2015 Buick Regal Tire Pressure Warning Light Stays On

Resolve Tire Pressure Warning Light in 2015 Buick Regal

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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 2015 Buick Regal 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 Buick Regal 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 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 2015 Buick Regal?

To effectively diagnose the tire pressure warning light issue in your 2015 Buick Regal, begin with a straightforward approach that prioritizes simple solutions before delving into more complex diagnostics. Start by checking the tire pressure in all four tires using a reliable tire pressure gauge, ensuring that each tire is inflated to the recommended PSI as indicated in your owner's manual or on the driver's side door jamb sticker. Next, conduct a thorough visual inspection of each tire for any signs of damage, such as punctures or bulges, and look for any foreign objects that may be lodged in the tread. If you find any discrepancies in tire pressure, adjust it accordingly using an air compressor, making sure to fill or deflate the tires to meet the specified levels. After making these adjustments, it’s essential to reset the Tire Pressure Monitoring System (TPMS) to clear the warning light; refer to your owner's manual for the specific reset procedure. Don’t overlook the spare tire, as it can also trigger the warning light if its pressure is low. If the warning light remains illuminated despite these efforts, it may indicate a more serious issue with the TPMS sensors or system, at which point seeking assistance from a certified mechanic or dealership is advisable for further diagnosis and repair. By following this methodical approach, you can efficiently address the tire pressure warning light issue in your vehicle.

What could cause the tire pressure warning light to stay on in a 2015 Buick Regal?

When the tire pressure warning light remains illuminated in a 2015 Buick Regal, it often points to several underlying issues that can be addressed through DIY methods. One of the most frequent culprits is a leaking tire, which can lead to a significant drop in pressure. Regularly inspecting your tires for visible punctures or damage can help identify this problem. Additionally, a wheel that fails to hold air due to corrosion or damage can also trigger the warning light, necessitating a thorough examination of the rims. Another common issue is a malfunctioning tire pressure monitoring system (TPMS), which may require the use of an OBD2 scanner to diagnose and reset the system. If the light is continuously on, it typically indicates that at least one tire is underinflated, so checking and adjusting the tire pressures to the manufacturer's specifications is crucial. In cases where the TPMS light remains on despite proper tire inflation, it may be due to a faulty or unprogrammed tire pressure sensor, which can often be resolved by resetting the TPMS system according to the vehicle's manual. By systematically checking these factors, DIYers can effectively troubleshoot and resolve the tire pressure warning light issue in their Buick Regal.

How urgent is it to address the tire pressure warning light that stays on in a 2015 Buick Regal?

Addressing the tire pressure warning light that remains illuminated in a 2015 Buick Regal is crucial for several reasons. First and foremost, low tire pressure can significantly compromise vehicle safety, affecting handling and braking capabilities, which increases the likelihood of accidents, particularly in challenging driving conditions. Additionally, neglecting this warning can lead to uneven tire wear, resulting in the premature need for tire replacements, which can be costly. Furthermore, underinflated tires can negatively impact fuel efficiency, leading to higher fuel expenses over time. Lastly, driving on tires with insufficient pressure can cause irreversible damage, potentially culminating in a blowout while on the road. Therefore, it is imperative to check and adjust tire pressure according to the manufacturer's specifications as soon as the warning light activates, ensuring both your safety and the longevity of your vehicle.

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