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Why is my brake light on in my Lexus?


Seeing the brake warning light illuminate on your Lexus dashboard can be concerning. This light is a critical indicator that something in your braking system requires attention. At Kevin's Autos, with years of experience in car maintenance and repair, we’ve encountered this issue frequently and are here to help you understand the possible causes and solutions.


Common Reasons Your Brake Light Is On


The brake warning light can activate for several reasons, ranging from minor issues to more serious concerns. Here are the most common causes:



  • Low Brake Fluid Levels: Your Lexus relies on hydraulic pressure to operate the brakes. If the brake fluid level is low, it can trigger the warning light. This could be due to a leak or natural wear and tear on the brake pads.

  • Worn Brake Pads: As brake pads wear down, the fluid level in the reservoir drops, which can cause the brake light to turn on. Worn pads also reduce braking efficiency, so it’s essential to address this promptly.

  • Faulty Brake Sensors: Modern vehicles like Lexus models are equipped with sensors to monitor the braking system. A malfunctioning sensor can mistakenly trigger the brake light.

  • Engaged Parking Brake: If the parking brake is even slightly engaged, the brake light will remain on. Double-check to ensure it’s fully released.

  • ABS System Issues: The Anti-lock Braking System (ABS) works in conjunction with your brakes. If there’s a problem with the ABS, it can cause the brake light to illuminate.


Steps to Take When Your Brake Light Comes On


If your brake light is on, follow these steps to ensure your safety and address the issue:



  • Check the Parking Brake: Ensure the parking brake is fully disengaged. Sometimes, even a slight engagement can trigger the light.

  • Inspect Brake Fluid Levels: Open the hood and check the brake fluid reservoir. If the fluid is low, top it off with the recommended type for your Lexus. However, if it’s consistently low, there may be a leak that needs professional attention.

  • Listen for Unusual Noises: Pay attention to any squealing or grinding sounds when braking, as these could indicate worn brake pads.

  • Schedule a Professional Inspection: If the light remains on after checking the basics, it’s time to bring your Lexus to a trusted auto repair shop like Kevin’s Autos. Our experienced technicians can diagnose and resolve the issue efficiently.


Why Prompt Attention Is Crucial


Ignoring a brake warning light can lead to serious safety risks. Your braking system is one of the most critical components of your vehicle, and any compromise can increase the likelihood of accidents. Addressing the issue promptly not only ensures your safety but also prevents more costly repairs down the line.


Visit Kevin’s Autos for Expert Brake Service


At Kevin’s Autos, we specialize in diagnosing and repairing brake issues for all makes and models, including Lexus vehicles. Whether it’s a simple fluid top-off or a more complex repair, our team is here to help. Don’t hesitate to contact us or visit our shop for reliable, professional service you can trust.


Frequently Asked Questions

Why won't my brake light turn off?


Your brake pedal relies on a spring to return to its original position after you've released it. However, the spring can become weaker over time, making the brake feel mushier and causing it to stay engaged. If the brake pedal cannot return to its normal resting point, the brake lights will remain on.



Why is my Lexus brake light on?


It may have detected that your brake system is malfunctioning or your brake fluid level is low. Though it isn't time to panic, this does require immediate attention because it could lead to major problems with your brakes or indicate there is already one occurring.



What is the brake warning on a Lexus?


BRAKE SYSTEM WARNING LIGHT (WARNING BUZZER)*
This light also comes on when the parking brake is not released. If the light turns off after the parking brake is fully released the system is operating normally. Immediately stop the vehicle in a safe place and contact your Lexus dealer.



How to fix a brake light that stays on?


Inspect the Brake Light Switch: Check if the switch is stuck or misaligned. Check the Fuses and Relays: Look in the fuse box for any blown fuses or faulty relays. Examine the Bulbs: Remove and inspect the brake light bulbs. Look for Wiring Issues: Check for any frayed or exposed wires around the brake light assembly.



What is the first thing you should check if your brake dashboard light is on?


If you've just started your car and notice that the brake system warning light is on, don't run the risk of driving the vehicle. First, check to make sure that the parking brake is completely disengaged. Some cars have a common warning light for the brake system and the parking brake.



What would cause the brake light on the dash to come on?


If your brake service warning light is always on, it could be due to a need for parking brake adjustment, worn brake pads, or hydraulic issues. If your brake service warning light turns on when you hit the pedal, it could be due to hydraulic loss on one side of your vehicle or low brake fluid in the master cylinder.



Is it OK to drive with one brake light?


When one of your car's brake lights goes out, your vehicle's shift lock override may turn on. Shift lock override is designed to prevent your car from shifting when mechanical dangers are detected. By driving with a broken brake light, you could run the risk of causing serious damage to your car's transmission system.



Can I still drive my car if my brake light is on?


Again, it is important that you do not continue driving and ignore the brake light, this can cause more damage to the braking system and be very dangerous. *Pro Tip: when you first turn on your vehicle, all the lights on the dashboard should illuminate.



How to fix brake light on dashboard?


How Do You Fix a Brake Light Warning?

  1. Pull Over Safely.
  2. Restart the Vehicle and/or Dashboard.
  3. Replace the Brake Pads.
  4. Check the Brake Fluid.
  5. Check or Replace the Bulbs.
  6. Stop the vehicle and check the Parking Brake.
  7. Take Your Car to an Auto Shop.
  8. Recent Articles.



How do I fix my brake warning light?


How Do You Fix a Brake Light Warning?

  1. Pull Over Safely.
  2. Restart the Vehicle and/or Dashboard.
  3. Replace the Brake Pads.
  4. Check the Brake Fluid.
  5. Check or Replace the Bulbs.
  6. Stop the vehicle and check the Parking Brake.
  7. Take Your Car to an Auto Shop.
  8. Recent Articles.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.