2011 Citroen DS4 brake

Ty r e u n d e r - i nfl ation detection

System which automatically and continuously
checks the pressure of the tyres while driving.
Sensors fitted in each valve trigger a warning
in the event of problem (speed above 12 mph
(20 km/h)).

Puncture

The tyre under-inflation detection
system is an aid to driving which does
not replace the need for the driver to be
vigilant or to drive responsibly.


Under-infl ated tyre

This warning lamp is displayed on the
instrument panel and/or a message
appears in the screen, accompanied
by an audible signal, to identify the
wheel concerned. The STOP
warning lamp comes on
and/or this warning lamp is displayed on
the instrument panel, accompanied by
an audible signal and a message in the
screen identifying the wheel concerned.


)
Stop as soon as it is safe to do so, avoiding
any sudden movement of the steering
wheel and the brakes.

)
Repair or change the damaged wheel
(punctured or very deflated tyre), and have
the tyre pressure checked as soon as
possible.


)
Check the tyre pressures as soon as
possible.
This check must be carried out when the tyres
are cold.

Braking assistance systems

Group of supplementary systems which help
you to obtain optimum braking in complete
safety in emergency situations:


- anti-lock braking system (ABS),

- electronic brake force distribution (EBFD),

- emergency braking assistance (EBA).

Anti-lock braking system
and electronic brake force
distribution
Linked systems which improve the stability and
manoeuvrability of your vehicle when braking,
in par ticular on poor or slippery sur faces.

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.

When braking in an emergency, press
very firmly without releasing the
pressure.


Operating fault

If this warning lamp comes on,
together with the STOP
and ABS

warning lamps, accompanied by an
audible signal and a message in the screen, it
indicates a malfunction of the electronic 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.


When replacing wheels (tyres and
rims), ensure that they conform to the
manufacturer's recommendations.
If this warning lamp comes on,
accompanied by an audible signal
and a message in the screen, it
indicates a malfunction of the anti-lock braking
system which could result in loss of control of
the vehicle when braking.
In either case, contact a CITROËN dealer or a
qualified workshop.

177
Safety









Emergency braking assistance

System which, in an emergency, enables 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 efficiency.
When braking in an emergency, press
firmly without releasing the pressure.



















Trajectory control systems (ESP)


Anti-slip regulation (ASR)
and electronic stability
control (ESC)

The anti-slip regulation (also known as traction
control) optimises traction to prevent skidding
of the wheels, by acting on the brakes of the
driving wheels and on the engine.
The electronic stability control 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 automatically
each time the vehicle is star ted.
They come into operation in the event of a grip
or trajectory problem.
This is indicated by flashing of this
warning lamp in the instrument panel.








Intelligent traction control
system ("Snow motion")
Your vehicle has a system to help driving on
snow: intelligent traction control.

This system detects situations of difficult
sur face adhesion that could make it difficult to
move off or make progress on deep fresh snow
or compacted snow.
In these situations, the intelligent traction
control
limits the amount of wheel slip to
provide the best traction and trajectory control
for your vehicle.

The use of snow tyres is strongly
recommended on sur faces offering low
levels of adhesion.

Electric parking brake


The electric parking brake combines
2 operational 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
.
Do not place any object (packet of
cigarettes, telephone...) between the
gear lever and the electric parking
brake control lever.
It is recommended that you do not
apply the parking brake in very cold
conditions (ice) and during towing
(breakdown, caravan...). Deactivate the
automatic functions and release the
parking brake manually.

If this warning lamp comes on in
the instrument panel, the automatic
mode is deactivated.

Programming the mode

Depending on the country of sale of the vehicle,
the automatic application when the engine is
switched off and the automatic release when
you press the accelerator can be deactivated.
Activation/deactivation is done
using the vehicle configuration
menu; refer to the section covering
the configuration of your vehicle's
systems.
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.

193Driving
With the ignition on or the engine running, to
release the parking brake, press
on the brake

pedal
or the accelerator, pull then release

control A
.


Manual release


Before leaving the vehicle, ensure
that parking brake warning lamp in
the instrument panel is on fixed, not
flashing.



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
confirmed by:


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

- display of the message
"Handbrake on".
When the driver’s door is opened with the
engine running, a message is displayed
accompanied by an audible signal if the parking
brake has not been applied, except in the case
of an automatic gearbox with the gear lever in
position P
. The full application of the parking brake is
confirmed by:


- the braking warning lamp and
the P
warning lamp in the control
lever A
going off,

- display of the message
"Handbrake off".

If you pull control lever A
without 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 make a maximum
application
of the parking brake. This 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 manually,

- 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
maximum 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
release time will be longer.

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



Automatic application,
engine off

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.

Before leaving the vehicle, ensure
that parking brake warning lamp in
the instrument panel is on fixed (not
flashing).
Never leave a child alone inside the
vehicle with the ignition on, as they
could release the parking brake.


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

- display of the message
"Handbrake on". The application of the parking brake is
confirmed by:

Automatic release

The electric parking brake releases
automatically and progressively
when you
press the accelerator:


)
Manual gearbox:
press down fully on the
clutch pedal, engage first gear or reverse,
press on the accelerator 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 the accelerator pedal.

When stationary, with the engine
running, do not press the accelerator
pedal unnecessarily, as you may
release the parking brake.
Full release of the parking brake is confirmed
by:


- the braking warning lamp and
the P
warning lamp in the control
lever A
going off,

- display of the message
"Handbrake off ".

195Driving
With the engine running and the vehicle
stationary, in order to immobilise the vehicle
it is essential to manually
apply the parking
brake by pulling
control lever A
.


Immobilising the vehicle,
engine running

The emergency braking must only be
used in exceptional circumstances.

Before leaving the vehicle, ensure
that parking brake warning lamp in
the instrument panel is on fixed, not
flashing.
The application of the parking brake is
confirmed by:


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

- display of the message
"Handbrake on".
When the driver’s door is opened, a message is
displayed accompanied by an audible signal, if
the parking brake has not been applied, except
in the case of an automatic gearbox with the
gear lever in position P
.


Particular situations


In cer tain situations (e.g. star ting the engine),
the parking brake can automatically alter its
force. This is normal operation.
To advance your vehicle a few centimetres
without star ting the engine, but with the ignition
on, press on the brake pedal and release the
parking brake by pulling
then releasing
the
control lever A
. The full release of the parking
brake is confirmed by the warning lamps
in the control lever A
and in the instrument
panel going off and display of the message
"Handbrake off".
If the parking brake develops a fault while
applied
or if the battery runs flat, an
emergency release is always possible.



Emergency braking



In the event of failure of the electronic
stability control system, signalled
by the illumination of this warning
lamp, braking stability is then 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 control provides stability
during emergency braking.
If the emergency braking malfunctions,
the message "Parking brake faulty" will be
displayed.

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


)
Immobilise the vehicle (or keep it
stationary, if the brake pedal is pressed),
with the engine running, by engaging
first gear (manual gearbox), position P

(automatic gearbox) or position M
or R

(6 -speed electronic gearbox system).









Emergency release


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

)
Fetch the two vehicle blocks B
and the
release device C
, located under the boot
carpet.
)
Immobilise the vehicle by placing the blocks
in front or behind the two front wheels,
opposite to the direction of the slope.

)
Remove the storage box under the boot
carpet for access to the emergency release
device.