General information about the braking system (VW Passat B6)

The speed of the Passat, depending on the modification, reaches 190–240 km/h. The weight of the car creates an additional load on the brakes. When installing modern powerful engines on the Passat, its total weight reaches 2200 kg – more than two tons. The front and rear wheels of the car are equipped with disc brakes. To improve the thermal mode of the front brakes, internal ventilation of the discs is provided. The brakes do not need to be adjusted, they are installed independently.

The brake booster and anti-lock braking system (ABS) increase braking efficiency. The electronic stabilization system (ESP) serves to optimize active safety. The interaction of these systems achieves high braking efficiency and a minimum braking distance in critical situations, since the "brake assistant" in these cases increases the pressure of the brake pedal to the stop.

The Passat is equipped with two diagonally located brake circuits. One circuit operates the front right and rear left wheels, the second - the front left and rear right wheels. When only one of the circuits is operating, you have to press the brake pedal harder to achieve braking of the car. In this case, the pedal travel increases, and the braking distance is lengthened.

When you press the brake pedal, the pusher presses on two pistons of the master brake cylinder, which, through the brake booster, generate pressure in the system.

The main brake cylinder is not repairable. If it fails, it must be replaced as an assembly. The pistons transmit the pedal force via a hydraulic line to the brake calipers.



The caliper pushes the piston of the wheel cylinder, which in turn presses the pads against the brake disc. When the pedal is released, the piston returns to its original position and the pads move away from the disc. The distance between the pads and the disc becomes about 1 mm, but this is enough for the disc to rotate freely.

(The original article is available at www.VWManual.ru)