Toyota 2014 Sienna Manual page 130

1-3. Adjustable components (seats, mirrors, steering wheel)
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Adjusting the seat belt shoulder anchor height (front and
second outside Tip-up seats)
Third center seat belt
The third center seat belt is a 3-point type restraint with 2 buckles.
Both seat belt buckles must be correctly located and securely latched
for proper operation.
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Push the seat belt shoulder
anchor down while pressing
the release button.
Push the seat belt shoulder
anchor up.
Move the height adjuster up
and down as needed until you
hear a click.
Make sure that the buckle
securely latched for ready use of
the center seat belt.
Matches tab "B" with the
hooked end.
Matches tab "A" with the con-
cave end.
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