CITROEN C4 Handbook page 132

Driving
Function status
ON
Operating limits
The system goes into standby automatically in
the following cases:
– ESC deactivated or operation triggered.
– Speed below 40 mph (65 km/h) or greater
than 112 mph (180 km/h).
– Electrical connection to a trailer.
– Use of a"space-saver" spare wheel detected
(as detection is not immediate, deactivation of
the system is recommended).
– Dynamic driving style detected, pressure on
the brake or accelerator pedal.
– Driving over lane markings.
– Activation of the direction indicators.
– Crossing the inside line on a bend.
– Driving on a tight bend.
– Inactivity by the driver detected during
correction.
– Narrow lane detected.
130
Display Comments
If, while correcting the trajectory, the system determines that the correction will not be
enough and that a solid line will be crossed: the driver is warned that they must provide
additional trajectory adjustment.
If the steering wheel is not held properly, an audible warning sounds, accompanied by
a message, until the trajectory correction is completed or the driver has grasped the
"Hold the steering steering wheel correctly.
wheel" or "Stay in lane" The duration of audible warnings will increase if multiple corrections are performed
(depending on version) in quick succession. The warning will become continuous, persisting until the driver
responds.
The following situations may interfere
with the operation of the system or
prevent it from working:
– Insufficient contrast between the road
surface and the side of the road (e.g. shade).
– Lane markings worn, hidden (snow, mud)
or multiple (roadworks, etc.),
– Close proximity to the vehicle in front (lane
markings may not be detected).
– Roads that are narrow, winding.
Risk of undesirable operation
The system should be deactivated in the
following situations:
– When changing a wheel or working near a
wheel.
– Towing or with a bicycle carrier on a towing
device, especially with trailer not plugged in or
not approved.
– Road in poor condition, unstable or with very
poor grip (risk of aquaplaning, snow, ice).
– Adverse weather conditions.
– Driving on racing circuits.
– Driving on a rolling road.
Deactivation/Activation
By default, the system is automatically activated
at every engine start.
With the dashboard button