2017 Mercedes-Benz GLA45 AMG Tire Pressure Warning Light Stays On

Resolve Tire Pressure Warning Light in 2017 Mercedes-Benz GLA45 AMG

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Reviewed by
Bo Fader
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 2017 Mercedes-Benz GLA45 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 2017 Mercedes-Benz GLA45 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 2017 Mercedes-Benz GLA45 AMG?

To effectively diagnose the tire pressure warning light issue in your 2017 Mercedes-Benz GLA45 AMG, begin with a straightforward approach that prioritizes simpler solutions before delving into more complex diagnostics. Start by manually checking the tire pressure in all four tires using a reliable tire pressure gauge, ensuring that the readings align with the recommended levels found in your vehicle's manual. Next, conduct a thorough visual inspection of each tire for any signs of damage, such as punctures, cuts, or bulges, and look for any foreign objects that may be lodged in the tread. If the tire pressure appears correct and no visible damage is found, the next step is to reset the tire pressure monitoring system (TPMS), as it may require recalibration. Refer to your vehicle's manual for specific instructions on how to perform this reset. If the warning light remains illuminated after these steps, it is advisable to consult a certified mechanic or dealership for a comprehensive diagnosis and potential repairs, ensuring your vehicle's safety and performance on the road. By following this methodical approach, you can efficiently address the tire pressure warning light issue and maintain your vehicle's optimal condition.

What could be causing the tire pressure warning light to remain on in a 2017 Mercedes-Benz GLA45 AMG?

When the tire pressure warning light stays on in a 2017 Mercedes-Benz GLA45 AMG, it can indicate several underlying issues that DIY enthusiasts can troubleshoot. Start by checking the tire pressure in all four tires, as low pressure is the most common reason for the warning light to remain illuminated. If the tire pressure is within the recommended range, the next step is to inspect the tire pressure sensors; a faulty sensor may need to be replaced or recalibrated. Additionally, consider the possibility of low or depleted batteries in the sensors, which can lead to incorrect readings. It's also important to examine the wiring and connections related to the tire pressure monitoring system, as any faults in these areas can trigger the warning light. If everything appears to be functioning correctly, the system may require recalibration, which can often be done with the appropriate tools or by seeking assistance from a professional. Addressing these potential issues promptly is essential for maintaining the safety and performance of your vehicle.

How urgent is it to address the tire pressure warning light on a 2017 Mercedes-Benz GLA45 AMG?

Addressing the tire pressure warning light on your 2017 Mercedes-Benz GLA45 AMG is not just a matter of convenience; it is a critical safety concern that demands immediate attention. Ignoring this warning can lead to compromised vehicle handling and stability, particularly in emergency situations or challenging driving conditions. Furthermore, driving on improperly inflated tires can accelerate uneven wear, significantly shortening their lifespan and increasing the risk of a blowout. This not only endangers your safety but can also lead to costly repairs. Additionally, maintaining the correct tire pressure is essential for optimal fuel efficiency; neglecting this can result in higher fuel consumption, impacting your wallet over time. Ultimately, ensuring that your tires are properly inflated is vital for preserving the overall performance and handling of your vehicle, making it imperative to act swiftly when the tire pressure warning light illuminates.

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