Audio System - CD Drive Malfunction
91 Generation 3 CAN radio: CD drive malfunction
91 10 70
665
2021780/3
October 26, 2010
Supersedes Technical Service Bulletin Group 91 number 10-18 dated April 27, 2010 for reasons listed below.
APPLICABLE VEHICLES
CONDITION
^ The following sequence of error messages is seen on the radio display screen after a CD was loaded into or removed from the internal CD drive:
^ Drive defective.
The error could be corrected by resetting it (see radio system owner's manual). Otherwise, contact your Audi dealer."
^ "The CD-drive is damaged and was therefore deactivated."
666
^ The CD drive cannot be selected in the Source list and is described as "damaged."
^ After the ignition is cycled or a radio reset performed, the CD drive is fully operational.
^ DTC 00468 (CD-ROM Drive -R92- Faulty) is stored in the radio (address word 56).
The DTC will be sporadic if the ignition has been cycled or a radio reset performed and will automatically be cleared after 40 ignition cycles
without a reoccurrence.
TECHNICAL BACKGROUND
The CD drive temporarily deactivates and the radio stores an internal fault if any of the following occur:
^ The CD is not inserted far enough into the slot to be detected by the mechanical pick-up.
^ The CD hits an obstacle during ejection, preventing proper travel.
^ The CD is pulled out or held while being inserted.
After the ignition is cycled ora radio reset performed, the radio initiates an internal function check. If the function check is successful, the radio
reactivates the CD drive. As a result the DTC entry is changed to sporadic.
PRODUCTION SOLUTION
Not applicable.
SERVICE
1. Do not replace the radio. The CD drive is fully functional after an ignition cycle or radio reset is performed.
2. Erase and ignore the CD drive faulty DTC.
3. Explain the behavior to the customer to prevent a reoccurrence of the complaint.
WARRANTY
This TSB is informational only and not applicable to any Audi warranty.
ADDITIONAL INFORMATION
All parts and service references provided in this TSB are subject to change and/or removal. Always check with your Parts Department and service
manuals for the latest information.
