2012 Citroen DS4 Owner's Manual

79Comfort










Recommendations for ventilation and air conditioning


If after an extended stop in sunshine, the interior temperature is veryhigh, first ventilate the passenger compartment for a few moments. Put the air flow control at a setting high enough to quickly change the air in the passenger compartment.
The air conditioning system does notcontain chlorine and does not present any danger to the ozone layer.

In order for these systems to be fully effective, follow the operation and maintenance guidelines below: )
To obtain an even air distribution, take care not to obstruct the exterior air intake grilles located at the base of the windscreen, the nozzles, the vents and the air outlets, as wellas the air extractor located in the boot. )
Do not cover the sunshine sensor, located on the dashboard; this is used for regulation of the digital air conditioning system. )
Operate the air conditioning system for at least 5 to 10 minutes, once or twice a monthto keep it in per fect working order. )
Ensure that the passenger compar tment filter is in good condition and have the filter elements replaced regularly (refer to the "Checks" section). We recommend the use of a combined passenger compartment filter. Thanks to its special active additive, it contributes to the purification of the air breathed by theoccupants and the cleanliness of the passenger compartment (reduction of allergic symptoms, bad odours and greasy deposits).)
To ensure correct operation of the air conditioning system, you are also advised to haveit checked regularly as recommended in the ser vicing booklet.
)
If the system does not produce cold air, switch it off and contact a CITROËN dealer or a qualified workshop.
When towing the maximum load on a steep gradient in high temperatures, switching off theair conditioning increases the available engine power and so improves the towing ability.


The condensation created by the air conditioning results in a dischargeof water under the vehicle which is perfectly normal.




Stop & Start
The heating and air conditioning systems only work when the engine is running. To maintaina comfor table temperature in the passenger compartment, you can temporarily deactivatethe Stop & Start system (see "Driving").

Manual air conditioning
The air conditioning system operates with the engine running.
1. Temperature adjustment
)
Turn the dial to select a
position between blue (cold)and red (hot) so as to adjust
the temperature to your
requirements.

2. Air fl ow adjustment
This dial is used to increase or
decrease the speed of the air
booster fan.

3. Air distribution adjustment

This dial is used to arrange the distribution of
air in the passenger compartment by combiningseveral air outlets.
)If you place the air flow control in position 0, the system isdeactivated. However, a slight flow of air, due to the movement of thevehicle, can still be felt.
) Turn the dial from position 1
to position 5
toobtain a comfortable air flow.
Windscreen and side windows.
Windscreen, side windows and
f
ootwells.

Footwells.

Central and side vents.
Th
e air distribution can be
adapted by placing the dial in an
intermediate position.

81Comfort

4. Air intake/Air recirculation

The intake of exterior air prevents the formation of mist on the windscreen and side windows.
)
Press the button to recirculate
the interior air. The indicator lamp comes on to confirm this.
This function allows hot or cold air to be delivered selectively and more quickly.
5. Air conditioning On/Off

The air conditioning is designed tooperate effectively in all seasons,
with the windows closed.

Switching on
)
Press the "A/C"button, the button's
indicator lamp comes on.

The air conditioning does not operate when the air flow adjustment control 2is in position "0
".
To obtain cooled air more quickly, youcan use recirculation of interior air for a few moments. Then return to freshair intake. Th
e recirculation of interior air isolates the passenger compartment from exterior odours and smoke.
Return to exterior air intake as soon as possible
to prevent deterioration of the the air qualit
y and the formation of mist.
)Press the button again to permit the intake
of exterior air. The indicator lamp goes off
to confirm this.


It enables you to:
- lower the temperature, in summer,
- increase the effectiveness of the demistingin winter, above 3 °C.



Switching off
)
Press the "A/C"button again, the button's
indicator lamp goes off.
Switching off may affect comfor t levels (humidity, condensation).

Dual-zone digital air conditioning The air conditioning system operates when the engine is running.
Automatic operation
1. Automatic comfort programme
We recommend the use of one of
the three AUTO modes available:
they provide optimised regulation of
the temperature in the passenger compartment according to the comfort value
that you have chosen.
These three modes automatically adjust the
air flow, according to the desired setting, while also maintaining the desired comfort value.
) Press the "AUTO"
button repeatedly:


- a first indicator lamp comes on; the
"li
ght" setting mode is selected,

- a second indicator lamp comes on; the"medium" setting mode is selected,

- a third indicator lamp comes on; the
"intense" mode setting is selected.

When the engine is cold, the air flow will reach its optimum level
progressively, taking account of the weather and the desired comfort levelso as to avoid too great a distributionof cold air. On entering the vehicle, if the interior temperature is much colder or warmer than the comfort value, there is noneed to change the value displayed in order to obtain the comfor t required.The system corrects the differencein temperature automatically and asquickly as possible.
This s
ystem is designed to operate effectivelyin all seasons, with the windows closed.

83Comfort

2. Driver's side adjustment 4. Automatic visibilityprogramme

For maximum cooling or heating of thepassenger compar tment, it is possibleto exceed the minimum value 14 or themaximum value 28.)
Turn control 2or 3
to the left until
"LO"is displayed or to the right until "HI"
is displayed. See "Front demistin
g - defrosting".

3. Passenger's side adjustment
The driver and front passenger can each adjust the temperature to their requirements.
The value indicated on the displaycorresponds to a level of comfor t and not to a
temperature in degrees Celsius or Fahrenheit.
)Turn control 2or 3to the left or to the right respectively to decrease or increase this
v
alue.
A setting around the value 21 provides optimumcomfort. However, depending on your requirements,
a setting between 18 and 24 is normal. You are advised to avoid a left/right setting
difference of more than 3.

Manual operation

If you wish, you can make a different choice from that offered by the system by changinga setting. The the "AUTO"indicator lamps gooff; the other functions will still be controlled
automatically.
) Pressing the "AUTO"
button returns the system to completely automatic operation.
With Stop & Start, when demisting hasbeen activated, the STOP mode is not available.

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 conditioning.
The indicator lamp on the "A/C"button comes on.
6. Air distribution adjustment
)Press one or more buttons to
direct the air flow towards:
- th
e windscreen and side windows (demisting or defrosting),
- the outer and centre air vents,
- th
e footwells.

You can combine the three orientations toobtain the desired air distribution.


7. Air fl ow adjustment
)Turn this control to the left todecrease the air flow or to theright to increase the air flow.

8. Air intake/Air recirculation
)Press this button for recirculation of the interior air. The indicator lamp in the button comes on. The air
flow indicator lamps, between the
two fans, come on progressively in relation to
the value requested.

9. "REST" function: ventilationwith the engine off

Even with the engine is off, you canoperate the ventilation for afew minutes.
Air recirculation enables the passen
ger compartment to be isolated from exterior odours and smoke. )
As soon as possible, press this button
again to permit the intake of outside air andprevent the formation of condensation. The
indicator lamp in the button goes off.
For example, while
you are away from the
vehicle, the passengers can still enjoy some air circulation without having the engine running.
This function is available after switching on the
ignition, as well as after stopping the engine.
The period that the function is available
depends on the state of char
ge of the battery.
You can activate the "REST" function while the
air conditioning control screens are on.

85
Comfort

Switching the system off
)
Turn the air flow control tothe left until all of the indicator
lamps go off.

This switch does not operate the air conditioning, only the air fan. When the "REST" function is activated, you cannot modify the temperature, air flowand distribution settings: these are controlled automatically according to the ambienttemperature.This function is not available in the STOP mode of Stop & Star t.

Avoid prolonged operation in interior air recirculation mode or driving for long periods with the system off (risk of condensation and deterioration of air quality). On switchin
g on the engine

- The control screens come on: the function
is available.

- Pressing the RESTbutton activates the
ventilation for a few minutes. Activation of
the function is confirmed by the display of
two dashes in the control screens and four air flow level indicator lamps.

- The function can be deactivated and reactivated if the control screens are on.

- The screens go off at the end of this period. On stoppin
g the engine- While the control screens remain on: the
function is available.
- Pressing the REST
button activates theventilation for a few minutes. Activation of
the function is confirmed by the display of
two dashes in the control screens and four
air flow level indicator lamps.
Locking the vehicle has no effect on this
function.
- The control screens go off at the end of
this period.
Pressin
g again before the end of the period
interrupts off the ventilation definitively: the control screens go off and the function is
no longer available. This action switches off the air conditionin
g and
the ventilation.
Temperature related comfor t is no longer
assured but a slight flow of air, due to the
movement of the vehicle, can still be felt. ) Modify the settings (temperature, air flow or
air distribution) or press the "AUTO"
button
to reactivate the system with the values set before it was switched off.

Front demist - defrost
These markings on the control panel indicate the control positions for rapid demisting or
de
frosting of the windscreen and side windows.
With manual air
conditioning
)Put the temperature, air flow anddistribution controls to the dedicated marked position. )Put the air intake control to the "Exterior air intake" position (indicator lamp on the control off). )Switch on the air conditioning by pressing
the "A/C"button; the warning lamp in thebutton comes on.


With digital dual-zone air
conditioning


With Stop & Star t, when the demisting, air conditioning and air flow functionsare activated, STOP mode is not available.

Automatic visibility programme
)
Select this programme to demist or defrost
the windscreen and side windows as quickly as possible.
The system automatically manages the air conditioning, air flow and air intake, and
provides optimum distribution towards the
win
dscreen and side windows.) To stop the programme, press either the "visibility"button again or "AU TO " , the
warning lamp on the button goes off and
the warning lamp on the "AUTO"
button comes on.
The system starts again with the values in
use before it was overridden by the visibilityprogramme.
With Stop & Star t, when demisting hasbeen activated, the STOP mode is notavailable.