warning CITROEN C4 PICASSO 2010 Repair Manual

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165
DRIVING

Reactivation



)
By recall of the memorised
speed

After a disengagement, press on
button 3
. Your vehicle automati-
cally returns to the memorised
cruise speed which is displayed
in zone A
.
If the memorised cruise speed
is higher than the current speed,
the vehicle will accelerate to
reach the former.

)
By selection of the current
speed

Press on button 2
or 4
once the
desired speed has been reached.
The information "OFF"
will then
disappear from the instrument
panel display.



Overriding the programmed
speed
During the operation of cruise con-
trol, it is always possible to use the
accelerator to go faster than the
cruise speed (for example to over-
take another vehicle). The speed
displayed in zone A
fl ashes.
You have only to release the accel-
erator pedal to return to the cruise
speed. If during the operation of cruise
control, the system is unable to
keep within the memorised speed
(for example on a steep descent),
then the speed fl ashes. Adapt your
speed as necessary.

Return to normal driving
Operating fault
If there is a malfunction, a message
will display accompanied by an au-
dible signal and lighting of the ser-
vice warning lamp.
Have it it checked by a CITROËN
dealer or a qualifi ed workshop.
Cruise control should only
be used when the driving
conditions allow you to drive
at a constant speed.
Do not use it in heavy traf-
fi c, or on dangerous or slippery
roads.
The driver must remain attentive
and in full control of his vehicle.
You are recommended to always
keep your feet within range of the
pedals.
To avoid any risk of interfering with
the pedals:


- check that the fl oor mat is cor-
rectly positioned,

- never use more than one fl oor
mat.

)
By an action on the control 1
from
position "REG"
to position 0
.

)
By the engine stopping.
The cruise speed previously
chosen is no longer memorised.

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166
DRIVING
PARKING SPACE SENSORS

After measuring the parking space
available between two vehicles or
obstacles, this system gives you in-
formation on:


- the possibility of fi tting into a free
space, depending on the dimen-
sions of your vehicle and the dis-
tances needed for manoeuvring,

- the level of diffi culty of the ma-
noeuvre to be performed.
The system does not measure spaces
which are clearly much smaller or
larger than the size of the vehicle.

Displays in the instrument
panel
The parking space sensor
function warning lamp can
have three different states:


- off:
the function is not selected,

- on fi xed:
the function is selected
but the conditions for measure-
ment are not yet met (direction
indicator not operating, speed
too high) or the measurement
phase has ended,

- fl ashing:
measurement is in
progress or the message is be-
ing displayed. You can activate the "parking space
sensor" function by pressing but-
ton A.
The fi xed illumination of the
warning lamp indicates that the
function is selected.

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168
DRIVING
LANE DEPARTURE
WARNING SYSTEM
System which detects the involun-
tary crossing of longitudinal traffi c
lane markings on the ground (solid
or broken line).
Sensors, fi tted below the front bum-
per, trigger a warning if the vehicle
drifts over a lane marking (speed
higher than 50 mph (80 km/h)).
This system is particularly useful on
motorways and main roads.

Activation



)
Press this button, the indicator
lamp comes on.



Deactivation



)
Press this button again, the indi-
cator lamp goes off.
The status of the system remains
in the memory when the ignition is
switched off.


Detection

You are warned by the vibration of
the driver's seat cushion:


- on the right-hand side, if the
marking on the ground has been
crossed on the right,

- on the left-hand side, if the marking
on the ground has been crossed
on the left.
No warning is transmitted while the
direction indicator is active and for
approximately 20 seconds after the
direction indicator is switched off.
A warning may be transmitted if a
direction marking (e.g. arrow) or
non-standard marking (e.g. graffi ti)
is crossed.


Operating fault

In the event of a malfunction, the
service warning lamp comes on, ac-
companied by an audible signal and
a message in the screen.
Contact a CITROËN dealer or a
qualifi ed workshop.
The lane departure warning sys-
tem cannot, in any circumstances,
replace the need for vigilance and
responsibility on the part of the
driver.
The detection may be impeded:


- if the sensors are dirty (mud,
snow...),

- if the markings on the ground
are worn,

- if there is little contrast between
the markings on the ground and
the road surface.

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171
DRIVING
PNEUMATIC SUSPENSION

Grand
C4 Picasso

C4 Picasso

The pneumatic rear suspension en-
hances driving comfort by maintain-
ing a constant body height whatever
the vehicle load.

Operation



- If there is an increase in vehicle
load, a sinking of the rear of
the vehicle is detected and the
pneumatic springs infl ate in or-
der to compensate for the extra
weight.

- If there is a decrease in load, a
rising of the rear of the vehicle is
detected and so the pneumatic
springs defl ate to return the ve-
hicle to its nominal height.

- If the vehicle has been unused
for a long period, the pneumatic
springs may infl ate if necessary
when you unlock or open a door,
so as to return the vehicle to its
nominal height.
If you do not reactivate the system
manually, automatic height correc-
tion will be activated as soon as the
vehicle starts to move. During height
correction, the service warning lamp
comes on and a message on the
screen reminds you not to exceed 6
mph (10 km/h).
The automatic correction does not
function if the doors or the boot are
open.
The automatic correction operates
even if your vehicle is in power
economy mode.
Activation/Deactivation
The automatic height correction can
be deactivated:


)
press button B
located on the
left hand boot interior trim for ap-
proximately two seconds,

)
release the button when you
hear a beep. Deactivation is con-
fi rmed by the lighting of the indi-
cator lamp in button B
.

In the event of a system fault,
alert messages, always in asso-
ciation with the service warning
lamp, will appear in the instru-
ment panel
. Contact a CITROËN
dealer or a
qualifi ed workshop.


You must deactivate the system in
the following circumstances:


- when working under the vehicle,

- when changing a wheel,

- when transporting the vehicle on
a lorry or ferry.
To reactivate automatic height cor-
rection:


)
press button B
again for approxi-
mately two seconds,

)
release the button when you hear
a beep. Activation is confi rmed
by the extinction of the indicator
lamp in button B
.

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172
DRIVING

Loading/unloading
assistance

Grand
C4 Picasso

C4 Picasso

The pneumatic suspension has an
additional function: the possibility to
raise or lower the height of the rear
of the vehicle when stationary, in or-
der to facilitate loading/unloading of
the boot.
Increasing the height of the boot
fl oor


)
Press continuously the top con-
trol A
, which is located in the
boot, on the left-hand side.
This action will be accompanied by
an audible signal. You can stop the
movement at any time by releasing
the control.
3 beeps will confi rm that the move-
ment has gone as far as it can.

Returning to the normal height



)
Press briefl y the bottom of con-
trol A
twice.


Decreasing the height of the boot
fl oor


)
Press continuously the bottom of
control A
.
This action will be accompanied by
an audible signal. You can stop the
movement at any time by releasing
the control.
3 beeps will confi rm that the move-
ment has gone as far as it can.
Returning to the normal height



)
Press briefl y the top of control A

twice.
Driving with the boot in a
low position may damage
underbody components.

Particular points



- If you start the vehicle without
having returned it to the normal
height, automatic correction will
activate as soon as the vehicle
starts to move. During the cor-
rection, the service warning
lamp comes on and a message
on the screen reminds you not to
exceed 6 mph (10 km/h).

- Loading assistance does not
function in the following circum-
stances:


- If button B
is illuminated,

- in power economy mode,

- when you fi
rst use the function,
press control A
for two seconds
to initialise the system. The sys-
tem will respond normally to sub-
sequent operation of the control.

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180
CHECKS




















Screenwash and headlamp wash
fl uid

Fluid specifi cation
For optimum cleaning and to avoid
freezing, this fl uid must not be
topped up with or replaced with plain
water.











Diesel additive level (Diesel
engine with particle emission
filter)
A low additive level is indicated by
illumination of the service warning
lamp, accompanied by an audible
warning and a message in the multi-
function screen.

Topping up
This additive must be topped up by
a CITROËN dealer or a qualifi ed
workshop without delay.









Used products

Avoid prolonged contact of
used oil or fl uids with the
skin.
Most of these fl uids are harmful to
health or indeed very corrosive.
Do not discard used oil or
fl uids into sewers or onto
the ground.
Take used oil to a CITROËN
dealer or a qualifi ed workshop
(France) or to an authorised waste
disposal site.
In the case of vehicles fi tted
with headlamp washers, the
low fl uid level is indicated
by an audible signal and a
message in the screen.
Top up the reservoir when you next
stop the vehicle.









Coolant level

Changing the coolant
The coolant does not have to be
changed.

Fluid specifi cation
The coolant must conform to the
manufacturer's recommendations.

The coolant level should be
close to the "MAX" mark but
should never exceed it.
When the engine is warm,
the temperature of the coolant is
regulated by the fan. This can oper-
ate with the ignition off.

On vehicles which are fi tted with
a particle emission fi lter, the fan
may operate after the vehicle has
been switched off, even if the en-
gine is cold.

In addition, as the cooling system is
pressurised, wait at least one hour
after switching off the engine before
carrying out any work.
To avoid any risk of scalding, un-
screw the cap by two turns to al-
low the pressure to drop. When the
pressure has dropped, remove the
cap and top up the level.

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CHECKS






CHECKS












12 V battery

The battery does not re-
quire any maintenance.
However, check that the
terminals are clean and
correctly tightened, partic-
ularly in summer and winter.
When carrying out work on the bat-
tery, refer to the "Practical information"
section for details of the precautions
to be taken before disconnecting the
battery and following its reconnection.










Particle filter system (Diesel)

Complementary to the catalytic
converter, this fi lter makes an ac-
tive contribution to the preservation
of air quality by the retaining of the
unburnt pollutant particles. Black
exhaust fumes are thus no longer
emitted.
After prolonged idling or driving
at very low speeds, you may oc-
casionally notice water vapour be-
ing emitted from the exhaust when
accelerating. This is of no conse-
quence to the running of the vehicle
or to the environment.
If there is risk of clogging, a mes-
sage appears on the multifunction
screen, accompanied by an audible
signal and lighting of the service
warning lamp.
This alert tells you that the particle
fi lter is starting to fi ll up (in condi-
tions of urban driving of excep-
tionally long duration: low speeds,
traffi c jams etc.)
To regenerate the fi lter, it is advised
to drive as soon as possible, when
traffi c conditions permit, at a speed
of 40 mph (around 60 km/h) or
more for at least fi ve minutes (until
the alert message disappears).
If this alert persists, consult a
CITROËN dealer or a qualifi ed
workshop.





The presence of this label, in par-
ticular with the Stop & Start system,
indicates the use of a specifi c 12 V
lead-acid battery with special tech-
nology and specifi cation, for which
the involvement of a CITROËN
dealer or a qualifi ed workshop is
required when replacing or discon-
necting the battery. Failure to observe this recommen-
dation may shorten the life of the
battery.
Unless otherwise indicated, check
these components in accordance
with the servicing booklet and ac-
cording to your engine.
Otherwise, have them checked by
a CITROËN dealer or a qualifi ed
workshop.





















Air filter and passenger
compartment filter
Refer to the servicing
booklet for details of the
replacement intervals for
these components.
Depending on the environ-
ment (e.g. dusty atmosphere) and
the use of the vehicle (e.g. city driv-
ing), replace them twice as often
if necessary
(refer to the "Engines"
section).
A clogged passenger compartment
fi lter may have an adverse effect on
the performance of the air condition-
ing system and generate undesir-
able odours.














Oil filter

Replace the oil fi lter each
time the engine oil is
changed.
Refer to the servicing
booklet for details of the
replacement interval for this compo-
nent.

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PRACTICAL INFORMATION

)
Connect the compressor's elec-
tric plug to the vehicle's 12 V
socket again.

)
Start the vehicle again and leave
the engine running.

)
Adjust the pressure using the
compressor (to infl ate: switch A

in position "1"
; to defl ate:
switch A
in position "0"
and
press button B
), in accordance
with the vehicle's tyre pressure
label (located on the door aper-
ture on the driver's side), then re-
member to check that the leak is
plugged correctly (no further loss
of pressure after several miles).

)
Remove the compressor, then
store the whole kit.

)
Drive at reduced speed (50 mph
[80 km/h]).

)
Visit a CITROËN dealer or a
qualifi ed workshop as soon as
possible to have the tyre repaired
or replaced by a technician. Take care, the sealant
cartridge contains ethyl-
ene-glycol. This product is
harmful if swallowed and causes
irritation to the eyes. Keep it out of
reach of children.
The expiry date of the sealant is
indicated on the base of the car-
tridge.
The cartridge is designed for a sin-
gle use; even if only partly used, it
must be replaced.
After use, do not discard the car-
tridge into the environment, take it
to a CITROËN dealer or to an au-
thorised waste disposal site.
Do not forget to obtain a new
sealant cartridge, available from
a CITROËN dealer or a qualifi ed
workshop.


Under-inflation detection

If the vehicle is fi tted with tyre un-
der-infl ation detection, the tyre
under-infl ation warning lamp will
remain on after the wheel has been
repaired until the system is reini-
tialised by a CITROËN dealer or a
qualifi ed workshop.

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PRACTICAL INFORMATION
CHANGING A WHEEL

Access to the tools

Depending on equipment, the tools
are to be found either in the com-
partment under the second-row pas-
senger footwells (the compartment
is opened by turning the screw a
quarter turn) or in the well under the
third-row left-hand seat.


1.
Tool for removing the central trim
on alloy wheels *
or

2.
Tool for removing the chrome
covers on the wheel bolts on al-
loy wheels *

3.
Centring guide *

4.
Wheelbrace

5.
Vehicle jack with integral handle

6.
Security bolt socket (located in
the glovebox) ** Switch on your hazard
warning lamps, ensure that
any passengers leave the
vehicle and fi nd a safe place to wait
away from traffi c (e.g. behind crash
barriers or on a grass verge).
Never get underneath the vehicle
if it is supported only by the jack;
use a stand.
The jack and the tools are specifi c
to your vehicle. Do not use for any
other purpose.
Do not to exceed a speed of 50 mph
(80 km/h) on your spare wheel.
Have the original wheel repaired
and refi tted as soon as possible.
7.
Short extension for C4 Picasso

8.
Long extension for Grand C4
Picasso (located in the well
under the right hand third row
seat)

9.
Two chocks, provided for chang-
ing a wheel or for other uses on
the vehicle (such as releasing
the electric parking brake)

10.
Parking brake release tool (elec-
tric parking brake)

11 .
Removable towing eye

*
With alloy wheels only.

** With security bolts only.

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PRACTICAL INFORMATION












Removing a wheel



)
Park the vehicle on level, stable
and non-slippery ground. Apply
the parking brake (a message
and a warning lamp appear on
the instrument panel).
Switch off the ignition and en-
gage fi rst gear or reverse gear
depending on the slope (posi-
tion P
if an automatic gearbox,
D
or R
if a 6-speed electronic
gearbox).

)
Use a chock to secure the vehi-
cle more safely. Place the chock
9
in front of the wheel that is op-
posite the wheel affected.
)
Detach the trim using the remov-
ing tool 4
, pulling in the area of
the valve.
For vehicles with alloy wheels,
insert the trim removing tool 1

into the recess in the central trim
and lever it off.
For vehicles with alloy wheels
that have visible bolts, remove
the chrome covers using the re-
moving tool 2
.
)
Slacken the wheel bolts. For ve-
hicles with alloy wheels, undo
the security bolts using the secu-
rity socket 6
.

)
Position the jack under the vehi-
cle, at the jacking point A
closest
to the wheel to be changed.

)
Unwind the jack 5
until its brack-
et is in contact with the ground.
Make sure that the jack is verti-
cal under the jacking point used.

)
Continue to extend the jack so
as to raise the vehicle.

)
Undo the wheel bolts and re-
move the wheel.

Before any operation of this
sort, it is advisable to deactivate
your pneumatic suspension.