Lexus Check System Light – Explained

Lexus Check System Light – Explained

If you drive a Lexus car, it can be unsettling to see the light illuminate on your dashboard.

In many situations, the light you see on your dashboard may only be indicating a minor issue that needs to be fixed.

For instance, you may notice that the “Check System Light” indicator is ON.

Lexus Check System Light Explanation

If you see the “Check System Light” indicator on your Lexus dashboard, you need to understand that it is a warning light that indicates an issue with tire pressure.

So, you need to check it out.

This guide will explain the meaning behind the ‘Lexus Check System Light’ warning indicator.

About Lexus Dashboard Warning Lights

Is there a particular time you’ve noticed a warning light on your dashboard while driving your Lexus?

Is this something you don’t understand, and you seem worried about it?

There are different types of Lexus models; whether you drive a Lexus GS300, Lexus GS430, or Lexus GS460, there are Lexus dashboard lights you need to familiarize yourself with.

It will help you understand any light indicator that pops up on your dashboard while driving your car.

In many cases, the warning light indicators on your Lexus dashboard warn you of potential issues that might affect your car.

So, let’s look at some of them.

Here are common Lexus Dashboard Warning Lights:

  • Master Warning Light
  • Open Door Warning Light
  • Tire Pressure Warning Light
  • Check Engine Warning Light
  • Brake System Warning Light
  • Low Fuel Level Warning Light
  • Low Engine Oil Pressure Warning Light

We can see several types of warning light indicators that can pop up on your Lexus dashboard.

It is vital to learn how to identify these Lexus dashboard light indicators.

So, a standard Lexus dashboard light indicator is the “Check System Light” indicator that pops up in a Lexus.

Whenever you see this type of warning light, know it is related to Tire Pressure Warning Light.

So, what does it mean? And how can you fix it?

These are questions that a frequently asked.

Lexus Check System Light Indicator

Our focus in this section is on the Lexus Check System Light indicator.

This light indicator is designed to alert the driver of minor issues affecting the tires or the TPMS sensor.

This Lexus dashboard light indicator is related to the Tire Pressure Monitoring System (TPMS).

Hence, we will explain all you need to know about the Lexus Check System Light indicator:

  • The Meaning of Lexus Check System Light Indicator
  • The Causes of Lexus Check System Light Indicator
  • The Solutions to Lexus Check System Light Indicator

Lexus Check System Light – Meaning

When you see a solid light displayed on your dashboard that indicates “Check System Light,” you will know at that moment that there’s an issue with your vehicle’s tire pressure.

This system is designed to check your Lexus car’s tire pressure regularly.

It is to assist drivers that can’t be bothered with the essential maintenance of vehicle components.

Also, it helps with safety, as the system light indicator acts as a warning trigger when there’s an issue.

As a responsible driver or car owner, you are expected to look into the warning indicators.

If the Check System Light in a Lexus comes ON, it means an issue with the TPMS needs to be checked and addressed. You will receive a TPMS sensor message.

The Check System Light indicator appears yellow in some Lexus models, while it appears red in other Lexus models.

The Lexus Check System Light indicator can come ON several times if there’s a problem with the sensor.

So, a TPMS sensor message is displayed on the dashboard to notify drivers of an issue with their tire pressure. It is crucial to address the issue whenever it pops up.

Lexus Check System Light

Lexus Check System Light – Causes

Several factors can cause the Check System Light indicator to show on your Lexus dashboard.

As explained earlier, this is a tire pressure sensor message in most cases.

If you see this warning light indicator, you need to address what might have caused the issue.

Knowing the reason why the indicator comes ON will help you figure out what you can do as an individual to fix the issue.

Many people may assume this indicator is popping up because their tire pressure is low. So, filling up their tires will automatically make the message go away.

While there’s a possibility with that, there are other reasons why this indicator pops up.

Here are some of the leading causes of the Lexus Check System Light indicator:

  • Low tire pressures can cause this issue
  • It could be that the A/B switch got tripped
  • There might be a programming issue with the tire sensors
  • It could be that the TPMS switch got kicked under the glovebox
  • It may be due to an electrical problem in the tire pressure warning system
  • It could be a result of a dead battery in the tire pressure monitoring system

Identifying these causes will help you understand the areas you need to fix.

Also, this will keep you on alert as to what needs to be fixed in your Lexus before potential issues arise.

Lexus Check System Light – Solutions

There are several measures you must carry out to get rid of the Check System Light warning message. They are simple measures that will not cost you money.

You will only need to spend money if you take the car to the dealership. That is if none of these measures work for you.

Here are measures to carry out if you want to fix the Lexus Check System Light indicator:

  • You will need to fill all the tires that are low on air to the required PSI
  • Reset the push button switch above the passenger floorboard marked A/B
  • You would have to remove the tires and have the TPMS batteries checked
  • Reset the tire pressure by holding down the ‘Set’ switch on the driver’s side
  • Press the TPMS switch to reset from 2nd set of tires to the primary set of tires
  • Take your Lexus to a tire shop to give the sensor a scan and possibly replace it

Filling the tires that are low on air might not clear the Lexus Check System Light indicator. So, you will have to reset the Lexus tire pressure sensor.

It is a sure fix to the warning light issue.

The Check System Light warning indicator will not prevent you from driving your Lexus, but it is necessary to take the car to a Lexus dealer as soon as possible if the problem persists.

Taking your car to the dealership might cost you money. So, it would be best if you learned how to fix this yourself.

We believe some solutions provided here are steps you can carry out yourself without a dealer.


Lexus Check System Light is an indicator that warns drivers of issues with their tire pressure.

The low tire pressure warning system in your Lexus is designed to help determine when one or more tires are low on air.

That way, drivers don’t have to manually check their tires before they find out if any of their tires are low on pressure. Addressing this will keep you safe on the road.

We have carefully analyzed the causes of the Lexus Check System Light warning indicator.

Also, we have proffered several practical solutions that will make the light indicator go away.