ABS is the anti-lock braking system acquiring and managing the tighten angle of each wheel to keep vehicle steerability, directional stability and the best possible deceleration based on severe brake usage and road surfaces so as to stop wheel locking up. The system involves the hydraulic electric control section with the hydraulic actuator meeting located in the engine assembly of the car and containing the hydraulic electric pump and the hydraulic solenoid valves. The electric pump working as a hydraulic pump to develop the pressure needed to charge the reservoirs and the solenoid valve is use to control the pressure in the brake line during the operation. The ABS computer processes data from the wheels speed sensor and controls hydraulic line pressure and checks for failures in the system. The electrical signals that are generated depending on the wheel rotational speed are gotten from specific speed sensors; the front speed sensors are fixed to the steering knuckles while the rear one is fixed to the rear suspension hub carriers. Wherever Dashboard warning light illuminates, informing that ABS needs attention, initial tests involve checking brake fluid, admiring electrical connection, checking fuses and wiring harnesses. In the event of a persistence of these problems, professional diagnosis is advised. For wheel speed sensor replacement, the procedure entails loosening lug nuts, lifting the vehicle, disconnecting the sensor's electrical connection, removing the mounting screw, and gently pulling the sensor out, and then the reverse process while making sure that all the silver screws and lug nuts are tight.