Acura Brake Lights Stay On: Common Causes And Solutions

2004 Acura MDX Brake Lights Stuck On YouTube
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Having your Acura brake lights stay on even when you’re not pressing the brake pedal can be frustrating and potentially dangerous. Not only can it drain your battery, but it can also confuse other drivers on the road. In this article, we will explore the common causes behind this issue and provide you with some possible solutions to resolve it.

1. Faulty Brake Light Switch

One of the most common reasons why your Acura brake lights stay on is a faulty brake light switch. This switch is located near the top of the brake pedal and is responsible for turning the brake lights on and off when you press and release the pedal. If the switch gets stuck or malfunctions, it can cause the brake lights to remain illuminated.

2. Misadjusted Brake Light Switch

In some cases, the brake light switch may not be faulty but simply misadjusted. This can happen if the switch is not properly aligned with the brake pedal. A misadjusted switch may not fully release when you release the pedal, causing the brake lights to stay on.

3. Brake Pedal Position Sensor Issue

Another possible cause of your Acura brake lights staying on is a problem with the brake pedal position sensor. This sensor is responsible for detecting the position of the brake pedal and sending signals to the brake light switch. If the sensor is malfunctioning or damaged, it may send incorrect signals, causing the brake lights to stay illuminated.

4. Wiring or Electrical Problems

Wiring or electrical issues can also lead to brake lights staying on. A short circuit or damaged wiring can cause a constant flow of electricity to the brake lights, keeping them illuminated even when the brake pedal is not pressed. Inspecting the wiring and connections for any signs of damage or corrosion is essential in identifying and resolving this issue.

5. Brake Fluid Level and Pressure

Low brake fluid level or improper pressure can trigger the brake warning light, which may cause the brake lights to stay on. Insufficient brake fluid can indicate a leak or a problem with the braking system, which needs immediate attention to ensure safe driving conditions.

6. Brake Light Bulb Issues

Although less common, a defective or incorrectly installed brake light bulb can also cause the lights to stay on. Check for any burnt-out bulbs or bulbs that are not securely fitted in their sockets. Replacing or properly installing the bulbs can often resolve this issue.


Experiencing Acura brake lights that stay on can be a frustrating and potentially hazardous situation. By understanding the common causes behind this issue, such as a faulty brake light switch, misadjusted switch, brake pedal position sensor problems, wiring or electrical issues, low brake fluid level, or brake light bulb issues, you can take the necessary steps to resolve it. It is always recommended to consult a professional mechanic if you are unsure about diagnosing or fixing the problem yourself. Remember, ensuring the proper functioning of your brake lights is crucial for your safety and that of others on the road.