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Driving -> Parking sensors for Your Citroen C4 SUV Second Generation (2010-2018)

Driving  
Parking sensors  
Rear parking sensors  
This system indicates the proximity of an  
obstacle (person, vehicle, tree, gate, etc.)  
which comes within the field of detection of  
sensors located in the bumper.  
The system is switched on by engaging reverse  
gear.  
This is confirmed by an audible signal.  
The system is switched off when you come out  
of reverse gear.  
Certain types of obstacle (stake, roadworks  
cone, etc.) detected initially will no longer be  
detected at the end of the manoeuvre, if they  
are located in blind spots in the sensors' field  
of detection.  
Audible assistance  
The proximity information is given by an  
intermittent audible signal, the frequency of which  
increases as the vehicle approaches the obstacle.  
The sound emitted by the speaker (right or left)  
indicates the side on which the obstacle is located.  
When the distance between the vehicle and  
the obstacle becomes less than approximately  
thirty centimetres, the audible signal becomes  
continuous.  
Visual assistance  
This system cannot in any circumstances replace  
the need for vigilance on the part of the driver.  
This supplements the audible signal by  
displaying bars in the screen which move  
progressively nearer to the vehicle.  
When the obstacle is very close, the "Danger"  
symbol is displayed in the screen.  
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Driving  
Deactivation/Activation of the  
front and rear parking sensors  
Front parking sensors  
Operating fault  
In addition to the rear parking sensors, the front  
parking sensors are triggered when an obstacle  
is detected in front and the speed of the vehicle is  
still below 6 mph (10 km/h).  
The front parking sensors are interrupted if the  
vehicle stops for more than three seconds in  
forward gear, if no further obstacles are detected  
or when the speed of the vehicle exceeds 6 mph  
(10 km/h).  
In the event of a malfunction of  
the system, when reverse gear  
is engaged this warning lamp is  
displayed in the instrument panel  
and/or a message appears in the  
screen, accompanied by an audible  
signal (short beep).  
Contact a CITROËN dealer or a  
qualified workshop.  
The sound emitted by the speaker (front or  
rear) indicates whether the obstacle is in front  
or behind.  
The function is deactivated by pressing this  
button. The indicator lamp in the button  
comes on.  
Pressing this button again reactivates the  
function. The indicator lamp in the button  
goes off.  
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In bad weather or in winter, ensure  
that the sensors are not covered with  
mud, ice or snow. When reverse gear is  
engaged, an audible signal (long beep)  
indicates that the sensors may be dirty.  
Certain sound sources (motorcycle,  
lorry, pneumatic drill, etc.) may trigger  
the audible signals of the parking  
sensor system.  
The function will be deactivated  
automatically if a trailer is being towed  
or a bicycle carrier is fitted (vehicle  
fitted with a towbar or bicycle carrier  
recommended by CITROËN).  
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