2011.5 Citroen C4 DAG brake

8
SAFETY
136








TYRE UNDER-INFLATION
DETECTION
System which automatically and continu-
ously checks the pressure of the tyres
while driving.
Sensors fi tted in each valve trigger a
warning in the event of problem (speed
above 12 mph (20 km/h)).
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.

Under-infl ated tyre
The STOP
warning lamp
comes on and/or this warn-
ing lamp is displayed on the
instrument panel, accompa-
nied by an audible signal and
a message in the screen iden-
tifying 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 defl ated
tyre), and have the tyre pressure
checked as soon as possible.

Puncture

Sensor(s) not detected or faulty
A message appears in the screen, ac-
companied by an audible signal, to
identify the wheel or wheels which are
not detected or to indicate a malfunc-
tion in the system.
Contact a CITROËN dealer or a quali-
fi ed workshop to replace the faulty
sensor(s).
This message is also displayed
when one of the wheels is away
from the vehicle (being repaired)
or when one or more wheels
without a sensor are fi tted.
If your vehicle is equipped with
a spare wheel, this is not fi tted
with a sensor. All repairs and changing of tyres
on a wheel fi tted with this sys-
tem must be carried out by a
CITROËN dealer or a qualifi ed
workshop.
If, when changing a tyre, you
install a wheel which is not de-
tected by your vehicle (example:
fi tting of snow tyres), you must
have the system reinitialised by
a CITROËN dealer or a qualifi ed
workshop.
The tyre under-infl ation detec-
tion system is an aid to driving
which does not replace the need
for the driver to be vigilant or to
drive responsibly. This system does not avoid the
need to have the tyre pressures
checked regularly (refer to the
"Identifi cation markings" sec-
tion) to ensure that the optimum
dynamic performance of the ve-
hicle is maintained and prevent
premature wear of the tyres, par-
ticularly in arduous driving condi-
tions (heavy load, high speed).
The tyre pressures must be
checked cold, at least once a
month. Remember to check the
pressure of the spare wheel.
The tyre under-infl ation detec-
tion system may experience
temporary interference due to
electro-magnetic emissions on a
frequency close to that used by
the system.


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

8
SAFETY
137
















BRAKING ASSISTANCE
SYSTEMS
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.



Anti-lock braking system
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
signal and a message in the
screen, it indicates a malfunc-
tion of the anti-lock braking system
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 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.











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
SAFETY
138

















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 pre-
vent 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 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
system ("Snow motion")
Your vehicle has a system to help driving
on snow: intelligent traction control.
This system detects 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, the intelligent trac-
tion control
limits the amount of wheel
slip to provide the best traction and tra-
jectory control for your vehicle.

Deactivation
In exceptional conditions (starting a ve-
hicle which is bogged down, stuck in
snow, on soft ground...), if you are un-
able to make progress, it may be ad-
visable to temporarily deactivate these
systems, so that the wheels can spin
freely and allow the vehicle to move.


)
Press the "ESP OFF"
button, located
near the steering wheel.

If this warning lamp comes on in the in-
strument panel and the indicator lamp
in the button comes on, this indicates
that these systems are deactivated.

The use of snow tyres is strongly
recommended on surfaces offer-
ing low levels of adhesion.

It is recommended that the systems be
reactivated as soon as possible.

9
DRIVING
147








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
.
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
vehicle, the automatic application when
the engine is switched off and the auto-
matic release when you press the ac-
celerator can be deactivated.

It is recommended that you do
not apply the parking brake in
very cold conditions (ice) and
during towing (breakdown, car-
avan...). Deactivate the auto-
matic 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:


-
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, en-
sure 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 message is dis-
played accompanied by an audible sig-
nal if the parking brake has not been
applied, except in the case of an au-
tomatic gearbox with the gear lever in
position P
. Activation/deactivation is done
using the vehicle confi guration
menu; refer to the section cov-
ering the confi guration 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 sig-
nal 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
DRIVING
148

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:


- 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
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 make a maxi-
mum 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 maxi-
mum" 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, en-
sure 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 park-
ing 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
149

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 sys-
tem
: select position A
, M
or R
then
press on the accelerator pedal.

)
Automatic gearbox
: select posi-
tion D
, M
or R
then press the accelera-tor pedal.
Full release of the parking brake is con-
fi rmed by:


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

- 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, en-
sure that parking brake warning
lamp in 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 pulling

then releasing
the control lever A
. The
full release of the parking brake is con-
fi rmed by the warning lamps in the con-
trol 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 fl at,
an emergency release is always pos-
sible.

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
.

9
DRIVING
150

Emergency braking


In the event of failure of the elec-
tronic stability control system,
signalled by the illumination of
this warning lamp, braking sta-
bility 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
service 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.
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 stationary, if the brake pedal is
pressed), with the engine running,
by engaging fi rst gear (manual gear-
box), position P
(automatic gear-
box) or position M
or R
(6-speed
electronic gearbox system).

)
Switch off the engine but leave the
ignition on. If it is not possible to im-
mobilise the vehicle, do not operate
the control and contact a CITROËN
dealer or a qualifi ed workshop with-
out delay.

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

9
DRIVING
151

)
Immobilise the vehicle by placing
the blocks in front or behind the two
front wheels, opposite to the direc-
tion 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 assured 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.