Lexus GS460 Owner's Manual page 318

3-3. Using the audio system
Selecting a folder (USB memory only)
■ Selecting a folder
Touch "Folder " or " " on the screen to select the next/previous
folder.
■ Selecting a folder from the list
Touch "Select" for Folder on the screen.
STEP 1
STEP 2
■ Selecting the desired folder by cueing the first file of each folder
(USB memory only)
Touch and hold "SCAN" on the screen until "FLD.SCAN" appears. 
Touch "SCAN" once again when the desired folder is reached.
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GS_G_U (OM30C11U)
May 21, 2010 1:06 pm
Touch the desired folder number.
or : Moves the list in steps of 5
This function is available only when
the vehicle is not moving.