R8 Quattro Coupe (423) V8-4.2L (BYH) (2011)
Compact Disc Player (CD): Technical Service Bulletins
Audio System - CD Player Information
91 CD playback problems with nonstandard CDs
91 10 09
2013159/4
March 19, 2010.
Supersedes Technical Service Bulletin Group 91 number 08-178 dated December 15, 2008 for reasons listed below.
Affected Vehicles
Condition
The CD player (in-dash or external) has playback problems with one or several of the following symptoms:
^ It is not possible to play a CD. (Cause: anti-copy protection, wrong data carrier, e.g. DVD, mp3-CD etc.)
^ After inserting the CD, the message CD error appears. (Cause: anti-copy protection, dirty or scratched CD.)
^ The CD is played with a delay of several minutes after inserting the CD in the radio/CD changer. (Cause: anticopy protection.)
^ The playback of a track is aborted and continues with the next track. In the worst case, the system skips between various tracks. (Cause: anti-copy
protection or poor quality of self-burned CDs.)
^ A CD is played with cracking noises or short hesitations. (Cause: anti-copy protection or poor quality of selfburned CDs.)
^ The CD cannot be inserted in the drive or is ejected again. (Cause: rough outer edge of the CD, self-made CD label, audio DVD with thicker data
carrier, special formats, two CDs in a slot.)
^ NO CD ID displayed although a CD has been inserted. (Cause: poor quality of the reflection coating with writable CDs.)
Tip: The symptoms may differ between Audi sound system packages.
Technical Background
The audio CD in use doesn't meet the Red Book specifications because of anti-copy protection or poor CD quality.
The technical standard "Red Book" for music CDs was agreed upon in 1982 by several manufacturers of CD players. It defines the requirements for
audio CDs with the label "Compact Disc Digital Audio." CD drives develop different problems with CDs that violate one or several points of the
standard.
Production Solution
No change.