TOYOTA 2011 Highlander - Manual (Page 159)

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1-7. Safety information
1
Before driving
Removing a child restraint installed with a seat belt
Push the buckle release button
and fully retract the seat belt.
Child restraint systems with a top tether strap (second seat only)
Secure the child restraint using
the seat belt or lower anchors,
and adjust the head restraint to
the upmost position. STEP 1