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). Refer to=> [ 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, for example, 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". Refer to => [ Vehicle Diagnosis, Testing and Information Systems ] Wiring.

Front Assist Distance Monitoring System Components

• Distance Regulation Control Module (J428)

• Adaptive Cruise Control Button (E357) in turn signal switch