DS 3 Manuals

DS 3: Active Safety Brake with Collision Risk Alert and Intelligent emergency braking assistance / Collision Risk Alert

DS 3 2016-2023 Owners Manual

This function warns the driver that their vehicle is at risk of a collision with the vehicle in front, or with a pedestrian or cyclist present in their traffic lane.

Modifying the alert trigger threshold

This trigger threshold determines the sensitivity with which the function warns of the risk of collision.

DS 3. Collision Risk Alert The threshold is set via the Driving/Vehicle touch screen menu.

  • Select one of the three pre-defined thresholds:

"Far", "Normal" or "Close".

The last threshold selected is memorised when the ignition is switched off.


Depending on the degree of risk of collision detected by the system and the alert trigger threshold chosen by the driver, several different levels of alert may be triggered and displayed on the instrument panel.

The system takes account of the vehicle dynamics, the speed of your vehicle and the one in front, the environmental conditions and the operation of the vehicle (actions on the pedals, steering wheel, etc.) to trigger the alert at the most relevant moment.

DS 3. Collision Risk Alert Level 1 (orange): visual alert only, warning that the vehicle in front is very close.

The message "Vehicle close" is displayed.

DS 3. Collision Risk Alert Level 2 (red): visual and audible alert, warning that a collision is imminent.

The message "Brake!" is displayed.

Level 3: in some cases, a vibration alert in the form of micro-braking can be given, confirming the risk of collision.

DS 3. Collision Risk Alert Where the speed of your vehicle is too high approaching another vehicle, the first level of alert may not be displayed: the level 2 alert may be displayed directly.

Important: the level 1 alert is not displayed when there is a stationary obstacle or when the "Near" trigger threshold has been selected.

    Deactivation/Activation. Operating conditions and limits

    Deactivation/Activation By default, the system is automatically activated at every engine start. The settings are changed via the Driving/Vehicle touch screen menu...

    Intelligent emergency braking assistance (iEBA). Active Safety Brake

    Intelligent emergency braking assistance (iEBA) If the driver brakes, but not sufficiently to avoid a collision, this system will provide additional braking, within the limits of the laws of physics...

    Other information:

    DS 3 2016-2023 Owners Manual: Switching on/pausing. Modifying the cruise speed setting.  Switching off. Malfunction

    Switching on/pausing Turn thumbwheel 1 to the "CRUISE" position to select cruise control mode; the function is paused. Press button 2 or 3 to activate cruise control and save a speed setting when the vehicle has reached the desired speed; the vehicle’s current speed is saved as the speed setting...

    DS 3 2016-2023 Owners Manual: Memorising speeds

    This function, used only for the speed limiter and programmable cruise control, lets you save speed settings that will subsequently be proposed for the purpose of configuring these two systems. You can memorise multiple speed settings for each of the two systems...


    Display in operation

    DS 3. Display in operation

    Once the system has been activated, the following information is grouped together in the head-up display:

    The speed of the vehicle. Cruise control/speed limiter information and, if the vehicle is so equipped, the Road signs recognition function. If the vehicle is so equipped, inter-vehicle distance information, lane departure warning system information, lane positioning assist information, and automatic emergency braking alerts. If the vehicle is so equipped, navigation information.

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