2010 VOLVO XC90 sensor

01 Safety
Occupant Weight Sensor01
27
This condition reflects limitations of the OWS
classification capability. It does not indicate
OWS malfunction.
ModificationsIf you are considering modifying your vehicle in
any way to accommodate a disability, for
example by altering or adapting the driver's or
front passenger's seat(s) and/or airbag sys-
tems, please contact Volvo at:
In the USA
Volvo Cars of North America, LLC
Customer Care Center
1 Volvo Drive
P.O. Box 914 Rockleigh,
New Jersey 07647
1-800-458-1552
In Canada
Volvo Cars of Canada Corp.
National Customer Service
175 Gordon Baker Road
North York, Ontario M2H 2N7
1-800-663-8255
WARNING
•No objects that add to the total weight
on the seat should be placed on the
front passenger's seat. If a child is
seated in the front passenger's seat
with any additional weight, this extra
weight could cause the OWS system to
enable the airbag, which might cause it
to deploy in the event of a collision,
thereby injuring the child.
•The seat belt should never be wrapped
around an object on the front passeng-
er's seat. This could interfere with the
OWS system's function.
•The front passenger's seat belt should
never be used in a way that exerts more
pressure on the passenger than normal.
This could increase the pressure exer-
ted on the weight sensor by a child, and
could result in the airbag being enabled,
which might cause it to deploy in the
event of a collision, thereby injuring the
child.
WARNING
Keep the following points in mind with
respect to the OWS system. Failure to follow
these instructions could adversely affect the
system's function and result in serious injury
to the occupant of the front passenger's
seat:
•The full weight of the front seat passen-
ger should always be on the seat cush-
ion. The passenger should never lift
him/herself off the seat cushion using
the armrest in the door or the center
console, by pressing the feet on the
floor, by sitting on the edge of the seat
cushion, or by pressing against the
backrest in a way that reduces pressure
on the seat cushion. This could cause
OWS to disable the front passenger's
side airbag.
•Do not place any type of object on the
front passenger's seat in such a way
that jamming, pressing, or squeezing
occurs between the object and the front
seat, other than as a direct result of the
correct use of the Automatic Locking
Retractor/Emergency Locking Retrac-
tor (ALR/ELR) seat belt (see page 34).
•No objects should be placed under the
front passenger's seat. This could inter-
fere with the OWS system's function.

02 Instruments and controls
Lighting panel
02

* Option/accessory, for more information, see Introduction.63
Headlight/parking light switch
Front fog lights
Rear fog light
Instrument panel lighting
Fuel filler door unlock button
Parking lights
The front and rear parking lights can be turned
on even when the ignition is switched off.

Turn switch (1) to position
.
The license plate lights also illuminate when the
parking lights are switched on.
Headlights
1.
Turn the ignition key to position II.
2. The low beam headlights (daytime running
lights) illuminate automatically, except
when the light switch (1) is in position
1.
For information on switching between high and
low beams, see page 66.
NOTE
Active Bending Lights*: Turn the headlight
switch to position 0 to activate a daylight
sensor, which automatically switches the
low beams on or off, depending on ambient
light conditions. When driving in daylight,
the headlights will switch off and the day-
time running lights will come on. In dark-
ness, the daytime running lights will switch
off and the Active Bending Lights will switch
on.
G020789
Headlight pattern with the Active Bending Light
function deactivated (left) and activated (right)
1On Canadian models, the daytime running lights will remain on with the light switch in this position.

02 Instruments and controls
Right-side steering wheel lever
02

67 Windshield wipers
G026953
Thumb wheel
Rain sensor on/off
Windshield wipers offIf the lever is in the 0 position and
you move it upwards, the wipers
will sweep one stroke at a time for
as long as you hold the lever up.
Single sweep positionMove the lever slightly upward
from the 0 position for one sweep
of the wipers. The lever returns
automatically to 0 when released.
Intermittent wiper functionWith the lever in this position, you
can set the wiper interval by twist-
ing the control ring (1) upward to
increase wiper speed or down-
ward to decrease the speed.
Windshield washer/headlight washer
(certain models)
When the lever is pulled to wash the wind-
shield, high pressure jets mounted in the
bumper will spray the headlights.
CAUTION
•Use ample washer fluid when washing
the windshield to avoid scratching the
glass. The windshield should be thor-
oughly wet when the wipers are in oper-
ation.
•Before using the wipers, ice and snow
should be removed from the wind-
shield/rear window. Be sure the wiper
blades are not frozen in place.
•To conserve washer fluid in driving condi-
tions where the windshield washers are
used frequently, the headlights will only be
washed once for every five times the wind-
shield is washed within a 10-minute period.
•A short pull on the lever will wash the wind-
shield only.
•When approximately 1 US quart (1 liter)
remains in the washer fluid reservoir, the
headlights will not be washed when the
lever is pulled to conserve washer fluid for
the windshield.
Continuous wiper functionTop arrow: normal speed
Bottom arrows: higher speed

02 Instruments and controls
Right-side steering wheel lever
02
68* Option/accessory, for more information, see Introduction.
Tailgate wiper/washer
G027127
Intermittent wiping: Press the upper
section of the switch
Neutral position: The wiper is switched
off
Normal (continuous) wiping: Press the
lower section of the switch
Move the lever forward to start the tailgate
washer. After washing the rear window, the
wiper will make several additional sweeps.
Tailgate wiper and reverse gearIf the front wipers are on and the transmission
is put into reverse gear, the tailgate wiper will
go into intermittent wiping function
1.
If the tailgate wiper is already in normal wiping
function, the normal wiping function will con-
tinue.
Rain sensor*
The rain sensor automatically regulates wiper
speed according to the amount of water on the
windshield.
The sensitivity of the sensor can be adjusted
by twisting ring (1) up (the wipers will sweep the
windshield more frequently) or down (the wip-
ers will sweep the windshield less frequently).
Activating the rain sensor:1.
Turn the ignition key to at least position I
and put the windshield wiper lever in posi-
tion 0.
2. Press button (2), see page 67.
> A light in the button will light up to indi-
cate that the rain sensor is active.
Deactivating the rain sensor:
•Press button (2), see page 67.
or
•Move the windshield wiper lever down to
another position. Moving the lever up will
not deactivate the rain sensor. Doing so
will cause the wipers to sweep the wind-
shield until the lever is released, at which
time the wipers return to rain sensor mode.
The rain sensor is also deactivated when the
key is removed from the ignition.
CAUTION
The rain sensor should be deactivated when
washing the vehicle in an automatic car
wash, etc. If the rain sensor function is left
on, the wipers will start inadvertently in the
car wash and could be damaged.
1Consult your Volvo retailer if you would like to have this function deactivated.

03 Climate
Climate control system – general information
03
90* Option/accessory, for more information, see Introduction.
Condensation on the inside of the
windows
Keeping 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 snow
Always keep the air intake grille at the base of
the windshield free of snow.
Cabin air filter
Replace 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.
Sensors
The 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 weather
If your vehicle has been parked in the sun in
warm weather, opening the windows and
moonroof* for several minutes before driving
will help release the warm air from the passen-
ger 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 com-
partment as quickly as possible.
Windows and optional moonroof
The 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).
Acceleration
The air conditioning is momentarily disen-
gaged during full-throttle acceleration.
Climate control maintenance
Special 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.
Refrigerant
Volvo 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)
Dual
1 A/C system: 2.3 lbs (1050 g)
The system also uses PAG oil.
1Includes the optional rear A/C system

03 Climate
Electronic climate control (ECC)
03
94* Option/accessory, for more information, see Introduction.
Overview
AC – (ON/OFF)
Recirculation/Multifilter with sensor*
Recirculation
AUTO
Airdistribution
Passenger compartment temperature sen-
sor
Defroster windshield and side windows
Rear window and door mirrors defroster
Heated front seats*
Temperature passenger´s side
Temperature driver´s side
Blower
Blower control for rear climate system*
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*
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 Climate
Electronic climate control (ECC)
03

95
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.
Recirculation
Press 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.
•Selecting Defroster 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.
AUTO
This 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 distribution
G027267
•Air flow to windows
•Air through panel vents
•Air through floor vents
Press AUTO 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
sensor
Measures the temperature in the compart-
ment.
Defroster
This function defrosts/deices the windshield
and front side windows. The LED in the switch

03 Climate
Electronic climate control (ECC)
03
97
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.
The AUT 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.
The MAN 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 94.
•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
be necessary to change the filter more fre-
quently.