2020 Hyundai Sonata Tire Pressure Warning Light Stays On

Resolve Tire Pressure Warning Light in 2020 Hyundai Sonata: Causes and Solutions

Find Repair Location
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 2020 Hyundai Sonata 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 2020 Hyundai Sonata 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 are the initial steps to diagnose a tire pressure warning light that stays on in a 2020 Hyundai Sonata?

When faced with a tire pressure warning light that remains illuminated in your 2020 Hyundai Sonata, it's essential to adopt a systematic diagnostic approach. Begin by manually checking the tire pressure in all four tires, ensuring they are inflated to the manufacturer's recommended PSI levels. This simple step can often resolve the issue if the tires are under-inflated. Next, inspect each tire for visible damage, such as punctures or bulges, which could indicate a leak. If the tires appear to be in good condition, attempt to reset the tire pressure monitoring system, as this can clear any false alerts. Additionally, driving the vehicle for a short distance may help recalibrate the system and turn off the warning light if the problem was temporary. If these steps do not resolve the issue, it may be time to consult a mechanic for a more thorough diagnosis. By following this methodical approach, you can effectively troubleshoot the tire pressure warning light and ensure your vehicle remains safe and roadworthy.

What could cause the tire pressure warning light to remain on in a 2020 Hyundai Sonata?

When the tire pressure warning light remains on in your 2020 Hyundai Sonata, it can be frustrating, but understanding the common problems can help you diagnose the issue. One of the primary culprits is low tire pressure, which is easily checked with a tire pressure gauge. Ensure all tires are inflated to the manufacturer's recommended levels, as even a slight drop can trigger the warning light. If the pressure is adequate, consider the possibility of a faulty tire pressure sensor; these sensors can wear out over time and may need replacement. Additionally, sensor calibration issues can arise, especially if tires have been rotated or replaced, necessitating a recalibration to ensure accurate readings. Electrical problems, such as damaged wiring or blown fuses, can also cause the light to stay on, so a thorough inspection of the vehicle's electrical system is advisable. Lastly, if the tire pressure monitoring system itself is malfunctioning, it may require specialized diagnostic tools to identify and repair the issue. By systematically checking these potential problems, you can often resolve the warning light issue without needing professional assistance.

How urgent is it to address the tire pressure warning light that stays on in a 2020 Hyundai Sonata?

Addressing the tire pressure warning light in your 2020 Hyundai Sonata is not just a matter of convenience; it is a critical safety concern that requires immediate attention. When this warning light remains illuminated, it signals that your tires may be underinflated, which can severely compromise your vehicle's handling and braking capabilities. This increases the likelihood of accidents, particularly in emergency situations where quick response is essential. Furthermore, driving on underinflated tires accelerates uneven wear, leading to premature tire replacement, which can be a costly endeavor. Additionally, low tire pressure negatively impacts fuel efficiency, resulting in higher fuel costs over time. The risk of tire damage, including potential blowouts, is another serious consequence of ignoring this warning. Therefore, it is crucial to check your tire pressure, inflate your tires to the recommended levels, and inspect for any leaks or punctures as soon as the warning light stays on. If the light persists despite these measures, seeking professional assistance is advisable to ensure your vehicle remains safe and reliable on the road.

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.