TOYOTA 2011 Prius - Manual (Page 344)

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3-2. Using the audio system
PRIUS_U (OM47685U) DVD
NOTICE
n CDs and adapters that cannot be used
Do not use the following types of CDs, 3 in. (8 cm) CD adapters or Dual
Disc.
Doing so may damage the player and/or the CD insert/eject function.
l CDs that have a diameter that is not
4.7 in. (12 cm).
l Low-quality and deformed CDs.
l CDs with a transparent or translucent
recording area.
l CDs that have tape, stickers or CD-R
labels attached to them, or that have
the label peeled off.