Lexus ES300 Owner's Manual page 201

When play of one disc ends, the first track of the following disc
starts. When play of the final disc ends, play of the first disc
starts again.
The player will skip any empty disc trays.
Pushing the "DISC" button while playing a disc in the automatic
changer will switch from the disc in the changer to the disc in
the compact disc player.
If you push the "DISC" button when the source is other than the
compact disc, a disc in the compact disc player or automatic
changer, whichever was previously used, will play.
(c) Selecting a desired disc (with a compact disc changer
only)
Push the " " or " " button to select the disc number.
Push the button several times until the desired disc number
appears on the display. When you release the button, the
player will start playing the selected disc from the first track.
AUDIO
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