Toyota Display Audio system Owner's Manual page 445

If the child restraint has a top tether strap, the top tether strap
should be latched onto the top tether strap anchor.
( P. 123, 126, 127)
1-7. Safety information
Run the seat belt through the
child seat and insert the plate
into the buckle. Make sure that
the belt is not twisted.
Fully extend the shoulder belt
and then allow it to retract
slightly in order to activate the
ALR lock mode.
Lock mode allows the seat belt to
retract only.
While pushing the child seat into
the seat, allow the shoulder belt
to retract until the child seat is
securely in place.
After the shoulder
retracted to a point where there is
no slack in the belt, pull the belt to
check that it cannot be extended.
1
belt has
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