2023 Lexus RC350 Tire Pressure Warning Light Stays On

Resolve Tire Pressure Warning Light in 2023 Lexus RC350: Causes and Solutions

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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 2023 Lexus RC350 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 2023 Lexus RC350 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 on my 2023 Lexus RC350?

When diagnosing the tire pressure warning light issue on your 2023 Lexus RC350, it's essential to adopt a systematic approach that prioritizes simpler solutions before delving into more complex diagnostics. Begin by checking the tire pressure in all four tires using a reliable tire pressure gauge, ensuring they are inflated to the levels recommended in your vehicle's manual. This initial step can often resolve the warning light if the tires are under-inflated. Next, inspect each tire for visible damage, such as punctures or bulges, and look for any foreign objects that may be causing a leak. If the tires appear to be in good condition and properly inflated, consider resetting the tire pressure monitoring system as outlined in your vehicle's manual, as this can sometimes clear false warnings. However, if the warning light remains illuminated after these checks, it may indicate a more serious issue with the tire pressure monitoring system itself, necessitating a visit to a qualified mechanic or dealership for further diagnosis and repair. By following this structured approach, you can effectively address the tire pressure warning light issue and maintain your vehicle's safety and performance.

What could be causing the tire pressure warning light to stay on in a 2023 Lexus RC350?

When the tire pressure warning light stays on in your 2023 Lexus RC350, it’s essential to identify the underlying issues to ensure your vehicle's safety and performance. The most frequent cause is low tire pressure, which can result from natural air loss or punctures; therefore, regularly checking and inflating your tires to the recommended levels is vital. Another possibility is a faulty tire pressure sensor, which may need replacement if it’s malfunctioning. Additionally, if the vehicle has recently undergone maintenance or experienced significant changes in tire pressure, recalibrating the sensors could be necessary for accurate readings. Environmental factors, such as extreme temperatures or rough terrain, can also trigger the warning light, so adjusting tire pressure accordingly is advisable. Lastly, an electrical fault within the tire pressure monitoring system may require a diagnostic check to identify and fix the issue. By addressing these common problems promptly, you can maintain your vehicle's safety and efficiency. If the warning light continues to illuminate despite your efforts, consulting a professional mechanic or your dealership is recommended for further assistance.

What should I do if the tire pressure warning light on my 2023 Lexus RC350 stays on?

When the tire pressure warning light on your 2023 Lexus RC350 remains illuminated, it is crucial to act swiftly to avoid potential safety hazards and costly repairs. Ignoring this warning can lead to decreased vehicle performance, increased tire wear, and even tire blowouts, which pose serious risks while driving. Start by checking the tire pressure of all four tires with a reliable gauge, ensuring they meet the manufacturer's recommended levels. If you find any tires underinflated, inflate them accordingly to restore proper pressure. Additionally, inspect each tire for visible damage, such as punctures or bulges, as these can contribute to pressure loss and trigger the warning light. After making necessary adjustments, you may need to reset the tire pressure monitoring system, which can typically be done through your vehicle's settings. If the warning light persists despite these efforts, it is essential to consult a certified mechanic or visit a Lexus service center for a comprehensive inspection. Taking these steps not only enhances your safety on the road but also helps maintain the longevity of your vehicle's tires.

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