2009 TOYOTA SIENNA Owners Manual

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2-5. Driving information
2
When driving
Vehicle load limits
■Total load capacity and seating capacity
These details are also described on the tire and loading information
label. (P. 463)
CAUTION
■Overloading the vehicle
Do not overload the vehicle.
It may not only cause damage to the ti res, but also degrade steering and
braking ability, resulting in an accident.
Vehicle load limits include total load capacity, seating capacity,
towing capacity and cargo capacity.
■ Total load capacity: ( P. 542)
Total load capacity means the combined weight of occupants, cargo
and luggage.
■ Seating capacity:
7-passenger models
Total 7 (Front 2, Rear 5)
8-passenger models
Total 8 (Front 2, Rear 6)
Seating capacity means the maxi mum number of occupants whose
estimated average weight is 150 lb. (68 kg) per person.
■ Towing capacity
Without towing package: 1200 lb. (544 kg)
With towing package: 3500 lb. (1585 kg)
Towing capacity means the maximu m 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.

226
2-5. Driving information
Winter driving tips
Carry out the necessary preparations and inspections before driving
the vehicle in winter. Always drive the vehicle in a manner appropri-
ate to the prevailing weather conditions.
■ Pre-winter preparations
●Use fluids that are appropriate to the prevailing outside tem-
peratures.
• Engine oil
• Engine coolant
• Washer fluid
● Have a service technician inspect the level and specific grav-
ity of battery electrolyte.
● Have the vehicle fitted with four snow tires or purchase a set
of tire chains for the front tires.
Ensure that all tires are the same size and brand, and that chains
match the size of the tires.
■Before driving the vehicle
Perform the following according to the driving conditions.
●Do not try to forcibly open a window or move a wiper that is
frozen. Pour warm water over the frozen area to melt the ice.
Wipe away the water immediately to prevent it from freezing.
● To ensure proper operation of th e climate control system fan,
remove any snow that has accumulated on the air inlet vents
in front of the windshield.
● Remove any ice that has accumu lated on the vehicle chassis.
● Periodically check for and remove any excess ice or snow
that may have accumulated in the wheel well or on the
brakes.

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2-5. Driving information
2
When drivingSelecting tire chains
Use the tire chains of correct size and type.
Use SAE Class “S” type radial tire chains, with the exception of radial
cable chains or V-bar type chains.
Regulations on the use of snow chains
● Regulations regarding the use of tire chains vary according to loca-
tion and type of road. Always check local regu lations before install-
ing chains.
● Install the chains on the front tires.
● Retighten the chains after drivi ng 1/4 - 1/2 mile (0.5 - 1.0 km).
■Snow chain installation
Observe the following precautions when installing and removing chains.
●Install and remove tire chains in a safe location.
● Install tire chains on the front tires only. Do not install tire chains on rear
tires.
● Install tire chains following the instructions provided in the accompanying
manual.
■ When driving the vehicle
Accelerate the vehicle slowly and drive at a reduced speed suit-
able to road conditions.
■ When parking the vehicle
Park the vehicle and move the shift lever to P without setting the
parking brake. The parking brak e may freeze up, preventing it
from being released.

228 2-5. Driving information
CAUTION
■Driving with snow tires
Observe the following precautions to reduce the risk of accidents.
Failing to do so may result in a loss of vehicle control and cause death or
serious injury.
●Use tires of the size specified for your vehicle.
● Maintain the recommended level of air pressure.
● Do not drive in excess of 75 mph (120 km/h), regardless of the type of
snow tires being used.
● Snow tires should be installed on all wheels.
■ Driving with tire chains
Observe the following precautions to reduce the risk of accidents.
Failing to do so may result in the vehicle being unable to be driven safely,
and may cause death or serious injury.
●Do not drive in excess of the speed limit specified for the tire chains being
used or 30 mph (50 km/h), whichever is lower.
● Avoid driving on bumpy road surfaces or over potholes.
● Avoid sudden turns and braking, as use of chains may adversely affect
vehicle handling.
● Slow down sufficiently before entering a curve to ensure that vehicle con-
trol is maintained.
NOTICE
■Repairing or replacing snow tires
Request repairs of and obtain replacement snow tires from Toyota dealers or
legitimate tire retailers.
This is because the removal and attachment of snow tires affects the opera-
tion of the tire pressure warning valves and transmitters.
■ Fitting tire chains
The tire pressure warning valves and transmitters may not function correctly\
when tire chains are fitted.

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2-5. Driving information
2
When driving
Trailer towing
Your vehicle is designed primarily as a passenger-carrying vehicle.
Towing a trailer will have an adverse effect on handling, perfor-
mance, braking, durability, and fu el consumption. For your safety
and the safety of others , do not overload the vehicle or trailer.
Toyota warranties do not apply to damage or malfunction caused by
towing a trailer for commercial purposes.
■ Weight limits
Confirm that the total trailer weight, gross vehicle weight, gross
axle weight and trailer tongue load are all within the limits.
■ Gross vehicle weight
The gross vehicle weight must not exceed the Gross Vehicle
Weight Rating (GVWR) indicated on the Certification Label. The
gross vehicle weight is the sum weight of the unloaded vehicle,
driver, passengers, luggage, hitch and trailer tongue load. Also
included is the weight of any sp ecial equipment installed on your
vehicle.
■ Gross axle weight
The load on either the front or rear axle resulting from distribu-
tion of the gross vehicle weight on both axles must not exceed
the Gross Axle Weight Rating (GAWR) listed on the Certification
Label.
Certification label

230 2-5. Driving information
Towing a trailerContact your Toyota dealer for further information about additional
requirements such as a towing kit, etc.
■ Trailer tongue load
The trailer cargo load should be distributed so that the tongue
load is 9 to 11% for weight carrying hitch or 15% for weight dis-
tributing hitch of the total trailer weight, not exceeding the maxi-
mum load of the following. (Tongue load / Total trailer weight x
100 = 9 to 11% or 15%)
Without towing package: 120 lb. (54 kg)
With towing package: 350 lb. (158 kg)
The total trailer weight and tongue load can be measured with
platform scales found at high way weighing stations, building
supply companies, trucking co mpanies, junk yards, etc.
Total trailer weight
Tongue load

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2-5. Driving information
2
When driving
Hitch
Trailer hitch assemblies have different weight capacities established
by the hitch manufacturer. Even th ough the vehicle may be rated for
towing a higher weight, the operat or must never exceed the maxi-
mum weight rating specified for the trailer hitch.
■ Before towing
●Ensure that your vehicle’s tires are properly inflated. ( P. 463)
● Trailer tires should be inflated according to the trailer manufacturer's rec-
ommendation.
● All trailer lights must work in order to be legal.
● Confirm all lights work each time you connect them.
● Check that your vehicle remains level when a loaded or unloaded trailer
is hitched. Do not drive if the vehicle is not level, and check for improper
tongue load, overloading, worn suspension, or other possible causes.
● Make sure the trailer cargo is securely loaded.
● Check that your rear view mirrors c onform to any federal, state/provincial
or local regulations. If they do not, inst all rear view mirrors appropriate for
towing purposes.
■ Break-in schedule
Toyota recommends that you do not use a new vehicle or a vehicle with any
new power train components (engine, transmission, differential, wheel bear-
ings, etc.) to tow a trailer for the first 500 miles (800 km) of driving.
■ Maintenance
●If you tow a trailer, your vehicle will require more frequent maintenance
due to the additional load. (See “Scheduled Maintenance Guide” or
“Owner's Manual Supplement”.)
● Retighten the fixing bolts of the towing ball and bracket after approxi-
mately 600 miles (1000 km) of trailer towing.

232 2-5. Driving information
CAUTION
■To avoid accident or injury
●Do not exceed the trailer hitch assembly weight, gross vehicle weight,
gross axle weight and trailer tongue load capacities.
● Never load more weight in the back than in the front of the trailer. About
60% of the load should be in the front half of the trailer, and the remaining
40% in the rear.
● Do not use cruise control when you are towing.
● Do not tow the vehicle with the compact spare tire installed.
■ Hitches
●Use only a hitch that conforms to the total trailer weight requirement.
● Follow the directions supplied by the hitch manufacturer.
● Lubricate the hitch ball with a light coat 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.
■ When towing a trailer
●If the gross trailer weight exceeds 1000 lb. (453 kg), trailer brakes are
required. Toyota recommends trailers with brakes that conform to all appli-
cable federal and state/provincial regulations.
● Never tap into your vehicle's hydraulic system, as this will lower the vehi-
cle's 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 into another lane.