Lexus 2003 LS Owner's Manual page 222

AUDIO
(f) Your automatic changer
20L268a
To use the automatic changer, push the panel.
20L269
208
NOTICE
Do not put any object on the panel or push it hard. Doing
this may damage the panel.
20L152a
Your automatic changer can store up to 6 discs and play
selected discs or continuously play all the discs set in the
player.
When you set discs into the player, make sure their labels face
up. If not, the player will display "ERROR1" and the disc
number.
NOTICE
R Never try to disassemble or oil any part of the
compact disc player. Do not insert anything except
a compact disc into the slot.