A9120812052251_4

91 Bang & Olufsen: Audio distorted from all input sources
91 20 81 2052251/4 June 25, 2020. Supersedes Technical Service Bulletin Group 91 number 19-78 dated August
14, 2019 for reasons listed below.
Model(s)
Year
VIN Range
Vehicle-Specific Equipment
A4, A4
allroad, and
S4
2017 - 2019
All
Bang & Olufsen
A5, A5
Cabriolet,
A5
Sportback,
S5, S5
Sportback,
RS5, and
RS5
Sportback
2018 - 2019
All
Bang & Olufsen
Condition
REVISION HISTORY
Revision
Date
Purpose
4
-
Revised Service (Added instructions for door woofer and subwoofer
replacement)
Revised Additional Information (Added TSB reference)
3
08/14/2019
Revised header (Added MY2019)
2
11/29/2018
Revised Warranty (Updated Service Number)
Customer states:
 The audio sounds distorted from the door speakers or the subwoofer.
 The vehicle is equipped with the Bang and Olufsen sound system.
Technical Background
Software parameter allows the speaker to be overpowered, resulting in distortion.
Page 1 of 5
© 2020 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.
Production Solution
New software in the sound system control module, J525 (address word 0047) addressed the condition.
Service
1. If the concern is not due to outside influence, continue to Section 1. Outside influence is outlined in TSB
2018187: 91 Sound system: speaker rattles, vibrations or audio interference.
Section 1: SVM Update Instructions
2. Follow all instructions in TSB 2011732: 00 Software Version Management (SVM), operating instructions.
3. Update the sound system control module, J525 (address word 0047) using the SVM action code as listed in
the table below, if necessary:
Model
Old ZDC Number
New ZDC Number
SVM Code Input
8W0909510A
8W0909510VF
8W0909510B
8W0909510C
8W0909510D
8W0909510F
8W0909510E
A4, A5, A5
Sportback, and A5
Cabriolet
8W0909510F
47A006
8W2909510A
8W2909510VC
8W2909510B
8W2909510B
8W2909510C
8W5909510A
8W5909510B
8W5909510D
8W5909510C
3. Following SVM update, recheck system. If concern is still present after SVM update:
 If concern is related to the subwoofer, continue to Section 2.
Page 2 of 5
© 2020 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.
 If concern is related to the front door speakers, continue to Section 3.
 If concern is identified as another source, continue outside of this TSB.
Section 2: Subwoofer
If the source of the distortion is identified as a subwoofer with part number 8W9.035.382.C:
4. Replace the subwoofer
5. Continue to Section 3.
Section 3: Front door woofers (left and right)
4.
If the source of distortion is identified as a woofer with part number 8W5.035.297 replace both the driver
and passenger door woofers.
Tip: Due to the differences between the updated woofer and the original woofer it is not permissible to
have unmatched woofer between doors. Therefore, replace the affected woofer in both the left and right
front doors.
Warranty
Claim Type:
 110 up to 48 Months/50,000 Miles.
 G10 for CPO Covered Vehicles – Verify Owner.
 If the vehicle is outside any warranty, this Technical Service Bulletin is informational
only.
Service Number:
Based On Customer Statement:
Rear Speaker
9142
When Claimed With Section 02:
Front Speaker
9140
When Claimed With Section 03:
Subwoofer
Damage Code:
0040
Labor Operations:
Section 01:
9136
Page 3 of 5
© 2020 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.
Software Update
0151 0000
Time stated
on the
diagnostic
protocol (Max
50 TU)
9136 19xx
See SRT with
associated
operations
Remove and install 2 door trims
7059 2000
See SRT with
associated
operations
Remove and install front 2 speakers
9140 2050
See SRT with
associated
operations
GFF
No allowance
0 TU
Road test prior to service procedure
No allowance
0 TU
Road test after service procedure
No allowance
0 TU
Section 02:
Sub-woofer remove + reinstall
Section 03:
Diagnostic Time:
Claim Comment:
As per TSB #2052251/4
All warranty claims submitted for payment must be in accordance with the Audi Warranty Policies and Procedures
Manual. Claims are subject to review or audit by Audi Warranty.
Required Parts and Tools
Always check with your Parts Department and/or ETKA for the latest information and parts bulletins.
Part Number
Part Description
Quantity
See ETKA
Fasteners, Bolts, Nuts, and Screws
as needed per the Repair Manual
See ETKA/ELSA
8W5035297A
Woofers (Front door, left and right)
02
8W9035382C
Subwoofer
01
Page 4 of 5
© 2020 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.
Additional Information
The following Technical Service Bulletin will be necessary to complete this procedure:
 TSB 2018187, 91 Sound system: speaker rattles, vibrations or audio interference.
 TSB 2011732, 00 Software Version Management (SVM), operating instructions.
All part and service references provided in this TSB (2052251) are subject to change and/or removal. Always
check with your Parts Department and/or ETKA for the latest information and parts bulletins. Please check the
Repair Manual for fasteners, bolts, nuts, and screws that require replacement during the repair.
©2019 Audi of America, Inc. All rights reserved. The 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 5 of 5
© 2020 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.