2010 Citroen C4 sensor
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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 activat-
ed or deactivated via
the multifunction screen
c o n fi g u r a t i o n m e n u .
This function is activated
by default.
Windscreen and headlamp
wash
Pull the windscreen wiper stalk
towards you. The windscreen
wash then the windscreen wipers
o p e r a t e f o r a fi x e d p e r i o d .
If the dipped headlamps are on ,
the headlamp washers operate at
the same time. Automatic rain sensitive
windscreen wipers
The windscreen wipers operate au-
tomatically, without any action on the
part of the driver, if rain is detected
( s e n s o r b e h i n d t h e r e a r v i e w m i r r o r ) ,
adapting their speed to the intensity
of the rainfall.
Activation
This is controlled manually by the
driver by pushing the stalk down-
wards 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 the stalk upwards
then returning it to position
"0" .
It is accompanied by a message on
the multifunction screen.
The automatic rain sensitive wipers
must be reactivated if the ignition has
been off for more than one minute, by
pushing the stalk 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 sunshine sensor and locat-
ed in the centre of the windscreen
behind the rear view mirror.
Switch off the automatic rain sensi-
tive wipers when using an automatic
car wash.
In winter, to avoid damaging the
wiper blades, it is advisable to wait
until the windscreen is completely
clear of ice before activating the
automatic rain sensitive wipers.
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96
VIII
S A F E T Y
TYRE UNDER-INFLATION DETECTION
S e n s o r s fi t t e d i n e a c h v a l v e c h e c k
the tyre pressure during driving and
trigger a warning in the event of
malfunction (speed above 12 mph
(20 km/h)).
U n d e r - i n fl a t e d t y r e T h e t y r e u n d e r - i n fl a t i o n d e t e c t i o n
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 (punctured
o r v e r y d e fl a t e d t y r e ) , a n d h a v e t h e t y r e
pressure checked as soon as possible.
S e n s o r ( s ) n o t d e t e c t e d o r f a u l t y
The service warning lamp
comes on in the instrument
panel, accompanied by an
audible signal and a mes-
sage 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
o n a w h e e l fi t t e d w i t h t h i s s y s t e m
must be carried out by a CITROËN
dealer.
If, when changing a tyre, you in-
stall a wheel which is not detected
b y y o u r v e h i c l e ( e x a m p l e : fi t t i n g
of snow tyres), you must have the
system reinitialised by a CITROËN
dealer.
This system does not avoid the
need to have the tyre pressures
checked regularly (refer to the
" T e c h n i c a l d a t a - § I d e n t i fi c a t i o n
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.
T h e t y r e u n d e r - i n fl a t i o n d e t e c t i o n
s y s t e m m a y e x p e r i e n c e t e m p o r a r y
interference due to electro-mag-
netic signals 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
s e n s o r a r e fi t t e d .
T h e s p a r e w h e e l i s n o t fi t t e d w i t h a
sensor.
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120
IX
D R I V I N G
LANE DEPARTURE WARNING SYSTEM
System which detects the involun-
t a r y c r o s s i n g o f l o n g i t u d i n a l t r a f fi c
lane markings on the ground (solid
or broken line).
S e n s o r s , fi t t e d b e l o w t h e f r o n t b u m -
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 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 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
n o n - s t a n d a r d m a r k i n g ( e . g . g r a f fi t i )
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 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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IX
D R I V I N G
VISUAL AND AUDIBLE FRONT AND/OR REAR PARKING SENSORS
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 sensors are
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.
The parking sensor system cannot,
in any circumstances, replace the
need for vigilance and responsibility
on the part of the driver.
The parking sensors are
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 display of the vehicle on
the multifunction screen.
The proximity information is indica-
ted 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.
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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
parking sensor audible signals.
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 t t e d ( v e h i c l e fi t t e d w i t h a t o w b a r
or bicycle carrier recommended by
CITROËN).
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125
X
C H E C K S
BLEEDING THE DIESEL FILTER
Protective cover
Removal
Remove the protective cover by
u n c l i p p i n g fi r s t p o i n t 1 , then 3
and 4 .
Unclip point 2 pulling towards
you, then lift.
R e fi t t i n g
Clip point 2 fi r s t .
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
b a s e o f t h e fi l t e r .
C o n t i n u e u n t i l w a t e r c e a s e s t o fl o w
out.
Then retighten the bleed screw or
the water-in-diesel-fuel sensor.
Page 182 of 284
156
XI
P R A C T I C A L I N F O R M A T I O N
TOWING A TRAILER,A CARAVAN, ETC.
Towbar suitable for the attachment
of a trailer or caravan with additional
l i g h t i n g a n d s i g n a l l i n g .
Y o u r v e h i c l e i s p r i m a r i l y d e s i g n e d
for transporting people and luggage,
b u t i t m a y a l s o b e u s e d f o r t o w i n g a
t r a i l e r . I f t h e t r a i l e r i s n o t fi t t e d b y
a CITROËN dealer, it is im-
p e r a t i v e t h a t i t i s fi t t e d u s -
ing the electrical pre-equipment
installed at the rear of the vehicle,
in accordance with the manufactur-
e r ' s i n s t r u c t i o n s .
Driving advice
Distribution of loads
D i s t r i b u t e t h e l o a d i n t h e t r a i l e r
so that the heaviest items are as
close as possible to the axle and
the nose weight approaches the
maximum permitted without ex-
c e e d i n g i t .
A i r d e n s i t y d e c r e a s e s w i t h a l t i t u d e ,
t h u s r e d u c i n g e n g i n e p e r f o r m a n c e .
Above 1 000 metres, the maximum
t o w i n g l o a d m u s t b e r e d u c e d b y 1 0 %
a n d s o o n f o r e v e r y 1 0 0 0 m e t r e s o f
a l t i t u d e .
R e f e r t o t h e " T e c h n i c a l D a t a " s e c t i o n
for details of the weights and towing
l o a d s w h i c h a p p l y t o y o u r v e h i c l e .
Side wind
Take into account the increased
s e n s i t i v i t y t o s i d e w i n d . Cooling
Towing a trailer on a slope increases
t h e t e m p e r a t u r e o f t h e c o o l a n t .
A s t h e f a n i s e l e c t r i c a l l y c o n t r o l l e d ,
i t s c o o l i n g c a p a c i t y i s n o t d e p e n d e n t
o n t h e e n g i n e s p e e d .
To lower the engine speed, reduce
y o u r s p e e d .
The maximum towing load on a long
slope depends on the gradient and
t h e a m b i e n t t e m p e r a t u r e .
I n a l l c a s e s , p a y a t t e n t i o n t o t h e
c o o l a n t t e m p e r a t u r e .
If the warning lamp and
the STOP warning lamp
come on, stop the vehicle
and switch off the engine
a s s o o n a s p o s s i b l e .
Braking
Towing a trailer increases the braking
d i s t a n c e .
Tyres
C h e c k t h e t y r e p r e s s u r e s o f t h e
towing vehicle and of the trailer,
observing the recommended
p r e s s u r e s .
Lighting
Check the electrical lighting and
s i g n a l l i n g o n t h e t r a i l e r .
The rear parking sensors will be de-
a c t i v a t e d a u t o m a t i c a l l y i f a g e n u i n e
C I T R O Ë N t o w b a r i s u s e d .
We recommend the use of genuine
CITROËN towbars and their har-
nesses that have been tested and
approved from the design stage
o f y o u r v e h i c l e , a n d t h a t t h e fi t -
ting of the towbar is entrusted to a
C I T R O Ë N d e a l e r . D r i v i n g w i t h a t r a i l e r s u b j e c t s t h e
t o w i n g v e h i c l e t o m o r e s i g n i fi c a n t
stress and its driver must be particu-
l a r l y c a r e f u l .