03 SIENNA_U (L/O 0207)
2482003 MY SIENNA (OM45410U)
A safety chain must always be used
between the towing vehicle and the
trailer. Leave sufficient slack in the
chain for turns. The chain should
cross under the trailer tongue to
prevent the tongue from dropping to
the ground in case it becomes dam-
aged or separated. For correct safety
chain procedures, follow the hitch or
trailer manufacturer ’s recommenda-
tions.
CAUTION
If the total trailer weight exceeds
453 kg (1000 lb.), trailer brakes are
required.
Never tap into your vehicle’s hy-
draulic system as it would lower its
braking effectiveness.
Never tow a trailer without using a
safety chain securely attached to
both the trailer and the vehicle. If
damage occurs to the coupling unit
or hitch ball, there is danger of the
trailer wandering over into another
lane.
TIRES
Ensure that your vehicle’s tires are
properly inflated. Adjust the tire pres-
sure to the recommended cold tire
pressure indicated below. (See Section
7 2 and Section 8 for instructions.):
Tire pressure, kPa (kgf/cm
2 or bar, psi)
240 (2.4, 35)
The trailer tires should be inflated to
the pressure recommended by the trail-
er manufacturer in respect to the total
trailer weight.
TRAILER LIGHTS
Trailer lights must comply with federal,
state/provincial and local regulations.
See your local recreational vehicle
dealer or rental agency for the correct
type of wiring and relays for your trail-
er. Check for correct operation of the
turn signals and stop lights each time
you hitch up. Direct splicing may dam-
age your vehicle’s electrical system
and cause a malfunction of your lights. BREAK IN SCHEDULE
Toyota recommends that you do not
tow a trailer with a new vehicle or a
vehicle with any new power train com-
ponent (engine, transmission, differen-
tial, wheel bearing, etc.) for the first
800 km (500 miles) of driving.
MAINTENANCE
If you tow a trailer, your vehicle will
require more frequent maintenance due
to the additional load. For this
information, please refer to the
scheduled maintenance information in
the “Scheduled Maintenance Guide” or
“Owner ’s Manual Supplement”.
Retighten all fixing bolts of the towing
ball and bracket after approximately
1000 km (600 miles) of trailer driving.
PRE TOWING SAFETY CHECK
Check that your vehicle remains level
when a loaded or unloaded trailer is
hitched. Do not drive if the vehicle has
an abnormal nose up or nose down
condition, and check for improper
tongue load, overload, worn suspension
or other possible causes.
Make sure the trailer cargo is securely
loaded so that it cannot shift.
03 SIENNA_U (L/O 0207)
3252003 MY SIENNA (OM45410U)
Wheel nut torque, N·m (kgf·m, ft·lbf):104 (10.5, 77)
NOTE: For a complete information on tires (e.g. replacing tires or re-
placing wheels), see “Checking
tire pressure” through “Aluminum
wheel precautions” in Section 7 2.
Tires
Tire size Wheel size
P205/70R15 95S 240 (2.4, 35)
220 (2.2, 32)
∗ 1
240 (2.4, 35)∗2
T145/80D16 420 (4.2, 60) 15
61/2JJ
16 4T
P215/65R15 95S
Tire size Wheel size
P205/70R15 95S 240 (2.4, 35) 1561/2JJ
240 (2.4, 35) 1561/2JJ
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.
∗ 1: Vehicle load up to 6 passengers∗2: Up to vehicle capacity weight
Normal driving
Trailer towing Tire size and pressure:
Tire pressure,
kPa (kgf/cm
2 or bar, psi)
Tire pressure,
kPa (kgf/cm
2 or bar, psi) 15
61/2JJ
