What Is Controlled Braking – Note that there are different brake system configurations as some vehicles use disc brakes on all four wheels while others use front and drum brakes at the rear. This graphic shows the brake system components on a car/truck equipped with an anti-lock braking system.
One of the most important systems in your vehicle, you rely on your brakes to bring your vehicle to safety every time you step on the brake pedal. To get a better idea of everything related to stopping your vehicle, check out this diagram showing the main parts of a common brake system in a passenger car.
What Is Controlled Braking
Found in vehicles equipped with ABS brakes, the module performs diagnostic tests on the ABS braking system and determines when to send the correct pressure to each tire to prevent the wheels from locking.
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Each driver reduces the amount of pressure required to apply the brakes. It uses engine vacuum and pressure to increase brake pedal force on the master cylinder.
Commonly found on the front wheels, disc brakes include brake pedals that compress the disc (rotor) when the brake pedal is depressed to stop the vehicle. The products are attached to a brake caliper assembly that includes a rotor frame.
Drum brakes located at the rear of the vehicle include wheel cylinders, brake shoes and a brake drum. When the brake pedal is depressed, the brake shoes travel through the wheel cylinders into the brake drum, stopping the vehicle.
It operates independently of the main brake system, preventing the vehicle from rolling. An emergency brake, also known as a parking brake, handbrake, and electronic brake, is primarily used to hold a vehicle stationary.
Antilock Braking System (abs) And Vehicle Stability Control (vsc)
Converts non-hydraulic pressure into hydraulic pressure, which the wheel cylinders use to press the brake pads against the rotors to stop the vehicle.
The driver presses the brake pedal to apply the brakes. When the pedal is depressed, the piston in the master cylinder moves.
As part of the ABS braking system, speed sensors monitor the speed of each tire and send the information to the ABS control module.
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Automotive Brakes, Safety, And Control Systems
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Electronic Stability Control or ESC is an automatic system in your vehicle. Read on to learn more about ESC and how this car protection works.
Electronic stability control systems use automatic computerized braking of individual wheels to help the driver control the vehicle in difficult driving situations. ESC helps prevent the vehicle from “spinning” or “rolling” due to loss of traction on the road due to wheel slip.
The technology behind the ESC system is very useful in helping the driver control the vehicle during tight steering maneuvers. ESC does not overtly prevent the vehicle from rolling. However, the safety feature helps keep the wheels on the pavement, where the vehicle is less likely to roll.
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ESC is marketed using the names Vehicle Stability Control (VSC), Electronic Stability Program (ESP), Dynamic Stability Control (DSC), and others.
Electronic stability control monitors your steering wheel input and helps the car go where you want it to go. ESC is activated when it detects a possible loss of steering control.
When the car senses that it is not going where the driver is driving, the system makes adjustments to correct the car’s direction or reduce skidding during emergency avoidance maneuvers.
ESC is activated in emergency situations when drivers move the steering wheel too much (called overcorrection) while trying to control the vehicle. Well-intentioned drivers sometimes swerve or take wrong turns. This can occur on slippery roads or hydroplaning and is a major cause of single vehicle accidents.
Braking And Stability Control
Electronic stability control works by modifying the engine throttle and brakes at each wheel. Like other driver aids, ESC turns on when you start your car. The technology runs in the background, monitoring steering action and speed sensors on each wheel.
When sensors detect that the driver is losing control, the ESC system automatically corrects for oversteer and understeer. Applies or eases the brakes on each wheel of the vehicle to bring the vehicle back to its destination. ESC includes traction control systems and adjusts engine power to slow down and applies the brakes if the driver uses too much gas.
These manipulations will significantly reduce your risk of tipping over. They help keep the car on the road, where it’s less likely to get “stuck” on something in the road and roll.
You don’t need to do anything to get your car’s ESC working. It starts controlling the steering and speed when you start the engine.
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ESC is activated when the driver detects that the vehicle has lost control. In the event of a temporary loss of control, the system automatically adjusts the individual wheel brakes to stabilize the vehicle. When your ESC is activated and adjustments are made, a warning light will flash on the instrument panel. As the system applies the brakes, the engine reduces power, and you may experience a slight movement and movement.
This can happen when drivers switch too quickly. When driving, slow down and shift slowly and carefully. Computerized driver aids like ESC can help in dangerous driving situations. ESC cannot replace responsible driving habits on slippery roads.
Most reputable auto repair shops with the right tools can help diagnose and service electronic stability control system problems. There are so many variables involved that it’s difficult to calculate the cost of solving the problems here. For example, replacing a wheel speed sensor costs $100 for one car and $150 for another. Depending on the vehicle, a steering angle sensor can cost anywhere from $100 to $200 or more. Sometimes a software reset or update can fix the problem with your ESC. Labor rates may vary based on vehicle make and model and your region.
ESC systems use steering wheel position sensors to compare wheel position with the vehicle’s steering response. If something goes wrong, ESC makes small adjustments to the brakes or engine torque to help the driver maintain control.
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Your vehicle’s electronic stability control is a valuable safety feature. A malfunctioning ESC will stop working until any problems are resolved. A flashing ESC indicator light on a vehicle’s dashboard is one of several things:
If you see its electronic stability control light on the dashboard, you can drive your car, but do so with extreme caution. A steady ESC light may indicate a safety function malfunction.
Therefore, you should be aware that you are driving without the benefits of electronic stability control and may lose control or roll backwards and lose control. Slow down, avoid heavy braking, and stay off the road if wet. We recommend that you visit a qualified mechanic at your nearest repair shop to resolve the issue as soon as possible.
Chris Hardesty is Cox Automotive’s senior consulting editor for AutoTrader and Kelly Blue Book. He edits and writes articles to advise consumers on the financial aspects of buying and selling cars, educates buyers about driver assistance features and safety features in today’s cars, and shares maintenance and ownership tips. Chris has spent nearly three decades in newspapers, leading… Read more about Chris Hardesty
Brake Control Functions
Frequently Asked Questions What does electronic stability control repair cost? As with most automotive electronics, the cost of repairing a faulty ESC system can vary depending on a number of factors. Replacing the brake light switch is an inexpensive solution to a common problem. Other issues can be more complicated and expensive. Some issues may be covered by the car’s warranty. How to disable electronic stability control? The ESC system is an important safety feature that automatically activates to increase the stability of your vehicle. Turning it off is dangerous. Deliberately disabling the vehicle’s electronic stability control is not recommended. Is electronic stability control standard on all cars? All 2012 and later model cars must have ESC. Some older cars, especially premium brands, have ESC included as an optional feature.
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