Toyota FJ CRUISER Owner's Manual page 68

Removing rear seat bottom cushions
When loading large luggage items, the cushion can be removed.
Do not remove the cushion for normal usage.
Dial
FJCRUISER_OM_General_OM35B53W
1-3. Adjustable components (seats, mirrors, steering wheel)
Push the lock release button
and fold down the seatback.
Loosen the bolts with a wrench
at first and turn the dials by hand
to remove them.
Hexagon
head bolt
1
67