2010 CITROEN C4 PICASSO brake

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127
SAFETY
TYRE UNDER-INFLATION DETECTION
Sensors fi tted in each valve check
the tyre pressure during driving and
trigger a warning in the event of
malfunction (speed above 12 mph
(20 km/h)).

Under-infl ated tyre The tyre under-infl ation detection
system is an aid to driving which
does not replace the vigilance or
responsibility of the driver.
Puncture
The service warning lamp
comes on in the instrument
panel, accompanied by an
audible signal and a mes-
sage on the multifunction screen lo-
cating the wheel concerned.
Check the tyre pressures as soon as
possible. This check must be carried
out when the tyres are cold. The STOP
warning lamp
comes on in the instrument
panel, accompanied by an
audible signal and a mes-
sage on the multifunction screen lo-
cating the wheel concerned.
Stop immediately, avoiding any sud-
den movement of the steering wheel
and the brakes.
Change the damaged wheel (punc-
tured or very defl ated tyre), and
have the tyre pressure checked as
soon as possible.

Sensor(s) not detected or faulty
The service warning lamp
comes on in the instrument
panel, accompanied by an
audible signal and a mes-
sage on the multifunction screen
locating the wheel or wheels which
are not detected or indicating a fault
in the system.
Have the faulty sensor(s) checked
by a CITROËN dealer or a qualifi ed
workshop. All repairs and changing of tyres
on a wheel fi tted with this system
must be carried out by a CITROËN
dealer or a qualifi ed workshop.
If, when changing a tyre, you in-
stall a wheel which is not detected
by your vehicle (example: fi tting
of snow tyres), you must have the
system reinitialised by a CITROËN
dealer or a qualifi ed workshop.
This system does not avoid the
need to have the tyre pressures
checked regularly (refer to the
"Technical data - Identifi cation
markings" section) to ensure that
the optimum dynamic performance
of the vehicle is maintained and
prevent premature wear of the
tyres, particularly in arduous driv-
ing conditions (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 detection
system may experience temporary
interference due to electro-magnetic
signals on a frequency close to that
used by the system.
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.
The spare wheel is not fi tted with a
sensor.

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128
SAFETY
BRAKING ASSISTANCE
SYSTEMS
Group of supplementary systems
which help you to obtain optimum
braking in complete safety in emer-
gency situations:


- anti-lock braking system (ABS),

- electronic brake force distribu-
tion (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 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

When braking in an emergency,
press very fi rmly without releasing
the pressure. If this warning lamp comes
on, accompanied by an au-
dible 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.
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 elec-
tronic 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.

In either case, contact a CITROËN
dealer or a qualifi ed workshop.

When replacing wheels (tyres and
rims), ensure that they conform to
the manufacturer's recommenda-
tions.











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 effi ciency.
When braking in an emergency,
press fi rmly without releasing the
pressure.

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129
SAFETY
TRAJECTORY CONTROL
SYSTEMS

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

The anti-slip regulation (also known
as Traction Control) optimises trac-
tion to prevent skidding of the wheels,
by acting 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.

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


)
Press the "ESP OFF"
button, lo-
cated in the centre of the dash-
board.
If this warning lamp comes
on in the instrument panel
and the indicator lamp on the
button comes on, this indi-
cates that the ASR and ESP
systems are deactivated. This is indicated by fl ashing
of this warning lamp in the
instrument panel.

Activation
These systems are activated auto-
matically each time the vehicle is
started.
They come into operation in the event
of a grip or trajectory problem.

Intelligent Traction Control
system *

Your vehicle has a system to help
driving on snow.
This automatic system continuously
checks for situations of diffi cult sur-
face adhesion that could make it dif-
fi cult to move off or make progress
on deep fresh snow or compacted
snow.
In these situations, the system takes
over from the ASR
system by opti-
mising the amount of wheel slip to
provide the best traction and trajec-
tory 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.

*
Depending on engine type.

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139
DRIVING
ELECTRIC PARKING BRAKE
The electric parking brake operates
as follows:


- automatic application/release

Application is automatic when
the engine stops, release is au-
tomatic on use of the accelerator
(active by default).

- manual application/release

Manual application/release of
the parking brake is possible
by pulling control lever A
while
pressing the brake pedal.


Manual application

With the vehicle stationary, to apply
the parking brake whether the en-
gine is running or not, pull
control
lever A
.


Manual release

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 lever A
.


- the warning lamp P
in con-
trol lever A
and in the in-
strument panel going off,

- the display of a message
"Parking brake off" in the multi-
function screen. The application of the parking brake
is confi rmed by:


-
the illumination of the warn-
ing lamp P
in control lever A

and in the instrument panel,

- the display of a message
"Parking brake on" in the multi-
function screen.
When the driver’s door is
opened with the engine run-
ning, a beep is heard and a
message displayed if the parking
brake has not been applied.
Before getting out of the vehicle,
check that the warning lamp P
is
on fi xed in the instrument panel
(not fl ashing). The full application of the parking
brake is confi rmed by:
If you pull control lever A

without pressing the brake
pedal, the parking brake
will not be released and
the "Foot on brake" warn-
ing lamp will come on in
the instrument panel.

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140
DRIVING

Automatic application,
engine off
With the vehicle stationary, the park-
ing brake is automatically applied
when the engine is switched off.

The application of the parking brake
is confi rmed by:


-
the illumination of warning
lamp P
in control lever A

and in the instrument panel,

Automatic release

The electric parking brake releases
automatically and progressively

when you press the accelerator:


)
Manual gearbox
(fi rst gear or
reverse gear engaged): press
down fully on the clutch pedal
then press on the accelerator
pedal and move off.

)
Automatic gearbox
: accelerate
with the selector in position D
, M

or R
.

)
Electronic gearbox
: accelerate
with the selector in position A
, M

or R
.
Full release of the parking brake is
confi rmed by:


- the warning lamp P
in con-
trol lever A
and in the in-
strument panel going off,

- the display of a message "Parking
brake off" in the multifunction
screen.

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


Maximum application

If necessary, you can use maximum
application
of the parking brake. It
is obtained by means of a long pull

on control lever A
, until you see the
message "Parking brake on" and an
audible signal is heard.

Maximum application is essential:



- when towing a caravan or a trail-
er, if the automatic functions are
activated but you are applying
the parking brake manually,

- when the gradient you are parked
on is variable in its effect (e.g. on
a ferry, in a lorry, during towing),


- when towing, when loaded or
when parking on a gradient, turn
the front wheels towards the
pavement and engage a gear
when you park,

- after a maximum application, the
release time will be longer.

Before leaving the vehicle,
check that warning lamp P

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.
- the display of a message
"Parking brake on" in the multi-
function screen.
The normal operating sound will con-
fi rm to you the application/release of
the electric parking brake.

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141
DRIVING

To immobilise the vehicle,
engine running
To immobilise the vehicle when sta-
tionary with the engine running, you
must apply the parking brake manu-
ally by pulling
on control lever A
.
The application of the parking brake
is confi rmed by:


- the illumination of warning
lamp P
in control A
and in
the instrument panel,

- the display of a message
"Parking brake on" in the multi-
function screen.
When the driver’s door is opened, a
beep is heard and a message dis-
played if the parking brake has not
been applied.
Before leaving the vehicle,
check that warning lamp P

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
automatically alter its force. This is
normal operation.
To move your vehicle without start-
ing the engine (towing, etc...), but
with the ignition on
, press the brake
pedal and release the parking brake
by pulling
then releasing
control
lever A
.
The full release of the parking brake
is confi rmed by the warning lamp P

(red) in the instrument panel going
off and the display of a message
"Parking brake off" in the multifunc-
tion screen.
If the parking brake malfunctions
while applied or if the battery
runs
fl at, an emergency release remains
possible.


Activation/Deactivation of the
automatic functions *

The automatic application when
the engine is switched off and the
automatic release when you press
the accelerator can be deactivated.
Activation/deactivation is performed
using the confi guration menu of the
multifunction screen. To do so, se-
lect "Vehicle parameters/Comfort/
Automatic handbrake."
The deactivation of these
functions is confi rmed by the
lighting of this warning lamp
in the instrument panel.

* According to country With the automatic functions deac-
tivated, the application and release
of the parking brake are done manu-
ally.

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142
DRIVING

Dynamic emergency braking

In the event of a failure of the vehi-
cle’s main braking system or in an
exceptional situation (e.g. driver tak-
en ill, under instruction, etc) a con-
tinuous pull on the control lever A

will stop the vehicle.
The electronic stability programme
(ESP) provides stability during dy-
namic emergency braking.
If the dynamic emergency braking
malfunctions, one of the following
messages will be displayed in the
multifunction screen:


- "Parking brake faulty".

- "Parking brake control faulty". If a failure of the ESP sys-
tem is signalled by the il-
lumination of this warning
lamp, then braking stability
is not guaranteed. In this event, sta-
bility must be assured by the driver
by repeating alternate "pull-release"
actions on control lever A
.
The dynamic emergency
braking must only be used in
exceptional circumstances.

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143
DRIVING

Emergency release
In the event of a malfunction of the
electric parking brake or the battery
running fl at, an emergency mecha-
nism can release the parking brake.


)
Immobilise the vehicle, with the
engine running, by engaging fi rst
gear (manual gearbox), posi-
tion P
(automatic gearbox) or M

or R
(6-speed electronic gearbox
system).

)
Switch off the engine, but leave
the ignition on.
If the vehicle cannot be immo-
bilised, do not do anything and
contact a CITROËN dealer or a
qualifi ed workshop without delay.

)
Fetch the vehicle blocks E
and
the release tool F
(handle) from
the toolbox.

)
If on a gradient: chock the vehi-
cle by placing the blocks in front
of or behind the front wheels, on
the falling side of the gradient.
If on level ground: chock the
vehicle by placing the blocks in
front of and behind one of the
front wheels.
)
Slide the front left-hand seat
back as far as possible.

)
Lift up the fl oor plug
B
on the
carpet in front of the seat.


)
Pierce the tab C
on the tube D

with the release tool F
.

)
Place the end of the handle F
in
the tube D
.

)
Turn the release tool F clock-
wise.
For safety reasons
, it is
essential
to continue turning the
device as far as it will go. The
parking brake is released.

)
Remove the release tool F
and
store it with the blocks E
in the
toolbox.



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

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

When the release tool F
is engaged, do not operate the control lever or the ignition switch.
Immobilisation of the vehicle is no longer assured once the manual emergency release has been used.
The emergency release system cannot be used to apply the parking brake mechanically.
Take care not to allow moisture or dust in the proximity of the plug.
For safety reasons, contact a CITROËN dealer or a qualifi ed workshop as soon as possible to have the plug replaced.