2022 CITROEN C4 PICASSO brake

156
The adaptive cruise control uses only engine
braking to slow the vehicle. Consequently the
vehicle loses speed slowly, as when releasing
the accelerator pedal.
The system is paused automatically:
-
i
f the vehicle in front slows down too much
or too suddenly, and the driver does not
brake,
-

i
f a vehicle comes between your vehicle and
the vehicle in front.
The regulation range is limited to a maximum
d ifference of 19 mph (30 km/h) between the
cruise speed setting and the speed of the
vehicle in front. Above this, the system goes into
pause if the safety distance becomes too short.
Poor weather conditions (very heavy
rain, accumulation of snow in front of the
radar) may hinder the operation of the
system, with the display of the operating
fault message "SYSTEM INACTIVE:
Reduced visibility". The function remains
unavailable until the message disappears.
Since the radar detection range is relatively
narrow, it is possible that the system cannot
detect:
-

v
ehicles of reduced width, such as
motorcycles, for example, -

v
ehicles not running in the middle of the
lane,
When the adaptive cruise control is
automatically paused, it can only be
reactivated when safe conditions are
restored. The message "Activation
not possible, conditions unsuitable"
is displayed while reactivation is not
possible.
When the conditions allow, it is
recommended that the function be
reactivated by pressing button 2

or 3,

which will make the current speed of your
vehicle the new cruise speed setting,
rather than by pressing button 4 (on /
pause) which reactivates the cruise control
using the old cruise speed setting, which
may be very different from the current
speed of your vehicle.
Operating limits
- if the system does not slow the vehicle enough to continue to maintain a safe
distance, for example when descending
a
steep hill.
-
v

ehicles entering a

corner,
-

v
ehicles changing lane at the last moment.
The cruise control does not take account of:
-
s

tationary vehicles,
-

v
ehicles driving in the opposite direction.
Malfunction
In the event of a malfunction of the adaptive
c ruise control system, you are warned by an
audible signal and the display of the message
"Driving aid functions fault".
Have the system checked by a
CITROËN
dealer or a
qualified workshop.
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158
Primarily designed for driving on main
roads and motor ways, this system only
works on moving vehicles, driving in the
same direction as your vehicle.
Principle of operation
The system automatically adapts the speed of
your vehicle to that of the vehicle in front, to
maintain a


constant distance.
If the vehicle in front is driving more slowly, the
system slows or even stops your vehicle, using
engine braking and the braking system (for
versions fitted with an automatic gearbox).
If the vehicle in front accelerates or changes
lane, the cruise control progressively
accelerates your vehicle to return to the
programmed speed.
If the driver operates a
direction indicator to
overtake a
slower vehicle, the cruise control
allows your vehicle to temporarily approach
the vehicle in front to assist the overtaking
manoeuvre, though never exceeding the
programmed speed.
The brake lamps illuminate as soon as
the braking system is activated with
deceleration of the vehicle. This system is a
driving aid that cannot,
in any circumstances, replace the need to
obser ve speed limits and safety distances,
nor the need for vigilance on the part of
the driver.
Some vehicles present on the road may
not be properly seen or may be poorly
interpreted by the camera and/or radar
(e.g. a lorry), which may lead to a poor
assessment of the distances and lead to
the vehicle inappropriately accelerating or
braking.
The driver must be ready at all times
to retake control of their vehicle by
permanently holding both hands on the
steering wheel and keeping their feet near
the brake and accelerator pedals.
Steering mounted control
1. Select cruise control mode. 2.
Use the current speed as the speed
setting/decrease the speed setting.
3. Use the current speed as the speed
setting/increase the speed setting.
4. Pause/Resume cruise control.
5. Use the speed suggested by the Speed
Limit recognition and recommendation.
6. Display and adjustment of the
programmed inter-vehicle distance.
For more information on the Speed Limit
recognition and recommendation , refer to
the corresponding section.
Displays in the instrument
panel
7. Indication of the presence/absence of
a
target vehicle.
8. Indication of cruise control activation/
deactivation.
9. Value of the speed setting.
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159
10.Indication that vehicle is held stationary
(versions fitted with an automatic
gearbox).
11. Speed suggested by the Speed Limit
recognition and recommendation.
Switching on
To switch on the cruise control
F
W ith the engine running, turn the wheel
1
to the " CRUISE " position. The system is
paused (grey display). With a
manual gearbox
With the speed of the vehicle between 19 and
99 mph (30 and 160 km/h):
F
W
hen the vehicle is moving, press one of
the buttons 2 or 3
: the current speed of your
vehicle becomes the cruise speed setting.
The cruise control starts operating (displayed
in green).
With an automatic gearbox
Mode D or M must be selected.
With the speed of the vehicle between 19 and
112 mph (30 and 180 km/h):
Remembering the settings
Switching off the ignition cancels any speed
setting value chosen by the driver.
By default, the inter-vehicle distance is set
at " Normal " (2 dashes). Other wise, the last
setting made will be used when switching on
the system.Pause
• When changing from mode D to N with an automatic gearbox.
-

o
r automatically:
•

I
f the ESC system is activated, for safety
reasons.
•

W
hen the speed of the vehicle falls below
19
mph (30 km/h) with a manual gearbox.
When the cruise control is paused, it
can only be reactivated when all of the
safety conditions are met. The message
"Activation not possible, conditions
unsuitable" is displayed while reactivation
is not possible.
As soon as a

vehicle is detected, the symbol
7

is filled with the colour associated with the
cruise control mode. By default, the symbol 7

is
e m pt y.
When the cruise control is in operation, the
symbols 7

and 8

are displayed in green. By
default, they are displayed in grey.
Reactivating the function
Versions fitted with a manual gearbox
To reactivate the function, the driver must
accelerate to reach at least 19
mph (30 km/h),
then press one of the buttons 2 , 3
or 4.
Versions fitted with an automatic gearbox
Following braking of the vehicle bringing it to
a
complete stop, the system holds the vehicle
stationary; the cruise control is paused.
12 .
Inter-vehicle distance setting.
13. Position of vehicle detected by the radar.
This information is visible in the instrument
panel in "DRIVING" display mode. F

W

hen the vehicle is moving, press one of
the buttons 2

or 3
: the current speed of your
vehicle becomes the cruise speed setting.
The cruise control can be paused manually by:
-

a

ction by the driver:
•

O

n the button 4 (Pause).
•

O

n the brake pedal.
•

O

n the electric parking brake control.
•

O

n the clutch pedal, by pressing and
holding for more than 5

seconds.
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Driving

160
As a safety measure, wait until the current
s peed approaches the speed setting to
reactivate the function by pressing button 4 .
Modification of the speed
setting
With the engine running and cruise control on
(green), you can modify the speed setting.
Modification from the current
speed
F By successive short presses on button 2 or
3 , to lower or raise the setting in steps of +
or – 1
mph (km/h),
F

B
y a maintained press on button 2 or 3, to
lower or raise the setting in steps of + or –
5
mph (km/h). Take care: pressing and holding button
2
or 3 results in a rapid change in the
speed of your vehicle.
Modification from the
Speed Limit recognition and
recommendation system
F The suggested speed is displayed in the instrument panel.
F

M
ake an initial press on button 5 ; a
message is displayed to confirm the
memorisation request.
F

P
ress button 5 again to save the suggested
speed.
The speed displays immediately in the
instrument panel as the new speed setting.
For more information on the Speed Limit
recognition and recommendation , refer to
the corresponding section.
The driver should press the accelerator pedal
to move off, then reactivate the system above
19

mph (30

km/h) by pressing button 2
, 3

or 4
.
If the driver takes no action following this
immobilisation, the electric parking brake is
applied automatically after a

while (approx. five
minutes).
As a precaution, it is recommended
that you select a
cruise speed close to
the current speed of your vehicle, so
as to avoid any sudden acceleration or
deceleration of the vehicle.
Modification of the programmed
inter-vehicle distance
Engine running and with the wheel at the
" CRUISE " position:
F

P
ress button 6 to display the selection
screen for inter-vehicle distance.
F

B
y pressing button 6 repeatedly, cycle
through the predefined settings.
The selection screen closes after a
few
seconds.
The modification is then accepted.
This setting remains in memory, whatever the
state of the system and when the ignition is
switched off.
The selection also applies to the stopping
distance (versions with EAT6
and
EAT8
automatic gearbox).
Three threshold settings are suggested for the
inter-vehicle distance:
-
"
Distant " (3 dashes),
- "
Normal " (2 dashes),
- "
Close " (1 dash).
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163
Indicator lampDisplay Associated message Comments
or
(grey)/(green) according to
the inter-vehicle
distance selected and the actual
distance from the target vehicle "Cruise control paused"
(for a
few seconds)The system has brought
the vehicle to a
complete
stop and is holding it
immobilised.
The driver must
accelerate to move off
again.
The cruise control
remains paused until the
driver reactivates it.
Following braking of the vehicle bringing it to
a
complete stop, the system holds the vehicle
stationary; the cruise control is paused.
The driver should press the accelerator
pedal to move off, then reactivate the
system by pressing one of buttons 2 , 3
or
4 . If the driver takes no action following this
immobilisation, the electric parking brake is
applied automatically after a
while (approx. five
minutes).
Operating limits
The system cannot exceed the limits of the
laws of physics.
The system cannot deal with certain situations
and the driver has to take back control of the
vehicle. Cases of non- detection by the radar:
-

Pe
destrians, some cyclists, animals.
-
S
tationary vehicles (traffic jam, breakdown,
e t c .) . When the driver must suspend the cruise
control system:
Cases where the driver is urged to take
back control immediately:
-

E
xcessively sharp deceleration of the
vehicle in front of you.
Versions fitted with an automatic gearbox
-
V
ehicles in a tight bend.
-
W
hen approaching a

roundabout.
-
W
hen following a narrow vehicle.
Reactivate cruise control when conditions
permit.
-
V
ehicles crossing your lane.
-
O
ncoming vehicles.
-
W
hen a vehicle cuts in sharply between
your vehicle and the one in front.
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Driving

164
The system must not be activated in the
following situations:
-
W
hen the "space-saver" spare wheel is
being used (depending on version).
-
W

hen towing.
-

F
ollowing an impact on the front bumper.
Be particularly careful:
-

W
hen motorcycles are present and
when there are vehicles staggered
onto the traffic lane.
-

W
hen you enter a tunnel or cross
a
bridge. The cruise control operates by day and
night, in fog or moderate rainfall.
However, it is strongly recommended
that you always adapt your speed and
your safety distance from vehicles ahead
according to the driving conditions, the
weather and the road surface.
Use the cruise control only where
the driving conditions allow running
at a
constant speed and keeping an
adequate safety distance.
Do not activate the cruise control in urban
areas where pedestrians are likely to
cross the road, in heavy traffic, on winding
or steep roads, on slippery or flooded
roads, when there is snowfall, if the front
bumper is damaged or when the brake
lamps have failed.
In certain circumstances, it may not
be possible for the speed setting to be
maintained or even reached: loaded
vehicle, ascending a
steep hill, etc.The system is not intended for the
following situations:
-

t
he front end of the vehicle has been
modified (addition of long-range
headlamps, painting of the front
bumper),
-

d
riving on a racing track,
-

d
riving on a rolling road,
-

u
se of snow chains, non-slip covers or
studded tyres.
The use of mats not approved by
CITROËN may inter fere with the operation
of the cruise control.
To avoid any risk of jamming of the pedals:
-

e
nsure that the mat is secured
c o r r e c t l y,
-

n
ever fit one mat on top of another.
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165
Clean the front bumper regularly.
If the front bumper is to be repainted or
retouched, contact a CITROËN dealer
or a
qualified workshop. Certain types of
paint could inter fere with the operation of
the radar.
Malfunction
If the cruise control
malfunctions, dashes are
displayed instead of the
cruise control speed setting.
If this warning lamp comes
on, accompanied by an
alert message and an
audible signal, this confirms
a


malfunction.
The adaptive cruise control deactivates
automatically if the use of a "space-saver"
type spare wheel is detected or if there is
a

malfunction on the lateral brake lamps or
trailer brake lamps (for approved trailers).
The following situations may interfere with
the operation of the system or prevent it
from working:
-
p
oor visibility (inadequate street
lighting, falling snow, heavy rain, dense
f o g , e t c .),
-

d

azzle (headlamps of an oncoming
vehicle, low sun, reflections on a

damp
road, leaving a

tunnel, alternating
shade and light, etc.),
-

c

amera or radar masked (mud, frost,
snow, condensation, etc.).
In these situations, detection performance
may be reduced.
The message "SYSTEM INACTIVE:
Reduced visibility". is displayed to indicate
that the function is in standby. Have the system checked by a
CITROËN
dealer or a

qualified workshop.
Active Safety Brake with
Collision Risk Alert and
Intelligent emergency
braking assistance
The system allows:
- t he driver to be warned that their vehicle is
at risk of collision with the vehicle in front,
-

a c
ollision to be prevented, or its severity to
be limited, by reducing the vehicle's speed.
This system is a
driving aid that 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).
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Driving

167
In the following cases, deactivating the system
via the vehicle's configuration menu is advised:
-
t
owing a trailer,
-

c
arrying long objects on roof bars or roof
rack,
-
w

ith snow chains fitted,
-

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

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

t
owed vehicle, engine running,
-

d
amaged front bumper (version with radar),
-

f
ollowing impact to the windscreen close to
the detection camera. The system is automatically deactivated
after the use of the "space-saver" type
spare wheel is detected, or if a
fault with
the lateral brake lamps is detected.
It is possible that warnings are not given,
are given too late or seem unjustified.
Consequently, always stay in control of
your vehicle and be prepared to react at
any time to avoid an accident.
After an impact, the function automatically
stops operating. Contact a
CITROËN
dealer or a
qualified workshop to have the
system checked.
If the front bumper is to be repainted or
retouched, contact a
CITROËN dealer
or a
qualified workshop. Certain types of
paint could inter fere with the operation of
the radar.
Collision Risk Alert
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.
Modifying the alert trigger
threshold
This threshold determines how you wish
to be alerted of the presence of a moving
or stationary vehicle in front of you, or
a
pedestrian present in your traffic lane.
The current threshold can only be
modified via the touch screen's
Driving menu.
You can select one of three predefined
thresholds:
-
"Distant ",
-
"Normal ",
-
"Close ".
The last threshold selected is kept in memory
when the ignition is switched off.
Operation
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.
Clean the windscreen regularly,
particularly the area in front of the camera.
The internal sur face 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.
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Driving