2011 Citroen C4 RHD Owner's Manual

9
DRIVING
167
PARKING SENSORS
This system indicates the proximity of an
obstacle (person, vehicle, tree, gate, etc.)
which comes within the fi eld of detection
of sensors located in the bumper.
Certain types of obstacle (stake, road-
works cone, etc.) detected initially will
no longer be detected at the end of the
manoeuvre due to the presence of blind
spots.

This function cannot, in any cir-
cumstances, take the place of
the vigilance and responsibility
of the driver.
The system is switched on by engaging
reverse gear. This is accompanied by
an audible signal.
The system is switched off when you
exit reverse gear.

Audible assistance
The proximity information is given by an
intermittent audible signal, the frequency
of which increases as the vehicle ap-
proaches the obstacle.
The sound emitted by the speaker (right
or left) indicates the side on which the
obstacle is located.
When the distance between the vehicle
and the obstacle becomes less than
approximately thirty centimetres, the
audible signal becomes continuous.


Visual assistance
This supplements the audible signal
by displaying bars in the multifunction
screen which move progressively near-
er to the vehicle. When the obstacle is
near, the "Danger" symbol is also dis-
played in the screen.

9
DRIVING
168
In addition to the rear parking sensors,
the front parking sensors are triggered
when an obstacle is detected in front
and the speed of the vehicle is still below
6 mph (10 km/h).
The sound emitted by the speaker (front
or rear) indicates whether the obstacle
is in front or behind.
The front parking sensors are interrupted
if the vehicle stops for more than three
seconds in forward gear, if no further ob-
stacles are detected or when the speed
of the vehicle exceeds 6 mph (10 km/h).

Front parking sensors

Deactivation/Activation of the front
and rear parking sensors
The function is deactivated by pressing
this button. The indicator lamp in the
button comes on.
Pressing this button again reactivates
the function. The indicator lamp in the
button goes off.
Operating fault



The function will be deactivated
automatically if a trailer is being
towed or a bicycle carrier is fi t-
ted (vehicle fi tted with a towbar
or bicycle carrier recommended
by CITROËN).

In bad weather or in winter, en-
sure that the sensors are not
covered with mud, ice or snow.
When reverse gear is engaged,
an audible signal (long beep) in-
dicates that the sensors may be
dirty.
When the vehicle is moving at a
speed below 6 mph (10 km/h),
certain sound sources (motor-
cycle, lorry, pneumatic drill, etc.)
may trigger the audible signals
of the parking sensor system.
In the event of a malfunction
of the system, when reverse
gear is engaged this warn-
ing lamp is displayed in the
instrument panel and/or a message ap-
pears in the screen, accompanied by
an audible signal (short beep).
Contact a CITROËN dealer or a qualifi ed
workshop.

10
CHECKS
169

The strength of the partnership between TOTAL
and CITROËN is demonstrated in particular
through motor sport: from the 1969 Morocco Rally
to the superb double victory for TEAM CITROËN
TOTAL and Sébastien LOEB and Daniel ELENA
in the 2009 World Rally Championship. The
impressive list of awards for the two marques
has been built up through epic battles, fought in
extreme conditions. These trials permit arduous
testing of the TOTAL lubricants, assuring the
performance of CITROËN vehicles.

10
CHECKS
170
BONNET

)
Push the exterior safety catch B
to
the left and raise the bonnet.

Opening



)
Open the front left door.

)
Pull the interior bonnet release
lever A
, located at the bottom of the
door aperture.

)
Unclip the stay C
from its housing.

)
Fix the stay in the notch to hold the
bonnet open. The location of the interior bonnet
release lever prevents opening
of the bonnet while the front left
door is closed.
Closing


)
Take the stay out of the support
notch.

)
Clip the stay in its housing.

)
Lower the bonnet and release it at
the end of its travel.

)
Pull on the bonnet to check that it is
secured correctly.
When the engine is hot, handle
the exterior safety catch and the
bonnet stay with care (risk of
burns).





Before doing anything under
the bonnet, switch off the Stop
& Start system to avoid any risk
of injury resulting from an auto-
matic change to START mode.

10
171
RUNNING OUT OF FUEL(DIESEL)
If your vehicle is fi tted with an HDI engine,
the fuel system must be primed if you run
out of fuel; refer to the engine compart-
ment view on the "Diesel engine" page.

1.6 litre Turbo HDI engine



)
Fill the fuel tank with at least fi ve litres
of diesel.

)
Open the bonnet.

)
Squeeze and release the priming
pump repeatedly until it hardens (it
may be hard at the fi rst press).

)
Operate the starter until the engine
starts.

)
Close the bonnet.



)
Fill the fuel tank with at least fi ve litres
of Diesel.

)
Open the bonnet.

)
Unclip the style cover for access to
the priming pump.

)
Slacken the bleed screw.

)
Squeeze and release the priming
pump repeatedly until fuel appears
in the transparent pipe with the
green connector.

)
Retighten the bleed screw.

)
Operate the starter until the engine
starts.

)
Put the style cover back in position
and clip it in place.

)
Close the bonnet.
If the engine does not start fi rst
time, don't keep trying.
Operate the priming pump again,
then the starter motor.

10
172
PETROL ENGINES
The various caps and covers allow access for checking the levels of the various fl uids and for replacing certain components.


1.
Power steering reservoir.

2.
Screenwash and headlamp wash
reservoir.

3.
Coolant reservoir.
4.
Brake fl uid reservoir.

5.
Battery/Fuses.

6.
Fusebox.
7.
Air fi lter.

8.
Engine oil dipstick.

9.
Engine oil fi ller cap.

10
173
*
According to engine.
DIESEL ENGINES

The various caps and covers allow access for checking the levels of the various fl uids, for replacing certain components and
for priming the fuel system.


1.
Power steering reservoir.

2.
Screenwash and headlamp wash
reservoir.

3.
Coolant reservoir.
4.
Brake fl uid reservoir.

5.
Battery/Fuses.

6.
Fusebox.

7.
Air fi lter.
8.
Engine oil dipstick.

9.
Engine oil fi ller cap.

10.
Priming pump * .

11 .
Bleed screw * .

10
CHECKS
174
CHECKING LEVELS
Check all of these levels regularly and
top them up if necessary, unless other-
wise indicated.
If a level drops signifi cantly, have the corre-
sponding system checked by a CITROËN
dealer or a qualifi ed workshop.

When working under the bon-
net, take care, as certain areas
of the engine may be extremely
hot (risk of burns).

The reading will only be correct if
the vehicle is on level ground and
the engine has been off for more
than 30 minutes.
The check is carried out either when the igni-
tion is switched on using the oil level indicator
in the instrument panel, or using the dipstick.

Oil level


Engine oil change
Refer to the Maintenance and Warranty
Guide for the interval for this operation.
In order to maintain the reliability of the
engine and emission control system,
the use of additives in the engine oil is
prohibited.

Oil specifi cation
The oil must correspond to your engine
and conform to the manufacturer's rec-
ommendations.



Brake fluid level

The brake fl uid level should be
close to the "MAX" mark. If it is
not, check the brake pad wear.

Changing the fl uid
Refer to the Maintenance and Warranty
Guide for the interval for this operation.

Fluid specifi cation
The brake fl uid must conform to the
manufacturer's recommendations and
meet the DOT4 standard.



Power steering fluid level

The power steering fl uid level
should be close to the "MAX"
mark. Unscrew the cap, with the
engine cold, to check the level.
Coolant level

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 operate with the igni-
tion off.

On vehicles which are fi tted with a par-
ticle emission fi lter, the fan may operate
after the vehicle has been switched off,
even if the engine 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, unscrew
the cap by two turns to allow the pres-
sure to drop. When the pressure has
dropped, remove the cap and top up
the level.

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

Coolant specifi cation
The coolant must conform to the manu-
facturer's recommendations.