sensor CITROEN C4 2007 Owners Manual

42
III
C O M F O R T
Air conditioning
To ensure that your system operates
correctly, it is recommended to have
it checked regularly.
Water arising from condensation
in the air conditioning drains away
through a hole provided for this pur-
pose. A pool of water may thus form
under the vehicle when stationary.
To keep the air conditioning com-
pressor well sealed, it is essential to
operate the air conditioning at least
once in every month.
Regardless of the season, the air
conditioning is useful, since it re-
moves humidity and condensation.
To be effective, the air conditioning
should only be used with the windows
closed.
If after a lengthy stop in bright sunlight
the interior temperature is excessive,
ventilate the passenger compartment
by opening the windows for a few
moments, then close them again.
The air conditioning operates by using
power from the engine. This results in
a slight increase in fuel consumption.
Dust filter/Odour filter
(active carbon)
There is a fi lter for excluding odours
and dust.
This fi lter has to be changed in ac-
cordance with the vehicle servicing
schedule (see "Maintenance and
Warranty Guide").
Air circulation
Maximum comfort is obtained when
there is a good distribution of air in
the passenger compartment, both in
the front and in the rear.
For optimum operating effi ciency,
take care not to obstruct the air out-
lets under the front seats.
Air vents
The face-level air vents have grilles
and thumbwheels to adjust the air fl ow
and direction (up-down, right-left).
The automatic regulation of the air
conditioning, inside the cabin, uses
the sunlight sensor located on the
dashboard behind the instrument
panel.
Be careful not to obstruct it.
Sensor

71
V I S I B I L I T Y
V

C. Foglamps selection ring.
The foglamps operate with the side-
lamps and the dipped and main
beam headlamps.
- 1 st turn forwards: rear foglamp on.
-
1 st turn rearwards: rear foglamp off.
- 1 st turn forwards: front foglamps on.
-
2 nd turn forwards: rear foglamps on.
-
1 st turn rearwards: rear foglamps off.
-
2 nd turn rearwards: front foglamps off.
Model with rear foglamp only Model with front and rear
foglamps In good or rainy weather, both day
and night, the front foglamps and the
rear foglamp are prohibited. In these
situations, the power of their beams
may dazzle other drivers. They
should only be used in fog or snow.
In these weather conditions, it is
your responsibility to switch on the
foglamps and dipped headlamps
manually as the brightness sensor
may detect suffi cient light.
Do not forget to switch off the front
foglamps and the rear foglamp when
they are no longer necessary.
Lighting on buzzer
The triggering of an audible signal
when a front door is opened warns the
driver that he has forgotten to switch
off his vehicle's lamps, with the igni-
tion off and in manual lighting mode.
In this case, switching off the lamps
stops the audible signal.
With the ignition off, if the dipped
headlamps remain on, they will
switch off automatically after thirty
minutes to prevent discharging of
the battery.

73
V I S I B I L I T Y
V
Automatic lighting
The sidelamps and dipped head-
lamps are switched on automatically,
without any action on the part of the
driver, when a low level of external
light is detected or in certain cases of
activation of the windscreen wipers.
As soon as the brightness returns
to a suffi cient level or after the wind-
screen wipers are switched off, the
lights are switched off automatically.
Activation

 Turn ring A to the "AUTO" posi-
tion. The automatic lighting is ac-
companied by a message on the
multifunction screen.
Deactivation

 Turn ring A to a position other
than "AUTO" . Deactivation is
accompanied by a message on
the multifunction screen. Linking with the automatic
"Guide-me-home" lighting
Association with the automatic light-
ing provides the "guide-me-home"
lighting with the following additional
options:
- selection of the lighting duration
for 15, 30 or 60 seconds in the
vehicle parameters on the mul-
tifunction screen confi guration
menu (in the case of the mono-
chrome screen A, the duration is
fi xed),
- automatic activation of "guide-me- home" lighting when automatic
lighting is in operation.
Operating fault
In the event of a malfunction of
the brightness sensor, the lighting
comes on, a message appears on
the multifunction screen, accompa-
nied by an audible signal.
Consult a CITROËN dealer. In fog or snow, the brightness
sensor may detect suffi cient light.
Therefore, the lights will not come
on automatically.
Do not cover the brightness sen-
sor, linked with the rain sensor and
located in the centre of the wind-
screen behind the interior mirror;
the associated functions would no
longer be controlled. MANUAL ADJUSTMENT OF THE HEADLAMPS
To avoid dazzling other road users,
the height of the halogen bulb head-
lamps must be adjusted according
to the load in the vehicle.
To do this, turn the control, located
below the fascia to the right of the
driver, to the appropriate position:

0.
1 or 2 people in the front seats.

-.
3 people.

1.
5 people.

-.
Intermediate setting.

2.
5 people + maximum authorised
loads.

-.
Intermediate setting.

3.
Driver + maximum authorised loads.
Initial setting is position "0".
On vehicles fi tted with xenon bulbs
the height of the headlamps is ad-
justed automatically.

73
V I S I B I L I T Y
V
Automatic lighting
The sidelamps and dipped head-
lamps are switched on automatically,
without any action on the part of the
driver, when a low level of external
light is detected or in certain cases of
activation of the windscreen wipers.
As soon as the brightness returns
to a suffi cient level or after the wind-
screen wipers are switched off, the
lights are switched off automatically.
Activation

 Turn ring A to the "AUTO" posi-
tion. The automatic lighting is ac-
companied by a message on the
multifunction screen.
Deactivation

 Turn ring A to a position other
than "AUTO" . Deactivation is
accompanied by a message on
the multifunction screen. Linking with the automatic
"Guide-me-home" lighting
Association with the automatic light-
ing provides the "guide-me-home"
lighting with the following additional
options:
- selection of the lighting duration
for 15, 30 or 60 seconds in the
vehicle parameters on the mul-
tifunction screen confi guration
menu (in the case of the mono-
chrome screen A, the duration is
fi xed),
- automatic activation of "guide-me- home" lighting when automatic
lighting is in operation.
Operating fault
In the event of a malfunction of
the brightness sensor, the lighting
comes on, a message appears on
the multifunction screen, accompa-
nied by an audible signal.
Consult a CITROËN dealer. In fog or snow, the brightness
sensor may detect suffi cient light.
Therefore, the lights will not come
on automatically.
Do not cover the brightness sen-
sor, linked with the rain sensor and
located in the centre of the wind-
screen behind the interior mirror;
the associated functions would no
longer be controlled. MANUAL ADJUSTMENT OF THE HEADLAMPS
To avoid dazzling other road users,
the height of the halogen bulb head-
lamps must be adjusted according
to the load in the vehicle.
To do this, turn the control, located
below the fascia to the right of the
driver, to the appropriate position:

0.
1 or 2 people in the front seats.

-.
3 people.

1.
5 people.

-.
Intermediate setting.

2.
5 people + maximum authorised
loads.

-.
Intermediate setting.

3.
Driver + maximum authorised loads.
Initial setting is position "0".
On vehicles fi tted with xenon bulbs
the height of the headlamps is ad-
justed automatically.

76
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 activated
or deactivated via the
multifunction screen con-
fi guration menu.
This function is activated
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 auto-matically, 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.
Activation
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. 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.
The automatic wiping must be reac-
tivated if the ignition has been off for
more than one minute, by pushing
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 wiping
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.

96
VIII
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 instru-
ment panel, accompanied
by an audible signal and
a message on the multi-
function screen locating
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, 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 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 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.

120
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 indica-
tor 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 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
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,
accompanied by an audible signal
and a message on the multifunction
screen.
Consult a CITROËN dealer.
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.

121
IX
D R I V I N G
VISUAL AND AUDIBLE FRONT AND/OR 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 behind
the vehicle, however, it will not be
able to detect obstacles located im-
mediately below 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
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 sta- tionary for more than three sec-
onds in forward gear.
The parking assistance system
cannot, in any circumstances, re-
place the need for vigilance and
responsibility on the part of the
driver.
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 ve-
hicle and the obstacle is less than
approximately thirty centimetres, the
audible signal becomes continuous
and/or the "Danger" symbol appears,
depending on the multifunction screen
version.

122
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 sourc-
es of noise (motorcycles, lorries,
pneumatic drills, ...) may trigger the
reversing audible signal.
Reactivation

 Press button A again, the warning
lamp switches off, the system is
reactivated.
Deactivation Operating fault
If an operating fault occurs, this warn-
ing lamp is displayed on the instrument
panel and/or a message appears on
the multifunction screen, accompa-
nied by an audible signal (short beep),
when reverse gear is engaged.
Consult a CITROËN dealer.

 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).

125
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.