2019 Lexus ES350 Tire Pressure Warning Light Stays On

Resolve Tire Pressure Warning Light in 2019 Lexus ES350

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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 2019 Lexus ES350 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 2019 Lexus ES350 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 2019 Lexus ES350?

When faced with a tire pressure warning light that remains illuminated in your 2019 Lexus ES350, it's essential to adopt a systematic diagnostic approach. Begin by checking the tire pressure in all four tires, including the spare, ensuring they align with the manufacturer's recommended levels found on the door jamb or in the owner's manual. Next, inspect each tire for any visible damage such as punctures or bulges, as these can lead to pressure loss and trigger the warning light. If the tire pressures are correct and the tires appear undamaged, consider resetting the tire pressure monitoring system (TPMS) to eliminate any false alerts; consult your vehicle's manual for specific reset instructions. If the warning persists, it may indicate a malfunctioning tire pressure sensor, which would require professional diagnosis and potential replacement. Additionally, keep in mind that environmental factors, particularly temperature fluctuations, can impact tire pressure, so always account for these changes when assessing your tires. By following this methodical approach, you can effectively diagnose and address the tire pressure warning light issue in your Lexus ES350.

What could be causing the tire pressure warning light to stay on in a 2019 Lexus ES350?

When the tire pressure warning light remains illuminated in a 2019 Lexus ES350, it can be attributed to several common problems that DIYers can investigate. The most frequent culprit is low tire pressure, which can easily be checked using a tire pressure gauge. Ensuring that all tires are inflated to the manufacturer's recommended levels is crucial for both safety and performance. If the tire pressure is adequate, the issue may lie with a faulty tire pressure sensor, which could require replacement if it fails to provide accurate readings. Additionally, sensor calibration issues can arise, necessitating a recalibration process to ensure the sensors are functioning correctly. Electrical faults within the tire pressure monitoring system can also trigger the warning light, and these may require a diagnostic tool to pinpoint the exact problem. Lastly, environmental factors such as extreme temperatures or rough driving conditions can temporarily affect tire pressure readings, so it's wise to check and adjust tire pressure accordingly. If these troubleshooting steps do not resolve the issue, seeking assistance from a certified mechanic or dealership is recommended for a comprehensive diagnosis.

How urgent is it to address the tire pressure warning light that stays on in a 2019 Lexus ES350?

Addressing the tire pressure warning light in your 2019 Lexus ES350 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 improperly inflated tires can lead to uneven wear, significantly shortening their lifespan and raising the risk of a blowout while on the road. Additionally, underinflated tires can negatively impact your fuel efficiency, leading to higher fuel costs over time. Ignoring the warning light may also indicate a malfunction in the Tire Pressure Monitoring System (TPMS), which could require professional repair to ensure accurate monitoring in the future. Therefore, it is crucial to check and adjust your tire pressure according to the manufacturer's specifications or consult a qualified mechanic to address any underlying issues promptly. Taking these steps not only enhances your safety but also protects your vehicle and wallet in the long run.

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