Lexus Tire Pressure Light On But Tires Are Full (With Solutions)

The main purpose of a tire pressure light is to provide a warning when the air pressure is higher or lower than recommended. But sometimes, even when the pressure is completely fine, the light can turn on. This is nothing but a malfunction of the TPMS.

Here is a list of the common reason for Lexus Tire Pressure Light On But Tires Are Full:

1. Damaged sensors
2. TPMS errors
3. Sensor malfunction
4. Sensor battery replacement
5. Sensor calibration
6. Faulty wiring or connections

You’ll get a brief overview of how TPMS works and how you can maintain your Lexus tire pressure light perfectly.

Why is my Lexus Tire Pressure Light On But Tires Are Full?

On Lexus, you may notice that the pressure light is on even if the tire is full, that is due to the bad TPMS sensor.

Sometimes the tire pressure sensor gets damaged. That’s why it can’t send the required data to the module. As a result, the module assumes the wrong data and eventually results in turning the result on.

Often this can result from a wiring problem or error in the TPMS module. But how do you know if the module is showing the wrong result?

Well, to be sure, check the pressure with a gauge. If it’s within the recommended value but the sensor is showing a warning, then it’s nothing but a problem with the TPMS. 

How do you know if you have a bad TPMS sensor?

There are several indications of a bad TPMS sensor. Here I’m mentioning some symptoms that may be caused due to a bad TPMS sensor.

If you see the tire pressure is fine but still the TPMS light is on, then you may assume that the TPMS has some problem within it.

When you start the vehicle, normally after two or three blinking the TPMS light should turn off. If not and it keeps blinking then there may be some error in the TPMS module.

If there is no sign of a warning or TPMS light, the battery may be dead. This is also a very common problem if the TPMS. 

Any anomaly in the behavior or the TPMS generally means that the TPMS is not working properly. Since it’s only dedicated to measuring tire pressure, nothing other should interfere with the TPMS module.

How do you reset the tire pressure light on a Lexus?

To reset the pressure light on the TPMS, all you have to do is to follow any of the following methods. Let’s see them one by one.

• Drive the vehicle:

When you drive the vehicle at a speed of 50 mph or more for 30 to 40 minutes, the TPMS will restart itself. You can see the light blinking and then goes off when the restarting is done.

• Press the reset button:

Another way to TPMS reset is to press the reset button located under the steering wheel. Press it until you hear a horn beeping sound. Do this for each of the tires if needed. When done completely, another beep will be heard and the side light will also flash.

How much does it cost to replace a tire pressure sensor?

The cost of TPMS repair is a prime concern for many people. Many people ask, “Is it expensive to replace TPMS?”

Well, not at all compared to the importance of the module. Generally, it costs about $44 to $150 to replace the pressure sensor. Though, the cost can vary with the service you need and the region you’re living in.

So, always discuss with the mechanic or shop to know the exact cost that is needed to replace or repair the TPMS.

What happens if you don’t replace TPMS?

TPMS is a very important part of the whole automobile. It provides necessary warnings related to tire pressure so that drivers can avoid accidents and any types of unwanted occurrences.

So, it’s really necessary to properly take care of the TPMS module and repair it when required. Otherwise, it can gradually damage the tire as well as affect the vehicle’s performance.

The two situations that can be seen when you don’t replace TPMS is described below with their consequences. 

• Under-inflated tires:

when the pressure is lower than the required amount, the tire gets underinflated. Then the wear rate is increased and so does the probability of accidents.

• Over-inflated tires:

On the other hand, if the tire pressure is higher than the recommended value, it will lower the stability of the vehicle. The braking system won’t work well and you’ll face less control over the vehicle. 

frequently asked questions (FAQs)

Lexus RX350 Tire light fix-WHAT NOT TO DO-Toyota-TPMS-Low Pressure Warning Monitor >> Check out the video below:

Verdict – lexus tire pressure light on

To recap, Here is a list of the common reason for Lexus Tire Pressure Light On But Tires Are Full:

1. Damaged sensors
2. TPMS errors
3. Sensor malfunction
4. Sensor battery replacement
5. Sensor calibration
6. Faulty wiring or connections

Lexus tire pressure can be on even when the pressure is okay. That is due to the faults of the TPMS module. It can be solved by resetting the TPMS.

This part is very important to get accurate data about the pressure inside tires. If this part stops working, the pressure data can’t be read which may result in damage to tires and even accidents. 

So, checking the tire pressure and the TPMS signal regularly is highly recommended. If resetting doesn’t solve the issue, then you may need to repair the TPMS or replace it with a new one.

Rasel

Certification: BSc in Mechanical Engineering

Education: Mechanical  engineer

Lives In: 539 W Commerce St, Dallas, TX 75208, USA

Rasel is an auto mechanic student and writer with over half a decade of experience in the automotive field. He has worked with top automotive brands such as Lexus, Quantum, and also owns two automotive blogs autocarneed.com and taxiwiz.com.