Modern-day cars usually have a hydraulic braking system. A hydraulic braking system is nothing but a simple arrangement of a braking mechanism that uses brake fluid to stay functional. When the brake fluid goes low, the fluid pressure fails to distribute itself evenly around the braking system and thereby reducing the overall braking performance. Any kind of leak, damaged brake lines, worn brake pads- are the factors that cause the brake fluid to go low. So, inspect the braking system all the time, replace the fluid whenever needed- for preventing any sort of inconvenience due to brake failure.