Distance Control

Fig 1: Identifying Distance Control Function (1 Of 3)

Courtesy of VOLVO CARS CORPORATION

Distance control is a function that informs of the time interval to the vehicle in front.

If the time interval is less than the distance that has been set, the driver is informed of this via a continuously lit light indication in the windscreen. The light indication is generated by the visual collision warning indicator (27/2). Distance control is based on target data taken from the forward facing radar.

The switch for distance control is located in the center console.

The time interval and setting of this is the same as adaptive cruise control and is carried out using the arrow buttons in on the steering wheel. Distance control can only be active when the adaptive cruise control is off or in stand-by mode.

The distance control function can be active at speeds greater than 30 km/h.

Fig 2: Identifying Distance Control Function (2 Of 3)

Courtesy of VOLVO CARS CORPORATION

The function is designed to give a warning when the vehicle is about to leave the lane inadvertently calculates when to activate a warning based on the position of the vehicle in relation to the lane's road markings.

The system consists of a camera (27/5) that reads the lanes painted road markings.

The driver is warned via an audible signal when the vehicle crosses the lane's road markings without using the indicators. A warning is only given if there are road markings on both sides of the lane and the vehicle is not performing exaggerated maneuvers.

The audible warning is generated via the Driver information module (DIM) (5/1). The Forward Sensing Module (FSM) (4/80) transmits a request via CAN to the Driver information module (DIM) which generates the audible warning. The Forward Sensing Module (FSM) also transmits the request to the Infotainment control module (ICM) (3/281) to silence the stereo sound from the loudspeakers during the period that the audible warning is generated by the Driver information module (DIM).

The switch is located in the center console.

Fig 3: Identifying Distance Control Function (3 Of 3)

Courtesy of VOLVO CARS CORPORATION

The function is designed to attract the driver's attention when it senses swerving driving behavior, for example if the driver is distracted or is on the verge of falling asleep.

The forward sensing camera (27/5) reads the lane's road markings and compares the stretch of road with the driver's steering wheel movements. The driver is warned via an audible signal when the vehicle does not continuously follow the lane.

The audible warning is generated via the Driver information module (DIM) (5/1). The Forward Sensing Module (FSM) (4/80) transmits a request via CAN to the Driver information module (DIM) which generates the audible warning. The Forward Sensing Module (FSM) also transmits the request to the Infotainment control module (ICM) (3/281) to mute the stereo sound from the loudspeakers during the period that the audible warning is generated by the Driver information module (DIM).