TOYOTA 2010 Sienna - Manual (Page 255)

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2-5. Driving information
2
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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 fuel 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.
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Weight limits
Confirm that the total trailer weight, gross vehicle weight, gross
axle weight and trailer tongue load are all within the limits.
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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 special equipment installed on your
vehicle.
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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