Toyota Sienna 2010 Owner's Manual page 222

2-5. Driving information
CAUTION
Roof luggage carrier precautions
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When you load cargo on the roof luggage carrier, observe the following:
Place the cargo so that its weight is distributed evenly between the
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front and rear axles.
If loading long or wide cargo, never exceed the vehicle overall length
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or width. (→P. 542)
Before driving, make sure the cargo is securely fastened on the roof
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luggage carrier.
Loading cargo on the roof luggage carrier will make the center of the
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vehicle gravity higher. Avoid high speeds, sudden starts, sharp turns,
sudden braking or abrupt maneuvers, otherwise it may result in loss of
control or vehicle rollover due to failure to operate this vehicle correctly
and result in death or serious injury.
If driving for a long distance, on rough roads, or at high speeds, stop
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the vehicle now and then during the trip to make sure the cargo
remains in its place.
Do not exceed 150 lb. (68 kg) cargo weight on the roof luggage carrier.
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Cross rail adjustment
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Make sure the cross rails are locked securely by pushing forward and
rearward them.
Failure to do so may cause an unexpected accident or severe injury in
the event of emergency braking or a collision.
NOTICE
When loading the luggage
■
Be careful not to scratch the surface of the moon roof.
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