2021 Mercedes-Benz GLC63 AMG S Tire Pressure Warning Light Stays On

Address Tire Pressure Warning Light Issues in 2021 Mercedes-Benz GLC63 AMG S

Find Repair Location
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 GLC63 AMG 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 2021 Mercedes-Benz GLC63 AMG 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 steps should I take to diagnose the tire pressure warning light issue in my 2021 Mercedes-Benz GLC63 AMG S?

To effectively diagnose the tire pressure warning light issue in your 2021 Mercedes-Benz GLC63 AMG S, begin by manually checking the tire pressure in all four tires using a reliable tire pressure gauge. Ensure that the readings align with the manufacturer's recommended levels, which can typically be found in your owner's manual or on a sticker located inside the driver's door jamb. Next, conduct a thorough visual inspection of each tire for any visible damage, such as punctures, cuts, or bulges, and look for any foreign objects that may be lodged in the tread. If you find that the tire pressures are low or if there are any signs of damage, address these issues accordingly. After adjusting the tire pressures, it may be necessary to reset the tire pressure monitoring system (TPMS); consult your vehicle's manual for specific instructions on how to perform this reset. If the warning light remains illuminated despite these efforts, the problem may lie with a faulty tire pressure sensor, which would require specialized diagnostic tools to identify and replace. Should you still be unable to resolve the issue, it is advisable to visit an authorized Mercedes-Benz service center, where trained professionals can provide a comprehensive diagnosis and repair. By following this structured approach, you can efficiently troubleshoot the tire pressure warning light and ensure the safety and performance of your vehicle.

What could cause the tire pressure warning light to stay on in a 2021 Mercedes-Benz GLC63 AMG S?

When the tire pressure warning light stays on in a 2021 Mercedes-Benz GLC63 AMG S, it often indicates a few common issues that can be addressed through DIY troubleshooting. The first step is to check the tire pressure in all four tires, as low pressure is the most frequent cause of the warning light. Temperature changes or slow leaks can lead to insufficient air, so ensuring that each tire is inflated to the manufacturer's recommended levels is essential. If the tire pressure is adequate, the next area to investigate is the tire pressure sensor itself, which may be faulty and providing inaccurate readings. Additionally, the sensors might require recalibration; if they are not set correctly, they can trigger the warning light even when tire pressure is normal. Lastly, consider the possibility of an electrical fault within the tire pressure monitoring system, which could involve wiring issues or a malfunctioning component. By methodically checking these factors, you can effectively diagnose and potentially resolve the issue of the tire pressure warning light in your GLC63 AMG S.

What immediate actions should be taken if the tire pressure warning light remains on in a 2021 Mercedes-Benz GLC63 AMG S?

When the tire pressure warning light remains illuminated in your 2021 Mercedes-Benz GLC63 AMG S, 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 four tires with a reliable gauge, ensuring they meet the manufacturer's specifications found in your owner's manual or on the door jamb sticker. If you discover any tires are underinflated, inflate them to the correct level, and if they are overinflated, carefully release some air. Additionally, inspect each tire for visible damage, such as punctures or bulges, as these issues can compromise safety and require immediate attention. Once you have adjusted the tire pressures and checked for damage, reset the tire pressure monitoring system according to the instructions in your manual. If the warning light persists despite these efforts, it is essential to consult a qualified mechanic or an authorized Mercedes-Benz service center, as there may be a deeper issue with the monitoring system that needs professional diagnosis. Taking these steps not only ensures your safety but also helps maintain the longevity and performance of your vehicle.

You’ve got options with RepairPal

Whether you need a more accurate auto repair estimate or help finding a reputable shop in your area, we’ve got you covered.

Why 2021 Mercedes-Benz GLC63 AMG S Tire Pressure Light Stays