Lexus LX 570 Owner's Manual page 160

1-7. Safety information
Open the anchor bracket cover, latch the hook onto the anchor
STEP 2
bracket and tighten the top tether strap.
Outside
Center
STEP 3
160
LX570_OM_OM60L96U_(U)
Make sure the top tether strap is
securely latched.
Outside only: Adjust the head
restraint to the downmost position.