2017 Citroen GRAND C4 PICASSO RHD Owner's Manual

175
Collision Risk Alert and Active Safety Brake
This system includes three functions:
- C ollision Risk Alert (alert if there is a risk of
collision),
-

I
ntelligent emergency braking assistance,
-

A
ctive Safety Brake (automatic emergency
b r ak ing).
Collision Risk Aler t: it warns the driver if
their vehicle is at risk of collision with the
vehicle in front or a pedestrian present in
their traffic lane.
Intelligent emergency braking assistance:
it completes the braking action taken by the
driver if this is inadequate.
Active Safety Brake: it inter venes following
the aler t if the driver does not react quickly
enough and does not operate the vehicle's
brakes.
If the driver fails to act, the system
contributes towards avoiding a collision or
limiting its severity by reducing the speed
of your vehicle. This system is designed to assist the
driver and improve road safety.
It is the driver's responsibility to
continuously monitor the state of
the traffic, observing the driving
regulations.
This system does not avoid the need for
vigilance on the part of the driver.
The vehicle is fitted with a radar located in the front bumper and a camera at the top of the
windscreen.
Conditions for activation and operation
The system is active from about 4 mph (7 km/h)
and is deactivated below about 3 mph (5 km/h).
It takes account of:
-

v
ehicles running in the same direction or
stationary,
-

p
edestrians present in the traffic lane
(bicycles, motorcycles, animals and objects
on the road are not necessarily detected).
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Limits of operation
In the following cases, it is recommended
that the system be deactivated in the vehicle
configuration menu:
-
w
hen towing a trailer or caravan,
-

w
hen carrying long objects on roof bars or
a roof rack,
-

b
efore using an automatic car wash, with
the engine running,
-

b
efore placing the vehicle on a rolling road
in a workshop,
-

w
hen the vehicle is being towed, with the
engine running,
-

w
hen a "space-saver" type spare wheel is
fitted (depending on version),
-

f
ollowing impact damage to the windscreen
close to the detection camera,
-

i
f the front bumper has been damaged,
-

i
f the brake lamps are not working.Because of limits in the operation of the
system, it is possible that warnings are
not given, are given too late or seem
unjustified.
Consequently, the driver must always
remain attentive and able to react at any
time to avoid an accident. Where the speed of your vehicle is too
high approaching another vehicle, the
first level of alert may not be displayed:
the level 2 alert may be displayed
di r e c t l y.
Important:
the level 1 alert is never
displayed if the " Close" threshold has
been selected.
Collision Risk Alert
Depending on the degree of risk of collision
detected by the system and the alert threshold
chosen by the driver, different levels of alert can be
triggered and displayed in the instrument panel.
Level 1: visual alert only, signalling
to you that the vehicle in front is very
close.
The message " Vehicle close" is
displayed.
This level of alert is based on the inter-vehicle
time between your vehicle and the vehicle in
front.
Level 2: visual and audible alert,
warning you that a collision is
imminent.
The message " Brake!" is displayed.
This level of alert is based on the time before
collision. It takes account of the vehicle
dynamics, the speed of your vehicle and the
one in front, the environmental conditions, the
operation of the vehicle (cornering, pedals
pressed, etc.) to trigger the alert at the best
moment.
Modifying the alert trigger
threshold
This threshold determines how you wish to be
warned of the presence of a vehicle moving
or stationary in front of you, or a pedestrian
present in your traffic lane.
The current threshold can be modified only via
the Driving menu in the touch screen.
You can select one of three thresholds:
-
"Distant ",
-
"Normal ",
-
"Close ".
The last threshold selected is kept in memory
when the ignition is switched off.
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177
Active Safety Brake
This function, also called automatic emergency
braking, aims to reduce the speed of impact or
avoid a frontal collision by your vehicle where
the driver fails to react.
Using a radar and a camera, this function acts
on the vehicle's braking system.Operation of the function may be felt by
slight vibration in the brake pedal.
If the vehicle comes to a complete stop,
the automatic braking is maintained
for
1 to 2 seconds.
With a manual gearbox, in the event
of the automatic emergency braking
bringing the vehicle to a complete stop,
the engine may stall.
With an automatic gearbox, in the event
of the automatic emergency braking
bringing the vehicle to a complete stop,
keep the brake pedal pressed to stop
the vehicle moving off again.
If the radar and the camera have
confirmed the presence of a vehicle
or a pedestrian, this warning lamp
flashes once the function is acting on
the vehicle's brakes.
Important
: if operation of the
automatic emergency braking is
triggered, you should take back
control of your vehicle and brake
with the pedal to add to or finish the
automatic braking action.
The driver can take back control of the vehicle
at any time by sharply turning the steering
wheel and/or pressing the accelerator pedal.
The triggering of the braking may be
adjusted according to the driver's
driving actions (such as steering wheel
movements, actions on the accelerator
pedal, etc.).
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Special features of the function
The speed of the vehicle must be between
3 mph (5 km/h) and 87 mph (140 km/h) when a
moving vehicle is detected.
The speed of the vehicle must not be higher
than 50 mph (80 km/h) when a stationary
vehicle is detected.
The speed of the vehicle must not be higher
than 37 mph (60 km/h) when a pedestrian is
detected.
The ESC system must not be faulty.
The ASR function must not be deactivated.
The seat belts of all occupants must be
fastened.
Driving at a steady speed on fairly straight
roads is required.
Following an impact, the function is put
out of service automatically, consult
a CITROËN dealer or a qualified
workshop to have the system checked.
Intelligent emergency
braking assistance
If the driver brakes, but not sufficiently to
avoid a collision, this system will complete the
braking, within the limits of the laws of physics.
This assistance will only be provided if you
press the brake pedal.
Deactivation / Activation
By default, the system is automatically
activated at every engine start.
The system can be deactivated or activated in
the vehicle settings menu in the screen. Deactivation of the system is
signalled by the illumination of this
indicator lamp, accompanied by the
display of a message.
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179
Operating fault
In the event of a fault, you are alerted
by the illumination of this warning
lamp, accompanied by the display of
a message and an audible signal.
If the front bumper is to be repainted,
contact a CITROËN dealer or a
qualified workshop. Certain types of
paint could inter fere with the operation
of the radar. Clean the windscreen regularly,
particularly the area in front of the
camera.
Do not allow snow to accumulate on
the bonnet or roof of the vehicle as this
could mask the camera's view.
Clean the front bumper, removing mud,
snow, ... There may be inter ference in the
operation of the camera or it may not
work at all in the following situations:
-

p
oor visibility (inadequate street
lighting, falling snow, heavy rain,
dense fog, ...),
-

d
azzle (headlamps of an
approaching vehicle on the other
side of the road, low sun, reflection
on a wet road, leaving a tunnel,
alternating between light and
shade, ...),
-

c
amera or radar masked (mud,
frost, snow, ...).
In these situations, detection
per formance may be reduced.
Check that the sensors (camera and radar) are
not covered by dirt, mud, frost, snow...
If the problem persists, contact a CITROËN
dealer or a qualified workshop to have the
system checked.
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180
Assisted Lane Departure Warning System
Using a camera placed at the top of the windscreen to identify lane markings on the ground, this system corrects the trajectory of the vehicle while
alerting the driver if it detects a risk of involuntary crossing of a line.
This system is particularly useful on motor ways and main roads.This system is a driving aid which cannot,
in any circumstances, replace the need
for vigilance on the part of the driver.
The driver remains responsible for the
vehicle in all circumstances. The system
helps the driver only when there is a risk
of the vehicle involuntarily wandering
from the lane it is being driven on. It does
not manage the safe driving distance, the
speed of the vehicle or the brakes.
The driver must hold the steering wheel in
a way that allows control to be taken back
in circumstances where the system is not
able to intervene (where there are no lane
markings, for example).
It is necessary to observe the driving
regulations and take a break every two
hours.
Operation
Conditions for operation
The speed of the vehicle must be between 40
and 112 mph (65 and 180 km/h).
The carriageway must have at least one lane
marking (solid or broken) on the ground.
The driver must hold the wheel with both
hands.
The change of trajectory is not accompanied by
operation of the direction indicators.
The ESC system must be activated. Once the system identifies a risk of the vehicle
involuntarily crossing one of the lane markings
detected, it makes the correction to the
trajectory necessary to return the vehicle to its
initial path.
The driver will then notice a turning movement
of the steering wheel.
This warning lamp flashes during
trajectory correction.
If the driver wishes to maintain the
trajectory of the vehicle, they can
prevent the correction by keeping a firm
grip on the wheel (during an avoiding
manoeuvre, for example).
The correction is interrupted if the
direction indicators are operated.
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181
However, with the "Blind Spot Monitoring
System" activated, if the driver starts changing
lane and another vehicle is detected in the
vehicle's blind spot, the system will correct
the trajectory of the vehicle even though the
direction indicators are on.
For more information on the Blind Spot
Monitoring System, refer to the corresponding
section. If the system detects that the driver is
not holding the wheel firmly enough
during an automatic correction of
trajectory, it interrupts the correction.
An alert is triggered to encourage
the driver to take back control of the
vehicle.
Activation / Deactivation
Activation / deactivation of the system is done
in the Driving
menu of the touch screen.
Select the " Driving function " tab then "Help
with changing lane ".
The state of the system stays in memory when
the ignition is switched off.
While the direction indicators are on and for
a few seconds after switching them off, the
system considers that any change of trajectory
is voluntary and no correction is triggered
during this period.
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Driving situations and associated alerts
To benefit from all of the information needed in the instrument panel, you must first select the "DRIVING" display mode.
The table below describes the alerts and messages displayed according to the driving situation.
The display of these alerts is not sequential.
State of
the systemWarning
lampAssociated display
and message
Comment
OFF System deactivated.
ON System active, conditions not met:
-

s
peed below 40 mph (65 km/h),
-

n
o lane marking recognised,
-

ES
C deactivated or operation triggered,
-

"
dynamic" driving.
ON Automatic deactivation / standby of the system (for example: detection of a trailer, use of the
"space-saver" spare wheel provided with the vehicle).
ON Detection of lane markings.
Speed above 40 mph (65 km/h).
ON The system corrects the trajectory on the side concerned or the risk of involuntary crossing is
detected (orange line).
ON
"Take back the wheel". -

I
f, during correction, the system detects that the driver has not held the wheel for a few
seconds, it interrupts the correction and returns control to the driver.
-

D
uring correction of the trajectory, the system determines that the correction will not be
enough and a solid line is crossed: the driver is warned that they must complete the correction
of trajectory.
Driving