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Driving -> Collision risk alert for Your Citroen C4 Grand Picasso SUV Second Generation (2013-2022)

Driving  
Collision risk alert  
System providing a warning to the driver that their vehicle is at risk of collision with the vehicle in front.  
The collision risk alert system can be activated  
or deactivated by the driver.  
From the secondary page of the "Driving  
assistance" menu:  
Setting the thresholds for  
the alert  
The alert thresholds determine how you want to  
be alerted to the presence of a vehicle running  
in front of you.  
select the "Vehicle settings" menu,  
check the "Collision risk alert" line and  
confirm.  
You can choose from three thresholds:  
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1: "Distant", to be given an early alert  
(cautious driving).  
2: "Normal".  
3: "Close", to be given a later alert (sporty  
driving).  
This system operates from 20 mph  
(30 km/h), only when other vehicles are  
running in the same direction as your  
vehicle; the system does not detect  
stationary objects. A radar is fitted at  
the front of the vehicle.  
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This function can be deactivated  
permanently by a CITROËN dealer or a  
qualified workshop.  
From the secondary page of the "Driving  
assistance" menu:  
This system has been designed to  
improve driving safety.  
select the "Vehicle settings" menu,  
check the "Collision risk alert" line,  
press on the magnifying glass,  
modify the alert threshold and press on  
"Finish" to memorise the threshold and  
leave the menu.  
It is the responsibility of the driver to  
keep a constant check on the state of  
the traffic, to assess the relative speed  
and distance of other vehicles.  
The collision risk alert system can never  
replace the vigilance and responsibility  
of the driver.  
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Driving  
Alerts  
According to the collision risk detected by the  
system and the alert threshold chosen, three  
levels of alert can be triggered:  
Level 3: an increase in  
the tension of the driver's  
seat belt, to hold the driver  
against the backrest of their  
seat.  
The change from one level of alert  
to the next takes place if the driving  
conditions do not change (speed  
unchanged, no change of lane...)  
Level 1: visual alert only (orange)  
indicating that the vehicle in front is  
very close. The message "Vehicle  
close" is displayed.  
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The 3rd level of alert is not triggered or  
is interrupted in the event of an impact  
between the two vehicles.  
The increase in the tension of the  
driver's seat belt is not intended as an  
alert for the driver: it does not in any  
circumstances assure the function of  
driver safety.  
If the speed of your vehicle is too high  
when approaching another vehicle, the  
first level of alert may not be displayed:  
the level 2 alert may be displayed  
directly.  
On the other hand, the level 1 alert  
is never displayed with the triggering  
threshold 3 (close).  
This level of alert is based on the inter-vehicle  
time between your vehicle and the one in front.  
Level 2: visual (red) and audible  
alerts indicating that a collision is  
imminent. The message "Brake!" is  
displayed.  
The triggering of this alert does not act  
on the safety functions provided by the  
seat belts.  
Severe weather conditions (very heavy  
rain, accumulation of snow in front  
of the radar) may interfere with the  
operation of the system, resulting in  
the display of the message "System  
inactive: Reduced visibility". The  
system remains unavailable until the  
message disappears.  
This level of alert is based on a time before  
collision. It takes account of the vehicle  
dynamics, the speed of your vehicle and  
the speed of the vehicle in front, the driving  
conditions, the situation with your vehicle  
(cornering, pedals pressed, etc.) to trigger the  
alert at the right moment.  
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Driving  
Operating fault  
In the event of a fault, you are  
The operation of the radar, located in  
the front bumper, may be disturbed by  
accumulations of grime (dust, mud...)  
or in certain weather conditions (snow,  
ice...).  
The message "SYSTEM INACTIVE:  
Visibility reduced" is displayed to signal  
that the system has been put into  
standby.  
alerted by the display of the Service  
warning lamp, accompanied by a  
message.  
Consult a CITROËN dealer or a  
qualified workshop.  
Clean the front bumper regularly.  
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