Brake Locked Car Won’t Start | Different Reasons & Solutions

If you find yourself in the unfortunate situation of having a brake-locked car that won‘t start, you may be feeling a bit frustrated and confused.

There are a number of reasons that can result in the locked brakes of a car. In this article I will discuss brake locked car won’t start also we will are going into those reasons as well as different solutions. So, keep reading!

Also, read our latest blog post about Hyundai Blue Link Not Working

Reasons Why Car Breaks Get Locked

Braked locked car won’t start and that is a serious issue. Here are some of the most common reasons that you should look for.

Exhausted Vacuum

Brake Locked Car Won't Start

One of the most common reasons for brake lock-up is an exhausted vacuum. Vacuum is an essential component in the functioning of brakes, and when it is not running properly, the brakes can lock up and cause a lot of hassle.

The vacuum system in the car is responsible for providing the necessary pressure to the brakes that help them work. It is made up of two different parts which are the intake manifold and the vacuum pump.

The intake manifold is responsible for providing a vacuum to the entire system, while the vacuum pump helps to regulate the pressure in the brakes.

When the vacuum system is exhausted, it will cause the brakes to lock up. This is usually because the intake manifold is not providing enough vacuum or the vacuum pump is not working properly. This can be caused by a number of different issues such as a leak in the system, a faulty vacuum pump, or a faulty intake manifold.


In order to prevent brake lock-up due to an exhausted vacuum, it is important to regularly check the vacuum system and make sure that it is working properly. If any issues are found, it is important to have them repaired as soon as possible. This will ensure that the brakes will not lock up due to an exhausted vacuum.

Faulty Battery

Brake Locked Car Won't Start

A faulty battery can also be a reason brake lock. It might sound like an odd connection, but a dead or dying battery can actually be the reason your car brakes are stuck in the “on” position.

The reason for this is that the car’s brake system requires a certain amount of voltage from the battery in order to function properly. If the battery is not providing the necessary voltage, it can cause the brakes to lock.

This is because the brake actuator, which is part of the brake system that activates the brakes, relies on the battery’s power to operate.


To determine if a faulty battery is causing your car brakes to stay locked, you can try to start the car and see if it starts right away. If it doesn’t start, or if it takes a few attempts, then it’s likely that the battery is not providing enough power to the brake system.

Once you’ve determined that the battery is the cause of the problem, it’s time to replace it. If you’re not sure how to do this, it’s best to take your car to a professional mechanic who can safely and properly replace the battery.

Brake Drag

Brake Locked Car Won't Start

Brake drag can also be a reason for car brake lock. Brake drag can be caused by a variety of mechanical issues. The most common issue is the buildup of rust and corrosion on the brake pads and rotors. This buildup can cause the brakes to remain engaged, even when the brake pedal is released.

Another issue is a worn or damaged brake caliper, which can cause the brakes to remain engaged when the pedal is released.


If brake drag does occur, it is important to have the brakes inspected by a qualified mechanic to determine the cause. In some cases, the issue can be fixed by simply replacing the brake pads or cleaning the rotors. However, if the brakes are severely damaged, they may need to be replaced.

Ignition Switch

Brake Locked Car Won't Start

A faulty ignition switch can be the cause of a car brake lock, otherwise known as a brake lockup.  The ignition switch is responsible for providing power to the brake system. When the switch is faulty, it can cause the brake system to malfunction.

The malfunction can cause the brakes to become stuck and unable to be released, resulting in a brake lockup. A faulty ignition switch can also cause the brakes to become over-sensitive and apply too much pressure, resulting in the brakes becoming stuck.


In order to prevent ignition switch failure, it is important to have the ignition switch checked and replaced if necessary. If the switch is found to be faulty, the mechanic will replace the part and make sure the brake system is functioning properly.

Blown Fuses

Brake Locked Car Won't Start

Blown fuses in a car’s electrical system can cause a number of problems, from a faulty headlight to a dead battery. One issue that is often overlooked is a brake lock. When a fuse in the brake system blows, the brakes may lock up, making it very difficult to drive the car.

The brake lock occurs when the brakes are unable to disengage. This can cause the car to be stuck in a single gear and unable to move, as the brakes are constantly engaged.

The cause of a brake lock is usually a blown fuse in the brake system. The fuse protects the brakes from an overload of electricity, and when it blows, the brakes can become stuck.


Check the fuse box to see if any fuses have blown. If there are any blown fuses, they should be replaced immediately.

It is also important to check the brake system for any other signs of damage or wear. If there is any damage or wear, it should be fixed before the fuse is replaced.

Frequently Asked Questions

How can I tell if my car is brake locked?

If your car won’t start, it’s a good indication that the brake is locked. You can also check the brake light on the dash. If it’s illuminated, that means the brake is engaged.

What should I do if the brake switch is fine and the brake pads are new?

If the brake switch is fine and the brake pads are new, then you may have a problem with the ignition switch. Check the wiring and make sure it’s connected properly. If it’s not, replace the switch.

Final Words

If your car is brake locked and won’t start, don’t panic. With a few simple troubleshooting steps, you can get your car running again. Start by checking the brake switch and brake pads. If they’re fine, move on to the ignition switch and starter motor. If all else fails, it’s time to visit a mechanic for help.

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