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Driving -> Lane positioning assist for Your Citroen C4 SUV Third Generation (2020-2025)

Driving  
a trailer is not connected or the trailer is not  
an approved type.  
This system is particularly useful on  
motorways and main roads.  
Operating limits  
The system may issue an alert when the  
vehicle is travelling on a long, straight  
road with smooth road surface even if the  
driver thinks they are holding the steering  
wheel correctly.  
– Adverse weather conditions.  
– Driving on slippery road surfaces (risk of  
aquaplaning, snow, ice).  
– In roadworks or toll booth areas.  
– Driving on racing circuits.  
– Driving on a rolling road.  
The system may not operate or may produce  
unsuitable corrections to the steering in the  
following situations:  
– Poor visibility (insufficient road lighting,  
snowfall, rain, fog).  
Operating conditions  
– Vehicle speed between 40 and 112 mph (65  
and 180 km/h).  
Malfunction  
In the event of a malfunction, the  
Service warning lamp comes on  
– Road marked with a central dividing line.  
– Steering wheel held in both hands.  
– Direction indicators not activated.  
– ESC system activated and operational.  
– Dazzle (headlamps of an oncoming vehicle,  
low sun, reflections on a wet road surface,  
leaving a tunnel, alternating light and shade).  
– Windscreen area in front of the camera  
dirty, misted up, frost-covered, snow-covered,  
damaged or covered by a sticker.  
– Lane markings eroded, partially hidden (snow,  
mud) or multiple (roadworks, surface joints).  
– Travelling in a tight bend.  
and this (orange) symbol appears on the  
instrument panel, accompanied by the display of  
a message and an audible signal.  
Have it checked by a CITROËN dealer or a  
qualified workshop.  
The system helps the driver only if there  
is a risk of the vehicle unintentionally  
wandering from the lane it is being driven in. It  
does not manage the safe driving distance,  
vehicle speed or braking.  
The driver must hold the steering wheel with  
both hands in a way that allows control to  
be maintained in circumstances where the  
system is not able to intervene (for example, if  
the central dividing line disappears).  
Lane keeping assist  
For more information, refer to the  
General recommendations on the use  
of driving and manoeuvring aids.  
– Winding roads.  
– Presence of a tarmac joint on the road.  
Risk of undesirable operation  
The system corrects the vehicle's trajectory by  
alerting the driver as soon as it detects a risk of  
involuntary lane departure or crossing of a verge  
or hard shoulder (depending on version).  
To do this, the system uses a camera, placed on  
the upper part of the windscreen, identifying the  
lane markings on the ground and the side of the  
road (depending on version).  
The system should be deactivated in the  
following situations:  
– Driving with a "space-saver" type spare  
wheel.  
– When towing or with a bicycle carrier  
attached to a towing device, particularly when  
Operation  
As soon as the system identifies a risk of  
involuntarily crossing one of the lane markings  
detected on the ground or a lane boundary  
(e.g. grass verge), it performs the trajectory  
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