2015 Lexus LS460 Tire Pressure Warning Light Stays On

Resolve Tire Pressure Warning Light in 2015 Lexus LS460

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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 2015 Lexus LS460 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 Lexus LS460 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 Lexus LS460?

To effectively diagnose the tire pressure warning light issue in your 2015 Lexus LS460, begin with a systematic approach that prioritizes simpler 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 levels recommended in your vehicle's manual. This initial step is crucial, as incorrect tire pressure is a common cause of warning lights. Next, inspect the tires for any visible damage, such as punctures or bulges, which could indicate a leak or other issues. If the tires appear to be in good condition, proceed to reset the tire pressure monitoring system, as this can often clear false alerts. Additionally, examine the valve stems for any signs of damage or leaks that might be contributing to the problem. If, after completing these steps, the warning light remains illuminated, it may be time to consult a mechanic or dealership for a more comprehensive diagnosis. By following this structured approach, you can efficiently identify and address the cause of the tire pressure warning light, ensuring your vehicle's safety and performance.

What could be causing the tire pressure warning light to stay on in a 2015 Lexus LS460?

When the tire pressure warning light stays on in a 2015 Lexus LS460, it can signal several underlying issues that DIY enthusiasts can investigate. The most common reason is low tire pressure, so the first step is to check and inflate all tires to the recommended levels. If the pressure is adequate, the next possibility is a faulty tire pressure sensor, which may need replacement. Additionally, sensor calibration issues can occur, requiring a recalibration to ensure accurate readings. Electrical faults within the tire pressure monitoring system can also cause the warning light to remain illuminated, and diagnosing these may involve more advanced troubleshooting techniques. Lastly, interference from electronic devices or physical obstructions near the sensors can disrupt their functionality. By methodically addressing these potential causes, you can effectively troubleshoot the tire pressure warning light and maintain your vehicle's safety. If these DIY efforts do not resolve the issue, seeking assistance from a qualified mechanic is recommended for a comprehensive inspection.

How urgent is it to address the tire pressure warning light on a 2015 Lexus LS460 that stays on?

Addressing the tire pressure warning light on a 2015 Lexus LS460 is an urgent matter that should not be overlooked. Ignoring this warning can lead to serious safety concerns, as low tire pressure significantly impacts vehicle handling and braking, increasing the likelihood of accidents, particularly in critical driving situations. Additionally, driving on underinflated tires accelerates uneven wear, which can necessitate costly premature tire replacements. Furthermore, low tire pressure can adversely affect fuel efficiency, leading to higher fuel costs over time. The risk of tire damage also escalates with continued driving on underinflated tires, potentially resulting in dangerous blowouts. Therefore, it is crucial to promptly check and adjust the tire pressure according to the manufacturer's specifications or consult a professional if necessary, ensuring both safety and vehicle longevity.

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2015 Lexus LS460 Tire Pressure Warning Light Solutions