Lexus 2013 GS 350 Owner's Manual page 337

Feet
Adjusting the position of and opening and closing the air outlets
(Rear center outlets)
Direct air flow to the left or
1
right, up or down.
Turn the knob to open or close
2
the vent.
GS350_U (OM30C34U)
5-2. Using the air conditioning system and defogger
I n f o r ma t i o n P r o v i d e d b y :
5