2011 Citroen C4 brake

8
SAFETY
132
BRAKING ASSISTANCESYSTEMS
Group of supplementary systems which
help you to obtain optimum braking in
complete safety in emergency situa-
tions:


- anti-lock braking system (ABS),

- electronic brake force distribution
(EBFD),

- emergency braking assistance (EBA).

When braking in an emergency,
press very fi rmly without releas-
ing the pressure.
When replacing wheels (tyres
and rims), ensure that they con-
form to the manufacturer's rec-
ommendations.
When braking in an emergency,
press fi rmly without releasing
the pressure.

and electronic brake force distribution

Linked systems which improve the sta-
bility and manoeuvrability of your vehi-
cle when braking, in particular on poor
or slippery surfaces.

Activation
The anti-lock braking system comes
into operation automatically when there
is a risk of wheel lock.
Normal operation of the ABS may make
itself felt by slight vibration of the brake
pedal.
Operating fault
If this warning lamp comes on,
accompanied by an audible sig-
nal and a message in the mul-
tifunction screen, it indicates a
malfunction of the anti-lock braking sys-
tem which could result in loss of control
of the vehicle when braking.
If this warning lamp comes on,
together with the STOP
and
ABS
warning lamps, accompa-
nied by an audible signal and a
message in the multifunction screen, it
indicates a malfunction of the electron-
ic brake force distribution which could
result in loss of control of the vehicle
when braking.

You must stop as soon as it is safe
to do so.

Emergency braking assistance

System which, in an emergency, en-
ables you to obtain the optimum braking
pressure more quickly, thus reducing
the stopping distance.

Activation
It is triggered by 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 effi ciency.
In either case, contact a CITROËN
dealer or a qualifi ed workshop.

8
133
TRAJECTORY CONTROL SYSTEMS

Anti-slip regulation (ASR) and electronic stability programme(ESP)


The anti-slip regulation (also known as
Traction Control) optimises traction to
prevent skidding of the wheels, by act-
ing on the brakes of the driving wheels
and on the engine.
The electronic stability programme acts
on the brake of one or more wheels and
on the engine to keep the vehicle on the
trajectory required by the driver, within
the limits of the laws of physics.

Activation
These systems are activated automati-
cally each time the vehicle is started.
They come into operation in the event
of a grip or trajectory problem.
This is indicated by fl ashing of
this warning lamp in the instru-
ment panel.

(Intelligent Traction Control)

Your vehicle has a system to help driving
on snow: Intelligent Traction Control.
This automatic system continuously
checks for situations of diffi cult surface
adhesion that could make it diffi cult to
move off or make progress on deep
fresh snow or compacted snow.
In these situations, Intelligent Traction
Control
takes over from the ASR
sys-
tem, limiting the amount of wheel slip to
provide the best traction and trajectory
control, even without snow tyres and
with or without chains.
In extremely severe conditions (snow
on top of ice, sand, deep mud…), it can
be useful to deactivate the ESP/ASR

systems to allow a degree of wheel spin
and so recover grip.

Deactivation
In exceptional conditions (starting a ve-
hicle which is bogged down, stuck in
snow, on soft ground...), it may be ad-
visable to deactivate the ASR and ESP
systems, so that the wheels can move
freely and regain grip.


)
Press the "ESP OFF"
button, located
on the left below the steering wheel.

If this warning lamp comes on
in the instrument panel and
the indicator lamp in the button
comes on, this indicates that
the ASR and ESP systems are
deactivated.

9
DRIVING
142
ELECTRIC PARKING BRAKE

The electric parking brake combines
2 operating modes:


- Automatic Application/Release


Application is automatic when the
engine stops, release is automatic
on use of the accelerator (activated
by default),

- Manual Application/Release


The parking brake can be applied/
released manually by pulling control
lever A
.
If this warning lamp comes on
in the instrument panel, the au-
tomatic mode is deactivated.
Programming the mode

Depending on the country of sale of the ve-
hicle, the automatic application when the
engine is switched off and the automatic
release when you press the accelerator
can be deactivated.

It is recommended that you do
not apply the parking brake in
very cold conditions (ice) and
during towing (breakdown, cara-
van...). Deactivate the automatic
functions and release the parking
brake manually.

Manual application

With the vehicle stationary, to apply the
parking brake whether the engine is
running or off, pull
control lever A
.
The application of the parking brake is
confi rmed by:


- lighting of the braking warn-
ing lamp and of the P
warning
lamp in the control lever A
,

- display of the message
"Handbrake on".

Before leaving the vehicle, check
that parking brake warning lamp
in the instrument panel is on
fi xed, not fl ashing.
When the driver’s door is opened with
the engine running, a loud beep is heard
and a message is displayed if the park-
ing brake has not been applied, unless
the gear lever is in position P
(Park) in
the case of an automatic gearbox.
Activation/deactivation is per-
formed using the vehicle confi gu-
ration menu, refer to the section
on parameter settings for the
systems of your vehicle.

The parking brake is then applied and
released manually. When the driver's
door is opened, there is an audible signal
and a message is displayed if the brake
is not applied.

Do not place any object (packet
of cigarettes, telephone...) be-
tween the gear lever and the
electric parking brake control
lever.

9
143

Manual release

With the ignition on or the engine run-
ning, to release the parking brake,
press
on the brake

pedal
or the accel-
erator, pull then release
control A
.
The full application of the parking brake
is confi rmed by:


- extinction of the braking warn-
ing lamp and of the P
warning
lamp in the control lever A
,

- display of the message
"Handbrake off".

If you pull control lever A
with-
out pressing the brake pedal,
the parking brake will not be
released and a warning lamp
will come on in the instrument
panel.


Maximum application

If necessary, you can utilise maximum
application
of the parking brake. It is
obtained by means of a long pull
on
the control lever A
, until you see the
message "Handbrake on maximum"
and a beep is heard.

Maximum application is essential:



- in the case of a vehicle towing a
caravan or a trailer, if the automatic
functions are activated but you are
applying the parking brake manu-
ally,

- when the gradient you are parked
on may vary (e.g. on a ferry, on a
lorry, during towing),

In the case of towing, a loaded vehicle
or parking on a gradient, make a maxi-
mum application of the parking brake
then turn the front wheels towards the
pavement and engage a gear when you
park.
After a maximum application, the re-
lease time will be longer.

Automatic application, engine off

With the vehicle stationary, the parking
brake is automatically applied when
the engine is switched off.

The application of the parking brake is
confi rmed by:


-

illumination of the braking warn-
ing lamp and of the P
warning
lamp in the control lever A
,


- display of the message
"Handbrake on".

Before leaving the vehicle, check
that parking brake warning lamp
in the instrument panel is on
fi xed (not fl ashing).
Never leave a child alone inside
the vehicle with the ignition on,
as they could release the parking
brake.

In the case of towing, a loaded
vehicle or parking on a gradient,
turn the front wheels towards the
pavement and engage a gear
when you park.

9
DRIVING
144

Automatic release

The electric parking brake releases au-
tomatically and progressively
when
you press the accelerator:


)
Manual gearbox:
press down fully
on the clutch pedal, engage fi rst
gear or reverse, press on the accel-
erator pedal and move off.

)

6-speed electronic gearbox system
:
select position A
, M
or R
then press on
the accelerator pedal.

)

Automatic gearbox:
select position D
,
M
or R
then press on the accelerator
pedal.

Full release of the parking brake is con-
fi rmed by:


- extinction of braking warning
lamp and of the P
warning
lamp in the control lever A
,

- display of the message
"Handbrake off".

When stationary, with the engine
running, do not press the ac-
celerator pedal unnecessarily,
as you may release the parking
brake.



Immobilising the vehicle,
engine running
With the engine running and the vehicle
stationary, in order to immobilise the
vehicle it is essential to manually
ap-
ply the parking brake by pulling
control
lever A
.
The application of the parking brake is
confi rmed by:


-
illumination of the braking
warning lamp and the P
warn-
ing lamp in the control lever A
,



- display of the message
"Handbrake on".

Before leaving the vehicle, check
that parking brake warning lamp
on the instrument panel is on
fi xed, not fl ashing.

Particular situations


In certain situations (e.g. starting the
engine), the parking brake can auto-
matically alter its force. This is normal
operation.
To advance your vehicle a few centime-
tres without starting the engine, but with
the ignition on, press on the brake pedal
and release the parking brake by pull-
ing
then releasing
the control lever A
.
The full release of the parking brake is
confi rmed by the warning lamps in the
control lever A
and in the instrument
panel going off and display of the mes-
sage "Handbrake off".
If the parking brake malfunctions while
applied
or if the battery runs fl at, an
emergency release is always possible.

When the driver’s door is opened, a
loud beep is heard and a message is
displayed if the parking brake has not
been applied, unless the selector lever
is in position P
(Park) in the case of an
automatic gearbox.

9
DRIVING
145

Emergency braking

If a failure of the ESP system is
signalled by the illumination of
this warning lamp, then braking
stability is not guaranteed.
In this event, stability must be assured
by the driver by repeating alternate
"pull-release" actions on the control
lever A
.
In the event of a failure of the main ser-
vice brake or in an exceptional situation
(e.g. driver taken ill, under instruction,
etc) a continuous pull on the control
lever A
will stop the vehicle.
The electronic stability programme
(ESP) provides stability during emer-
gency braking.
If the emergency braking malfunctions,
the message "Parking brake faulty" will
be displayed.
The emergency braking must
only be used in exceptional cir-
cumstances.
Emergency release

In the event of the electric parking brake
malfunctioning or the battery running
fl at, an emergency manual device can
release the parking brake.


)

Immobilise the vehicle (or keep it sta-
tionary, if the brake pedal is pressed),
with the engine running, by engaging
fi rst gear (manual gearbox), position P

(automatic gearbox) or M
or R
(6-speed
electronic gearbox system).

)
Switch off the engine but leave the igni-
tion on. If it is not possible to immobilise
the vehicle, do not operate the control
and contact a CITROËN dealer or a
qualifi ed workshop without delay.


)
Fetch the two vehicle blocks B
and the
release device C
, located under the
boot carpet.

9
DRIVING
146

)
Immobilise the vehicle by placing the
blocks in front or behind the two front
wheels, opposite to the direction of the
slope.
For safety reasons, after this op-
eration it is essential to contact
a CITROËN dealer or a qualifi ed
workshop without delay to re-
place the protective cover.
Following an emergency unlock-
ing, immobilisation of the vehicle
is no longer guaranteed once the
manual emergency release has
been deployed and the manual
control does not allow the re-ap-
plication of your parking brake.
Take no action, either on the
control lever A
, or stopping start-
ing the engine while the release
device is engaged.
Take care not to allow moisture
or dust in the proximity of the
protective cover.

)
Remove the storage box under the
boot carpet for access to the emer-
gency release device.

)
Pierce the protective cover D
on the
tube E
with the release device.

)
Place the release device in the
tube.

)
Turn the release device clockwise .


For safety reasons
, it is essential

to continue turning the device until it
reaches its stop. The parking brake
is released.

)
Remove the release device and
store it with the blocks in the toolbox
under the boot carpet.

- The operation of the parking
brake reinitialises when the igni-
tion is switched off then on again.
If the reinitialisation of the parking
brake proves impossible, contact
a CITROËN dealer or a qualifi ed
workshop.

- The subsequent time required for
application may be longer than dur-
ing normal operation.

9
DRIVING
147

Operating faults

If the electric parking brake malfunction warning lamp comes on together with one or more of the warning lamps presented
in these tables, place the vehicle in a safe condition (on level ground, gear engaged) and contact a CITROËN dealer or a
qualifi ed workshop without delay.


Situations



Consequences


Display of the message " Parking brake fault
" and of the
following warning lamps:

- The automatic functions are deactivated.

- Hill start assist is not available.

- The electric parking brake can only be used manually.
Display of the message " Parking brake fault
" and of the
following warning lamps:

- Manual release of the electric parking brake is only avail-
able by pressing the accelerator pedal and releasing the
control.

- Hill start assist is not available.

- The automatic functions and the manual application are
still available.
Display of the message " Parking brake fault
" and of the
following warning lamps:

- The automatic functions are deactivated.

- Hill start assist is not available.