2014 TOYOTA SIENNA Owners Manual

377
2-5. Driving information
2
When driving
SIENNA_OM_OM45483U_(U)
Weight limits
● The gross trailer weight must never exceed 3500 lb. (1588 kg).*
● The gross combination weight must never exceed the GCWR
described below.
2WD models: 8900 lb. (4037 kg)*
AWD models: 8990 lb. (4078 kg)* ●The gross vehicle weight must
never exceed the GVWR indi-
cated on the Certification
Label.
● The gross axle weight on each
axle must never exceed the
GAWR indicated on the Certi-
fication Label.
● If the gross trailer weight is over the unbraked TWR, trailer service
brakes are required.
● If the gross trailer weight is over 2000 lbs. (907 kg), a sway control
device with sufficient capacity is required.
: The towing package is required.
Toyota does not recommend towing with this vehicle without the towing
package.

378 2-5. Driving information
SIENNA_OM_OM45483U_(U)
GCWR, TWR and Unbraked TWR Confirm that the gross trailer weight, gross combination weight, gross
vehicle weight, gross axle weight and tongue weight are all within the
limits.
■ GCWR

2WD models: 8900 lb. (4037 kg)
AWD models: 8990 lb. (4078 kg)
■ TWR

3500 lb. (1588 kg)
■ Unbraked TWR

1000 lb. (454 kg)
: These models meet the tow-vehicle trailering requirement of SAE Interna-
tional per SAE J2807.
The towing package is required.
Toyota does not recommend towing with this vehicle without the towing
package.

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2-5. Driving information
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When driving
SIENNA_OM_OM45483U_(U)
Trailer Tongue Weight
● A recommended tongue weight varies in accordance with the types
of trailers or towing as described below.
● To ensure the recommended values shown below, the trailer must
be loaded by referring to the following instructions.
• Tongue Weight
The gross trailer weight should be distributed so that the tongue
weight is 9 to 11 %.
(Tongue weight / Gross trailer weight  100 = 9 to 11 %)
Gross trailer weight
Tongue weight
The gross trailer weight, gross axle weight and tongue weight
can be measured with platform scales found at a highway
weighing station, building supply company, trucking company,
junk yard, etc.

380 2-5. Driving information
SIENNA_OM_OM45483U_(U)
HitchTrailer hitch assemblies have different weight capacities. Toyota rec-
ommends the use of Toyota hitch/brac ket for your vehicle. For details,
contact your Toyota dealer.
● If you wish to install a trailer hitch, contact your Toyota dealer.
● Use only a hitch that c onforms to the gross trailer weight require-
ment of your vehicle.
● Follow the directions supplied by the hitch manufacturer.
● Lubricate the hitch ball with a light coating of grease.
● Remove the trailer hitch whenever you are not towing a trailer.
After removing the hitch, seal any mounting hole in the vehicle
body to prevent entry of any substances into the vehicle.

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2-5. Driving information
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When driving
SIENNA_OM_OM45483U_(U)
Selecting trailer ball
Use the correct trailer ball for your application. Trailer ball load rating
Matches or exceeds the gross
trailer weight rating of the trailer.
Ball diameter
Matches the size of the trailer
coupler. Most couplers are
stamped with the required trailer
ball size.
Shank length
Protrudes beyond the bottom of
the lock washer and nut at least 2
threads.
Shank diameter
Matches the ball mount hole
diameter size.
Trailer
classTypical trailer ball
size
IV2 5/16 in.
II and III2 in.
I1 7/8 in.

382 2-5. Driving information
SIENNA_OM_OM45483U_(U)
Positions for towing hitch receiverHitch receiver pin hole posi-
tion: 37.3 in. (949.8 mm)
Connecting trailer lightsPlease consult your dealer when inst alling trailer lights, as incorrect
installation may cause damage to the vehicle’s lights. Please take
care to comply with your state’ s laws when installing trailer lights.

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2-5. Driving information
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When driving
SIENNA_OM_OM45483U_(U)
Trailer towing tips
Your vehicle will handle differently when towing a trailer. Help to avoid
an accident, death or serious injury, keep the following in mind when
towing:
● Speed limits for towing a trailer vary by state or province. Do not
exceed the posted towing speed limit.
● Toyota recommends that the vehicle-trailer speed limit is 65 mph
(104 km/h) on a flat, straight, dry road. Do not exceed this limit, the
posted towing speed limit or the speed limit for your trailer as set
forth in your trailer owner’s man ual, whichever is lowest. Instability
of the towing vehicle-trailer combin ation (trailer sway) increases as
speed increases. Exceeding speed limits may cause loss of con-
trol.
● Before starting out, check the trailer lights, tires and the vehicle-
trailer connections. Recheck after driving a short distance.
● Practice turning, stopping and reve rsing with the trailer attached in
an area away from traffic until you become accustomed to the feel
of the vehicle-trailer combination.

384 2-5. Driving information
SIENNA_OM_OM45483U_(U)●
Reversing with a trailer attached is difficult and requires practice.
Grip the bottom of the steering wheel and move your hand to the
left to move the trailer to the left. Move your hand to the right to
move the trailer to the right. (This is generally opposite to reversing
without a trailer attached.) Avoid sharp or prolonged turning. Have
someone guide you when reversing to reduce the risk of an acci-
dent.
● As stopping distance is increased when towing a trailer, vehicle-to-
vehicle distance should be increased. For each 10 mph (16 km/h) of
speed, allow at least one vehicle and trailer length.
● Avoid sudden braking as you may skid, resulting in the trailer jack-
knifing and a loss of vehicle control. This is especially true on wet
or slippery surfaces.
● Avoid jerky starts or sudden acceleration.
● Avoid jerky steering and sharp turns, and slow down before mak-
ing a turn.
● Note that when making a turn, th e trailer wheels will be closer than
the vehicle wheels to the inside of the turn. Compensate by making
a wider than normal turning radius.
● Slow down before making a turn, in crosswinds, on wet or slippery
surfaces, etc.
Increasing vehicle speed c an destabilize the trailer.