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Driving -> Lane departure warning system for Your Citroen C4 SUV Second Generation (2010-2018)

Driving  
Lane departure warning system  
Activation  
Operating fault  
F
When switching the ignition on or with  
In the event of a malfunction, the  
the engine running, press this button; the  
indicator lamp comes on.  
service warning lamp comes on,  
accompanied by an audible signal  
and a message in the screen.  
Contact a CITROËN dealer or a qualified  
workshop.  
Deactivation  
F
Press this button again, the indicator lamp  
goes off.  
The status of the system remains in the  
memory when the ignition is switched off.  
The detection may be impeded:  
System which detects the involuntary crossing  
of longitudinal traffic lane markings on the  
ground (solid or broken line).  
Sensors, fitted below the front bumper, trigger  
a warning if the vehicle drifts over a lane  
marking (speed higher than 50 mph (80 km/h)).  
This system is particularly useful on motorways  
and main roads.  
-
-
if the sensors are dirty (mud, snow...),  
if the markings on the ground are  
worn,  
Detection  
You are warned by the vibration of the driver's  
seat cushion:  
-
if there is little contrast between the  
markings on the ground and the  
road surface.  
-
on the right-hand side, if the marking on  
the ground has been crossed on the right,  
on the left-hand side, if the marking on the  
ground has been crossed on the left.  
-
The lane departure warning system  
cannot in any circumstances replace  
the need for vigilance on the part of the  
driver.  
No warning is transmitted while the direction  
indicator is active and for approximately  
20 seconds after the direction indicator is  
switched off.  
It is necessary to observe driving  
regulations and take a break every  
two hours.  
A warning may be transmitted if a direction  
marking (e.g. arrow) or non-standard marking  
(e.g. graffiti) is crossed.  
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