Design
Design
Forward facing radar
The forward facing radar is a sensor that is connected to the Forward Sensing Module (FSM). Information transfer between the radar and the Forward Sensing Module (FSM) occurs via local CAN communication. The radar is positioned in the front section of the vehicle (behind the grille).
The forward-sensing radar is used to (identify and) sense targets (vehicles in front) that move in the same direction in front of one's own vehicle. When a target is detected, the radar senses the target's speed in relation to the own vehicle.
When replacing the forward facing radar, the new unit must be calibrated using the diagnostic tool.
Indicator, visual collision warning
Indicator, visual collision warning consists of 12 LEDs in three groups. The LEDS are directly connected to the Forward Sensing Module (FSM).
The indicator is used to visually warn the driver of an imminent collision, in order to minimize the effects of or prevent a collision. The visual collision warning indicator is located on the top edge of the dashboard on the driver's side.
The Forward Sensing Module (FSM) controls the light intensity at the visual collision warning indicator via pulse width modulation. The three groups of LEDs are separately connected to the Forward Sensing Module (FSM), this means that the Forward Sensing Module (FSM) can control each group of LEDs individually.
The indicator has an internal temperature sensor. The task of the temperature sensor is to protects the electronics. At temperatures above 100 °C / 212 °F the indicator does not light the LEDs when the Forward Sensing Module (FSM) requests it. When this has occurred, the Forward Sensing Module (FSM) prevents the indicator from being lit for a further 10 minutes.