What happens if a car runs out of brake fluid?

1 Answers
JocelynRose
07/30/25 2:33am
Brake fluid, also known as hydraulic brake fluid or pressure oil, is the liquid medium that transmits braking pressure in a hydraulic braking system. It is used in vehicles equipped with hydraulic braking systems and is an indispensable component of the braking system. Within the braking system, it serves as a force transmission medium. Since liquids are incompressible, the pressure output from the master cylinder is directly transmitted to the wheel cylinders through the brake fluid. Here are the consequences of having no brake fluid: Safety issues: It severely affects the transmission response of the braking system, causing air to enter the brake lines, which can lead to brake failure or complete loss of braking, ultimately resulting in traffic accidents and safety hazards.
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