engine Citroen C4 PICASSO 2008.5 1.G Service Manual

117
VIII
S A F E T Y
TRAJECTORY CONTROL SYSTEMS
Anti-skid regulation (ASR) and
electronic stability programme
(ESP)
The anti-skid regulation optimises
traction 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.
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. This is indicated by fl ashing
of this warning light on the
instrument panel. Disarming
In exceptional conditions (starting a
vehicle which is bogged down, stuck
in snow, on soft ground, ...), it may
be advisable to disarm 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 fascia. Reactivation
These systems are reactivated au-
tomatically each time the ignition is
switched back on or from 30 mph
(50 km/h).


Press the "ESP OFF" button again
to reactivate them manually.
If this warning light comes
on on the instrument panel
and the indicator light on the
button comes on, this indi-
cates that the ASR and ESP
systems are disarmed. Operating fault
If this warning light comes
on, accompanied by an au-
dible signal and a message
on the multifunction display,
this indicates a malfunction
of these systems.
Have the systems checked by a
CITROËN dealer.
The ESP/ASR systems offer ex-
ceptional safety in normal driving,
but this should not encourage the
driver to take extra risks or drive at
high speed.
The correct functioning of these
systems depends on observation
of the manufacturer’s recommen-
dations regarding the wheels (tyres
and rims), the braking components,
the electronic components and the
CITROËN assembly and operation
procedures.
After an impact, have these systems
checked by a CITROËN dealer.

126
IX
D R I V I N G
ELECTRONIC PARKING BRAKE
The electronic parking brake com-
bines 2 operational modes:
- AUTOMATIC
Automatic application when the engine stops and automatic re-
lease on use of the accelerator
(automatic operation by default),
- MANUAL
Permanent manual application/ release of the parking brake is
possible by pulling control A
while pressing the brake pedal. Automatic operation
Application with the 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: Application with the engine
running
With the engine running and the vehi-
cle stationary, in order to immobilise the
vehicle you need to manually apply the
parking brake by
pulling on control A .
The application of the parking brake
is confi rmed by:
- the lighting of warning
lamp P on control A and
on the instrument panel,
Before leaving the vehicle,
check that warning lamp P
on the instrument panel is
permanently lit.
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 applied" on the multifunc-
tion screen (except NaviDrive).
An operation sound will confi rm to
you the application/release of your
electronic parking brake. - the lighting of warning
lamp P on control A and
on the instrument panel,
- the display of a message "park- ing brake applied" on 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
on the instrument panel is
permanently lit.

127
IX
D R I V I N G
Release
The electronic parking brake releas-
es automatically and progressive-
ly when you press the accelerator:

 with a manual gearbox (fi rst
gear or reverse gear engaged) ,
press down fully on the clutch
pedal then press on the accel-
erator pedal and move off.

 with an automatic gearbox , ac-
celerate with the selector in posi-
tion D , M or R .

 with an electronic gearbox , ac-
celerate with the selector in posi-
tion A , M or R .
Full release of the parking brake is
confi rmed by: - the extinction of warning lamp P on control A and
on the instrument panel,
- the display of a message "park- ing brake released" on the multi-
function screen. Activation/Deactivation of the
automatic functions
The automatic application when the en-
gine is switched off and the automatic
release when you press the accelerator
can be deactivated. Activation/deactiva-
tion is performed using the confi guration
menu of the multifunction screen. To do
so, select "Personalisation/Confi guration/
Defi ne the Vehicle parameters/Driving
assistance/Automatic handbrake".
The deactivation of these
functions is confi rmed by the
lighting of this warning lamp
on the instrument panel.
With the automatic functions deacti-
vated, the application and release of
the parking brake are done manually.
The deactivation of the auto-
matic functions is recommend-
ed in particularly cold condi-
tions (ice) and during towing
(breakdown, caravan...)
Manual operation
Manual application/release of the
parking brake is always possible.
Application
With the vehicle stationary, to apply
the parking brake whether the engine
is running or off, pull on control A .
The application of the parking brake
is confi rmed by: - the lighting of the warning lamp on control A and of
warning lamp P on the in-
strument panel,
- the display of a message "park- ing brake applied" on the multi-
function screen.
When the driver’s door is
opened with the engine
running, a beep is heard
and a message displayed
if the parking brake has not been
applied.

127
IX
D R I V I N G
Release
The electronic parking brake releas-
es automatically and progressive-
ly when you press the accelerator:

 with a manual gearbox (fi rst
gear or reverse gear engaged) ,
press down fully on the clutch
pedal then press on the accel-
erator pedal and move off.

 with an automatic gearbox , ac-
celerate with the selector in posi-
tion D , M or R .

 with an electronic gearbox , ac-
celerate with the selector in posi-
tion A , M or R .
Full release of the parking brake is
confi rmed by: - the extinction of warning lamp P on control A and
on the instrument panel,
- the display of a message "park- ing brake released" on the multi-
function screen. Activation/Deactivation of the
automatic functions
The automatic application when the en-
gine is switched off and the automatic
release when you press the accelerator
can be deactivated. Activation/deactiva-
tion is performed using the confi guration
menu of the multifunction screen. To do
so, select "Personalisation/Confi guration/
Defi ne the Vehicle parameters/Driving
assistance/Automatic handbrake".
The deactivation of these
functions is confi rmed by the
lighting of this warning lamp
on the instrument panel.
With the automatic functions deacti-
vated, the application and release of
the parking brake are done manually.
The deactivation of the auto-
matic functions is recommend-
ed in particularly cold condi-
tions (ice) and during towing
(breakdown, caravan...)
Manual operation
Manual application/release of the
parking brake is always possible.
Application
With the vehicle stationary, to apply
the parking brake whether the engine
is running or off, pull on control A .
The application of the parking brake
is confi rmed by: - the lighting of the warning lamp on control A and of
warning lamp P on the in-
strument panel,
- the display of a message "park- ing brake applied" on the multi-
function screen.
When the driver’s door is
opened with the engine
running, a beep is heard
and a message displayed
if the parking brake has not been
applied.

128
IX
D R I V I N G
Release
With the ignition on or the engine run-
ning, to release the parking brake,
press on the brake pedal, pull then
release control A .
The full application of the parking
brake is confi rmed by: - the extinction of the warn-ing lamp on control A and
of warning lamp P on the
instrument panel,
- the display of a message "park- ing brake released" on the multi-
function screen.
If you pull control A without pressing
the brake pedal, the parking brake
will not be released and the "Foot on
brake" warning lamp will light up on
the instrument panel.
When stationary, with the
engine running, do not
press the accelerator pedal
unnecessarily, as you may release
the parking brake. Maximum application
If necessary, you can utilise
maxi-
mum application of the parking
brake. It is obtained by means of
a long pull on control A , until you
see the message "parking brake ap-
plied" and a beep is heard.

Maximum application is essential:
- in the case of a vehicle towing a caravan or a trailer, if the au-
tomatic 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),
- 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,
- after a maximum application, the release time will be longer. Particular situations
In certain situations (e.g. starting
the engine), the parking brake can
automatically alter its force. This is
normal operation.
To advance your vehicle a few cen-
timetres without starting the engine,
but with the ignition on, press on the
brake pedal and release the park-
ing brake
by pulling then releasing
control A .
The full release of the parking brake
is confi rmed by the extinction of
warning lamp P (red) on the instru-
ment panel and the display of a
message "parking brake released"
on the multifunction screen.
If the parking brake malfunctions

while applied or if the battery runs
fl at, an emergency release is always
possible.

130
IX
D R I V I N G
Emergency unlocking In the event of the electronic parking
brake malfunctioning or the battery
running fl at, an emergency manual
device can unlock the parking brake.

 Immobilise the vehicle, with the
engine running, by engaging fi rst
gear (manual gearbox), position

P (automatic gearbox) or M or

R (6-speed electronic gearbox),
then switch off the engine.
If it is impossible to immobilise the vehicle, do not action the
control and urgently contact a
CITROËN dealer.

 Fetch the vehicle blocks and the
unlocking device (braided cable)
from the toolbox.

 Immobilise the vehicle by plac-
ing blocks at the front and at the
rear of one of the rear wheels.

 Slide the front left-hand seat
back as far as possible.

 Lift up the fl oor plug B in the car-
pet under the seat.
 Pierce the tab C on the tube D
with the unlocking device.

 Place the unlocking device in the
tube D .

 Turn the unlocking device clock-
wise. For safety reasons
, it is

essential to continue turning the
device as far as it will go or until
you hear a knocking noise. The
parking brake is released.

 Remove the unlocking device
and store it with the blocks in the
toolbox.
- The operation of the parking brake reinitialises when the ig-
nition is switched off then on
again. If the reinitialisation of the
parking brake proves impossi-
ble, contact a CITROËN dealer.
- The subsequent time required for application may be longer
than during normal operation.
For safety reasons, after this manoeuvre it is essential to cont act a CITROËN dealer urgently to have the plug
replaced.
Following an emergency unlocking, immobilisation of the vehi cle is no longer guaranteed once the manual emer-
gency unlocking has been deployed and the manual control doe s not allow the re-application of your parking
brake.
Take no action, either on control A , or stopping starting the engine while the unlocking de vice is engaged.
Take care not to allow moisture or dust in the proximity of th e plug.

132
IX
D R I V I N G

4

SITUATION
CONSEQUENCES

5 Display of message
"
Parking brake faulty
"
and the following warning lamps:
and/or fl ashing - The automatic functions are deactivated.
- The hill start assist is unavailable.
To apply the electronic parking brake:

 Immobilise the vehicle and switch off the ignition

 Pull the control lever for at least 5 seconds or until maximum
application.

 Switch on the ignition and check that the electronic parkin g
brake warning lamps are on.
- Application may take longer than in normal operation.
- If warning lamp P fl ashes or if the warning lamps do not come
on when the ignition is switched on, this method does not work.
Have it checked by a CITROËN dealer.
To release the electronic parking brake:

 Switch on the ignition.

 Pull the control lever and hold it for approximately 3 second s.
Display of message "
Parking brake control
faulty – automatic mode activated" and
the following warning lamps:
and/or fl ashing - Only the functions for automatic application on switchi
ng off
the engine and automatic release on acceleration are avail-
able.
- Manual application/release of the electronic parking brake and
dynamic emergency braking are unavailable.

6 Battery fault - Lighting of the battery warning lamp ma
kes it essential to stop
the vehicle as soon as traffi c allows. Stop and immobilise your
vehicle.
- Apply the electronic parking brake before switching off the
engine.

133
IX
D R I V I N G
HILL START ASSIST
System which keeps your vehicle
immobilised temporarily (approxi-
mately 2 seconds) when starting on
a gradient, the time it takes to move
your foot from the brake pedal to the
accelerator pedal.
This function is only active when:
- the vehicle is completely station-ary, with your foot on the brake
pedal,
- in particular conditions on a slope,
- with the driver’s door closed.
The hill start assist function cannot
be deactivated. Operation
Operating fault
If a malfunction of the system oc-
curs, these warning lamps come on.
Contact a CITROËN dealer to have
the system checked.

On an ascending slope, with the
vehicle stationary, the vehicle is
held for a brief moment when you
release the brake pedal:
- provided you are in fi rst gear or neutral on a manual gearbox,
- provided you are in A or M on an
electronic gearbox,
- provided you are in D or M on an
automatic gearbox.
On a descending slope, with the
vehicle stationary and reverse
gear engaged, the vehicle is held
for a brief moment when you re-
lease the brake pedal.
do not exit the vehicle while
it is being held in the hill
start assist phase.
If you need to exit the ve-
hicle with the engine running,
manually apply the parking brake
and ensure that the warning lamp

P (red) on the instrument panel is
permanently on.

134
IX
D R I V I N G
5-SPEED MANUAL GEARBOX
Starting the vehicle

 Check that the gear lever is in
neutral.

 Do not touch the accelerator.

 For Diesel engines: turn the key
to position M and wait until the
pre-heating warning light switch-
es off if it has come on.

 Operate the starter, turning the
key until the engine starts (no
more than ten seconds).

 In temperatures lower than 0 °C,
declutch whilst turning the starter
to facilitate starting.
(6-SPEED) ELECTRONIC GEARBOX SYSTEM
The (6-speed) electronic gearbox of-
fers a choice between the comfort of
fully automatic operation or the driving
pleasure of manual gear changing.
Therefore, you have a choice of two
driving modes:
- the automatic mode for auto-
matic control of the gears by the
gearbox,
- the sequential mode for manu-
al changing of the gears by the
driver.

 automatic mode: selector 2 in
position A .

 manual mode: selector 2 in posi-
tion M .
In automatic mode, instant manual
operation is possible any time you
action one of the levers 1 .
Mode selection
Only engage reverse gear when
the vehicle is stationary with the
engine at idle.
Engaging reverse gear

 Push the gear lever to the right
then rearwards.

134
IX
D R I V I N G
5-SPEED MANUAL GEARBOX
Starting the vehicle

 Check that the gear lever is in
neutral.

 Do not touch the accelerator.

 For Diesel engines: turn the key
to position M and wait until the
pre-heating warning light switch-
es off if it has come on.

 Operate the starter, turning the
key until the engine starts (no
more than ten seconds).

 In temperatures lower than 0 °C,
declutch whilst turning the starter
to facilitate starting.
(6-SPEED) ELECTRONIC GEARBOX SYSTEM
The (6-speed) electronic gearbox of-
fers a choice between the comfort of
fully automatic operation or the driving
pleasure of manual gear changing.
Therefore, you have a choice of two
driving modes:
- the automatic mode for auto-
matic control of the gears by the
gearbox,
- the sequential mode for manu-
al changing of the gears by the
driver.

 automatic mode: selector 2 in
position A .

 manual mode: selector 2 in posi-
tion M .
In automatic mode, instant manual
operation is possible any time you
action one of the levers 1 .
Mode selection
Only engage reverse gear when
the vehicle is stationary with the
engine at idle.
Engaging reverse gear

 Push the gear lever to the right
then rearwards.