Brakes, Basic Function - GF42.00-P-9900A

Model All (4xWD) 

Model All (CAR) 

Overview 

This document contains information on:

• General 
• Function 
  • Service brakes 
  • Parking brake 
  • Brake and traction system 

General 

The brake denotes the entirety of all brake systems installed on a vehicle, and its purpose is as follows:

• Maintain or reduce speed.
• Bring vehicle to a standstill.
• Keep vehicle stationary.

Function 

Service brakes 

The service brake is an assembly of the brake system used to reduce the speed of the vehicle (until stationary if necessary). The driver doses the braking effect of the service brake via the brake pedal. The service brake acts on all wheels of the vehicle.

Parking brake 

The parking brake secures a stationary or parked-up vehicle against rolling away, even on inclined roadways. Unlike the service brake, the parking brake acts on the brake system of one axle. Usually the rear axle. Activation takes place manually via the electric parking brake switch or automatically depending on the driving condition.

Brake and traction system 

The brake and traction system (e.g. ABS or ESP) assists the driver in suddenly occurring dangerous situations or in critical driving situations, and thus ensures active safety. It includes various subsystems that have a checking, optimizing or regulating function.

	Additional basic functions
	Parking brake, basic function		GF42.20-P-1002A
	Regenerative brake system, basic function	Model all (CAR)	GF42.22-P-1008A
	Brake and traction system, basic function		GF42.47-P-1000A
	Brake light switch, basic function		GF42.10-P-2001A
	Steering wheel angle sensor, basic function		GF42.45-P-2005A
	Electronic Stability Program control unit, basic function		GF42.45-P-9890A
	Traction system hydraulic unit, basic function		GF42.50-P-2000A