2016 TOYOTA SIENNA Owners Manual

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Vehicle load limits
◆Total load capacity (vehicle capacity weight): P. 5 9 8
Total load capacity means the combined weight of occupants, cargo
and luggage.
◆Seating capacity
Without second center seat: 7 occupants (Front 2, Rear 5)
With second center seat: 8 occupants (Front 2, Rear 6)
Seating capacity means the maxi mum number of occupants whose
estimated average weight is 150 lb. (68 kg) per person.
◆TWR (Trailer Weight Rating): P. 214, 598
TWR means the maximum gross trailer weight (trailer weight plus
its cargo weight) that your vehicle is able to tow.
◆Cargo capacity
Cargo capacity may increase or decrease depending on the weight
and the number of occupants.
■Total load capacity and seating capacity
These details are also described on the tire and loading information label.
(  P. 500)
Vehicle load limits include total load capacity, seating capacity,
TWR (Trailer Weight Rati ng) and cargo capacity.
WARNING
■Overloading the vehicle
Do not overload the vehicle.
It may not only cause damage to the tires, but also degrade steering
and braking ability, resulting in an accident.

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Trailer towing (with towing package)
Contact your Toyota dealer for further information about additional
requirements such as a towing kit, etc.
■GCWR (Gross Combination Weight Rating)
The maximum allowable gross
combination weight. The gross
combination weight is the sum
of the total vehicle weight
(including the occupants, cargo
and any optional equipment
installed on the vehicle) and the
weight of the trailer being towed
(including the cargo in the
trailer).
Your vehicle is designed primarily as a passenger-and-load-car-
rying vehicle. Towing a trailer can have an adverse impact on
handling, performance, braking, durability, and fuel consump-
tion. For your safety and the safe ty of others, you must not over-
load your vehicle or trailer. You must also ensure that you are
using appropriate towing equipmen t, that the towing equipment
has been installed correctly a nd used properly, and that you
employ the requisite driving habits.
Vehicle-trailer stability and braking performance are affected by
trailer stability, brake performance and setting, trailer brakes,
the hitch and hitch systems (if equipped).
To tow a trailer safely, use extreme care and drive the vehicle in
accordance with your trailer’s characteristics and operating
conditions.
Toyota warranties do not apply to damage or malfunction
caused by towing a trailer for commercial purposes.
Towing related terms

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■GVWR (Gross Vehicle Weight Rating)
The maximum allowable gross
vehicle weight. The gross vehi-
cle weight is the total weight of
the vehicle. When towing a
trailer, it is the sum of the vehi-
cle weight (including the occu-
pants, cargo and any optional
equipment installed on the vehi-
cle) and the tongue weight.
■GAWR (Gross Axle Weight Rating)
The maximum allowable gross
axle weight. The gross axle
weight is the load placed on
each axle (front and rear).
Front GAWR
Rear GAWR

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■TWR (Trailer Weight Rating)
The maximum allowable gross
trailer weight. The gross trailer
weight is the sum of the trailer
weight and the weight of the
cargo in the trailer.
TWR is calculated assuming
base vehicle with one driver,
one front passenger, towing
package, hitch and hitch sys-
tems (if required).
Additional optional equipment, passengers and cargo in the vehicle will
reduce the trailer weight rating so as not to exceed GCWR, GVWR and
GAWR.
If the gross trailer weight exceeds 3000 lb. (1360 kg), it is recommended
to use a trailer with 2 or more axles.
■
Unbraked TWR (Unbraked Trailer Weight Rating)
The trailer weight rating for tow-
ing a trailer without a trailer ser-
vice brake system.
■Tongue Weight
The load placed on the trailer
hitch ball. ( P. 215)
(With brakes)
(Without brakes)

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●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 Certifi-
cation 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.
Weight limits
: The towing package is required. Toyota does not recommend towing with this vehicle without the towing
package.

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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)
GCWR, TWR and Unbraked TWR
: 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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●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 sta-
tion, building supply company, trucking company, junk yard, etc.
Trailer hitch assemblies have different weight capacities. Toyota rec-
ommends the use of Toyota hitch/bracket 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 conforms 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 subs tances into the vehicle.
Trailer Tongue Weight
1
2
Hitch

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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 cou-
pler. Most couplers are stamped
with the required trailer ball size.
Shank length
Protrudes beyond the bottom of the lock washer and nut by at least 2
threads.
Shank diameter
Matches the ball mount hole diameter size.
Selecting trailer ball
Trailer classTypical trailer ball
size
IV2 5/16 in.
II and III2 in.
I1 7/8 in.
1
2
3
4