Toyota 2015 Sienna Manual page 31

Adjusting the seat belt shoulder anchor height (front and second
outside Tip-up seats)
Push the seat belt shoulder
1
anchor down while pressing the
release button.
Push the seat belt shoulder
2
anchor up.
Move the height adjuster up and
down as needed until you hear a
click.
Seat belt pretensioners (front seats)
The pretensioners help the seat
belt to quickly restrain the occu-
pant by retracting the seat belt
when the vehicle is subjected to
certain types of severe frontal or
side collision or a vehicle rollover.
The pretensioners do not activate
in the event of a minor frontal
impact, a side impact or a rear
impact.
Pre-collision seat belts (front seats of vehicles with pre-collision
system)
If the system determines that a collision is unavoidable, the front seat
belts will retract before the collision. (P. 296)
SIENNA_OM_01999-08001_(U)
1-1. For safe use
Release button
31
1