2014 Mercedes-Benz GL350 Tire Pressure Warning Light Stays On

Resolve Tire Pressure Warning Light in 2014 Mercedes-Benz GL350

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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 2014 Mercedes-Benz GL350 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 2014 Mercedes-Benz GL350 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 persistent tire pressure warning light on a 2014 Mercedes-Benz GL350?

To effectively diagnose a persistent tire pressure warning light on your 2014 Mercedes-Benz GL350, start with the simplest solutions before moving on to more complex diagnostics. Begin by checking the tire pressure in all four tires, ensuring they are inflated to the manufacturer's recommended levels, as low pressure is a frequent culprit for triggering the warning light. Next, visually inspect each tire for any signs of damage or punctures that could lead to air leaks. If the tires appear to be in good condition, attempt to reset the tire pressure monitoring system following the instructions in your vehicle's manual; this can sometimes resolve the issue if it was a temporary glitch. Additionally, examine the tire pressure sensors for any visible damage or malfunction, as faulty sensors can also cause the warning light to remain illuminated. If, after completing these steps, the warning light persists, it may be time to consult a professional mechanic or dealership for a more thorough diagnosis and repair. By following this structured approach, you can efficiently troubleshoot the issue and potentially save on unnecessary repairs.

What could be causing the tire pressure warning light to stay on in a 2014 Mercedes-Benz GL350?

When the tire pressure warning light remains illuminated in your 2014 Mercedes-Benz GL350, it’s crucial to understand the common problems that could be at play. One of the primary culprits is low tire pressure, which can easily be checked with a tire pressure gauge. Ensuring that all tires are inflated to the manufacturer’s recommended levels is a straightforward first step. If the pressure is adequate, the issue may lie with a faulty tire pressure sensor, which could require recalibration or replacement. Additionally, consider the possibility of sensor batteries running low, as some sensors are battery-operated and may need replacement over time. Another factor to keep in mind is the potential for a malfunction within the tire pressure monitoring system itself, which could stem from wiring issues or problems with the control module. Lastly, remember that extreme temperature fluctuations can affect tire pressure readings, so it’s best to check the pressure when the tires are cold for the most accurate results. By addressing these common issues, you can ensure your vehicle remains safe and well-maintained.

What immediate actions should be taken if the tire pressure warning light remains on in a 2014 Mercedes-Benz GL350?

When the tire pressure warning light remains illuminated in your 2014 Mercedes-Benz GL350, it is crucial to act promptly to ensure your safety and the vehicle's performance. Ignoring this warning can lead to serious consequences, including reduced traction, increased tire wear, and even tire blowouts, which pose significant risks while driving. Start by checking the tire pressure in all four tires with a reliable gauge, ensuring they meet the manufacturer's specifications. If you find any tires are underinflated, inflate them immediately to the correct levels using a dependable air compressor. Additionally, inspect each tire for visible damage, such as punctures or bulges, as these can compromise your safety and require urgent repair or replacement. Once you have addressed any pressure discrepancies or damage, reset the tire pressure monitoring system according to your owner's manual. If the warning light persists despite these efforts, it is essential to consult a qualified mechanic or an authorized Mercedes-Benz service center to diagnose any underlying issues. Taking these steps not only enhances your vehicle's safety but also helps prevent costly repairs down the line.

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2014 Mercedes-Benz GL350 Tire Pressure Warning Light Repairs