Lexus LX570 Tire Pressure Warning Light Stays On

Common Causes for the Tire Pressure Warning Light in Your Lexus LX570 and How to Resolve Them

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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 Lexus LX570 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 Lexus LX570 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 of a TPMS control module failure are failing to alert the driver of underinflation or overinflation of one or more tires, failure to communicate with the body control module or TPMS sensors, or erroneously reporting incorrect tire pressure.

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.

Troubleshooting Tire Pressure Warning Light in a Lexus LX570

When dealing with the tire pressure warning light in your Lexus LX570, start by checking the air pressure in all tires, as low pressure is a common trigger for the warning light. Ensure that each tire is inflated to the recommended PSI, which can usually be found on a sticker inside the driver’s door. If the pressure is adequate, inspect the tire pressure monitoring system (TPMS) sensors for any visible damage or signs of wear. If you suspect a sensor issue, consider that the battery in the sensor may be depleted, which is a common problem in older vehicles. If the sensors appear intact, locate the TPMS reset button under the steering wheel and press it until the warning light blinks three times, then release it. After resetting, start your vehicle and allow it to run for about 20 minutes to give the system time to refresh. If the light remains on, it may indicate a malfunctioning TPMS receiver module or a need for a relearn process, which may require specialized tools. In cases where the tire pressure display is not functioning, check for any missing sensors or wiring issues that could be affecting the system. By following these steps, you can effectively diagnose and address the tire pressure warning light issue in your Lexus LX570.

What to Do When the Tire Pressure Warning Light Stays On in a Lexus LX570?

When the tire pressure warning light remains illuminated in your Lexus LX570, it can indicate several underlying problems that may require your attention. One common issue is simply low tire pressure, which can occur due to temperature changes or slow leaks. It's essential to manually check each tire's pressure and inflate them to the recommended levels as specified in your vehicle's manual. If the pressure is adequate but the light persists, the problem may lie with the tire pressure monitoring sensors themselves. These sensors can malfunction or become damaged, leading to inaccurate readings. Additionally, a faulty TPMS reset button can prevent the system from recalibrating after adjustments are made. In some cases, a leak in the tire or valve stem can also trigger the warning light, so a thorough inspection is crucial. By understanding these common problems, you can take the necessary steps to ensure your vehicle's safety and performance.

Why is the Tire Pressure Warning Light Staying On in a Lexus LX570?

When the Tire Pressure Warning Light remains illuminated in your Lexus LX570, it is crucial to address the issue promptly to ensure your safety on the road. Ignoring this warning can lead to serious consequences, such as reduced vehicle handling, increased tire wear, and even tire blowouts, which pose significant risks to both you and other drivers. Start by manually checking the tire pressure with a reliable gauge to confirm that all tires are inflated to the manufacturer's recommended levels. If the pressure is adequate but the light persists, it may indicate a malfunction in the tire pressure monitoring system (TPMS), which could require further investigation. Resetting the TPMS can often resolve the issue; this typically involves holding down the TPMS reset button until the light blinks three times. Additionally, driving the vehicle at a steady speed for a short duration may help reset the system. However, if the light continues to stay on, it is essential to inspect for any tire damage, leaks, or punctures that could compromise your safety. By taking these steps, you not only ensure your vehicle's optimal performance but also safeguard your well-being on the road.

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