Toyota Lexusc Owner's Handbook Manual page 309

AIR CONDITIONING
(d) Side vents and rear vents
" Side vents
" Rear vents
290
If air flow control is not satisfactory, check the side vents
and rear vents. The side vents and rear vents may be
opened or closed as shown.
When outside temperature is cold like a winter season, air flow
temperature from the side vents and rear vents may not be
warmed up enough for a while until that the engine coolant
temperature becomes high enough.
If air flow from the side vents and rear vents is not satisfactory,
air flow direction can be changed manually by adjusting the
vents fin direction or the vents may be closed.