Lexus LX 470 Owner's Manual page 164

COMFORT ADJUSTMENT
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2. Fix the child restraint system with the seat belt.
3. Take off the carpet, latch the hook onto the anchor
bracket and tighten the top strap.
For instructions to install the child restraint system, see "Types
of child restraint system" on page 130.
CAUTION
D Make sure the top strap is securely latched, and
check that the child restraint system is secure by
pushing and pulling it in different directions.
D Follow all the installation instructions provided by its
manufacturer.
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4. Replace the head restraint.