is it to address the tire pressure warning light on a 2021 Mercedes-Benz Sprinter 3500?

Addressing the tire pressure warning light on a 2021 Mercedes-Benz Sprinter 3500 is of utmost urgency due to the significant safety risks and potential vehicle damage associated with neglecting this warning. When the tire pressure is not at the recommended levels, it can severely compromise the vehicle's handling and braking capabilities, leading to dangerous driving conditions. Additionally, improper tire pressure can accelerate tire wear and diminish fuel efficiency, resulting in higher costs over time. The risk of tire damage, including blowouts or flats, increases when driving on under-inflated tires, which can not only be hazardous but also lead to expensive repairs. Therefore, it is essential to check and adjust the tire pressure as soon as the warning light illuminates, ensuring optimal vehicle performance and safety on the road. Taking prompt action not only protects the vehicle but also enhances the overall driving experience.

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