2021 CITROEN C4 CACTUS brakes

9
List of warning and indicator lamps
Warning/indicator lampState Cause Action/Observations
Red warning/indicator lamps
STOPFixed, associated with another
warning lamp, accompanied
by the display of a message
and an audible signal. Indicates a serious fault with the
engine, braking system, power
steering, automatic gearbox or a
major electrical fault. Carry out (1) and then (2).
Engine oil
pressure Fixed.
There is a fault with the engine oil
lubrication circuit. Carry out (1) and then (2).
Brakes Fixed. The brake fluid level has dropped
significantly. Carry out (1), then top up with brake fluid
that complies with the manufacturer's
recommendations. If the problem persists,
carry out (2).
+ Brakes
Fixed, associated with the
ABS warning lamp. The electronic brake force
distribution (EBFD) system has a
fault. Carry out (1) and then (2).
Parking brake Fixed. The parking brake is applied or not
properly released.
Maximum
coolant
temperature Fixed.
The temperature of the cooling
system is too high. Carry out (1), then wait until the engine
has cooled down before topping up to the
required level if necessary. If the problem
persists, carry out (2).
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Instruments

15
Warning/indicator lampState Cause Action/Observations
Collision Risk
Alert/Active
Safety Brake Flashing.
The system is operating. The vehicle brakes briefly so as to reduce the
speed of collision with the vehicle ahead.
Fixed, accompanied by a
message and an audible
signal. The system has a fault.
Carry out (3).
Collision Risk
Alert/Active
Safety Brake Fixed, accompanied by a
message.
The system has been deactivated via
the vehicle configuration menu.
Dynamic
stability control
(DSC/ASR) Flashing.
The DSC/ASR adjustment is
activated if there is a loss of grip or
trajectory.
Fixed. The DSC/ASR system has a fault. Carry out (3).
Dynamic
stability control
(DSC/ASR) Fixed.
The DSC/ASR is deactivated. Press the button to activate the DSC/ASR.
The DSC/ASR system is activated
automatically when the vehicle is started.
If the system is deactivated, it is reactivated
automatically once a speed of around 31
mph
(50 km/h) is reached.
(1 ) : You must stop as soon as it is safe to do so and switch off the ignition.
(2): Contact a CITROËN dealer or a qualified workshop.
(3) : Go to a CITROËN dealer or a qualified workshop.
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Instruments

72
Electronic stability control
(ESC)
Electronic stability control integrating the
following systems:
-
a
nti-lock braking system (ABS) and
electronic brake force distribution (EBFD),
-
em

ergency braking assistance (EBA),
-

w
heel anti-slip regulation (ASR) or traction
control,
-
d

ynamic stability control (DSC).
Definitions
Anti-lock braking system (ABS)
and electronic brake force
distribution (EBFD)
This system improves the stability and
manoeuvrability of your vehicle when braking and
contributes towards improved control on corners, in
particular on poor or slippery road sur faces.
The ABS prevents wheel lock in the event of
emergency braking.
The electronic brake force distribution system (EBFD)
manages the braking pressure wheel by wheel.
Emergency braking assistance
(EBA)
In an emergency, this system permits the
optimum braking pressure to be reached
more quickly, therefore reducing the stopping
distance.
It is triggered in relation to the speed at which
the brake pedal is pressed. The effect of this is
a reduction in the resistance of the pedal and
an increase in braking efficiency.
Anti-slip regulation (ASR)
The ASR system (also known as Traction
Control) optimises traction in order to limit
wheel slip by acting on the brakes of the driving
wheels and on the engine. It also improves
the directional stability of the vehicle on
acceleration.
Dynamic stability control (DSC)
If there is a difference between the path
followed by the vehicle and that required by
the driver, the DSC monitors each wheel and
automatically acts on the brake of one or more
wheels and on the engine to return the vehicle
to the required path, within the limits of the laws
of physics.
If you benefit from the Citroën Connect
Box offer with the SOS and assistance
pack included, there are additional
ser vices available to you in your personal
space, via the website for your country.
Anti-lock braking system
(ABS) and electronic brake
force distribution (EBFD)
The fixed illumination of this warning
lamp indicates that there is a fault
with the ABS.
If this warning lamp comes on, in
conjunction with the STOP
and
ABS warning lamps, an audible
signal and a message, this indicates
that the electronic brake force
distribution (EBFD) is faulty.
You must stop as soon as it is
safe to do so.
In both cases, have the system
checked by a CITROËN dealer or
a qualified workshop as soon as
possible.
When changing wheels (tyres and rims),
ensure that these are approved for your
vehicle.
Normal operation of the ABS may make
itself felt by slight vibration of the brake
pedal.
If you need to brake in an emergency,
press the brake pedal ver y firmly and
keep the pressure applied.
Safety

73
Dynamic stability control (DSC)
and anti-slip regulation (ASR)
Operation
These systems are activated automatically
every time the vehicle is started.
They come into operation in the event of a
problem with grip or trajectory.
Activation
These systems are activated automatically
every time the vehicle is started.
As soon as they detect a problem of grip or
trajectory, these systems act on the operation
of the engine and brakes.This is indicated by this warning
lamp flashing in the instrument
panel.
Deactivating the ASR
In exceptional conditions (starting a vehicle
which is bogged down, stuck in snow, on soft
ground, etc.), it may be advisable to deactivate
the ASR system, so that the wheels can move
freely and regain grip. F

I
n the Driving/Vehicle
menu
of the touch screen, select the
" Driving functions " tab, then
" Traction control".
Or depending on version:
F
T
urn the "
Grip control" knob to
this position.
Deactivation is signalled by the
illumination of this warning lamp,
accompanied by a message as
well as illumination of the knob
(depending on version).
The ASR system no longer acts on the
operation of the engine or the brakes in the
event of an involuntary change of trajectory.
Reactivating the ASR
The system is reactivated automatically each
time the ignition is switched back on or from
31 mph (50 km/h).
Below 31 mph (50 km/h), you can reactivate it
manually: F

I
n the Driving/Vehicle
menu
of the touch screen, select the
" Driving functions " tab, then
" Traction control".
Or depending on version:
F
T
urn the "
Grip control" knob to
this position.
Operating fault
The illumination of this warning
lamp, accompanied by an audible
signal and a message, indicates that
there is a fault with the system.
After an impact, have the system checked
by a CITROËN dealer or a qualified
workshop.
This is indicated by this warning
lamp flashing in the instrument
panel. It is however recommended that the system be
reactivated as soon as possible.
Contact a CITROËN dealer or a qualified
workshop to have the system checked.
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Safety

75
All road (mud, damp grass,
etc.)
This mode, when moving off, allows
considerable spin on the wheel with the least
grip to optimise clearing of the mud and regain
grip. At the same time, the wheel with the most
grip is controlled in such a way as to pass as
much torque as possible.
When moving, the system optimises wheel spin
to respond to the driver's requirements as fully
as possible.
(mode active up to 31 mph (50 km/h))F

P
lace the knob in this position.
Sand
This mode allows little spin on the two driving
wheels at the same time to allow the vehicle to
move for ward and limit the risks of getting stuck
in the sand.
(mode active up to 75 mph (120 km/h))F

P
lace the knob in this position.
Do not use the other modes on sand as
the vehicle may become stuck. You can deactivate the ASR
and DSC systems by turning
the knob to the "
OFF" position.
The ASR and DSC systems will no longer
have an effect on engine operation or
the brakes in the event of an involuntary
change of trajectory.
These systems are reactivated
automatically from 31 mph (50 km/h) or
every time the ignition is switched on.
Driving recommendations
Your vehicle is designed principally to
drive on tarmac roads but it allows you to
occasionally drive on other less passable
terrain.
However, it does not permit off-road
driving such as:
- c rossing and driving on terrain which
could damage the underbody or strip
away components (fuel pipe, fuel
cooler, etc.) due to obstacles or stones
in particular,
-

d
riving on terrain with steep gradients
and poor grip,
-

c
rossing a stream.
Seat belts
Front seat belts
The front seat belts are fitted with a
pretensioning and force limiting system.
This system improves safety in the front
seats in the event of a front or side impact.
Depending on the severity of the impact, the
pretensioning system instantly tightens the seat
belts against the body of the occupants.
The pretensioning seat belts are active when
the ignition is on.
The force limiter reduces the pressure of
the seat belt on the occupant's chest, thus
improving their protection.
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Safety

95
In case of towing
Driving with a trailer places greater
demands on the towing vehicle and
requires extra care from the driver.
Side wind
F Take into account the increased sensitivity to wind.
Cooling
Towing a trailer on a slope increases the
temperature of the coolant.
As the fan is electrically controlled, its cooling
capacity is not dependent on the engine speed.
F

T
o lower the engine speed, reduce your
speed.
The maximum towed load on an incline
depends on the gradient and the exterior
temperature.
In all cases, keep a check on the coolant
temperature.
F

I
f this warning lamp and the
STOP warning lamp come on,
stop the vehicle and switch off
the engine as soon as possible. New vehicle
Do not pull a trailer before having driven at
least 620 miles (1,000 kilometres).
Braking
Towing a trailer increases the braking distance.
To avoid overheating of the brakes, the use of
engine braking is recommended.
Ty r e s
F Check the tyre pressures of the towing
vehicle and of the trailer, observing the
recommended pressures.
Lighting
F Check the electrical lighting and signalling on the trailer and the headlamp beam height
of your vehicle.
For more information on Headlamp
beam height adjustment , refer to the
corresponding section.
Certain driving or manoeuvring aid
functions are automatically disabled if an
approved towing device is used. If the exterior temperature is high, it is
recommended that the engine be allowed
to idle for 1 to 2 minutes after the vehicle
comes to a stop, to facilitate its cooling.
Anti-theft protection
Electronic immobiliser
The key contains an electronic chip which has
a secret code. When the ignition is switched
on, this code must be recognised to enable
vehicle start.
This electronic engine immobiliser locks
the engine management system a moment
after the ignition is switched off and prevents
unauthorised engine starting.
In the event of a fault, you are
informed by the illumination of this
warning lamp, an audible signal and
a message in the screen.
In this case, your vehicle will not start; contact
a CITROËN dealer or a qualified workshop as
soon as possible.
For safety and theft protection reasons,
do not leave your electronic key in the
vehicle, even when you are close to it.
It is recommended that you keep it with
you.
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Driving

102
Starting the vehicle
F Apply the parking brake.
F Sel ect position P or N .
F

S
tart the engine.
If these conditions are not met, there is an
audible signal, accompanied by the display of a
warning message.
F

W
ith the engine running, press the brake
pedal.
F

R
elease the parking brake.
F

Sel
ect position R , D or M.
F

G
radually release the brake pedal.
The vehicle moves off immediately.
If position N is selected inadvertently while
driving, allow the engine to return to idle,
then select position D to accelerate.
If the temperature is below -23°C, the
engine should be left at idle for four
minutes, to ensure the correct operation
and longevity of the engine and gearbox. When the engine is running at idle, with
the brakes released, if position R
, D or
M is selected, the vehicle moves even
without the accelerator being pressed.
Do not leave children unsuper vised inside
the vehicle when the engine is running.
When carrying out maintenance with the
engine running, apply the parking brake
and select position P .
Automatic operation
F Select position D for automatic changing of
the six gears.
The gearbox then operates in auto-adaptive
mode, without any action needed from the
driver. It continuously selects the most suitable
gear according to the style of driving, the profile
of the road and the load in the vehicle.
For maximum acceleration without touching
the selector, press the accelerator pedal down
fully (kick down). The gearbox changes down
automatically or maintains the gear selected
until the maximum engine speed is reached.
On braking, the gearbox changes down
automatically to provide efficient engine
braking. If you release the accelerator sharply, the
gearbox will not change to a higher gear for
safety reasons.
Never select position N while the vehicle
is moving.
Never select position P or R unless the
vehicle is completely stationary.
Sport programme "S"
F Press button S, after starting the engine.
The gearbox automatically favours a dynamic
style of driving.
S appears in the instrument panel.
Return to standard
automatic operation
F At any time, press the selected button again to quit the programme engaged and return
to auto-adaptive mode.
Manual operation
F Select position M for sequential changing
of the six gears.
Driving

117
Collision Risk Alert and
Active Safety Brake
Activation and operating
conditions
The system is activated from 3 mph (5 km/h).
It takes account of:
-
r
egistered vehicles running in the same
direction or stationary,
-

p
edestrians in the traffic lane (bicycles,
motorcycles, animals and objects on the
road are not necessarily detected).
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.
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.
This system is a driving aid that includes three
functions.
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.
Intelligent emergency braking assistance :
it supplements the braking action taken by the
driver if this is inadequate.
Active Safety Brake: it intervenes following
the alert if the driver does not react quickly
enough and does not operate the vehicle's
brakes.
If the driver fails to act, it contributes
towards avoiding a collision or limiting
its severity by reducing the speed of your
vehicle.
The vehicle has a camera located at the top of
the windscreen. In the following cases, deactivating the
system via the vehicle's configuration menu is
recommended:
-
w hen towing a trailer,
- 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 stand
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),
-
fo

llowing impact damage to the windscreen
close to the detection camera,
-

i
f the brake lamps are not working.It is possible that warnings are not given,
are given too late or seem unjustified.
Consequently, always stay alert and be
prepared to react at any time to avoid an
accident.
Operating limits
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Driving