Collision Warning

Collision warning

Collision warning




The collision warning function is designed to warn at high likelihood of collision with the vehicle ahead or a person. The collision warner warns for vehicles driving in the same direction as your own as well as stationary vehicles. The collision warner warns for persons crossing or along your vehicle's travel direction where there is a high risk of collision.
The collision warning function calculates when a warning shall be activated based on speed and direction of the vehicle ahead or person has as well as your own vehicle's speed and direction. In the calculation there is compensation for the normal reaction time that approx. 85% of all drivers have and for the system's response time. If the warning distance is greater than the measured distance to the vehicle ahead and the driver has not taken any action, a collision warning will be activated. For the warning to be effective and for the driver to have time to react, the initial distance may not be shorter than for it to be physically possible to stop the vehicle/avoid the collision. The collision warning consists of combined light and sound.
There are three possible warning distances that can be set via the menu system in Infotainment control module (ICM) (3/281). This setting controls when the warning is activated. In the same menu the driver can also turn the function and the warning sound on and off. The collision warning function cannot be disabled on the Japanese market.
The visual warning is generated by means of the indicator, visual collision warning (27/2) and the audible warning is generated by means of 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 a request to the Infotainment control module (ICM) (3/281) to lower the sound (stereo) to the speakers during the period that the audible warning is generated by the Driver information module (DIM).
The collision warning function shall activate a warning so that approx. 85% of all drivers have a chance to stop, steer aside, or reduce the effects of a collision with a vehicle or a person fulfilling the mentioned criteria.

Note! The visual warning signal may temporarily be out of order at high passenger compartment temperature caused by, e.g., strong sun light. If this happens, the warning sound is activated even if it is deactivated in the menu system.