2010 CITROEN DS4 Owners Manual

103
Recommendations for ventilation and air conditioning
If after an extended stop in sunshine,
the interior temperature is very
high, 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.
In order for these systems to be fully effective, follow the operation and maintenance
guidelines below:
F

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o 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 well
as the air extractor located in the boot.
F

D

o not cover the sunshine sensor, located on the dashboard; this is used for regulation
of the air conditioning system.
F

O

perate the air conditioning system for at least 5 to 10 minutes, once or twice a month
to keep it in per fect working order.
F

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nsure that the passenger compartment filter is in good condition and have the filter
elements replaced regularly.
W

e 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 the
occupants and the cleanliness of the passenger compartment (reduction of allergic
symptoms, bad odours and greasy deposits).
F

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o ensure correct operation of the air conditioning system, you are also advised to have
it checked regularly as recommended in the maintenance and warranty guide.
F

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f 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 the
air conditioning increases the available engine power and so improves the towing ability. The condensation created by the air
conditioning results in a discharge
of water under the vehicle which is
per fectly normal.
Stop & Start
The heating and air conditioning systems only work when the engine is running.
To maintain a comfortable temperature in the passenger compartment, you can temporarily
deactivate the Stop & Start system.
For more information on Stop & Star t
, refer to the corresponding section.
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104
Manual air conditioning
The air conditioning system operates only with the engine running.
1. Temperature adjustment
F Turn the dial to select a position between blue (cold)
and red (hot) so as to adjust
the temperature to your
requirements.
2. Air flow 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 combining
several air outlets.
F

I

f you place the air flow control
in position 0 , the system is
deactivated. However, a slight flow
of air, due to the movement of the
vehicle, can still be felt.
F

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urn the dial from position 1 to position 5 to
obtain a comfortable air flow. Windscreen and side windows.
Windscreen, side windows and
footwells.
Footwells.
Central and side vents.
The air distribution can be
adapted by placing the dial in an
intermediate position.
Avoid driving too long with the
ventilation off (risk of misting and
deterioration of air quality).
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105
4. Air intake / Air recirculation
The intake of exterior air prevents the formation
of mist on the windscreen and side windows.F

P
ress 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 to operate
effectively in all seasons, with the windows
closed.
It enables you to:
-

l
ower the temperature, in summer,
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i
ncrease the effectiveness of the demisting
in winter, above 3 °C.
Switching on
The air conditioning does not operate
when the air flow adjustment control 2
is in position " 0".
To obtain cooled air more quickly, you
can use recirculation of interior air for
a few moments. Then return to fresh
air intake.
The 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 quality
and the formation of mist.
F

P

ress the button again to
permit the intake of exterior air.
The indicator lamp goes off to
confirm this.
Switching off
F Press the "A /C " button, the
button's indicator lamp comes on.
F Press the "A /C " button again,
the button's indicator lamp
goes off.
Switching off may affect comfort levels
(humidity, condensation).
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106
Dual-zone digital air conditioningThe air conditioning system operates when the engine is running.
Automatic operation
1. Automatic comfort programme
F Press the "AUTO" button
repeatedly:
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a f
irst indicator lamp comes
on; the "light" setting mode is
selected,
-

a s
econd indicator lamp
comes on; the "medium"
setting mode is selected,
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a t
hird 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 level
so as to avoid too great a distribution
of cold air.
On entering the vehicle, if the interior
temperature is much colder or warmer
than the comfort value, there is no
need to change the value displayed in
order to obtain the comfort required.
The system corrects the difference
in temperature automatically and as
quickly as possible.
This system is designed to operate effectively
in all seasons, with the windows closed. 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.
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107
2. Driver's side adjustment4. Automatic visibility programme
For maximum cooling or heating of the
passenger compartment, it is possible
to exceed the minimum value 14 or the
maximum value 28.
F

T
urn control 2 or 3 to the left until
"LO" is displayed or to the right
until "HI" is displayed.
For more information on the
automatic visibility programme,
refer to the "Front demisting -
defrosting"
section.
3. Passenger's side adjustment
F 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, 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 changing
a setting. The the "AUTO" indicator lamps go
off; the other functions will still be controlled
automatically.
With Stop & Start, when demisting has
been activated, the STOP mode is not
available.
The driver and front passenger can each adjust
the temperature to their requirements.
The value indicated on the display corresponds
to a level of comfort and not to a temperature in
degrees Celsius or Fahrenheit.
F

P
ressing the "AUTO"
button returns the system
to completely automatic
operation.
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108
5. Air conditioning On / Off
F Press this button to switch off the air conditioning.
Switching the system off could result in
discomfort (humidity, condensation).
6. Air distribution adjustment
F Press one or more buttons to direct the air flow towards:
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t
he windscreen and side
windows (demisting or
def r o st ing),
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t
he outer and centre air
vents,
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t
he footwells.
You can combine the three orientations to
obtain the desired air distribution.
7. Air flow adjustment
F Turn this control to the left to decrease the air flow or to the
right to increase the air flow.
8. Air intake / Air recirculation
F 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: ventilation with the engine off
Even with the engine is off, you can
operate the ventilation for a few
minutes.
Air recirculation enables the passenger compartment
to be isolated from exterior odours and smoke.
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 charge of the battery.
You can activate the "REST" function while the
air conditioning control screens are on.
Avoid prolonged operation in interior air
recirculation mode (risk of misting and
deterioration of air quality).
F

P

ress this button again to
return to automatic operation
of the air conditioning. The
indicator lamp on the "A /C "
button comes on.
F

A

s soon as possible, press
this button again to permit
the intake of outside air and
prevent the formation of
condensation. The indicator
lamp in the button goes off.
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Switching the system off
F Turn the air flow control to the 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 flow
and distribution settings: these are controlled automatically according to the ambient
temperature.
This function is not available in the STOP mode of Stop & Start. Avoid prolonged operation in interior
air recirculation mode or driving for
long periods with the system off (risk of
misting and deterioration of air quality).
On switching on the engine
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T
he control screens come on: the function
is available.
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P

ressing the REST button 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.
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T

he function can be deactivated and
reactivated if the control screens are on.
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he screens go off at the end of this
period. On stopping the engine
-
W
hile the control screens remain on: the
function is available.
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P

ressing the REST button 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.
L

ocking the vehicle has no effect on this
function.
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he control screens go off at the end of this
period.
P

ressing 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 conditioning and
the ventilation.
Temperature related comfort is no longer
assured but a slight flow of air, due to the
movement of the vehicle, can still be felt.
F

M
odify 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.
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11 0
Front demist - defrost
These markings on the control panel indicate the control positions for rapid demisting or
defrosting of the windscreen and side windows.
With manual air conditioning
F Put the temperature, air flow and distribution controls to the dedicated
marked position.
F

P
ut the air intake control to the "Exterior air
intake" position
(

indicator lamp on the control off).
F

S
witch on the air conditioning by pressing
the "A /C " button; the warning lamp in the
button comes on.
With digital dual-zone air
conditioning
With Stop & Start, when the demisting,
air conditioning and air flow functions
are activated, STOP mode is not
available.
Automatic visibility programme
F 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
windscreen and side windows.
F

T
o stop the programme, press either the
"visibility" button again or "AUTO" , 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 visibility
programme. With Stop & Start, when demisting has
been activated, the STOP mode is not
available.
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Ease of use and comfort