cooling Citroen DS3 2011.5 1.G Owner's Manual

39Monitoring
Warning lampis onCauseAction/Observations
Engineautodiagnosis system
flashing. The engine management system has a fault.Risk of destruction of the catalytic conver ter.
Have it checked by a CITROËN dealer or a qualified workshop.
fixed. The emission control system has a fault.The warning lamp should go off when the engine is started.
If it does not go off, contact a CITROËN dealer or qualified workshop without delay.
Low fuel levelfixed. When it first comes on there remains approximately 5 litres offuelin thetank. You must refuel as soon as possible to avoid runnin
gout of fuel.
This warning lamp will come on every time the ignition is
switched on, until a sufficient addition of fuel is made.
Fuel tank capacity: approximately 50 litres (petrol) or
46 litres (Diesel); depending on version: approximately 30 litres (petrol or Diesel).
Never continue to drive until you run out of fuel as
this could damage the emission control and injection
systems.
Maximum coolanttemperaturefixed 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 toppingup the level, if necessary.
If the problem persists, contact a CITROËN dealer or qualified workshop.

With the engine running, when the needle is:
- in zone A
, the temperature is correct,
- in zone B, the temperature is too high;
the central STOP
warning lamp and themaximum temperature warning lamp 1
come
on in red, accompanied by an audible signal and a message in the multifunction screen. You must stop as soon as it is safe to do so.Wait a few minutes before switching off
the engine.
Contact a CITROËN dealer or a
qualified
workshop.
Coolant temperature indicator
After driving for a few minutes, the temperature
and pressure in the cooling system increase.
To top up the level:
)
wait for the engine to cool down, )
unscrew the cap by two turns to allow the
pressure to drop,
) when the pressure has dropped, remove
the cap,) top up the level to the "MAX" mark.

Vent ilat ion
Air intake
The air circulating in the passenger compar tment
is filtered 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 routesdepending on the controls selected by
the driver:
- direct arrival in the passenger compartment (air intake),
- passage through a heating circuit (heating),
- passage through a cooling circuit (air conditioning).The temperature control enables you to obtain
the level of comfor t required by mixing the air of
the various circuits.
The air distribution control enables you to
di
ffuse the air in the passenger compar tment combining several air vents.
The air flow control enables you to increase or reduce the speed of the ventilation blower.


Control panel

The controls of this system are grouped
together on control panel Aon the centre console. Depending on the model, the functionsoffered are:


- the level of comfort required,

- air flow,

- air distribution,

- demistin
g-defrosting,

- manual or digital air conditioning controls.



Air distribution
1.
Windscreen demisting-defrosting vents. 2.Front side window demisting-defrostingvents.3.Side adjustable air vents. 4.
Central adjustable air vents.
5. Air outlets to the front footwells.
6.Air outlets to the rear footwells.

It is possible to adjust one or more functionsmanually while leaving the other functions in automatic mode.
The "AUTO"
symbol switches off.
To return to automatic mode, press the "AUTO"button.
Manual override

4. Air conditioning on/off

For maximum cooling or heating of the cabin, it is possible to go beyond the minimum 14 or maximum 28 values.)Press the blue button 2
until "LO"is displayed or the red button 2
until"HI"
is displayed. Pr
ess this button to switch off the air conditioning.

Stopping the air conditioning maycause some problems (humidity,
misting).
Automatic operation of the air conditioning isresumed when the button is pressed again. The
symbol "A/C"is displayed.


5. Air intake/Air recirculation
Press this button for recirculation of
the interior air. The air recirculation symbol 5is displayed.

Air recirculation enables the passenger compartment to be isolated from exterior odours and smoke.
Press this button again or press the "AU TO "
button to resume automatic management of
the intake of air. The air recirculation symbol 5goes off.
Avoid prolonged recirculation of interior air (risk of condensation or deterioration of the air quality).

Switching to manual mode may not besuitable (temperature, humidity, odour,condensation) and does not provide optimum comfort.

Changing the coolant

The coolant does not have to be changed.


Fluid specifi cation

The coolant must conform to the
manufacturer's recommendations.



Screenwash fluid level


Fluid specifi cation

For optimum cleaning and to avoid freezing,
this fluid must not be topped up or replaced
with plain water.

Take care when carrying out checks under the bonnet as some parts of theengine can be very hot (risk of burns).

Coolant level
Top up the level when necessary.
Th
e coolant level should be close
to the "MA X" 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 ignition off.
On vehicles which are fitted with a particle emission filter, the fan may operate after
the vehicle has been switched off, even if
the en
gine 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 pressure to drop.
When the pressure has dropped, remove the
cap and top up the level.

Fuse table
Fuse N°RatingFunctions
F120 A Engine control unit supply, cooling fan unit control relay, multifunction engine control main relay, injection pump(Diesel).
F
215 A Horn.
F
310 A Front/rear wash-wipe.
F420 A LED lamps.
F
515 A Diesel heater (Diesel), particle filter additive pump (Diesel), air flow sensor (Diesel), EGR electrovalve (Diesel),
blow-by heater and electrovalves (VTi).
F
610 A ABS/ESP control unit, secondary stop switch.
F
710 A Electric power steering, automatic gearbox.
F
825 A Starter control.
F9
10 A Switching and protection unit (Diesel).
F10
30 A Fuel heater (Diesel), blow-by heater (Diesel), fuel pump (VTi), injectors and ignition coils (petrol).
F1140 A Heater blower.

Table of maxi-fuses
Fuse N°RatingFunctions
MF1*60 A Fan assembly.
MF2*30 A ABS/ESP pump.
MF3 * 30 A ABS/ESP electrovalves.
MF4 * 60 A
Built-in Systems Interface (BSI) supply.
MF5 * 60 A
Built-in Systems Interface (BSI) supply.
MF6 * 30 A Additional cooling fan unit (THP).
MF7 *80 A
Dashboard fusebox.
MF
8 *- Not used.
*
The maxi-fuses provide additional protection for the electrical s
ystems. All work on the maxi-fuses must be carried out by a CITROËN dealer or a qualified workshop.

The rear parking sensors will be deactivated automatically if a genuineCITROËN towbar is used.
Cooling
Towing a trailer on a slope increases the
temperature of the coolant.
As the fan is electrically controlled, its coolingcapacity is not dependent on the engine speed. )To lower the engine speed, reduce your
speed.
The maximum towed load on a long incline depends on the gradient and the ambient
temperature.
In all cases, keep a check on the coolant
temperature.
Braking
To w i ng a trailer increases the braking distance.
To avoid overheating of the brakes on a longmountain type of descent, the use of engine braking is recommended.

Tyres
)
Check the tyre pressures of the towing
vehicle and of the trailer, obser ving the
recommended pressures.

Lighting
)
Check the electrical lighting and signallingon the trailer.
)
If the warning lamp and the
STOPwarning lamp come on,
stop the vehicle and switch off
the engine as soon as possible.

RACING towbar

Your vehicle cannot be fitted with a towbar. The space occupied by thesport diffuser prevents this.