TOYOTA SIENNA 2008 XL20 / 2.G Owners Manual

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Ventilation
For best results, set controls to:Fan speed— Any setting except “OFF”
Temperature— To w a r d s COLD
(blue zone)
Air intake—FRESH (outside air)
Air flow—PANEL
Air conditioning—OFF
Defogging
—The inside of the windshield
For best results, set controls to:
Fan speed— Any setting except “OFF”
Temperature— To w a r d s WARM
(red zone) to heat;
COLD (blue zone) to
cool
Air flow—WINDSHIELD
Turning the air flow selector to the wind-
shield or floor/windshield position turns on
the defogging function with the purpose of
clearing the front view.
When turning the air flow selector to the
windshield or floor/windshield position, the
air intake selects FRESH automatically.
This is to clean up the front view more
quickly. It is not possible to return to
RECIRCULATE in windshield position.
On humid days, do not blow cold air
on the windshield—the difference be-
tween the outside and inside tempera-
tures could make the fogging worse.
Defrosting
—The outside of the windshield
For best results, set controls to:
Fan speed— Any setting except “OFF”
Temperature— To w a r d s WARM
(red zone)
Air flow—WINDSHIELD
Turning the air flow selector to the wind-
shield or floor/windshield position turns on
the defrosting function with the purpose of
clearing the front view.
When turning the air flow selector to the
windshield or floor/windshield position, the
air intake selects FRESH automatically.
This is to clean up the front view more
quickly. It is not possible to return to
RECIRCULATE in windshield position.
To heat the vehicle interior while de-
frosting the windshield, choose
floor/windshield air flow.

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1. Temperature selector (“TEMP”)(with “SYNC” button indicator
on—simultaneous setting on driver,
front passenger and rear passenger
sides)
(with “SYNC” button indicator
off—individual setting on driver side
only)
2. Temperature selector (“PASS TEMP”) (individual setting on front passenger
side only)
3. “A/C” button
4. “SYNC” button (with button indicator on—simultaneous
temperature setting )
(with button indicator off—individual
temperature setting)
5. “MODE” button (air flow selector)
6. Windshield air flow button
7. Temperature selector (“REAR TEMP”) (individual setting on rear passenger
side only)
8. Fan speed selector
9. Air intake selector
10. “OFF” button
11. “AUTO” button
Front automatic air conditioning system—
—Controls

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“AUTO” button
For automatic operation of the air condi-
tioning, press the “AUTO” button. An indi-
cator light will illuminate to show that the
automatic operation mode has been se-
lected.
In the automatic operation mode, the air
conditioning selects the most suitable fan
speed, air flow, air intake and on−off of
the air conditioning according to the tem-
perature.
When you adjust the temperature selector
button to maximum cooling, “LO” will ap-
pear on the display and the air intake
mode will be automatically changed to RE-
CIRCULATE.
You may use manual controls if you want
to select your own settings.
Fan speed selector
Push the “
” (increase) or “” (de-
crease) side of the button to adjust the
fan speed.
In the automatic operation mode, the fan
speed is adjusted automatically unless you
desire another fan speed mode. “SYNC” button
Push the button to change the mode of
the temperature setting.
With the indicator on—
Simultaneous tem-
perature setting
With the indicator off— Individual temper-
ature setting
With the indicator on, the rear air condi-
tioning is turned on. However, controls on
the rear control panel cannot be used. To
cancel this function, push the “SYNC” but-
ton.
For details about the rear air conditioning,
see “Rear automatic air conditioning sys-
tem” on page 362 in this Section.
Temperature selectors
To increase the temperature, press the

” side. To decrease it, press the “”
side.
“LO” appears when you adjust to maxi-
mum cooling, and “HI” appears when you
adjust to maximum warming.
—“TEMP” button
With the “SYNC” button indicator on—
This button changes the temperature on
the driver side, front passenger side and
rear passenger side simultaneously. This function will be cancelled when the
“PASS TEMP” or “REAR TEMP” button is
pushed.
With the “SYNC” button indicator
off—
This button changes the temperature
on the driver side only.
—“PASS TEMP” button
This button changes the temperature on
the front passenger side only.
—“REAR TEMP” button
This button changes the temperature on
the rear passenger side only when the
rear air conditioning is turned on.
For details about the rear air conditioning,
see “Rear automatic air conditioning sys-
tem” on page 362 in this Section.
The temperature display changes between
“  C” and “ F” when the unit of the outside
temperature display is changed. (For de-
tails, see “Multi −information display” on
page 370 in Section 1 −10.)
“OFF” button
Push the button to turn off the air condi-
tioning system.

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“MODE” button (air flow selector)
Push the “MODE” button to select the
vents used for air flow.
In the automatic operation mode, the air
flow mode is selected automatically among
Panel, Bi−level, Floor and Floor/Windshield
unless you desire another air flow mode.
1. Panel— Air flows from the instrument
panel vents.
2. Bilevel— Air flows from both the floor
vents and the instrument panel vents.
3. Floor— Air flows mainly from the floor
vents.
4. Floor/Windshield— Air flows mainly
from the floor vents and windshield
vents. Windshield air flow button
When this button is pressed, air flows
mainly from the windshield vents and
turns on the defogging function with the
purpose of clearing the front view.
Pressing this button once again returns
the air flow mode to the last one used.
This button allows the air intake to select
FRESH automatically. This is to clean up
the front view more quickly. It is not pos-
sible to return to RECIRCULATE in this
mode.
For details about air flow selector settings,
see “—Air flow selector settings” de-
scribed below.Air intake selector
Press the button to select the air source.
1. Recirculate— Recirculates the air inside
the vehicle.
2. Fresh— Draws outside air into the sys-
tem.
To prevent fogging up of the windshield,
the air intake mode may change automati-
cally to FRESH depending on the condi-
tion of the air conditioning system.
“A/C” button
To turn on the air conditioning, press the
“A/C” button. The “A/C” button indicator
will come on. To turn the air conditioning
off, press the button again.

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To cool off your Toyota after it has
been parked in the hot sun, drive with
the windows open for a few minutes.
This vents the hot air, allowing the air
conditioning to cool the interior more
quickly.
Make sure the air intake grilles in front
of the windshield are not blocked (by
leaves or snow, for example).
On humid days, do not blow cold air
on the windshield. The windshield could
fog up because of the difference in air
temperature on the inside and outside
of the windshield.
Keep the area under the front seats
clear to allow air to circulate through-
out the vehicle.
On cold days, set the fan speed selec-
tor to adjust the fan speed high for a
minute to help clear the intake ducts
of snow or moisture. This can reduce
the amount of fogging on the windows.
When driving on dusty roads, close all
windows. If dust thrown up by the ve-
hicle is still drawn into the vehicle after
closing the windows, it is recommended
that the air intake selector be set to
FRESH and the fan speed selector to
any setting.
—Air flow selector settings—Operating tips

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If following another vehicle on a dusty
road, or driving in windy and dusty
conditions, it is recommended that the
air intake selector be temporarily set to
RECIRCULATE, which will close off the
outside passage and prevent outside
air and dust from entering the vehicle
interior.A U T O M AT I C O P E R AT I O N
Press in the “AUTO” button.
Temperature— To the desired
temperature
MANUAL OPERATION
For best results, set controls to:
Heating
Fan speed— To the desired fan speed
Temperature— Towards high temperature
Air intake—FRESH (outside air)
Air flow—FLOOR
Air conditioning—OFF
For quick heating, select recirculated
air for a few minutes. To keep the
windows from fogging, select fresh af-
ter the vehicle interior has been
warmed.
Press the “A/C” button on for dehumidi-
fied heating.
Choose floor/windshield air flow to heat
the vehicle interior while defrosting or
defogging the windshield. Air conditioning
Fan speed— To the desired fan speed
Temperature— Towards low temperature
Air intake—FRESH (outside air)
Air flow—PANEL
Air conditioning—ON
For quick cooling, select recirculated
air for a few minutes.
Ventilation
Fan speed— To the desired fan speed
Temperature— To w a r d s low temperature
Air intake—FRESH (outside air)
Air flow—PANEL
Air conditioning—OFF

Page 367 of 572

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Defogging
—The inside of the windshield
For best results, set controls to:Fan speed— To the desired fan speed
Temperature— To w a r d s high temperature
to heat; low temperature
to cool
Air flow—WINDSHIELD
Pressing the windshield air flow button
turns on the defogging function with the
purpose of clearing the front view.
When pressing the windshield air flow but-
ton, the air intake selects FRESH auto-
matically. This is to clean up the front
view more quickly. It is not possible to
return to RECIRCULATE in this position.
On humid days, do not blow cold air
on the windshield—the difference be-
tween the outside and inside tempera-
tures could make the fogging worse. Defrosting
—The outside of the windshield
For best results, set controls to:
Fan speed— To the desired fan speed
Temperature— To w a r d s high temperature
Air flow—WINDSHIELD
Pressing the windshield air flow button
turns on the defrosting function with the
purpose of clearing the front view.
When pressing the windshield air flow but-
ton, the air intake selects FRESH auto-
matically. This is to clean up the front
view more quickly. It is not possible to
return to RECIRCULATE in this position.
To heat the vehicle interior while de-
frosting the windshield, choose
floor/windshield air flow.
If air flow control is not satisfactory, check
the side vents. The side vents may be
opened or closed as shown.
Side vents

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2008 SIENNA from Aug. ’08 Prod. (OM45455U)
1. Fan speed selector (rear)
2. Air flow selectors
3. Temperature selector
4. Fan speed selector (front)
Rear manual air conditioning system—
—Controls

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2008 SIENNA from Aug. ’08 Prod. (OM45455U)
Fan speed selector (front)
This selector knob is used to turn the rear
air conditioning system on/off and adjust
the fan speed.
In the “REAR” position, you can operate
the system by the rear controllers.
Turn the knob to adjust the fan speed—to
the right to increase, to the left to de-
crease.
Turning the knob to the “OFF” position
turns the system off and it cannot be
operated by the rear controllers.
Fan speed selector (rear)
When the front fan speed selector is in
the “REAR” position, you can operate the
rear fan speed selector.
Turn the knob to adjust the fan speed—to
the right to increase, to the left to de-
crease.
Temperature selector
Turn the knob to adjust the tempera-
ture—to the right to warm, to the left to
cool.
Air flow selectors
Push the button to select the vents used
for air flow.1. Panel— Air flows from the roof panel
vents.
2. Bilevel— Air flows from both the roof
panel vents and floor vent.
3. Floor— Air flows from the floor vent.
—Air flow selector settings

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2008 SIENNA from Aug. ’08 Prod. (OM45455U)
1. “AUTO” button
2. Air flow selectors
3. Temperature selector (rear)
4. Fan speed selectors
5. “OFF” button
6. “REAR” button
7. Temperature selector (front)
Rear automatic air conditioning system—
—Controls

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