Lexus GX470 2004 Owner's Manual page 212

D If the driver's seat position does not allow sufficient
space for safe installation, install the child restraint
system on the second right seat.
OCCUPANT RESTRAINT SYSTEMS
" Align both third seatbacks at the same angle
D When installing a child restraint system in the third
center position, align both seatbacks at the same
angle. Otherwise, the child restraint system cannot
be securely restrained and this may cause death or
serious injuries in a collision.
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