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Assistance during collision risks

Assistance during collision risks12 can help the driver avoid a collision by providing warnings, automatic braking and steering assistance.
PS2-2007-City Safety audio-visual warning and radar sensor
Function overview
  1. PS-Icon circle 1Collision warning audible signal
  2. PS-Icon circle 2Collision warning symbol
  3. PS-Icon circle 3Camera and radar sensor distance monitoring

Normally, the occupants of the vehicle will not be aware of the function except when the system intervenes when a collision is imminent.

The function can help the driver avoid a collision when e.g. driving in stop-and-go traffic, when changes in the traffic ahead and driver distraction could lead to an incident. The function will then activate a brief, forceful braking in an attempt to stop your vehicle immediately behind the vehicle or object ahead.

The function is always activated and cannot be switched off. However, you can set a level of sensitivity for the system.

Sub-functions

Assistance during collision risks can, if necessary, provide the following:
  • Collision warning
  • Assisted braking
  • Automatic braking
  • Steering assistance

Step 1 – Collision warning

If there is a risk of a collision with a pedestrian, cyclist, large animal or another vehicle, the driver will be alerted with light, sound and pulsations in the brake pedal. At lower speeds, or if the driver rapidly brakes or accelerates, the brake pedal pulsations will not be provided because pulsation intensity varies with the vehicle's speed.

Step 2 – Assisted braking

In assisted braking, braking is augmented if the system determines that the pressure the driver is exerting on the brake pedal is insufficient to prevent the collision.

Step 3 – Automatic braking

If the driver has not taken evasive action and a collision is imminent, the automatic braking function will be triggered. This occurs whether or not the driver is pressing the brake pedal. Full braking force will be applied to reduce the speed at impact or reduced braking effect will be applied if this is sufficient to avoid the collision.

The seat belt tensioner may be activated when the automatic braking function is triggered.

The function is designed to be activated as late as possible to help avoid unnecessary intervention. Automatic braking will only be applied after or during a collision warning.

If automatic braking has prevented a collision with a stationary object, the vehicle will be kept at a standstill until the driver takes action. If the vehicle has slowed to avoid colliding with a slower-moving vehicle ahead, your speed will be reduced to that vehicle's speed.

Auto-braking can always be cancelled if the driver presses hard on the accelerator pedal.

When the function is activated and braking, the brake light will illuminate. A message will be displayed in the instrument panel saying that the function is or has been active.

 Warning

The function may not be used to change how the driver operates the vehicle. The driver must not only rely on the function to brake the vehicle.

Steering assistance

The function can help the driver reduce the risk of the vehicle leaving its lane unintentionally or colliding with another vehicle or obstacle by actively steering the vehicle back into its lane or swerving. Steering assistance is not provided sequentially, but instead can occur regardless of when the other steps take place.

After the system has automatically intervened, this text message will appear in the instrument panel.

 Note

It is always the driver who must decide how much the vehicle should be in control – the vehicle can never take command.

 Warning

  • The function is supplementary driver support intended to facilitate driving and help make it safer – it cannot handle all situations in all traffic, weather and road conditions.
  • The driver is advised to read all sections in the Manual about this function to learn of its limitations, which the driver must be aware of before using the function.
  • Driver support functions are not a substitute for the driver's attention and judgment. The driver is always responsible for ensuring the vehicle is driven in a safe manner, at the appropriate speed, with an appropriate distance to other vehicles, and in accordance with current traffic rules and regulations.
  1. 1 Collision Avoidance
  2. 2 This function is not available on all markets.