Page 337 of 534

07 SIENNA_U (L/O 0612)
329
2007 SIENNA from Oct. ’06 Prod. (OM45437U)
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
Page 338 of 534
07 SIENNA_U (L/O 0612)
330
2007 SIENNA from Oct. ’06 Prod. (OM45437U)
1. Fan speed selector (rear)
2. Air flow selectors
3. Temperature selector
4. Fan speed selector (front)
Rear manual air conditioning system—
—Controls
Page 339 of 534

07 SIENNA_U (L/O 0612)
331
2007 SIENNA from Oct. ’06 Prod. (OM45437U)
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. Bi level— Air flows from both the roof
panel vents and floor vent.
3. Floor— Air flows from the floor vent.
—Air flow selector settings
Page 340 of 534
07 SIENNA_U (L/O 0612)
332
2007 SIENNA from Oct. ’06 Prod. (OM45437U)
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
Page 341 of 534

07 SIENNA_U (L/O 0612)
333
2007 SIENNA from Oct. ’06 Prod. (OM45437U)
“AUTO” button
For automatic operation of the rear air
conditioning, press the “AUTO” button. An
indicator light will illuminate to show that
the automatic operation mode has been
selected.
In the automatic operation mode, the air
conditioning selects the most suitable fan
speed and air flow according to the tem-
perature.
You may use manual controls if you want
to select your own settings.
Fan speed selectors
Push the button to select the fan speed
mode.
In the automatic operation mode, the fan
speed is adjusted automatically unless you
desire another fan speed mode.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.
When “SYNC” appears on the rear tem-
perature display, rear controls cannot be
used. Use the controls on the front control
panel. To cancel this function, push the
“SYNC” button. For details about the
“SYNC” button, see “Front automatic air
conditioning system” on page 324 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 338 in Section 1 −10.)
“REAR” button
To turn on the rear air conditioning system
using the front control panel, push the
button. To turn it off, push the button
again.
“OFF” button
Push the button to turn off the rear air
conditioning system.
Air flow selectors
Push the button to select the vents used
for air flow. 1. Panel— Air flows from the roof panel
vents.
2. Bi level— Air flows from both the roof
panel vents and floor vent.
3. Floor— Air flows from the floor vent.
Page 342 of 534
07 SIENNA_U (L/O 0612)
334
2007 SIENNA from Oct. ’06 Prod. (OM45437U)
The air conditioning filter information
label is placed on the right side of the
glove box as shown and indicates that
a filter has been installed.
The air conditioning filter prevents dust
from entering the vehicle through the air
conditioning vent.The air conditioning filter is behind the
glove box.
—Air flow selector settings Air conditioning filter—
Page 343 of 534
07 SIENNA_U (L/O 0612)
335
2007 SIENNA from Oct. ’06 Prod. (OM45437U)
The air conditioning filter may clog af-
ter long use. The filter may need to be
replaced if the air flow of the air condi-
tioning and heater experiences extreme
reductions in operating efficiency, or if
the windows begin to fog up easily.
To maintain the air conditioning efficiency,
inspect and replace the air conditioning
filter according to the maintenance sched-
ule. In dusty areas or areas with heavy
traffic flow, such as inner city or desert
areas, early replacement may be required.
(For scheduled maintenance information,
please refer to the “Scheduled Mainte-
nance Guide” or “Owner ’s Manual Supple-
ment”.)
1. Open the glove box, and slide offthe damper as shown.2. Push in each side of the glove boxto disconnect the claws.
—Checking and replacing the
air conditioning filter
Page 344 of 534
07 SIENNA_U (L/O 0612)
336
2007 SIENNA from Oct. ’06 Prod. (OM45437U)
3. Remove the filter case from the filteroutlet as shown in the illustration.4. Remove the filter from the filtercase.
5. Inspect the filter on the surface.
If it is dirty, it should be replaced.
INFORMATION
The air filter should be installed prop-
erly in position. The use of air condi-
tioning with the air filter removed
may cause deteriorated dustproof per-
formance and then affect air condi-
tioning performance.