Kia Optima 2004 Owner's Manual page 31

NOTICE:
When returning the rear seatbacks to
the upright position, remember to
return the rear shoulder belts to their
proper position. Routing the safety
belt webbing through the rear safety
belt guides will help keep the belts
from being trapped behind or under
the seats.
3-22
KNOWING YOUR VEHICLE
REAR SEATBACK LOCK
FREE LOCK
Rear seatback lock lever(located on the
backside of the rear seatback)is in the
"LOCK" position when the rear
seatbacks are closed, it will not be
possible to fold the rear seatback by
using the release lock lever. In this
instance, move the lock lever to the
"FREE" position and fold the rear
seatback. The rear seatback lock lever is
designed to provide protection from
unauthorized entry into the trunk.
REAR SEAT ARMREST
(IF EQUIPPED)
EMSA3018
This armrest is located in the center of
the rear seatback.
Open the armrest cover by pressing the
button on it, there are cup holder and
compartment.
EMSA3019