Brake Fluid and the Hydraulic System

1. Brake Pedal Force: When you press the brake pedal, it activates the master cylinder, which converts your physical effort into hydraulic pressure.
2. Brake Fluid and Hydraulic Pressure: The brake fluid in the system transmits this pressure through the brake lines to the brake calipers or wheel cylinders at each wheel. Since fluids are incompressible, the pressure is evenly distributed, allowing for consistent braking force.
3. Activation of Brake Components: This hydraulic pressure forces the brake pads or shoes to clamp onto the rotors or drums, creating the friction needed to slow or stop the vehicle.
4. Impact of Low Brake Fluid: When brake fluid levels drop, usually due to leaks, wear, or evaporation, the system can no longer generate adequate pressure. As a result:
   • You may notice a soft or spongy brake pedal.
   • You might need to press the pedal harder and farther to achieve braking.
   • Severe fluid loss can result in complete brake failure.

Proper maintenance, including regular checks of brake fluid levels and condition, is essential to keep your braking system reliable and safe.