2009 VOLVO XC90 Owner´s Manual

03
CLIMATE

03 ClimateClimate control system – general information
0390
Condensation on the inside of the
windowsKeeping the insides of the windows clean will
help reduce the amount of condensation that
forms on the windows. Use a commercial win-
dow cleaning agent to clean the windows.Ice and snowAlways keep the air intake grille at the base of
the windshield free of snow.Cabin air filterReplace the cabin air filter with a new one at
the recommended intervals. Please refer to
your Warranty and Service Records Informa-
tion booklet, or consult a trained and qualified
Volvo service technician for these intervals.
The filter should be replaced more often when
driving under dirty and dusty conditions. The
filter cannot be cleaned and therefore should
always be replaced with a new one.
SensorsThe sunlight sensor on the dashboard and pas-
senger compartment temperature sensor in
the ECC control panel should not be covered
in any way as this could cause incorrect infor-
mation to be sent to the ECC system.Parking the vehicle in warm weatherIf your vehicle has been parked in the sun in
warm weather, opening the windows and
moonroof (option) for several minutes before
driving will help release the warm air from the
passenger compartment. When the engine is
running, close the windows and moonroof and
use the recirculation function for several
minutes to enable the air conditioning to cool
the compartment as quickly as possible.Windows and optional moonroofThe ECC system will function best if the win-
dows and optional moonroof are closed. If you
drive with the moonroof open, we recommend
that you manually adjust the temperature and
blower control (the LED in the AUTO switch
should be off).
AccelerationThe air conditioning is momentarily disen-
gaged during full-throttle acceleration.Climate control maintenanceSpecial tools and equipment are required to
maintain and carry out repairs on the climate
system. Work of this type should only be done
by a trained and qualified Volvo service tech-
nician.RefrigerantVolvo cares about the environment. The air
conditioning system in your vehicle contains a
CFC-free refrigerant – R134a (HFC134a). This
substance will not deplete the ozone layer. The
approximate amount of R134a contained in the
system is a follows:
6-cylinder engine
Single A/C system: 1.4 lbs (700 g)
Dual
1 A/C system: 2.2 lbs (1000 g)
8-cylinder engine
Single A/C system: 1.5 lbs (700 g)
Dual1 A/C system: 2.3 lbs (1050 g)
The system also uses PAG oil.
1Includes the optional rear A/C system

03 Climate
Climate control system – general information
0391 Climate system blower
The climate system blower will be automati-
cally switched off when the engine is not run-
ning (even if the ignition key is in position I or
II) to avoid unnecessary battery drain. To acti-
vate the blower, turn the control to the desired
setting.
The climate system blower may start automat-
ically during a period of up to approximately
50 minutes after the ignition has been turned
off to remove condensation in the A/C evapo-
rator. It will run for 15 minutes and switch off
automatically.Passenger compartment blowerApproximately 50 minutes after the ignition is
turned off, the blower may come on automati-
cally, and run for seven minutes, to remove
condensation in the A/C evaporator.Blower function to reduce battery drainThe climate system's blower functions nor-
mally while the engine is running.
However, when the engine is switched off
(even if the ignition is switched to positions I or
II), the blower control will be automatically
switched off to avoid unnecessary battery
drain.The following points pertain if the ignition is on
but the engine in not running:
•
To restart the blower, turn the control knob
to the setting of your choice.
•
After approximately 2 minutes, the blower
speed will be reduced to avoid battery
drain.
You can reset the blower speed at any time.
Please be aware that the system has been
designed to reduce the blower's speed again
after 2 minutes, until the engine is started.
If the battery becomes drained:
•
LOW BATTERY, FAN IS REDUCED will
be displayed in the text window in the
instrument panel.
•
The yellow warning light in the instrument
panel (see page 54) will also light up.

03 ClimateAir distribution
0392
G027044
Air distributionThe incoming air is distributed through the ven-
tilation points in the passenger compartment
shown above.
G027043
Air vents in the dash
OpenClosedHorizontal air flowVertical air flow
Direct the outer air vents toward the side win-
dows to defrost.
0
G027064
Air vents in the door pillars
OpenClosedHorizontal air flowVertical air flow
Direct the outer air vents toward the side win-
dows to defrost.

03 Climate
Electronic climate control (ECC)
03``93 Overview
G027046
AC – (ON/OFF)Recirculation/Multifilter with sensor
(option)RecirculationAUTOAirdistributionPassenger compartment temperature sen-
sorDefroster windshield and side windowsRear window and door mirrors defrosterHeated front seats(option)
Temperature passenger´s sideTemperature driver´s sideBlowerBlower control for rear climate sys-
tem(option)
Functions A/C – ON/OFF•
The air conditioning functions only at tem-
peratures above 32 °F (0 °C).
•
While the Defroster function is selected,
the air conditioning is temporarily activated
to dehumidify the air, even if you have man-
ually switched the air conditioning off. Thiswill only function if the blower is not
switched off.
Press the switch to turn the air conditioning on
or off. The "ON" or "OFF" LED will light up to
indicate if the system is switched on or off.
Other functions will still be regulated automat-
ically (if the AUTO switch is on).
Interior air quality sensor (option)Some vehicles are equipped with a multifilter
and air quality sensor. The filter separates
gases and particles, thereby reducing the
amounts of odors and contaminants entering
the vehicle. The air quality sensor detects
increased levels of contaminants in the outside
air. When the air quality sensor detects conta-

03 ClimateElectronic climate control (ECC)
0394
minated outside air, the air intake closes and
the air inside the passenger compartment is
recirculated, i.e. no outside air enters the vehi-
cle. The filter also cleans recirculated passen-
ger compartment air.
When the ECC system is in the AUTO mode,
the green LED will be on. RecirculationPress this switch to engage the recirculation
function (air in the passenger compartment
recirculates – no fresh air enters the compart-
ment). The LED in the switch will light up to
indicate that the function is engaged.•
Use this function if the outside air is con-
taminated with exhaust gases, smoke, etc
or to heat/cool the vehicle quickly.
•
Recirculation should not be used for more
than 15 minutes. If your windows begin to
fog or mist, make sure that the recirculation
function is switched off.
•
SelectingDefroster automatically
switches recirculation off.
•
Timer mode activation: (Vehicles equipped
with the Interior Air Quality system have no
timer mode) Press and hold the recircula-
tion button for at least 3 seconds to acti-
vate a recirculation timer mode. The amber
LED in the recirculation button will flash 5
times to show that the timer mode is being
activated. In timer mode, each time therecirculation button is pressed, the climate
control system will recirculate the air in the
passenger compartment for
5 – 12 minutes, depending on the outside
air temperature, and then revert back to
fresh air.
•
Timer mode deactivation: Press and hold
the recirculation button for 3 seconds. The
amber LED in the recirculation button will
illuminate steadily for 5 seconds to show a
return to "normal" mode.
•
In normal mode, when the recirculation
button is pressed, the climate control sys-
tem will recirculate the air in the passenger
compartment until the recirculation button
is pressed again.
•
Timer mode memory: If the vehicle is
turned off while timer mode is active, timer
mode will still be active when the vehicle is
restarted. AUTOThis function automatically regulates the
Electronic Climate Control system so that
the selected temperatures are maintained.
The blower, heating, air distribution (air
flow), air conditioning, and optional air qual-
ity sensor are controlled. If you prefer to man-
ually set any of these functions, the remaining
functions will still be controlled automatically.
Pressing the AUTO button overrides any set-
tings that were previously made manually.
Air distributionAir flow to windows
Air through panel vents
Air through floor vents
G027267
PressAUTO to automatically regulate air flow
or press any combination of the controls
shown in the illustration to manually adjust air
flow. An LED in the switch will light up if an air
flow control has been pressed. Passenger compartment temperature
sensorMeasures the temperature in the compart-
ment. DefrosterThis function defrosts/deices the windshield
and front side windows. The LED in the switch

03 Climate
Electronic climate control (ECC)
03``95
will light up to indicate that the defrost function
is engaged.•
Blower speed increases automatically and
the air conditioning will switch on (if not
already on and if the passenger compart-
ment blower is not turned off) to dehumid-
ify the air in the passenger compartment.
•
Recirculation will not function while defrost
is engaged.
The climate system will return to its previous
settings when the defroster function is
switched off. Rear window and door mirror
defrostersThis function defrosts/deices the rear window
and door mirrors. The LED in the switch will
light up to indicate that the heating function is
engaged. For additional information on this
function see page 70.
Never use ice scrapers made of metal as they
can easily scratch the mirror surface. Heated front seats (option)1. Press the switch once for maximum seat
heating. Both LEDs in the switch will be lit.
2. Press the switch a second time for comfort
heating. One LED in the switch will be lit.3. Press the switch a third time to turn the
heating off completely. The LED will go off.
The seat heating for the passenger seat should
be switched off when the seat is not occupied.
Temperature
These controls are used to individually set the
temperature for both sides of the passenger
compartment. Please note that the compart-
ment will not be heated or cooled faster by
setting the temperature higher or lower than
necessary.
Set the control to the temperature you prefer. Blower control
1
Turn the control clockwise to increase or coun-
terclockwise to decrease the blower speed.
Pressing the AUTO switch will automatically
regulate blower speed and override manual
adjustment.
Turning the blower control counterclockwise
until an orange LED comes on will turn both the
blower and the air conditioning off. Blower control for rear climate system
(option)Turn the control to increase or decrease blower
speed.
OperationPress to operate the air quality sensor (normal
setting).
or:
Select one of the following three functions by
pressing 1, 2 or 3 times.
1.
TheAUT LED lights. The air quality sensor
is now activated.
2. No LED lights. Recirculation is not acti-
vated unless needed to cool the passenger
compartment in a warm climate.
3.
TheMAN LED lights. Recirculation is now
activated.Keep in mind the following:•
Make it a rule to have the air quality sensor
activated at all times.
•
Recirculation is limited in cold climates to
avoid fogging.
•
If window fogging occurs, you should
deactivate the air quality sensor. Also use
the defroster functions for the windshield,
side windows and rear window, see
page 93.
•
The filter should be changed at the inter-
vals recommended in the service sched-
ule. However, if the vehicle is used in a
severely contaminated environment, it may
1See also see page 90.

03 ClimateElectronic climate control (ECC)
0396
be necessary to change the filter more fre-
quently.