towing TOYOTA SIENNA 1999 User Guide

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Because of the added load of the trail-
er, your vehicle’s engine may overheat
on hot days (at temperatures over
30C [85F]) 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” in Part 4 of
this manual.
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” position,
start the engine. Be sure to keep the
brake pedal depressed.
2. Shift into gear.
3. Release the parking brake and brake
pedal and slowly pull or back away
from the wheel blocks. Stop and apply
your brakes.
4. Have someone retrieve the blocks.
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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(b) Starting a flooded engine
If the engine will not start, your engine
may be flooded because of repeated
cranking.
If this happens, turn the key to ”START”
with the accelerator pedal held down.
Keep the key and accelerator pedal so for
15 seconds and release them. Then try
starting the engine with your foot off the
accelerator pedal.
If the engine does not start after 15 se-
conds of cranking, release the key, wait
a few minutes and try again.
If the engine still will not start, it needs
adjustment or repair. Call a Toyota dealer
or qualified repair shop for assistance.
NOTICE
Do not crank for more than 30 se-
conds at a time. This may overheat
the starter and wiring systems.
(c) Jump starting
To avoid serious personal injury and
damage to your vehicle which might re-
sult from battery explosion, acid burns,
electrical burns, or damaged electronic
components, these instructions must be
followed precisely.
If you are unsure about how to follow this
procedure, we strongly recommend that
you seek the help of a competent me-
chanic or towing service.
CAUTION
Batteries contain sulfuric acid
which is poisonous and corrosive.
Wear protective safety glasses when
jump starting, and avoid spilling
acid on your skin, clothing, or ve-
hicle.
If you should accidentally get acid
on yourself or in your eyes, remove
any contaminated clothing and flush
the affected area with water imme-
diately. Then get immediate medical
attention. If possible, continue to
apply water with a sponge or cloth
while en route to the medical office.
The gas normally produced by a
battery will explode if a flame or
spark is brought near. Use only
standardized jumper cables and do
not smoke or light a match while
jump starting.
NOTICE
The battery used for boosting must
be 12 V. Do not jump start unless you
are sure that the booster battery is
correct.
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—After changing wheels
11. Check the air pressure of the re-
placed tire.
Adjust the air pressure to the specification
designed in Part 8. If the pressure is low-
er, drive slowly to the nearest service sta-
tion and fill to the correct pressure.
Do not forget to reinstall the tire inflation
valve cap as dirt and moisture could get
into the valve core and possibly cause air
leakage. If the cap is missing, have a new
one put on as soon as possible.
12. Restow all the tools, jack and flat
tire securely.
As soon after changing wheels as pos-
sible, tighten the wheel nuts to the torque
specified in Part 8 with a torque wrench
and have a technician repair the flat tire.
Vehicles with a spare tire of the same
size as the installed tires—
13. Push the tire pressure warning sys-
tem reset switch.
Initial adjustment of the tire pressure
warning system is necessary after you
have replaced your tires or wheels. See
”Tire pressure warning system” in Chapter
1−8.CAUTION
Before driving, make sure all the
tools, jack and flat tire are securely
in place in their storage location to
reduce the possibility of personal in-
jury during a collision or sudden
braking.
(a) Towing with wheel lift type truck—
—From front
—From rear
(b) Using flat bed truck
If your vehicle needs to be
towed—
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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.
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—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.
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Tires
Tire sizeTire pressure,
kPa (kgf/cm2 or bar, psi)Wheel size
P205/70R15 95S 240 (2.4, 35) 15  6.5JJ
220 (2.2, 32)
∗
1
240 (2.4, 35)∗
2
T145/80D16 420 (4.2, 60)
15  6.5JJ
16  4T P215/65R15 95S Normal driving
Trailer towing
Tire sizeTire pressure,
kPa (kgf/cm
2 or bar, psi)Wheel size
P205/70R15 95S 240 (2.4, 35) 15  6.5JJ
240 (2.4, 35)
15  6.5JJ P215/65R15 95S
When driving under the above vehicle load conditions at sustained high
speeds above 160 km/h (100 mph), in countries where such speeds are
permitted by−law, inflate the front and rear tires to 240 kPa (2.4 kgf/cm
2
or bar, 35 psi) provided that it does not exceed the maximum cold tire
pressure molded on the tire sidewall. Tire size and pressure:
∗
1: Vehicle load up to 6 passengers∗
2: Up to vehicle capacity weightWheel nut torque, N·m (kgf·m, ft·lbf):
104 (10.5, 77)
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Fuses
Engine compartment
(with towing package)Engine compartment
(without towing package)
Engine compartment
(without daytime running light system)
Fuses (type A)
1. SPARE 10 A: Spare fuse
2. SPARE 15 A: Spare fuse
3. SPARE 30 A: Spare fuse
4. ALT−S 5 A: Charging system
5. H−LP RH 15 A: Right−hand headlight
6. EFI 15 A: Multiport fuel injection sys-
tem/sequential multiport fuel injection
system
7. HORN 10 A: Horn, theft deterrent sys-
tem
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