Lexus 2006 lx 470 Manual page 206

OCCUPANT RESTRAINT SYSTEMS
Using a top strap
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Follow the procedure below for a child restraint system
that requires the use of a top strap.
184
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"Anchor brackets
Use an anchor bracket located behind the second seat on the
floor to attach the top strap.
Anchor brackets are installed for each second seating
position.
The symbol shown in the illustration indicates the locations of
anchor brackets.
Symbol