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Anti-lock brakes offer significant improvements over older brake systems. They provide greater safety, particularly in difficult driving conditions. While there are numerous systems on the market, the type used on your car will vary depending on the make and model. Essentially, a braking computer (called the anti-lock brake control module) monitors driving conditions. When you press the brake pedal, it activates the anti-lock brake switch (also called the brake light switch). It is also responsible for allowing the car to shift out of park. This takes the system out of standby mode and puts it into active mode. It will now monitor the speed of each wheel and if one wheel is noticeably faster than the others, the system will automatically pulse the brakes on that wheel only to bring its speed back in line with the others.
The anti-lock brake switch is located behind the brake pedal, generally close to the top of the mounting arm. When you press the pedal, the switch activates. When you take your foot off the pedal, it deactivates. Not only does it tell the car’s brake system controller that the brakes are being operated, but it controls the signal to the brake lights. If the switch fails and the brake lights do not turn on, the transmission will not shift out of park.
Without an operational anti-lock switch, not only will your car not come out of park (without the bypass being used), but the anti-lock brake system will not engage. While your brakes will operate normally, this isn’t a safe driving condition. Have any brake problems immediately addressed by one of our expert mechanics.
The anti-lock switch is important for proper braking operation in all road conditions. If it doesn’t function properly, you may not be able to stop in time to avoid an accident. Having a functional anti-lock switch/brake light switch is essential, not only because it controls the ABS system, but because it controls your brake lights. We recommend immediate diagnosis and repair by one of our expert mechanics if you’ve noticed any unusual operation with your brake system.