- the brake pedal is connected to the master cylinder;
- when the pedal is pressed, pressurized fluid from the master cylinder is transferred through metal tubes and flexible hoses to the front and rear brake mechanisms;
- the wheel cylinders are hydraulic modulators that convert the fluid pressure created in the main brake cylinder into movement of the brake mechanism elements;
- the front and rear pistons of the brake caliper move and, due to friction against the brake discs and drums, provide the required deceleration of the vehicle;
- when the brake pedal is released, the pressure in the system decreases. The brake pads and pistons return to the neutral or original position and braking ceases.
When the brake fluid level drops, the brake master cylinder fluid level sensor turns on the warning lamp in the instrument cluster. If the warning lamp lights, first check that the parking brake is released, as the lamp indicates a low fluid level and the parking brake is applied.