Front Assist Distance Monitoring System

Front Assist Distance Monitoring System

The Front Assist distance monitoring system is an expansion of the Adaptive Cruise Control (ACC) --> [ Adaptive Cruise Control ] Adaptive Cruise Control and warns the driver in two levels before a collision with a vehicle ahead.

If the Distance Regulation Sensor (G550) detects a possible collision, at speeds above 30 km/h, there is first a warning with a symbol in the instrument cluster display and then a warning tone. At the same time, the vehicle is prepared for possible emergency braking by the driver. To do this, the brake pads are applied to the brake discs but without slowing the vehicle. In addition, the hydraulic brake assist reacts sensitively to the driver brake operation.

If the driver does not react to the warning, the Front Assist distance monitoring system intervenes with a brief lurch through braking to bring attention to the collision risk - the vehicle speed is not reduced by this braking lurch. The braking lurch only takes place in driving situations in which a danger should be avoided. In situations in which it can be assumed that the driver is already alert, e.g. on tight curves or when the driver is braking, the braking lurch is suppressed.

The Front Assist distance monitoring system is operated using the Adaptive Cruise Control Button (E357) in the turn signal lever and the instrument cluster display. While driving, important information is shown in the instrument cluster display.

DTC recognition and display:

Distance Regulation Control Module (J428) is equipped with On Board Diagnostics (OBD) which assists troubleshooting.

The "Guided Fault Finding" function is to be used for troubleshooting of one of the systems described as in chapter "Vehicle Diagnosis, Testing and Information System".

Front Assist distance monitoring system components:

• Distance Regulation Control Module (J428)

• Distance Regulation Control Module (J428) is mounted on front of vehicle, behind VW-logo in the radiator protective grille.

• Distance Regulation Control Module (J428) must not be disassembled further and contains the following components:

• Adaptive Cruise Control Sensor (G550)

• Distance Regulation Sensor Heater (Z47)

• Distance Regulation Control Module (J428), removing and installing --> [ Distance Regulation Control Module ] Distance Regulation Control Module

• Adaptive Cruise Control Button (E357)

• The Adaptive Cruise Control Button (E357) is integrated in the turn signal switch on the steering column --> [ Adaptive Cruise Control Button ] Service and Repair.