2021 Mercedes-Benz C63 AMG Tire Pressure Warning Light Stays On

Resolve Tire Pressure Warning Light in 2021 Mercedes-Benz C63 AMG

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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 C63 AMG 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 C63 AMG 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 C63 AMG?

To effectively diagnose the tire pressure warning light issue in your 2021 Mercedes-Benz C63 AMG, begin with a thorough check of 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 the owner's manual or on a sticker located inside the driver's door jamb. Next, inspect each tire for any visible signs of damage, such as punctures, cuts, or bulges, as these can lead to pressure loss and trigger the warning light. If the tire pressure is correct and no damage is evident, consider resetting the tire pressure monitoring system (TPMS) according to the instructions in your vehicle's manual, as sometimes the system may require a reset to function properly. If the warning light persists despite these checks, it may indicate a malfunction in the tire pressure monitoring sensors, which would necessitate a visit to a professional mechanic for further diagnosis. By following this systematic approach, you can efficiently identify and address the underlying cause of the tire pressure warning light in your vehicle.

What could cause the tire pressure warning light to stay on in a 2021 Mercedes-Benz C63 AMG?

When the tire pressure warning light stays on in a 2021 Mercedes-Benz C63 AMG, it can signal several common issues that DIY enthusiasts can troubleshoot. Start by checking the tire pressure in all four tires, as low pressure is often the primary cause of the warning light. If you find any tires under-inflated, inflating them to the recommended levels can usually resolve the problem. Next, inspect the tires for any visible damage, such as punctures or leaks, which may require repair or replacement. If the tire pressure is adequate and there are no visible issues, consider the possibility of a faulty tire pressure sensor or a calibration issue; resetting or recalibrating the sensors according to the manufacturer's instructions may help. If the warning light remains illuminated after these steps, it could indicate an electrical fault within the tire pressure monitoring system, necessitating professional diagnosis. By methodically addressing these potential causes, you can effectively troubleshoot the tire pressure warning light in your vehicle.

What immediate steps should be taken if the tire pressure warning light remains on in a 2021 Mercedes-Benz C63 AMG?

When the tire pressure warning light remains illuminated in your 2021 Mercedes-Benz C63 AMG, 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. If you find any tires are underinflated, inflate them to the correct levels using a dependable air compressor. Additionally, visually inspect each tire for any signs of damage, such as punctures or bulges, as these issues can exacerbate the problem. 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 ensures your safety but also helps maintain the integrity of your vehicle, preventing further complications down the line.

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