2012 Toyota Prius Owners Manual - Page 478

1-8. Safety information 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. STEP 3 Outside only: Do the following. Foldable type Adjust the head restraint to the downmost position. Non-foldable type Install the head restraint. 174