PRE-CRASH SAFETY SYSTEM


  1. OUTLINE


    1. Pre-crash Safety (PCS) System


      1. The pre-crash safety system detects a possibility of a frontal collision of the vehicle with an obstacle, based on information received from various sensors. PCS lessens the damage sustained in a collision by operating in unison with other systems. As part of this, the effectiveness of the pretensioner mechanism is enhanced by retracting the seat belts, and systems that dampen the impact of the collision, such as the brake control system, are operated.

      2. This system uses a millimeter wave radar sensor to predict a possible collision with a vehicle or obstacle in front. It retracts the seat belts before the collision and performs brake assist control and brake control*.

        *: Models with Pre-crash Brake

        A004UWYE07

  2. MAJOR DIFFERENCE


    1. The new models have been modified from the previous models as shown below:


      1. A combination meter assembly with the color type multi-information display has been added.

  3. PRECAUTION


    1. When the millimeter wave radar sensor detects an object in front of the vehicle under the following conditions, the driving support ECU assembly may determine that a collision is unavoidable, and operate the pre-crash safety system. This does not indicate a malfunction.

      A004V2QE01
      Number Condition
      (1) Object near outer edge of a curved road (Guard rail, street light or traffic sign or display sign)
      (2) Oncoming traffic on a curved road
      (3) Opposing traffic at an intersection
      (4) Narrow iron bridge or tunnel
      (5) Metal object, steel plate or bump on the road
      (6) Rapid approach to a preceding vehicle
      (7) Toll gate
      (8) Overpass or sign over the road
      (9) Vehicle height changes significantly (front of vehicle inclined either upward or downward)
      (10) Millimeter wave radar sensor is misaligned (such as after reinstallation or after a collision)
      (11) Metal object such as a sign in front of the vehicle on an uphill slope
      (12) Metal object or steel plate in the ground at the base of a downhill slope

    2. The millimeter wave radar sensor might not be able to detect the following objects as collision objects:

      Objects that cannot be detected Plastic items (safety cones, etc.), etc.
      Objects that cannot be detected in a stable manner People, Bicycles, Motorcycles, Trees, Animals, Snow Fence, etc.

    3. Conditions in which detection performance deteriorates:


      • Vehicle height changes significantly (front of vehicle inclined either upward or downward)

      • Millimeter wave radar sensor is misaligned (such as after reinstallation or after a collision)

      • On a tight curve or bumpy road

      • Something or someone suddenly enters the path of the vehicle such as when the vehicle is steered sharply

      • Something or someone suddenly enters the path of the vehicle at a place such as an intersection

      • Another vehicle suddenly cuts in the direction of travel of the driver's vehicle

      • In severe weather such as heavy rain, fog, snow or a sand storm

      • Vehicle is skidding sideways while VSC is not operating

    4. Conditions in which the millimeter wave radar sensor does not detect an object:


      1. The vehicle collides with an object located outside the detection area of the millimeter wave radar sensor (+/- 10°), such as in a side collision, rear collision, etc.