name. SIENNA (45403U)
221
If towing is necessary, we recommend
you to have it done by your Toyota
dealer or a commercial tow truck ser-
vice. In consultation with them, have
your vehicle towed using either (a) or
(b).
Only when you cannot receive a towing
service from a Toyota dealer or com-
mercial tow truck service, tow your ve-
hicle carefully in accordance with the
instructions given in ”—Emergency tow-
ing” in this part.
Proper equipment will help ensure that
your vehicle is not damaged while being
towed. Commercial operators are generally
aware of the state/provincial and local
laws pertaining to towing.
Your vehicle can be damaged if it is
towed incorrectly. Although most operators
know the correct procedure, it is possible
to make a mistake. To avoid damage to
your vehicle, make sure the following few
precautions are observed. If necessary,
show this page to the tow truck driver.
TOWING PRECAUTIONS:
Use a safety chain system for all towing,
and abide by the state/provincial and local
laws. The wheels and axle on the ground
must be in good condition. If they are
damaged, use a towing dolly.(a) Towing with wheel lift type truck
From front—Release the parking brake.
NOTICE
When lifting wheels, take care to en-
sure adequate ground clearance for
towing at the opposite end of the
raised vehicle. Otherwise, the bumper
and/or underbody of the towed vehicle
will be damaged during towing.
From rear—
Use a towing dolly under the front wheels.
NOTICE
Never tow a vehicle with an automatic
transmission from the rear with the
front wheels on the ground, as this
may cause serious damage to the
transmission.
(b) Using flat bed truck
(c) Towing with
sling type truck
(c) Towing with sling type truck
NOTICE
Do not tow with sling type truck, ei-
ther from the front or rear. This may
cause body damage.
ProCarManuals.com
name. SIENNA (45403U)
222
—Emergency towing
Front
Rear
If towing is necessary, we recommend
you to have it done by your Toyota
dealer or a commercial tow truck ser-
vice.
If towing service is not available in an
emergency, your vehicle may be tempo-
rarily towed by a cable or chain se-
cured to one of the emergency towing
eyelets under the vehicle. Use extreme
caution when towing vehicles.
A driver must be in the vehicle to steer
it and operate the brakes.
Towing in this manner may be done only
on hard−surfaced roads for a short dis-
tance and at low speeds. Also, the
wheels, axles, drive train, steering and
brakes must all be in good condition.
CAUTION
Use extreme caution when towing ve-
hicles. Avoid sudden starts or erratic
driving maneuvers which would place
excessive stress on the emergency
towing eyelets and towing cable or
chain. The eyelets and towing cable
or chain may break and cause serious
injury or damage.
NOTICE
Use only a cable or chain specifically
intended for use in towing vehicles.
Securely fasten the cable or chain to
the towing eyelets provided.
Before towing, release the parking brake
and put the transmission in ”N”. The key
must be in ”ACC” (engine off) or ”ON”
(engine running).
CAUTION
If the engine is not running, the pow-
er assist for the brakes and steering
will not work so steering and braking
will be much harder than usual.
ProCarManuals.com
name. SIENNA (45403U)
233
Tire surface and wheel nuts
Check the tires carefully for cuts, damage
or excessive wear. See Chapter 7−2 for
additional information. 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 every 12000 km (7500
miles). See Chapter 7−2 for additional in-
formation.
Fluid leaks
Check underneath for leaking fuel, oil, wa-
ter or other fluid after the vehicle has
been parked for a while. If you smell fuel
fumes or notice any leak, have the cause
found and corrected immediately.
Doors and engine hood
Check that all doors including trunk lid
operate smoothly and all latches lock se-
curely. Make sure the engine hood sec-
ondary latch secures the hood from open-
ing when the primary latch is released.
INSIDE THE VEHICLE
Items listed below should be checked
regularly, e.g. while performing periodic
services, cleaning the vehicle, etc.Lights
Make sure the headlights, stop lights, tail
lights, turn signal lights, and other lights
are all working. Check headlight aim.
Service reminder indicators and warning
buzzers
Check that all service reminder indicators
and warning buzzers function properly.
Steering wheel
Be alert for changes in steering condition,
such as hard steering or strange noise.
Seats
Check that all seat controls such as seat
adjusters, seatback recliner, etc. operate
smoothly and that all latches lock securely
in any position. Check that the head re-
straints move up and down smoothly and
that the locks hold securely in any latched
position. For folding−down rear seatbacks
and detachable rear seats, check that the
latches lock securely.
Seat belts
Check that the seat belt system such as
buckles, retractors and anchors operate
properly and smoothly. Make sure the belt
webbing is not cut, frayed, worn or dam-
aged.Accelerator pedal
Check the pedal for smooth operation and
uneven pedal effort or catching.
Brake pedal
Check the pedal for smooth operation and
that the pedal has the proper clearance.
Check the brake booster function.
Brakes
At a safe place, check that the brakes do
not pull to one side when applied.
Parking brake
Check that the pedal has the proper travel
and that, on a safe incline, your vehicle
is held securely with only the parking
brake applied.
Automatic transmission ”Park” mecha-
nism
On a safe incline, check that your vehicle
is held securely with the selector lever in
”P” position and all brakes released.
ProCarManuals.com
name. SIENNA (45403U)
241
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.
Dispose of used oil and filter only
in a safe and acceptable manner.
Do not dispose of used oil and fil-
ter in household trash, in sewers or
onto the ground. Call your dealer or
a service station for information
concerning recycling or disposal.
NOTICE
Remember that battery and ignition
cables carry high currents or volt-
ages. Be careful of accidentally
causing a short circuit.
Add only demineralized or distilled
water to fill the radiator. And if you
spill some of the coolant, be sure
to wash off with water to prevent it
from damaging the parts or paint.
Do not allow dirt or anything else
to fall through the spark plug holes.
Do not pry the outer electrode of a
spark plug against the center elec-
trode.
Use only spark plugs of the speci-
fied type. Using other types will
cause engine damage, loss of per-
formance or radio noise.
Do not reuse platinum−tipped spark
plugs by cleaning or regapping.
Do not overfill automatic transmis-
sion fluid, or the transmission
could be damaged.
Do not drive with the air cleaner
filter removed, or excessive engine
wear could result. Also backfiring
could cause a fire in the engine
compartment.
Be careful not to scratch the glass
surface with the wiper frame.
When closing the engine hood,
check to see that you have not for-
gotten any tools, rags, etc.
ProCarManuals.com
name. SIENNA (45403U)
242
Parts and tools
Here is a list of parts and tools you will
need on performing do−it−yourself mainte-
nance. Remember all Toyota parts are de-
signed in metric sizes, so your tools must
be metric.
Checking the engine oil level
Parts (if level is low):
Engine oil API grade SJ, ”Energy−
Conserving” or ILSAC multigrade hav-
ing viscosity proper for your climate
Tools:
Rag or paper towel
Funnel (only for adding oil)
Checking the engine coolant level
Parts (if level is low):
”Toyota Long Life Coolant” or equiva-
lent
See Chapter 7−2 for details about cool-
ant type selection.
Demineralized or distilled water
Tools:
Funnel (only for adding coolant)Checking brake fluid
Parts (if level is low):
SAE J1703 or FMVSS No. 116 DOT 3
brake fluid
Tools:
Rag or paper towel
Funnel (only for adding fluid)
Checking power steering fluid
Parts (if level is low):
Automatic transmission fluid
DEXRON®II or III
Tools:
Rag or paper towel
Funnel (only for adding fluid)
Checking battery condition
Tools:
Warm water
Baking soda
Grease
Conventional wrench (for terminal
clamp bolts)Checking and replacing fuses
Parts (if replacement is necessary):
Genuine Toyota fuse or equivalent with
same amperage rating as original
Adding washer fluid
Parts:
Water
Washer fluid containing antifreeze (for
winter use)
Tools:
Funnel
Replacing light bulbs
Parts:
Bulb with same number and wattage
rating as original (See charts in
”Replacing light bulbs” in Chapter 7−3.)
Tools:
Screwdriver
Wrench
ProCarManuals.com
name. SIENNA (45403U)
247
Clean all dirt from outside of the reservoir
tank and look at the fluid level. If the fluid
is cold, the level should be in the ”COLD”
range. Similarly, if it is hot, the fluid level
should be in the ”HOT” range. If the level
is at the low side of either range, add
automatic transmission fluid DEXRONII
or III to bring the level within the range.
To remove the filler cap, turn it counter-
clockwise and lift up. To reinstall it, turn
it clockwise. After replacing the filler
cap,visually check the steering box case,
vane pump and hose connections for
leaks or damage.
CAUTION
The reservoir tank may be hot so be
careful not to burn yourself.
NOTICE
Avoid overfilling, or the power steer-
ing could be damaged.
Checking tire pressure
Keep your tire pressures at the proper
level.
The recommended cold tire pressures, tire
size and the vehicle capacity weight are
given in Part 8. They are also on the tire
pressure label as shown.
You should check the tire pressures every
two weeks, or at least once a month. And
don’t forget the spare!
Incorrect tire pressure can reduce tire
life and make your vehicle less safe to
drive.Low tire pressure results in excessive
wear, poor handling, reduced fuel econo-
my, and the possibility of blowouts from
overheated tires. Also, low tire pressure
can cause poor sealing of the tire bead.
If the tire pressure is excessively low,
there is the possibility of wheel deforma-
tion and/or tire separation.
High tire pressure produces a harsh ride,
handling problems,excessive wear at the
center of the tire tread, and a greater
possibility of tire damage from road haz-
ards.
If a tire frequently needs refilling, have it
checked by your Toyota dealer.
The following instructions for checking
tire pressure should be observed:
The pressure should be checked only
when the tires are cold. If your ve-
hicle has been parked for at least 3
hours and has not been driven for
more than 1.5 km or 1 mile since, you
will get an accurate cold tire pressure
reading.
Always use a tire pressure gauge.
The appearance of a tire can be mis-
leading. Besides, tire pressures that
are even just a few pounds off can
degrade handling and ride.
ProCarManuals.com
name. SIENNA (45403U)
265
Recommended oil viscosity (SAE):
COOLING SYSTEM
Total capacity, L (qt., Imp. qt.):
With rear heater 10.4 (11.0, 9.2)
Without rear heater 9.5 (10.0, 8.4)
Coolant type:
”Toyota Long Life Coolant” or equivalent
With ethylene−glycol type coolant for a
proper corrosion protection of aluminum
components
Do not use alcohol type antifreeze or
plain water alone.BATTERY
Open voltage
∗ at 20C (68F):
12.6—12.8 V Fully charged
12.2—12.4 V Half charged
11.8—12.0 V Discharged
∗: Voltage that is checked 20 minutes after
the key is removed with all the lights
turned off
Charging rates:
5 A max.
AUTOMATIC TRANSAXLE
Automatic transmission
Fluid capacity (drain and refill),
L (qt., Imp. qt.):
Up to 3.5 (3.7, 3.1)
Fluid type:
Automatic transmission fluid D−ll or
DEXRONIIl (DEXRONII)
Differential
Fluid capacity L (qt., Imp. qt.):
0.8 (0.8, 0.7)
Fluid type:
Automatic transmission fluid D−II or
DEXRONIII (DEXRONII)BRAKES
Minimum pedal clearance when depressed
with the pressure of 490 N (50 kgf, 110
lbf) with the engine running, mm (in.):
96 (3.8)
Pedal freeplay, mm (in.):
1—6 (0.04—0.24)
Pad wear limit, mm (in.):
1.0 (0.04)
Lining wear limit, mm (in.):
1.0 (0.04)
Parking brake adjustment when depressed
with the pressure of 294 N (30 kgf, 66
lbf):
3—5 clicks
Fluid type:
SAE J1703 or FMVSS No.116 DOT 3
STEERING
Wheel freeplay:
Less than 30 mm (1.2 in.)
Power steering fluid type:
Automatic transmission fluid DEXRONII
or III
ProCarManuals.com
name. SIENNA (45403U)
269
21. ECU−IG 15 A: Cruise control system,
anti−lock brake system, locking with
wireless remote control system, theft
deterrent system
22. IGN 5 A: Gauges and meters, charging
system, SRS airbag system, seat belt
pretensioners, multiport fuel injection
system/sequential multiport fuel injec-
tion system
23. STOP 15 A: Stop lights, cruise control
system, high−mounted stoplight, tail
lights
24. TAIL 10 A: Parking lights, front side
marker lights, license plate lights, tail
lights
25. PWR−VENT 15 A: Power rear quarter
windows
26. OBD 7.5 A: On−board diagnosis sys-
tem
27. PWR−OUTLET 15 A: Power outlet
28. STARTER 5 A: Gauges and meters,
SRS airbag system, seat belt preten-
sioners, multiport fuel injection system/
sequential multiport fuel injection sys-
tem
29. DOOR 20 A: Power door lock system,
theft deterrent system30. PANEL 7.5 A: Gauge and meter, car
audio system, clock, air conditioning
system, instrument panel light control,
rear window defogger, electronically
controlled automatic transmission sys-
tem, emergency flashers, parking lights
31. TURN 7.5 A: Turn signal lights, emer-
gency flashers
32. RADIO NO.2 7.5 A: Car audio system
33. CIG 15 A: Cigarette lighter, clock, pow-
er rear view mirror controls, SRS air-
bag system, seat belt pretensioners,
back−up lights, theft deterrent system
34. A/C 5 A: Air conditioning system
35. A/F HTR 25 A: EFI system
Fuses (type B)
36. CDS FAN 40 A: Electric cooling fans
37. RDI FAN 40 A: Electric cooling fans
38. CDS FAN 30 A: Electric cooling fans
39. RDI FAN 30 A: Electric cooling fans
40. MAIN 40 A: ”DRL”, ”H−LP RH” and
”H−LP LH” fuses
41. R/R A/C 40 A: Rear air conditioning
system
42. HTR 50 A: Air conditioning system
43. DEF 30 A: Rear window defogger,
”MIRROR−HEATER” fuse44. AM1 40 A: ”INP” fuse
45. PWR 30 A: Power windows, electric
moon roof, power seat, power sliding
door, ”PWR−VENT” fuse
Fuses (type C)
46. ALT 140 A: Charging system, ”FL
ABS”, ”INP”, ”HTR” and ”R/R A/C”
fuses
47. INP 100 A: ”AM1” and ”DEF” fuses
48. FL ABS 60 A: Anti−lock brake system
ProCarManuals.com