2019 Mercedes-Benz AMG GT S Tire Pressure Warning Light Stays On

Tire Pressure Warning Light Issues in 2019 Mercedes-Benz AMG GT S: Causes and Solutions

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Reviewed by
Andrew Hajjar
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 2019 Mercedes-Benz AMG GT S 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 2019 Mercedes-Benz AMG GT S 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 2019 Mercedes-Benz AMG GT S?

To effectively diagnose a tire pressure warning light that remains illuminated in your 2019 Mercedes-Benz AMG GT S, start by checking the tire pressure in all four tires, ensuring they are inflated to the manufacturer's recommended levels. Low tire pressure is a frequent culprit for this warning light. Next, visually inspect each tire for any signs of damage, such as punctures or bulges, which could lead to air loss. If the tires appear to be in good condition, proceed to reset the tire pressure monitoring system following the instructions in your vehicle's manual, as this can sometimes clear false warnings. Additionally, examine the valve stems for any leaks or damage that might be affecting tire pressure. If the warning light persists, using a diagnostic tool to scan for fault codes related to the tire pressure monitoring system can provide further insights into any underlying issues that may require attention. By following these steps, you can systematically address the warning light and ensure your vehicle's safety and performance.

What could be causing the tire pressure warning light to stay on in a 2019 Mercedes-Benz AMG GT S?

When the tire pressure warning light stays on in a 2019 Mercedes-Benz AMG GT S, it can be a source of concern for any DIY enthusiast. The first step is to check the tire pressure in all four tires, as low pressure is the most common reason for the warning light to illuminate. Ensure that each tire is inflated to the manufacturer's recommended levels, which can usually be found on a sticker inside the driver's door. If the pressure is correct and the light remains on, the issue may be related to a faulty tire pressure sensor, which may need replacement. Additionally, the sensors could require recalibration to function correctly, a process that typically requires professional assistance. It's also wise to inspect the tires for any leaks or punctures, as these can lead to gradual pressure loss and trigger the warning light. Lastly, consider the possibility of an electrical malfunction within the tire pressure monitoring system, which may necessitate a more in-depth diagnostic approach. Addressing these potential issues not only ensures your safety on the road but also helps maintain the performance of your vehicle.

What immediate steps should be taken to address the persistent tire pressure warning light in a 2019 Mercedes-Benz AMG GT S?

When dealing with a persistent tire pressure warning light in your 2019 Mercedes-Benz AMG GT S, it is crucial to act promptly to ensure your safety and prevent further damage to your vehicle. Start by checking the tire pressure of all four tires, as under-inflation can lead to poor handling and increased tire wear. Refer to your owner's manual for the recommended pressure levels. Next, inspect each tire for any visible signs of damage, such as punctures or bulges, which could compromise their integrity and lead to a blowout. If the tires appear to be in good condition, attempt to reset the tire pressure monitoring system following the manufacturer's guidelines; this can often resolve minor glitches that trigger the warning light. However, if the light remains illuminated after these steps, it is essential to consult a qualified mechanic. Ignoring the warning could result in unsafe driving conditions or costly repairs, especially if faulty sensors are at play. Taking these immediate actions not only enhances your safety on the road but also helps maintain the performance and longevity of your vehicle.

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2019 Mercedes-Benz AMG GT S Tire Pressure Warning Solutions