warning light Citroen C4 PICASSO 2008.5 1.G Workshop Manual

151
IX
D R I V I N G
LANE DEPARTURE WARNING SYSTEM
System which detects the involun-
tary crossing of longitudinal traffi c
lane markings on the ground (con-
tinuous or discontinuous line).
Sensors, fi tted below the front
bumper, trigger a warning if the vehi-
cle drifts (speed higher than 50 mph
(80 km/h)).
This system operates to its full poten-
tial above all when used on motor-
ways and main roads. Activation

 Press button A , the indicator light
comes on.
Deactivation

 Press button A again, the indica-
tor light switches 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 mark- ing 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 di-
rection marking (arrow) or non-stand-
ard marking (graffi ti) is crossed. Operating fault In the event of a malfunction, the service
warning light comes on, accompanied
by an audible signal and a message on
the multifunction display.
Consult a CITROËN dealer.
The lane departure warning system
cannot, in any circumstances, re-
place the need for vigilance and re-
sponsibility on the part of the driver. The detection may be disrupted:
- 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.

153
IX
D R I V I N G In bad weather or in winter, ensure
that the sensors are not covered
with mud, ice or snow. When re-
verse gear is engaged, an audible
signal (long beep) indicates that
the sensors may be dirty.

 Press button A again, the warn-
ing light switches off, the system
is reactivated.
Reactivation
Deactivation

 Press button A , the warning light
comes on, the system is fully de-
activated.
The system will be deactivated au-
tomatically when a trailer is being
towed or when a bicycle carrier is
fi tted (vehicle fi tted with a towbar
or bicycle carrier recommended by
CITROËN). Operating fault
If an operating fault occurs, this warn-
ing light is displayed on the instrument
panel and/or a message appears on
the multifunction display, accompa-
nied by an audible signal (short beep),
when reverse gear is engaged.
Consult a CITROËN dealer.

154
IX
D R I V I N G
PNEUMATIC SUSPENSION

Grand C4
Picasso
C4 Picasso
The rear pneumatic suspension en-
hances driving comfort by maintain-
ing a constant body height whatever
the vehicle load. Operation
- If there is an increase in vehi-
cle 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, the automatic correction
will be activated as soon as the ve-
hicle starts to move. During the cor-
rection, the service warning lamp
lights up and a message on the
screen reminds you not to exceed
10 km/h (6 mph).
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 correction can be de-
activated :

 press on the button B for approxi-
mately two seconds,

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

In the event of the system mal-
functioning, alert messages,
always in association with the
service warning lamp, will dis-
play in the instrument panel
.
Consult a CITROËN dealer.
It is essential that you should deactivate
the system in the following instances:
- working under the vehicle,
- changing a wheel,
- transporting the vehicle on a truck or on a boot.
To reactivate the automatic correc-
tion:

 press again on the button B for
approximately two seconds,

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

155
IX
D R I V I N G
Loading/unloading
assistance

Grand C4
Picasso
C4 Picasso
The pneumatic suspension has an
additional function associated with
it : the possibility to raise or lower
the height of the rear of the vehicle
when stationary, in order to facilitate
loading/unloading of the boot. Increasing the height of the boot
sill

 Press continuously at the top of
the control A , which is located in
the boot, on the left-hand side.
This action will be accompanied by
a sound 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 nominal height

 Press briefl y twice at the bottom
of the control A .
Decreasing the height of the boot
sill

 Press continuously at the bottom
of the control A .
This action will be accompanied by
a sound 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 nominal height

 Press briefl y twice at the top of
the control A .
Driving with the boot sill in
a low position may damage
the components located un-
der the bodyshell.

Special features
- If you start the vehicle without having returned it to the nominal
height, the automatic correction
will activate as soon as the ve-
hicle starts to move. During the
correction, the service warning
lamp lights up and a message
on the screen reminds you not to
exceed 10 km/h (6 mph).
-
The loading assistance does not
function in the following instances:
- If the button B is lit up,
- in power economy mode,
- when you fi rst use the function, press for two seconds on the
control A to initialise the system.
All subsequent actions will be
followed immediately by the de-
sired results.

163
X
C H E C K S
Screenwash and headlamp
wash fluid
Fluid specifi cation
For optimum cleaning and to avoid
freezing, this fl uid must not be
topped up or replaced with water.
Reservoir capacities:
- screenwash: approximately 3 litres,
- screenwash and headlamp wash: approximately 6 litres. Diesel additive level
(Diesel engine with particle
emission filter)
A low additive level is indicated by
lighting of the service warning light,
accompanied by an audible warning
and a message on the multifunction
display.
Topping up
This additive must be topped up by
a CITROËN dealer 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.
Empty used oil into the containers
provided for this purpose in the
CITROËN network.
In the case of vehicles fi tted
with headlamp washers, the
minimum level of this fl uid is
indicated by an audible signal
and a message on the multifunction
display.
Top up the level when you stop the
vehicle.

164
X
C H E C K S
CHECKS
Unless otherwise indicated, check
these components in accordance
with the servicing booklet and in
relation to your engine.
Otherwise, have them checked by a
CITROËN dealer.
Battery The battery does not
require any maintenance.
However, check that the
terminals are clean and
correctly tightened, parti-
cularly in summer and winter.
When carrying out work on the bat-
tery, refer to the "Practical infor-
mation" section for details of the
precautions to be taken before dis-
connecting the battery and following
its reconnection.
Air filter and passenger compartment filter
Refer to the servicing
booklet for details of the
replacement intervals for
these components.
Depending on the environment (e.g.
dusty atmosphere) and the use of
the vehicle (e.g. city driving), replace
them twice as often if necessary
(refer to the "Engines" paragraph).
A clogged passenger compartment
fi lter may have an adverse effect on
the performance of the air condi-
tioning system and generate unde-
sirable odours.
Oil filter
Replace the oil fi lter each
time the engine oil is
changed. Particulate filter system
(Diesel)
Complementary to the catalytic con-
verter, this fi lter makes an active
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 occasionally
notice water vapour being emitted
from the exhaust when accelerat-
ing. This is of no consequence 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 a sound
signal and lighting of the service
warning lamp.
This alert tells you that the particle
fi lter is starting to fi ll up (in conditions
of urban driving of exceptionally 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.
Refer to the servicing booklet for
details of the replacement interval
for this component.