Toyota Lexusc Owner's Handbook Manual page 186

Folding down rear seatbacks
" Before folding down rear seatbacks
Stow the rear seat belt buckles as shown above.
NOTICE
The seat belts and the buckles must be stowed before
you fold down the rear seatbacks.
OCCUPANT RESTRAINT SYSTEMS
" Seat belt hanger
For the outer seat belts, use the seat belt hangers to
prevent the belts from being tangled.
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