A911733 2021780-

91 Generation 3 CAN radio: CD drive malfunction
91 17 33 2021780/6 July 14, 2017. Supersedes Technical Service Bulletin Group 91 number 15-05 dated July 22,
2015 for reasons listed below.
Model(s)
Year
VIN Range
Vehicle-Specific Equipment
A4
2009 - 2016
All
Gen III CAN radio without navigation
A5
2008 - 2017
All
Gen III CAN radio without navigation
A5 Cabriolet
2010 - 2017
All
Gen III CAN radio without navigation
Q5
2009 - 2017
All
Gen III CAN radio without navigation
Condition
REVISION HISTORY
Revision
Date
Purpose
6
-
Revised header data (Added model years)
5
07/22/2015
Revised header data (Added model years)
4
07/02/2013
Revised header data (Added model years and DTC information)
Revised Condition (Added PR information)
 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.”
(Figure 1)
Figure 1. The “Drive defective” error message.
Page 1 of 3
© 2017 Audi of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and other intellectual property rights of Audi of
America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted
in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.
 “The CD-drive is damaged and was
therefore deactivated.” (Figure 2)
Figure 2. The “damaged CD drive” error message.
 The CD drive cannot be selected in the
Source list and is described as “damaged.”
(Figure 3)
Figure 3. CD drive is not available in the Source
selection screen.
 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, R (address word 0056).
The DTC will be sporadic if the ignition has been cycled or a radio reset was performed, and will automatically be
cleared after 40 ignition cycles without a reoccurrence.
 Only vehicles with the CAN-based generation 3 radio (Concert (PR 8UQ) or Symphony (PR 8YN)) are
affected.
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.
Page 2 of 3
© 2017 Audi of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and other intellectual property rights of Audi of
America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted
in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.
After the ignition is cycled or a 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 concern.
Warranty
This TSB is informational only and not applicable to any Audi Warranty.
Additional Information
All parts and service references provided in this TSB (2021780) are subject to change and/or removal. Always
check with your Parts Department and service manuals for the latest information.
©2017 Audi of America, Inc. All rights reserved. Information contained in this document is based on the latest
information available at the time of printing and is subject to the copyright and other intellectual property rights of
Audi of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any
time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in
any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, nor may these
materials be modified or reposted to other sites without the prior expressed written permission of the publisher.
Page 3 of 3
© 2017 Audi of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and other intellectual property rights of Audi of
America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted
in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.