Toyota Lexusc Owner's Handbook Manual page 259

OCCUPANT RESTRAINT SYSTEMS
(C) Booster seat installation
A booster seat must be used in forward-facing position
only.
240
" Move seat fully back
CAUTION
D A forward-facing child restraint system should be
allowed to be installed on the front passenger seat
only when it is unavoidable. Always move the seat as
far back as possible even if the "AIRBAG OFF"
indicator light is illuminated, because the front
passenger airbag could inflate with considerable
speed and force. Otherwise, the child may be killed
or seriously injured.