Toyota Lexusc Owner's Handbook Manual page 343

AUDIO
(e) Your compact disc player with changer
Your compact disc player with changer can store up to 6 discs
and play selected discs or continuously play all the discs set in
the player.
324
When you set discs into the player, make sure their labels face
up. If not, the player will display "ERROR 1" and the disc
number.