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Safety -> Active City Brake for Your Citroen Ds3 SUV First Generation (2009-2019)

157  
Safety  
Active City Brake  
Active City Brakeis a driving assistance system  
that aims to avoid a frontal collision or reduce  
the speed of an impact if the driver does  
not take sufficient action (inadequate brake  
application).  
Principle  
conditions for activation  
Active City Brakeonly operates if the following  
conditions are met:  
ignition on,  
the vehicle is in a forward gear,  
speed is between about 3 and 18 mph  
(5 and 30 km/h),  
the braking assistance systems (ABS,  
EBFD, emergency braking assistance) are  
not faulty,  
the trajectory control systems (ASR, DSC)  
are not deactivated or faulty,  
the vehicle is not in a tight corner,  
the system has not been triggered during  
the previous 10 seconds.  
This system is designed to improve driving safety.  
It remains the driver's responsibility to  
continuously monitor the state of the traffic and  
to assess the distances and relative speeds of  
other vehicle.  
Active City Brakecan in no circumstances  
replace the need for vigilance on the part of  
the driver.  
Using a laser sensor located at the top of the  
windscreen, this system detects a vehicle  
running in the same direction or stationary  
ahead of your vehicle.  
When necessary, the vehicle's braking system  
is operated automatically to avoid a collision  
with the vehicle ahead.  
never look at the laser sensor through  
an optical instrument (magnifying glass,  
microscope...) at a distance of less than  
10 centimetres: risk of eye injury.  
Automatic braking occurs later than if  
done by the driver, so as to intervene  
only when there is a high risk of  
collision.  
Operation  
When your vehicle is too close to or  
approaches the vehicle ahead too quickly the  
system automatically applies the brakes to  
avoid a collision.  
The collision can be avoided automatically if the  
difference in speed between your vehicle and the  
vehicle ahead does not exceed 9 mph (15 km/h).  
Above this threshold, the system will do what  
is possible to avoid or reduce the accident by  
lowering the speed of impact.  
The triggering of the system may cause  
the engine to stall, unless the driver  
depresses the clutch pedal quickly  
enough during automatic braking.  
You are then alerted by the display of a  
message.  
The brake lamps on your vehicle come on to  
warn other road users.  
The automatic braking may bring the vehicle to  
a complete stop if the situation requires it.  
In this case, the vehicle is held stationary  
temporarily (for about 1.5 seconds) to allow  
the driver to take back control by pressing the  
brake pedal.  
During automatic braking, the driver  
can always obtain a higher rate of  
deceleration than that controlled by the  
system, by pressing firmly on the brake  
pedal.  
After an impact, the system is  
automatically put out of service: it no  
longer operates.  
You must go to a CITROËN dealer or a  
qualified workshop to have the system  
made operational again.  
159  
Safety  
Operating limits  
The system only detects vehicles that are  
stationary or moving in the same direction as  
your vehicle.  
The system is not triggered or is interrupted if  
the driver:  
In difficult weather conditions (very  
heavy rain, snow, fog, hail...), braking  
distances increase, which can reduce  
the ability of the system to avoid a  
collision.  
The driver must therefore remain  
particularly vigilant.  
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accelerates strongly  
or turns the steering wheel suddenly  
(avoiding manoeuvre).  
It does not detect small vehicles  
(bicycles, motorcycles), pedestrians or  
animals, nor non-reflective stationary  
objects.  
Never leave accumulations of snow or  
any object projecting above the bonnet  
or in front of the roof: this might fall into  
the field of vision of the sensor and  
generate a detection.  
deactivation  
The system is deactivated in the vehicle  
configuration menu, accessible with the ignition on.  
Its state is memorised when the ignition is  
switched off.  
With the monochrome screen c  
With the colour screen  
When the system is deactivated, a  
message is displayed every time the  
ignition is switched on, to warn you.  
F
Press the MENU button for access to the  
main menu.  
Select "Personalisation-configuration".  
Select "define vehicle parameters".  
Select "driving assistance".  
Select "Automatic emergency braking: OFF"  
or "Automatic emergency braking: ON".  
Press the "7" or "8" button to check or  
uncheck the box and respectively activate  
or deactivate the system.  
Press the "5" or "6" button, then the OK  
button to select the "OK" box and confirm  
or the Back button to cancel.  
F
F
F
F
F
F
Press the SETUP button.  
Select "Vehicle parameters" and press  
the knob to confirm.  
F
F
F
F
F
F
Select "driving assistance" and press the  
knob to confirm.  
Select "Automatic emergency braking: OFF"  
or "Automatic emergency braking: ON".  
Check or uncheck the box to activate or  
deactivate the system.  
Press the knob to confirm.  
161  
Safety  
Operating faults  
Sensor fault  
System fault  
In the event of an impact to the  
The operation of the laser sensor may suffer  
interference from accumulations of dirt or  
misting of the windscreen. In this case you are  
warned by the display of a message.  
Use the windscreen demisting and regularly  
clean the area of the windscreen in front of the  
sensor.  
In the event of a malfunction of the system, you  
are warned by an audible signal and the display  
of the message "Automatic braking system  
fault".  
Have the system checked by a CITROËN  
dealer or a qualified workshop.  
windscreen at the sensor, deactivate  
the system and contact a CITROËN  
dealer or a qualified workshop to have  
your windscreen replaced.  
Never try to remove, adjust or test  
the sensor.  
only a CITRoËN dealer or a qualified  
workshop is able to work on the system.  
Do not stick or otherwise fix any object on  
the windscreen in front of the sensor.  
When towing a trailer or when the  
vehicle is being towed, the system must  
be deactivated.