Parking Sensors - CITROEN C4 Spacetourer Handbook

Driving
Using a camera placed at the top
of the windscreen, the system
assesses the driver's level of
vigilance by identifying variations
in trajectory compared to the lane
markings.
This system is particularly suited to fast roads
(speed higher than 40 mph (65 km/h)).
When the system interprets the behaviour of
the vehicle as indicating a certain fatigue or
inattention threshold on the part of the driver, it
triggers the first level of alert.
The driver is then alerted by the message
"Take care!", accompanied by an audible
signal.
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After three first level alerts, the system triggers
a new alert with the message "Take a break!",
accompanied by a more pronounced audible
signal.
In certain driving conditions (poor road
surface or strong winds), the system may
give alerts independent of the driver's
level of vigilance.
The following situations may interfere with
the operation of the system or prevent it
working:
- poor visibility (inadequate lighting of
the roadway, falling snow, heavy rain,
dense fog, etc.),
- dazzle (headlamps of an oncoming
vehicle, low sun, reflections on a damp
road, leaving a tunnel, alternating
shade and light, etc.),
- windscreen area located in front of the
camera dirty, misted up, frost-covered,
snow-covered, damaged or covered by
a sticker,
- lane markings absent, worn, hidden
(snow, mud) or multiple (roadworks,
etc.),
- close to the vehicle ahead (lane
markings not detected),
- roads that are narrow, winding, etc.
Clean the windscreen regularly,
particularly the area in front of the camera.
The internal surface of the windscreen can
also become misted around the camera.
In humid and cold weather, demist the
windscreen regularly.
Do not allow snow to accumulate on the
bonnet or roof of the vehicle as this could
conceal the detection camera.
Clean the front bumper, especially around
the radar, removing mud, snow, etc.

Parking sensors

Using sensors located in the bumper, this
function warns of the proximity of obstacles
(e.g. pedestrian, vehicle, tree, barrier) entering
their field of detection.