2021 Citroën C4 Spacetourer - Owner's Manual (316 pages)
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Principles of operation: Using radar with a range of about 100 metres, located at the front of the vehicle, this system detects a vehicle travelling in front of your vehicle. It automatically adapts the speed of your vehicle to that of the vehicle in front. If the vehicle in front is travelling more slowly, the system progressively reduces the speed of your vehicle using just engine braking (as if the driver had pressed the "-" button).
If your vehicle is too close to the vehicle in front or is approaching it too quickly, adaptive cruise control is automatically deactivated. The driver is then alerted by an audible signal accompanied by a message. If the vehicle in front accelerates or changes lane, the adaptive cruise control gradually accelerates your vehicle to return to the programmed speed.
If the driver operates the direction indicator to the left (left-hand drive) or to the right (righthand drive), to overtake a slower vehicle, the adaptive cruise control allows your vehicle to temporarily approach the vehicle in front to assist the overtaking manoeuvre, though never exceeding the programmed speed.
Principles of operation: Using radar with a range of about 100 metres, located at the front of the vehicle, this system detects a vehicle travelling in front of your vehicle. It automatically adapts the speed of your vehicle to that of the vehicle in front. If the vehicle in front is travelling more slowly, the system progressively reduces the speed of your vehicle using just engine braking (as if the driver had pressed the "-" button).
If your vehicle is too close to the vehicle in front or is approaching it too quickly, adaptive cruise control is automatically deactivated. The driver is then alerted by an audible signal accompanied by a message. If the vehicle in front accelerates or changes lane, the adaptive cruise control gradually accelerates your vehicle to return to the programmed speed.
If the driver operates the direction indicator to the left (left-hand drive) or to the right (righthand drive), to overtake a slower vehicle, the adaptive cruise control allows your vehicle to temporarily approach the vehicle in front to assist the overtaking manoeuvre, though never exceeding the programmed speed.
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