2015 Mercedes-Benz GLA250 Tire Pressure Warning Light Stays On

Resolve Tire Pressure Warning Light in 2015 Mercedes-Benz GLA250

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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 2015 Mercedes-Benz GLA250 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 2015 Mercedes-Benz GLA250 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 on my 2015 Mercedes-Benz GLA250?

To effectively diagnose the tire pressure warning light issue on your 2015 Mercedes-Benz GLA250, begin with the simplest solutions before moving on to more complex diagnostics. Start by checking the tire pressure in all four tires using a reliable tire pressure gauge, ensuring they are inflated to the recommended levels specified in your owner's manual or on the sticker located inside the driver's door jamb. If the tire pressure is correct, visually inspect each tire for any signs of damage, such as punctures or bulges, which could indicate a loss of pressure. If everything appears normal, the next step is to reset the tire pressure monitoring system (TPMS), as it may require recalibration after adjustments. If the warning light remains illuminated, it could signal a malfunctioning tire pressure sensor, which would necessitate a diagnostic tool to pinpoint the issue. Should a faulty sensor be identified, consult a mechanic for advice on replacement options. By following this structured approach, you can efficiently troubleshoot and resolve the tire pressure warning light concern.

What could be causing the tire pressure warning light to stay on in a 2015 Mercedes-Benz GLA250?

When the tire pressure warning light stays on in a 2015 Mercedes-Benz GLA250, 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. If the pressure is within the recommended range, the issue may stem from a faulty tire pressure sensor, which could require replacement. Additionally, the sensors may need recalibration to ensure accurate readings, a process that can often be handled by a professional. Electrical faults within the tire pressure monitoring system can also cause the light to remain on, necessitating a more in-depth diagnostic approach. In some cases, performing a system reset can clear the warning light if all other factors are in check. If the light continues to persist after these checks, it is wise to consult a certified mechanic for a comprehensive evaluation to pinpoint and resolve the issue effectively.

What immediate steps should be taken if the tire pressure warning light remains on in a 2015 Mercedes-Benz GLA250?

When the tire pressure warning light remains illuminated in your 2015 Mercedes-Benz GLA250, it is crucial to act promptly to avoid potential safety hazards and costly repairs. Ignoring this warning can lead to decreased vehicle handling, 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 immediately. Additionally, visually inspect each tire for signs of damage, such as punctures or bulges, as these issues can exacerbate the problem. Once you have adjusted the tire pressure and addressed any visible damage, reset the tire pressure monitoring system according to the instructions in your owner's manual. If the warning light persists despite these efforts, it is essential to consult a qualified mechanic, as there may be a deeper issue with the monitoring system that requires professional attention. Taking these steps not only enhances your vehicle's performance but also ensures your safety and that of others on the road.

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