Lexus GX470 2004 Owner's Manual page 149

OCCUPANT RESTRAINT SYSTEMS
NOTICE
The seat belts and the buckles must be stowed before
you remove the seats.
1. Lower the outside head restraints to the lowest position
and remove the center head restraint.
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2. Unfasten the zippers behind the right side seatback and
stow the center head restraint into the seatback.
3. Unlock the seatbacks by pushing the lock release