Electric Parking Brake, Basic Function - GF42.20-P-1003A

Model All (4xWD, CAR) 

Overview 

This document contains information on:

• General 
• Function requirements 
• Function 

General 

The electric parking brake (EFB) holds the vehicle stationary on uphill and downhill gradients even when the driver is absent.

It is activated manually via a control element or automatically according to the driving state.

Function requirements 

• Ignition ON (circuit 15)

Function 

Combined floating brake calipers with integrated electric actuator motors are located on the rear axle.

The braking parts are held in the brake position when de-energized by a self-locking mechanical effect. The ESP® control unit actuates the left electric parking brake actuator motor and the right electric parking brake actuator motor.

When the EFB is active, the red indicator lamp lights up in the display of the instrument cluster.

When the EFB is not active, the red warning message "Risk of rolling - EFB not closed" appears in vehicles with manual transmission when the driver's door is opened.

If the red indicator lamp flashes, there is a malfunction.

	Function schematics
	Function schematic for electric parking brake variables	Model 465	PE42.20-P-2500-97F
		Model 118, 167, 177, 243, 247 Model 213, 238, 257, 290 as of model year 2021	PE42.20-P-2500-97A
		Model 223, 295, 296, 297	PE42.20-P-2500-97B
		Model 206, 232, 236, 254	PE42.20-P-2500-97C
		Model 464	PE42.20-P-2500-97D
		Model 192	PE42.20-P-2500-97E
	Additional basic functions
	Electric parking brake release, basic function		GF42.20-P-1004A
	Emergency braking, basic function		GF42.20-P-1005A
	Run-off control basic function		GF42.20-P-1006A
	Electric parking brake actuator motors, basic function		GF42.20-P-2000A
	Electric parking brake switch, basic function		GF42.20-P-2004A
	Electronic Stability Program control unit, basic function		GF42.45-P-9890A
	Dynamometer test mode, basic function		GF42.47-P-1013A