2012 Citroen C4 cooling

1
MONITORING
33









Warning and indicator lamps

Visual indicators which inform the driver of the occurrence of a malfunction (warn-
ing lamp) or of the operation of a system (operation or deactivation indicator
lamp).

When the ignition is switched on
Certain warning lamps come on for a few seconds when the ignition is switched on.
When the engine is started, these warning lamps should go off.
If they remain on, before moving off, refer to the information on the warning lamp in
question.

Associated warnings
The illumination, fi xed or fl ashing, of certain warning lamps may be accompanied
by an audible signal and a message in the multifunction screen or in the instru-
ment panel central screen associated with the satellite navigation system.

Warning lamps

When the engine is running or the vehicle is being driven, the illumination of one of the follow-
ing warning lamps indicates a malfunction which requires action on the part of the driver.
The warning comes on in the instrument panel or appears in the instrument panel central
screen associated with the satellite navigation system.
If your vehicle has a screen, a
warning lamp coming on is al-
ways accompanied by the dis-
play of an additional message,
to assist you in identifying the
problem.
If you encounter any problems,
do not hesitate to contact a
CITROËN dealer or a qualifi ed
workshop.



Warning lamp



is on



Cause



Action/Observations








STOP


fi xed, alone
or associated
with another
warning lamp,
accompanied by
an audible signal
and a message in
the screen. Illumination of this warning
lamp is associated with
a serious braking system,
power steering, engine
lubrication or cooling system
malfunction or a punctured
tyre. Stop as soon as it is safe to do so as
there is a risk that the engine will cut out
while driving.
Park, switch off the ignition and contact a
CITROËN dealer or a qualifi ed workshop.






Maximum
coolant
temperature


fi xed red. The temperature of the
cooling system is too high. Stop as soon as it is safe to do so.
Wait until the engine has cooled down
before topping up the level, if necessary.
If the problem persists, contact a
CITROËN dealer or qualifi ed workshop.

3
COMFORT
63








VENTILATION

Air intake

The air circulating in the passenger com-
partment is fi ltered and originates either
from the outside via the grille located at
the base of the windscreen or from the
inside in air recirculation mode.


Air treatment

The incoming air follows various routes
depending on the controls selected by
the driver:


- direct arrival in the passenger com-
partment (air intake),

- passage through a heating circuit
(heating),

- passage through a cooling circuit
(air conditioning).



Control panel

The controls of this system are grouped
together on control panel A
on the centre
console.


Air distribution



1.
Windscreen demisting-defrosting vents.


2.
Front side window demisting-defrost-
ing vents.

3.
Side adjustable air vents.

4.
Central adjustable air vents.

5.
Air outlets to the front footwells.

6.
Air nozzles to the front footwells.

7.
Air outlets to the rear footwells.

3
COMFORT
68

7. Air fl ow adjustment


)
Turn this control to the left
to decrease the air fl ow or
to the right to increase the
air fl ow.
The air fl ow indicator lamps, between
the two fans, come on progressively in
relation to the value requested. For maximum cooling or heating
of the passenger compartment,
it is possible to exceed the mini-
mum value 14 or the maximum
value 28.


)
Turn control 2
or 3
to the left
until "LO"
is displayed or
to the right until "HI"
is dis-
played.

See "Front demisting - defrosting".



4. Automatic visibility programme


Manual operation

If you wish, you can make a different
choice from that offered by the system
by changing a setting. The the "AUTO"

indicator lamps go off; the other func-
tions will still be controlled automati-
cally.


)
Pressing the "AUTO"
button returns
the system to completely automatic
operation.

5. Air conditioning On/Off


)
Press this button to switch
off the air conditioning.
Switching the system off could result in
discomfort (humidity, condensation).


)
Press this button again to return to
automatic operation of the air con-
ditioning. The indicator lamp on the
"A/C"
button comes on.


)
Press one or more but-
tons to direct the air fl ow
towards:
6. Air distribution adjustment


- the windscreen and side windows
(demisting or defrosting),

- the outer and centre air vents,

- the footwells.

You can combine the three orientations
to obtain the desired air distribution.
2. Driver's side adjustment
The driver and front pas-
senger can each adjust the
temperature to their require-
ments.


)
Turn control 2
or 3
to the left or to
the right respectively to decrease or
increase this value.
A setting around the value 21 provides
optimum comfort. However, depend-
ing on your requirements, a setting be-
tween 18 and 24 is normal.
You are advised to avoid a left/right set-
ting difference of more than 3.
3. Passenger's side adjustment
The value indicated on the display cor-
responds to a level of comfort and not
to a temperature in degrees Celsius or
Fahrenheit.






With Stop & Start, when dem-
isting has been activated, the
STOP mode is not available.
8. Air intake/Air recirculation


)
Press this button for recir-
culation of the interior air.
The indicator lamp in the
button comes on.
Air recirculation enables the passenger
compartment to be isolated from exte-
rior odours and smoke.


)
As soon as possible, press this but-
ton again to permit the intake of out-
side air and prevent the formation of
condensation. The indicator lamp in
the button goes off.

10
CHECKS
184

























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
corresponding system checked by a
CITROËN dealer or a qualifi ed work-
shop.

When working under the bonnet,
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
ignition is switched on using the oil level
indicator in the instrument panel, or using
the dipstick.
It is normal to top up the oil level between
two services. CITROËN recommends that
you check the oil level, and top up if neces-
sary, every 3 000 miles (5 000 kilometres).

Oil level


Engine oil change
Refer to the servicing booklet 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 servicing booklet 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 ig-
nition off.

On vehicles which are fi tted with a par-
ticle emission fi lter, the fan may oper-
ate 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.

11
PRACTICAL INFORMATION
210








VERY COLD CLIMATE SCREEN *


*
According to country.


Fitting



)
Offer up the very cold climate screen
to the front of the lower section of
the front bumper.

)
Press around its edge to engage its
fi xing clips one by one.



Removal



)
Use a screwdriver as a lever to re-
lease each fi xing clip in turn.
Do not forget to remove the very
cold climate screen:


- when the ambient temperature
exceeds 10 °C,

- when towing,

- at speeds above 75 mph
(120 km/h).
Removable protective screen which
prevents the accumulation of snow at
the radiator cooling fan.











FITTING ROOF BARS


For safety reasons and to avoid dam-
aging the roof, it is essential to use the
transverse bars approved for your ve-
hicle.

When fi tting roof bars, use only the four
fi xing points located in the roof frame.
The points are masked by the vehicle
doors when closed.
The roof bar fi xings include a stud to be
fi tted to the hole at each fi xing point.
Observe the fi tting instructions and the
conditions of use in the guide supplied
with the bars.
Maximum authorised weight on
the roof rack, for a loading height
not exceeding 40 cm (with the ex-
ception of bicycle carriers): 55 kg.
As this value is subject to change,
check the maximum load fi gure
given in the guide provide d with
the roof bars.
If the height exceeds 40 cm,
adapt the speed of the vehicle
to the profi le of the road to avoid
damaging the roof bars and the
fi xings on the vehicle.
Be sure to refer to national legis-
lation in order to comply with the
regulations for transporting ob-
jects which are longer than the
vehicle.

11
PRACTICAL INFORMATION
213





TOWING A TRAILER,
A CARAVAN, ETC.
We recommend the use of genu-
ine CITROËN towbars and their
harnesses that have been tested
and approved from the design
stage of your vehicle, and that
the fi tting of the towbar is en-
trusted to a CITROËN dealer or
a qualifi ed workshop.
If the towbar is not fi tted by a
CITROËN dealer, it is impera-
tive that it is fi tted in accordance
with the vehicle manufacturer's
instructions. The rear parking sensors will
be deactivated automatically if
a genuine CITROËN towbar is
used.

Towbar suitable for the attachment of a
trailer or caravan with additional lighting
and signalling.
Your vehicle is primarily designed for
transporting people and luggage, but it
may also be used for towing a trailer. Driving with a trailer places greater de-
mands on the towing vehicle and the
driver must take particular care.


Driving advice


Distribution of loads


)
Distribute the load in the trailer so
that the heaviest items are as close
as possible to the axle and the nose
weight approaches the maximum
permitted without exceeding it.
Air density decreases with altitude, thus
reducing engine performance. Above
1 000 metres, the maximum towed load
must be reduced by 10 % for every
1 000 metres of altitude.
Refer to the "Technical Data" section for
details of the weights and towed loads
which apply to your vehicle.

Side wind


)
Take into account the increased
sensitivity to side wind.


Cooling
Towing a trailer on a slope increases
the temperature of the coolant.
As the fan is electrically controlled, its
cooling capacity is not dependent on
the engine speed.


)
To lower the engine speed, reduce
your speed. The maximum towed load on a long in-
cline depends on the gradient and the
ambient temperature.
In all cases, keep a check on the cool-
ant temperature.


)
If the warning lamp and the
STOP
warning lamp come
on, stop the vehicle and
switch off the engine as
soon as possible.


Braking
Towing a trailer increases the braking
distance.
To avoid overheating of the brakes on a
long mountain type of descent, the use
of engine braking is recommended.

Tyres


)
Check the tyre pressures of the towing
vehicle and of the trailer, observing the
recommended pressures.


Lighting


)
Check the electrical lighting and sig-
nalling on the trailer.