sensor Citroen C4 PICASSO 2009.5 1.G User Guide

90
V I S I B I L I T Y
V
Reverse gear
When reverse gear is engaged, the
rear wiper will come into operation if
the windscreen wipers are operating.
Programming The function is activat-
ed or deactivated via
the multifunction screen
confi guration menu.
This function is activat-
ed by default.
Windscreen and headlamp
wash

 Pull the windscreen wiper stalk
towards you. The windscreen
wash then the windscreen
wipers operate for a fi xed period.

If the dipped headlamps are on
,
the headlamp washers operate at
the same time. Automatic windscreen wiping
The windscreen wipers operate au-
tomatically, without any action on the
part of the driver, if rain is detected
(sensor behind the interior mirror),
adapting their speed to the intensity
of the rainfall.
This is controlled manually by the
driver by pushing stalk
A to the

"AUTO" position.
It is accompanied by a message on
the multifunction screen. The automatic wiping must be re-
activated if the ignition has been off
for more than one minute, by push-
ing stalk
A downwards.
Operating fault
If an automatic wiping malfunction
occurs, the wipers will operate in in-
termittent mode.
Have it checked by a CITROËN
dealer. Do not cover the rain sensor, linked
with the brightness sensor and
located in the centre of the wind-
screen behind the interior mirror.
Switch off the automatic wip-
ing when using an automatic car
wash.
In winter, it is advisable to wait until
the windscreen is completely clear
of ice before activating the auto-
matic wiping.
Activation
Switching off
This is controlled manually by the
driver by moving stalk
A upwards
and returning it to position "0" .
It is accompanied by a message on
the multifunction screen.

114
S A F E T Y
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).
Flat 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 instru-
ment panel, accompanied
by an audible signal and
a message on the multi-
function screen locating
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 locating the wheel
concerned.
Stop immediately, avoiding any sudden
movement of the steering wheel and
the brakes.
Change the damaged wheel (punctured
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, ac-
companied by an audible
signal and a message 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. All repairs and changing of tyres
on a wheel fi tted with this system
must be carried out by a CITROËN
dealer.
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.
This system does not eliminate
the need to have the tyre pres-
sure checked regularly (refer to the
"Technical data - § Identifi cation
markings" section) to ensure that
the optimum dynamic perform-
ance 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 radio-electric
emissions 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.

149
IX
D R I V I N G
PARKING SPACE SENSOR
System which measures the parking
space available between two vehi-
cles or obstacles. It measures the
size of the space and gives you in-
formation on:
- the possibility of fi tting into a free space, depending on the dimensions
of your vehicle and the distances
necessary for your manoeuvring,
- the level of diffi culty of the ma-noeuvre to be performed.
The system does not measure spac-
es which are clearly much smaller or
larger than the size of the vehicle. Displays on 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 measuring
are not yet met (direction indi-
cator not operating, speed too
high) or the measuring phase is
terminated.
- fl ashing: the measuring is in
progress or the message is be-
ing displayed. You can select the "parking space
sensor" function by pressing button
A.
The fi xed lighting of the warning lamp
indicates that the function is selected.

150
IX
D R I V I N G
Operation
You have identifi ed a parking space:


Press button A to select the function.

 Activate the direction indicator
on the side where the space is to
be measured.

 During the measuring, go for-
ward the length of the space, at
a speed less than 12 mph (ap-
prox. 20 km/h), to prepare for
your manoeuvre.
The system then measures the size of the space.

 The system informs you of the level
of diffi culty of the manoeuvre via
a message on the multifunction
screen accompanied by a gong.

 Depending on the message is-
sued by the system, you may or
may not be able to perform the
manoeuvre.
Parking possible

Parking diffi cult

Parking not advised
The function displays the following
types of message: The function deselects itself auto-
matically:
- when you engage reverse gear,
- when you switch off the ignition,
- if measuring is not requested,
- within fi ve minutes of selection of
the function,
- if the vehicle speed exceeds the threshold of 45 mph (approx.
70 km/h) for one minute.
If there is a malfunction,
have the system checked
by a CITROËN dealer.
If the lateral distance between your
vehicle and the parking space is too
large, the system may not be able to
measure the space.
- The function remains available
after each measurement and
thus can measure more than
one space during your search.
- In bad weather conditions or in winter, make sure that the sen-
sors are not covered by dirt, or
by ice or snow.
- The parking space sensor func- tion deactivates the front park-
ing assistance during the space
measuring phase when you are
in forward gear.

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 (solid
or broken line).
Sensors, fi tted below the front
bumper, trigger a warning if the vehi-
cle 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 button A , the indicator
lamp comes on.
Deactivation

 Press button A again, the indicator
lamp 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 marking on the ground has been crossed on
the left.
No warning is transmitted while the direc-
tion indicator is active and for approxi-
mately 20 seconds after the direction
indicator is switched off.
A warning may be transmitted if a direc-
tion 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 on the multifunction screen.
Consult a CITROËN dealer.
The lane departure warning system
cannot, in any circumstances, re-
place the need for vigilance and res-
ponsibility 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.

152
IX
D R I V I N G
AUDIBLE AND/OR VISUAL REAR PARKING ASSISTANCE
System consisting of four proximity
sensors, located in the rear bumper.
This detects any obstacle (person,
vehicle, tree, gate, etc.) behind the
vehicle, except obstacles located
just below the bumper.
An object, such as a stake, a road-
works cone or any other similar ob-
ject may be detected at the begin-
ning of the manoeuvre, but may no
longer be detected when the vehicle
comes close to it.
If there is an operating fault, when reverse gear is en-gaged this warning lamp comes on in the instrument panel, accompanied by an audible signal (short beep) and a message on the multifunction screen.
In bad or wintry weather, ensure that the sensors are not covered with mud, frost or snow.
Programming
You can activate or deactivate the system by means of the multifunc-tion screen confi guration menu. The system state is memorised when switching off the ignition.
For more information on access to the parking assistance menu, refer to the section on vehicle confi guration for your screen under "Multifunction screens".
The system will be deactivated auto-matically when towing a trailer or when a bicycle carrier is fi tted (vehi-cle fi tted with a towbar or bicycle car-rier recommended by CITROËN). cle fi tted with a towbar or bicycle car-cle fi tted with a towbar or bicycle car-
The parking assistance system cannot, in any circumstances, take the place of the vigilance and res-ponsibility of the driver.
Activation
The system is activated as soon as reverse gear is engaged, accompa-nied by an audible signal. The proxi-mity information is given by:
- an audible signal, which beco-mes more rapid as the vehicle approaches the obstacle,
- a graphic on the multifunction screen, with blocks which be-come increasingly closer to the vehicle.
When the distance between the rear of the vehicle and the obstacle is less than thirty centimetres, the audible signal becomes continuous and the "Danger" symbol appears on the multifunction screen.
On completion of the manoeuvre, when you exit reverse gear, the system becomes inactive.
Operating faults

153
IX
D R I V I N G The parking assistance system
cannot, in any circumstances, re-
place the need for vigilance and
responsibility on the part of the
driver.
AUDIBLE AND VISUAL FRONT AND REAR PARKING ASSISTANCE
System consisting of four proximity
sensors, installed in the front and/or
rear bumper.
It detects any obstacle (person, ve-
hicle, tree, barrier...) located in front
of and behind the vehicle, except for
obstacles located immediately be-
low the bumper.
An object, such as a stake, a road-
works cone or any other similar ob-
ject may be detected at the start of
the manoeuvre but may no longer
be detected when the vehicle moves
nearer to it. The parking assistance is
switched
on :
- by engaging reverse gear,
- at a speed below 6 mph (10 km/h) in forward gear.
This is accompanied by an audible
signal and/or displaying of the vehi-
cle on the multifunction screen.
The proximity information is indicated
by:
- an audible signal which be- comes more rapid as the vehicle
approaches the obstacle,
- a diagram on the multifunction screen, with blocks which move
closer to the vehicle.
The obstacle is located in relation to
the emission of the audible signal by
the speakers; front or rear and right
or left.
When the distance between the vehicle
and the obstacle is less than approxi-
mately thirty centimetres, the audible
signal becomes continuous and/or the
"Danger" symbol appears, depending
on the multifunction screen version. The parking assistance is
switched
off :
- when you exit reverse gear,
- when the speed is higher than 6 mph (10 km/h) in forward gear,
- when the vehicle has been station- ary for more than three seconds in
forward gear.

154
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.
When the vehicle is being driven at
a speed below approximately 6 mph
(10 km/h), certain sources of noise
(motorcycles, lorries, pneumatic
drills...) may trigger the parking as-
sistance audible signals.

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

 Press button A , the warning lamp
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
Deactivation
If an operating fault occurs,
this warning lamp is displayed
on the instrument panel and/
or a message appears on the
multifunction screen, accompanied by
an audible signal (short beep), when
reverse gear is engaged.
Consult a CITROËN dealer.

159
X
C H E C K S
BLEEDING THE DIESEL FILTER
Protective cover
Removal

 Remove the protective cover by
unclipping fi rst point 1 , then 3
and 4 .

 Unclip point 2 pulling towards
you, then lift.
Refi tting

 Clip point 2 fi rst.

 Lower the cover, centring it.

 Clip points 1 and 4 , pushing ver-
tically and slightly rearwards.

 Clip point 3 , pushing vertically. Bleeding water from the fuel
filter
Bleed on a regular basis (at every
oil change).
To evacuate the water, slacken the
bleed screw or the water-in-diesel-
fuel sensor, which is located at the
base of the fi lter.
Persist until water ceases to fl ow
out.
Then retighten the bleed screw or
the water-in-diesel-fuel sensor.

173
XI
P R A C T I C A L I N F O R M A T I O N
Wheel for temporary use
If your vehicle is equipped with a
spare wheel for temporary use only,
when fi tting this it is normal to observe
that the wheel bolts do not come to
bear directly on the wheel rim.
The spare wheel is secured by the
conical tapering of the wheel bolt’s
shaft.
When refi tting the original wheel, en-
sure that the wheel bolts and wash-
ers are clean and in good condition. Fitting a wheel

 Position the wheel with the aid of
the centring guide 3 .

 Do up the 3 bolts by hand, then
remove the centring guide 3 .
Position the 4 th bolt.

 Pre-tighten the wheel bolts, us-
ing the wheelbrace 4 .


Retract the jack 5 and disengage it.

 Tighten the wheel bolts, using
the wheelbrace 4 .

 Ensure that the tyre pressure is
correct.
Defl ation detection
Such wheels have tyre pressure
sensors. It is essential to have re-
pairs carried out by a CITROËN
dealer. The spare wheel does not
have a sensor.
Security bolts (alloy wheels)
Each wheel may be equipped with
one security bolt.
To remove it:

 Remove the protector that is cov-
ering it by means of the tool for
removing the chrome covers 2 .

 Use the security bolt socket 6
with the wheelbrace 4 . Dimension of the spare
wheel
If your spare wheel has dimensions
different from those of the normal
vehicle wheels (identifi ed by a la-
bel), it is imperative to use the spare
wheel only temporarily, to drive
with caution, not to exceed 80 km/h
(50 mph) and to have the tyre re-
paired and the normal wheel refi tted
as soon as possible.
Tyre pressures
These are indicated on the label
on the front right-hand door pil-
lar (see section "Technical Data -
§ Identifi cation markings").
The wheel bolts are specif-
ic to each type of wheel.
If new wheels are fi tted,
check with your CITROËN dealer
that the wheel bolts are compat-
ible with the new wheels.
Note: take care to note down
the code number on the head of
the security bolt socket. This will
enable you to obtain a replace-
ment security bolt socket from a
CITROËN dealership.