2011 Toyota Avalon Owners Manual - Page 714

1-7. Safety information 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 STEP 1 Secure the child restraint using a seat belt or LATCH anchors, and lock the head restraint in place at the lowest position. STEP 2 Open the anchor bracket cover, latch the hook onto the anchor bracket and tighten the top tether strap. Make sure the top tether strap is securely latched. 132