2020 CITROEN C4 lane assist

11 5
Driving
6Automatic suspension
Suspension of the system is accompanied by a
specific audible signal.
–
T
riggering of the ESC system.
–

Insufficient lane detection. In this case, the
Active lane departure warning system function
can take over

, and the system will reactivate itself once the operating conditions are met
again.Paused by the driver
– Travelling outside the lane limits.
–
T oo tight a grip on the steering wheel or
dynamic action on the steering wheel. –

Action on the brake pedal (resulting in a pause
until cruise control is reactivated) or accelerator
pedal (suspension for as long as the pedal is
depressed).
–
Pausing of the Adaptive cruise control system.
–

Deactivation of the
ASR system.
Driving situations and related alerts
The tables below describe the displays associated with the main driving situations. The actual order of display of these alerts may be different.
The locations of these symbols vary according to the display mode select\
ed on the instrument panel and whether or not the head-up display is act\
ivated (if
fitted to vehicle).
Symbols Comments

(grey)

Cruise control paused.
Lane positioning assist not selected.


(green)

Cruise control on.
Lane positioning assist not selected.

11 6
Driving
SymbolsComments

(green)

(green)

(green lines) Highway Driver Assist system activated.
Lane positioning assist is operating normally (steering wheel correctio\
n active).

(grey)

(grey)

Highway Driver Assist system paused by the driver.

11 7
Driving
6SymbolsComments

(grey)
(green)

Highway Driver Assist system activated.
All the operating conditions for lane positioning assist have not been m\
et.


(grey)

(green)

Highway Driver Assist system suspended.
Cruise control and lane positioning assist are suspended.
Messages Driving situations
"Keep your hands on the steering wheel " Prolonged driving without holding the steering wheel, holding it imprope\
rly or without
applying any force.
"Hold the steering wheel "Actual or imminent loss of lane positioning assist.
"Take back control" Simultaneous loss of cruise control and lane positioning assist.

121
Driving
6The system is automatically reactivated every
time the ignition is switched on.
Malfunction
In the event of a malfunction,
these warning lamps light up 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.
Blind spot monitoring
For more information, refer to the
General recommendations on the use
of driving and manoeuvring aids .


This system warns the driver of a potential
danger posed by the presence of another vehicle
(car, lorry, motorcycle) in the vehicle's blind
spots (areas hidden from the driver's field of
vision) using sensors located on the sides of the
bumpers.


The warning is given by a fixed warning lamp
that appears in the door mirror on the side in
question:
–

immediately
, when being overtaken;
–

after a delay of about one second, when
overtaking a vehicle slowly

.
Activation/Deactivation
It is set via theDriving/Vehicle touch
screen menu.
When starting the vehicle, the
warning lamp
comes on in each mirror to indicate that the
system is activated.
The status of the system is memorised when the
ignition is switched off.
The system is automatically deactivated when towing with a towing device
approved by CITROËN.
Operating conditions
– All vehicles are moving in the same direction
and in adjacent lanes.
–

The speed of your vehicle must be between
7

and 87 mph (12 and 140 km/h) (versions without Park Assist) or between 19
and 87 mph
(30 and 140 km/h) (versions with Park Assist).
–
When overtaking a vehicle, the speed
difference is less than 6
mph (10 km/h).
–
When overtaken by a vehicle, the speed
difference is less than 16
mph (25 km/h).
–
T
raffic is flowing normally.
–
Overtaking a vehicle over a certain period of
time and the vehicle being overtaken remains in
the blind spot.
–

Y
ou are driving on a straight or slightly curved
road.
–
Y
our vehicle is not pulling a trailer, a caravan,
etc.
Operating limits

123
Driving
6

The vehicle has a multifunction camera located
at the top of the windscreen and, depending on
version, a radar located in the front bumper.
This system does not replace the need for vigilance on the part of the driver.
This system is designed to assist the driver
and improve road safety.
It is the driver's responsibility to continuously
monitor traffic conditions in accordance with
applicable driving regulations.
As soon as the system detects a potential obstacle, it prepares the braking
circuit in case automatic braking is needed.
This may cause a slight noise and a slight
sensation of deceleration.
Deactivation/Activation
By default, the system is automatically activated
at every engine start.
The settings are changed via the Driving/Vehicle touch screen menu.
Deactivation of the system is signalled by
the illumination of this warning lamp,
accompanied by the display of a message.
Operating conditions and
limits
Vehicle moving forward.
ESC system operational.
Seat belts fastened for all passengers.
Stabilised speed on roads with few bends.
In the following cases, deactivating the system
via the vehicle's configuration menu is advised:
–

T
owing a trailer.
–

Carrying long objects on roof bars.
–


V
ehicle with snow chains fitted.
–

Before using an automatic car wash, with the
engine running.
–


Before placing the vehicle on a rolling road in
a workshop.
–


T
owed vehicle, engine running.
–

Following
an impact to the windscreen close to
the detection camera.
The system is automatically deactivated when the use of certain types of
"space-saver" spare wheel (smaller diameter)
is detected, or if a fault with the brake pedal
switch or at least two brake lamps is detected.
It can be dangerous to drive if the brake
lamps are not in perfect working order.
It is possible that warnings are not given,
are given too late or seem unjustified.
The driver must always stay in control of the
vehicle and be prepared to react at any time
to avoid an accident.
Following an impact, the system is
automatically deactivated.
Have it checked by a CITROËN dealer or a
qualified workshop.
Collision Risk Alert
This function warns the driver that their vehicle
is at risk of a collision with the vehicle in front, or
with a pedestrian or cyclist present in their traffic
lane.
Modifying the alert trigger threshold
This trigger threshold determines the sensitivity
with which the function warns of the risk of
collision.
The threshold is set via theDriving/Vehicle touch screen menu.
►

Select one of the three pre-defined
thresholds: "Far", "Normal" or "Close".
The last threshold selected is memorised when
the ignition is switched off.
Operation
Depending on the degree of risk of collision
detected by the system and the alert trigger
threshold chosen by the driver, several different

126
Driving
The system assesses the driver's level of alertness, fatigue and distraction by
identifying trajectory changes in relation to the
lane markings.
To do this, the system uses a camera, placed on
the upper part of the windscreen.
This system is particularly suited to fast roads
(speed higher than 43 mph (70
km/h)).
At a first alert level, the driver is warned by the
message "Be vigilant!", accompanied by an
audible signal.
After three first-level alerts, the system triggers
a further alert with the message " Dangerous
driving: 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 from working:
–

lane markings absent, worn, hidden (snow
,
mud) or multiple (roadworks);
–

close to the vehicle ahead (lane markings
not detected);
–


roads that are narrow
, winding, etc.
Parking sensors
For more information, refer to the
General recommendations on the use
of driving and manoeuvring aids .


This system detects and signals the proximity of
obstacles (e.g.
pedestrian, vehicle, tree, barrier)
using sensors located in the bumper.
Rear parking sensors
► Engage reverse gear to start the system
(confirmed by an audible signal).
The system is switched off when reverse gear is
disengaged.
Audible assistance

The system signals the presence of obstacles
within the sensors’ detection zone.
The proximity information is given by an
intermittent audible signal, the frequency of
which increases as the vehicle approaches the
obstacle.
When the distance between the vehicle and
the obstacle becomes less than about thirty
centimetres, the audible signal becomes
continuous.
The sound emitted by the speaker (right or
left) indicates the side on which the obstacle is
located.
Adjusting the audible signalDepending on version, with
CITROËN Connect Nav, pressing
this button opens the window for adjusting the
volume of the audible signal.
Visual assistance

This supplements the audible signal, without
taking account of the vehicle's trajectory, by
displaying bars on the screen that represent the
distance between the obstacle and the vehicle
(white: more distant, orange: close, red: very
close).

240
Alphabetical index
Instrument panel, LCD 9
Internet browser
218, 221
ISOFIX mountings

78, 81–82
J
Jack 165–166, 169, 224
Jump starting
176
K
Key 28–29, 32–33
Key, electronic
30–31
Keyless Entry and Starting

28, 30–31, 87–88
Key not recognised

88–89
Key with remote control

28, 86
Kit, hands-free

201–202, 226
Kit, puncture repair

166
Kit, temporary puncture repair

165–168
L
Labels, identification 185
Lamp, boot
56
Lamps, parking

58
Lamps, rear

174
Lams with Full LED technology

61
Lane assist

109, 113–115
Lane departure warning active

11 8
Leather (care) 163
LEDs - Light-emitting diodes
58, 172, 174
Level, AdBlue®

158
Level, brake fluid

157
Level, Diesel additive

158
Level, engine coolant

19, 157
Level, engine oil

19, 156
Levels and checks

155–157
Level, screenwash fluid

63, 157
Light-emitting diodes - LEDs

58, 172, 174
Lighting, cornering

61
Lighting dimmer

23
Lighting, exterior

57, 60
Lighting, guide-me home

29, 59–60
Lighting, interior

55
Lighting, mood

55
Lighting, welcome

59
Loading

152–153
Load reduction mode

154
Locking

29, 31
Locking from the inside

32
Locking the doors

32
Low fuel level

137
Lumbar

41
M
Mains socket (domestic network) 141
Maintenance (advice)
139, 162
Maintenance, routine

102, 158–160
Manoeuvring aids (recommendations)

101
Map reading lamps 55
Markings, identification
185
Massage function

41
Mat

54, 102
Menu, main

26
Menus (audio)

197–198, 210–211
Menu short cuts

26
Messages

228
Messages, quick

228
Minimum traction battery charge
level (Electric)

21
Mirror, rear view

43
Mirrors, door

43, 51, 121
Mirror, vanity

52
Misfuel prevention

138
Mobile application

27, 51, 148
Motor, electric

89, 156, 184
Mountings, ISOFIX

78, 81–82
Multimedia support

52
N
Navigation 215–217
Navigation, connected
218–220
O
Obstacle detection 126
Oil change
156
Oil consumption

156