Toyota PRIUS C 2019 Manual page 66

66
1-1. For safe use
Fully extend the shoulder belt
3
and allow it to retract to put it
in lock mode. In lock mode,
the belt cannot be extended.
While
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restraint system down into
the rear seat, allow the
shoulder belt to retract until
the child restraint system is
securely in place.
After the shoulder belt has
retracted to a point where there
is no slack in the belt, pull the
belt to check that it cannot be
extended.
PRIUS c_U
pushing the child