2007 TOYOTA SIENNA air conditioning

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2007 SIENNA from Oct. ’06 Prod. (OM45437U)
Because of the added load of the trail-
er, your vehicle’s engine may overheat
on hot days (at temperatures over
30C [85 F]) when going up a long or
steep grade with a trailer. If the engine
coolant temperature gauge indicates
overheating, immediately turn off the air
conditioning (if in use), pull off the road
and stop in a safe spot. Refer to “If
your vehicle overheats” on page 436 in
Section 4.
Always place wheel blocks under both
the vehicle and trailer wheels when
parking. Apply the parking brake firmly.
Put the transmission in “P”. Avoid park-
ing on a slope with a trailer, but if it
cannot be avoided, do so only after
performing the following:
1. Apply the brakes and hold.
2. Have someone place wheel blocks un- der both the vehicle and trailer wheels.
3. When the wheel blocks are in place, release your brakes slowly until the
blocks absorb the load.
4. Apply the parking brake firmly.
5. Shift into “P” and turn off the engine. When restarting out after parking on a
slope:
1. With the transmission in “P”, start the engine. Be sure to keep the brake ped-
al depressed.
2. Shift into gear.
3. Release the parking brake and brake pedal and slowly pull or back away
from the wheel blo cks. Stop and apply
your brakes.
4. Have someone retrieve the blo cks.
CAUTION
Do not exceed 72 km/h (45 mph) or
the posted towing speed limit,
whichever is lower. Because insta-
bility (swaying) of a towing vehicle
trailer combination usually in-
creases as the speed increases, ex-
ceeding 72 km/h (45 mph) may
cause loss of control.
Slow down and downshift before
descending steep or long downhill
grades. Do not make sudden down-
shifts.
Avoid holding the brake pedal down
too long or too frequently. This
could cause the brakes to overheat
and result in reduced braking effi-
ciency.

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2007 SIENNA from Oct. ’06 Prod. (OM45437U)
If your engine coolant temperature
gauge indicates overheating, if you ex-
perience a loss of power, or if you hear
a loud knocking or pinging noise, the
engine has probably overheated. You
should follow this procedure...1. Pull safely off the road, stop the ve- hicle and turn on your emergency
flashers. Put the transmission in “P”
and apply the parking brake. Turn off
the air conditioning if it is being used.
2. If coolant or steam is boiling out of the radiator or reservoir, stop the engine.
Wait until the steam subsides before
opening the hood. If there is no coolant
boiling over or steam, leave the engine
running and make sure the electric
cooling fan is operating. If it is not,
turn the ignition off.
CAUTION
To help avoid personal injury, keep
the hood closed until there is no
steam. Escaping steam or coolant is
a sign of very high pressure.
3. Look for obvious coolant leaks from theradiator, hoses, and under the vehicle.
However, note that water draining from
the air conditioning is normal if it has
been used.
CAUTION
When the engine is running, keep
hands and clothing away from the
moving fan and engine drive belts.
4. If the coolant is leaking, stop the en-gine immediately. Call a Toyota dealer
for assistance.
5. If there are no obvious leaks, check the coolant reservoir. If it is dry, add
coolant to the reservoir while the en-
gine is running. Fill it about half full.
CAUTION
Do not attempt to remove the radiator
cap when the engine and radiator are
hot. Serious injury could result from
scalding hot fluid and steam blown
out under pressure.
6. After the engine coolant temperaturehas cooled to normal, again check the
coolant level in the reservoir. If neces-
sary, bring it up to half full again. Seri-
ous coolant loss indicates a leak in the
system. You s hould have it checked as
soon as possible at your Toyota dealer.
If your vehicle overheats

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2007 SIENNA from Oct. ’06 Prod. (OM45437U)
Carpets
Use a good foamtype shampoo to
clean the carpets.
Begin by vacuuming thoroughly to remove
as much dirt as possible. Several types of
foam cleaners are available; some are in
aerosol can sand others are powders or
liquids which you mix with water to pro-
duce a foam. To shampoo the carpets,
use a sponge or brush to apply the foam.
Rub in overlapping circles.
Do not apply water—the best results are
obtained by keeping the carpet as dry as
possible. Read the shampoo instructions
and follow them closely.
Seat belts
The seat belts may be cleaned with
mild soap and water or with lukewarm
water.
Use a cloth or sponge. As you are clean-
ing, check the belts for excessive wear,
fraying, or cuts.
NOTICE
Do not use dye or bleach on the
belts—it may weaken them.
 Do not use the belts until they be-
come dry.
Windows
The windows may be cleaned with any
household window cleaner.
NOTICE
When cleaning the inside of the
rear window, be careful not to
scratch or damage the heater wires
or connectors.
 With onglass antenna: When clean-
ing the inside of the rear window,
be careful not to scratch or damage
the printed antenna.
Air conditioning control panel, audio
panel, instrument panel, console panel,
and switches
Use a soft damp cloth for cleaning.
Soak a clean soft cloth in water or luke-
warm water then lightly wipe off dirt.
NOTICE
Do not use organic substances (sol-
vents, kerosene, alcohol, gasoline,
etc.) or alkaline or acidic solutions.
These chemicals can cause discol-
oring, staining or peeling of the
surface.
 If you use cleaners or polishing
agents, make sure their ingredients
do not include the substances men-
tioned above.
 If you use a liquid car freshener, do
not spill the liquid onto the ve-
hicle’s interior surfaces. It may con-
tain the ingredients mentioned
above. Immediately clean any spill
using the method mentioned above.

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Tire inflation pressure
Check the pressure with a gauge ev-
ery two weeks, or at least once a
month. See page 487 in Section 7−2
for additional information.
Tire surface and wheel nuts
Check the tires carefully for cuts,
damage or excessive wear. See page
490 in Section 7− 2 for additional in-
formation. When checking the tires,
make sure no nuts are missing, and
check the nuts for looseness. Tighten
them if necessary.
Tire rotation
Rotate the tires according to the
maintenance schedule. (For sched-
uled maintenance information, please
refer to the “Scheduled Maintenance
Guide” or “Owner ’s Manual Supple-
ment”.) See page 492 in Section 7 −2
for additional information.Be on the alert for changes in perfor-
mance, sounds, and visual tip −offs that
indicate service is needed. Some impor-
tant clues are as follows:
Engine missing, stumbling, or pinging
Appreciable loss of power
Strange engine noises
A leak under the vehicle (however, wa-
ter dripping from the air conditioning
after use is normal.)
Change in exhaust sound (This may
indicate a dangerous carbon monoxide
leak. Drive with the windows open and
have the exhaust system checked im-
mediately.)
Flat −looking tire; excessive tire squeal
when cornering; uneven tire wear
Vehicle pulls to one side when driving
straight on a level road
Strange noises related to suspension
movement
Loss of brake effectiveness; spongy
feeling brake pedal; pedal almost
touches floor; vehicle pulls to one side
when braking
Engine coolant temperature continually
higher than normal If you notice any of these clues, take your
vehicle to your Toyota dealer as soon as
possible. It probably needs adjustment or
repair.
CAUTION
Do not continue driving with the ve-
hicle unchecked. It could result in se-
rious vehicle damage and possibly
personal injury.
Does your vehicle need
repairing?

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If you perform maintenance by yourself,
be sure to follow the correct procedure
given in this Section.
You should be aware that improper or in-
complete servicing may result in operating
problems.
Performing do−it−yourself maintenance
during the warranty period may affect your
warranty coverage. Read the separate
Toyota Warranty statement for details and
suggestions.
This Section gives instructions only for
those items that are relatively easy for an
owner to perform. As explained in Section
6, there are still a number of items that
must be done by a qualified technician
with special tools.
For information on tools and Sections for
do− it−yourself maintenance, see “Parts
and tools” on page 479 in this Section.
Utmost care should be taken when work-
ing on your vehicle to prevent accidental
injury. Here are a few precautions that
you should be especially careful to ob-
serve:CAUTION
When the engine is running, keep
hands, clothing, and tools away
from the moving fan and engine
drive belts. (Removing rings,
watches, and ties is advisable.)
When the fan is operating after the
engine is turned off, do not touch
the engine compartment. Doing so
may result in injury or burn.
Right after driving, the engine
compartment—the engine, radiator,
exhaust manifold and spark plug
boots, etc.—will be hot. So be care-
ful not to touch them. Oil, fluids
and spark plugs may also be hot.
If the engine is hot, do not remove
the radiator cap or loosen the drain
plugs to prevent burning yourself.
Do not leave anything that may
burn easily, such as paper or rags,
in the engine compartment.
Do not smoke, cause sparks or al-
low open flames around fuel or the
battery. Their fumes are flammable.
Do not get under your vehicle with
just the body jack supporting it. Al-
ways use automotive jack stands or
other solid supports.
Be sure that the ignition is off if
you work near the electric cooling
fans or radiator grille. With the
ignition on, the electric cooling fans
will automatically start to run if the
engine coolant temperature is high
and/or the air conditioning is on.
Use eye protection whenever you
work on or under your vehicle
where you may be exposed to flying
or falling material, fluid spray, etc.
Used engine oil contains potentially
harmful contaminants which may
cause skin disorders such as in-
flammation or skin cancer, so care
should be taken to avoid prolonged
and repeated contact with it. To re-
move used engine oil from your
skin, wash thoroughly with soap
and water.
Do not leave used oil within the
reach of children.
Doityourself service
precautions

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2007 SIENNA from Oct. ’06 Prod. (OM45437U)
13. DOME 10 A: Personal lights, vanity
lights, door courtesy lights, luggage
compartment light, ignition switch light,
multi −information display
14. ECUB 10 A: Power sliding door, air
conditioning system, power windows,
multiplex communication system, meter
and gauge, wireless remote control
system
15. RAD NO. 1 20 A: Audio system, rear
seat entertainment system
16. SPARE 15 A: Spare fuse
17. SPARE 20 A: Spare fuse
18. SPARE 30 A: Spare fuse
19. SPARE 30 A: Spare fuse
20. SPARE 7.5 A: Spare fuse
21. HLP RH 10 A: Right−hand headlight
22. HLP LH 10 A: Left−hand headlight
23. RSE 7.5 A: Rear seat entertainment
system
24. INJ 10 A: Multiport fuel injection sys-
tem/sequential multiport fuel injection
system
25. MIR HTR 10 A: Outside rear view mir-
ror heaters 26. RAD2 7.5 A:
Audio system, navigation
system, rear seat entertainment system
27. PWR OUTLET 15 A: Power outlets
28. CIG 15 A: Cigarette lighter
29. ECU ACC 7.5 A: Shift lock control
system, air c onditioning system, power
rear view mirror control
30. GAUGE2 7.5 A: Meter and gauge
31. IGN 7.5 A: Multiport fuel injection sys-
tem/sequential multiport fuel injection
system, SRS airbag system, multiplex
communication system
32. IG2 7.5 A: Multiport fuel injection sys-
tem/sequential multiport fuel injection
system
33. RR WIP 15 A: Rear window wiper
34. WIP 30 A: Windshield wiper and rear
window wiper
35. GAUGE1 10 A: Back−up lights, turn
signal lights, emergency flashers
36. SHTR 15 A: Seat heaters
37. WSH 20 A: Windshield washer and
rear window washer
38. HTR 10 A: Air conditioning system 39. ECUIG 10 A:
Toyota park assist sys-
tem, rear view monitor system, multi-
plex communication system, multiport
fuel injection system/sequential multi-
port fuel injection system, anti −lock
brake system, traction control system,
vehicle stability control system, shift
lock control system, dynamic laser
cruise control system, seat heaters,
power back door, electronic moon roof,
multi −information display, auto anti−
glare inside rear view mirror, power
windows, power outlets (115 V), power
third seat, driving position memory sys-
tem
40. PANEL 10 A: Air conditioning system,
seat heaters, audio system, navigation
syste

m, power sliding door, power back
door, multi −information display, rear
window defogger, emergency flashers,
instrument panel lights, steering switch
lights
41. TAIL 10 A: Stop/tail lights, license
plate lights, parking lights, side marker
lights
42. S/ROOF 25 A: Electronic moon roof
43. AC INV 15 A: Power outlets (115 V)
44. FR DEF 15 A: Windshield wiper de−
icer

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2007 SIENNA from Oct. ’06 Prod. (OM45437U)
45. AM1 7.5 A: Multiport fuel injection sys-
tem/sequential multiport fuel injection
system, starter system
46. STOP 10 A: Stop/tail lights, high
mounted stoplight, shift lock control
system, anti −lock brake system, trac-
tion control system, vehicle stability
control system, multiport fuel injection
system/s equential multiport fuel injec-
tion system, multiplex communication
system
47. P/W 25 A: Power windows, power rear
view mirror
48. OBD 7.5 A: On−board diagnosis sys-
tem
49. FOG 15 A: Front fog lights
50. P/VENT 15 A: Power quarter windows
51. ST 7.5 A: Multiport fuel injection sys-
tem/sequential multiport fuel injection
system
52. A/C 7.5 A: Manual air conditioning sys-
tem
53. SFT 5 A: Shift lock control system Fuses (type B)
54. MAIN 30 A: Headlights, daytime run-
ning light system, “H −LP RL” and “H −
LP LL” fuses
55. AM2 30 A: “INJ”, “IGN” and “GAUGE2”
fuses
56. LRR2 SEAT 30 A: Power third seat
57. RRR2 SEAT 30 A: Power third seat
58. P/SEAT 30 A: Power front seats
59. PWR 30 A: Power windows
Fuses (type C)
60. RR2 SEAT 50 A: Power third seat
61. HTR 50 A: Air conditioning system,
“A/C” fuse
62. FAN 50 A: Electric cooling fans
63. PBD 30 A: Power back door
64. RPSD 30 A: Right side power sliding
door
65. LPSD 30 A: Left side power sliding
door
66. RR A/C 40 A: Rear air conditioning
system 67. DEF 40 A:
Rear window defogger,
“MIR HTR” fuse
68. ABS1 50 A: Anti−lock brake system,
traction control system, vehicle stability
control system
69. ABS2 30 A: Anti−lock brake system,
traction control system, vehicle stability
control system
70. ST 30 A: Starting system
Fuse (type D)
71. ALT 140 A: Charging system, “RR
A/C”, “HTR”, “FAN”, “PBD”, “R− PSD”,
“L −PSD” and “DEF” fuses