Understanding anti-lock braking systems (ABS)
If the wheels on your vehicle lock up, it will take longer to stop and make steering nearly impossible. That’s why ABS braking technology was invented. It prevents your wheels from locking so you can maintain control of your vehicle in heavy braking situations.
Your vehicle goes through a complex process before engaging the ABS. Each wheel on your vehicle is connected to a sensor that monitors its speed. These sensors continuously send information to an electronic control unit (ECU), which analyzes the data and determines an appropriate course of action. When a wheel stops moving and starts to skid, the ECU signals to the ABS box to readjust the pressure going to the affected brake pads by returning hydraulic fluid to the master cylinder.
These small readjustments happen up to ten times per second and cause the brake pedal to pulse and vibrate. This is completely normal and happens because the brakes are being rapidly applied and released.
If your ABS warning light suddenly comes on, immediately visit your nearest Mr. Muffler to diagnose and fix the problem.