9. Brake system
Cars are equipped with two systems of brakes working independently from each other — working and parking. In case of refusal one of systems can stop the car by means of another. The system is divided into two contours.
The first is responsible for braking of forward wheels, the second — back. At failure of one contour, for example because of leakage, the car can be stopped by other contour. In this case to receive the same effective braking, as well as at the serviceable brake system, it is necessary to press a brake pedal with considerably big effort. The course of a pedal increases, and the brake way is considerably extended.
The working (foot) hydraulic brake system on the Mercedes models of the E-class consists of the main brake cylinder, the amplifier and disk brakes on forward and back wheels. Pressure in both brake contours is created in the dual main brake cylinder when pressing a brake pedal.