Electronic Parking Brake
The handbrake, or parking brake, traditionally operated via a mechanical lever next to the driver’s seat, has long been one of the essential components in vehicles. Some models also used a foot-operated parking brake, although such systems were less common. One of the major issues with traditional mechanical handbrakes was wear and decreased performance over time. Fortunately, modern electronic parking brake systems are designed not only to perform more efficiently but also to experience less wear. In this article, we will examine these advanced systems and their advantages over mechanical handbrakes. So if you want to learn more about electronic parking brakes and how they work, keep reading.
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What Is an Electronic Parking Brake and How Does It Work?
In traditional mechanical handbrake systems, the brake lever was connected to the rear brake pads via a cable. By pulling the lever, the driver could engage the rear wheels with the brake pads to keep the vehicle stationary.
In contrast, the Electronic Parking Brake (EPB) system controls this process entirely electronically. In this system, the ECU (Electronic Control Unit) is responsible for activating the brake and engaging the pads. This is done through two separate electric motors mounted on the rear wheels. Each motor activates its respective brake based on commands from the ECU.
The electronic parking brake is typically operated using a button on the center console. To engage the brake, the driver simply pulls the button upward. When engaged, the corresponding warning light appears on the dashboard or infotainment screen. To disengage the brake, the driver presses the brake pedal and pushes the button downward.
A very useful feature of the EPB system is its automatic release function. If the driver forgets to deactivate the parking brake, the system will automatically release it when the engine starts and the accelerator pedal is pressed—helping to prevent damage to the braking system.
Advantages of Electronic Parking Brake Over Mechanical Handbrake
One common issue with mechanical handbrakes is that the driver might forget to release the brake, causing the vehicle to move while extra pressure is applied to the rear braking system. This situation can lead to serious damage to components such as the discs, drums, and brake pads. With an electronic parking brake, this problem is easily resolved, as the system operates automatically and electronically. Even if the driver forgets to deactivate it, the system intelligently disengages the brake to prevent component damage.
In newer systems, the electronic parking brake not only improves efficiency and vehicle safety, but also enhances driver convenience. Especially in vehicles with limited cabin or console space, replacing bulky levers with compact push-buttons reduces clutter and improves the overall interior design aesthetics.
First Car with Electronic Parking Brake
The first car to feature an Electronic Parking Brake (EPB) was the Audi A8. This innovative technology was introduced in 2009 by the renowned German automaker Audi, and soon after, all of the company’s models were equipped with this advanced feature. Over time, other manufacturers also recognized the benefits of EPB, and gradually, it replaced traditional mechanical systems in many modern vehicles. Today, this technology is standard in numerous new cars worldwide.
In the Iranian market, several modern models now come equipped with EPB, including the Bahman Respect, Dignity Prestige, Chery Tiggo 7, Fownix Tiggo 8 Pro, Fownix Tiggo 7 Pro, Arrizo 6 Pro, and many more.
Advantages of Electronic Parking Brake Over Mechanical Models
Compared to mechanical versions, the electronic parking brake offers longer lifespan and better performance. Its key advantages include less wear and tear and fewer maintenance issues. In vehicles with mechanical handbrakes, many drivers—especially women—may find it difficult to release the lever. The EPB solves this issue completely; with just a simple press of a button, the parking brake can be activated or deactivated effortlessly.
Another standout feature of EPB is its automatic release function. As soon as the engine starts and the gas pedal is pressed, the ECU automatically disengages the parking brake. This helps prevent damage to the braking system and avoids issues that may arise from forgetting to release the mechanical handbrake.
Summary of Electronic Parking Brake (EPB) Benefits:
- Easy activation via a push-button
- Automatic and intelligent deactivation by the ECU to prevent damage to the braking system
- Longer lifespan and lower wear compared to mechanical models, reducing maintenance costs
These features clearly show that the electronic parking brake not only enhances driving comfort but also plays a key role in extending brake system life and reducing maintenance expenses.
Conclusion
As an advanced technology, the Electronic Parking Brake (EPB) has become a standard and practical feature in modern vehicles. Now commonly found in both mid-range and luxury models, it not only boosts driving convenience, but also offers efficient performance with fewer maintenance needs—making it a popular choice in the global automotive industry.
One of the additional standout features in EPB-equipped cars is the Auto Hold system, which greatly improves the driving experience in traffic. This system automatically activates the parking brake when the vehicle comes to a stop, preventing unwanted movement. Then, as soon as the driver releases the brake pedal and intends to move, the system automatically deactivates the brake.
This function allows the driver to continue driving in traffic with ease, without the need to repeatedly engage or release the handbrake.
Ease of use, low maintenance, and enhanced safety are among the key advantages that have made the electronic parking brake a standard feature in modern vehicles. These benefits not only assist the driver but also help reduce risks caused by human error and stress on traditional mechanical systems.