91 Bang & Olufsen: Scraping noises from the woofer door speaker with bass-heavy songs
91 20 85 2046489/4 July 13, 2020. Supersedes Technical Service Bulletin Group 91 number 18-90 dated April
23, 2018 for reasons listed below.
Model(s)

Year

VIN Range

Vehicle-Specific Equipment

TT, TTRS

2015 - 2019

All

With Bang & Olufsen

TT, TTRS

2020

000000 - 900501
Or

With Bang & Olufsen

000000 - 003335

Condition
REVISION HISTORY
Revision

Date

Purpose

4

-

Revised header (Added MY19, MY20, and VIN breaks)
Revised Technical Background (Updated information)
Revised Production Solution (Updated improvement date)
Revised Service (Updated repair instructions)
Revised Warranty (Updated Labor Operations)
Revised Additional Information (Added TSB reference)

3

04/23/2018

Revised title
Revised Warranty (Updated Labor Operations)

2

11/16/2017

Revised header (Added model years and VIN breaks)
Revised Technical Background (Updated information)
Revised Production Solution (Updated improvement date)
Revised Service (Updated repair instructions)
Revised Warranty (Updated Labor Operations)

Customer states:
 Poor audio reproduction or speakers sound blown.
Workshop findings:
 Unwanted scraping type noises are coming from the woofer speakers located in the doors.

Page 1 of 4
© 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.

Technical Background
The woofer speaker can have a hardware restriction which causes a noise similar to a blown speaker.
Additionally, a software improvement is available for the sound amplifier for this condition.

Production Solution
Improved woofer speaker in the driver and passenger door and new Target Data Container (ZDC) update in the
sound system control module, J525 (address word 0047) addressed the condition.

Service
1. Follow TSB 2018187: 91 Sound system: speaker rattles, vibrations or audio interference and ensure there
are no outside influences that can be removed to fix the concern. If the concern is due to outside influence,
this TSB does not apply.
Section 1: SVM Update Instructions
2. Follow all instructions in TSB 2011732: 00 Software Version Management (SVM), operating instructions.
3. Update sound system control module, J525 (address word 0047) using the SVM action code as listed in the
table below, if necessary:

Model

TT

Old Target
Data
Container
Number
8S0909510C

Old Target
Data
Container
Version

New Target
New Target
SVM Code
Data Container Data Container Input
Number
Version
(or higher)

*

8S0909510C

(or higher)
0013

47A005

4. If the noise persists after performing the SVM Update in Section 1, and the root cause is identified as the
woofer speaker in either the drivers or passenger then continue to Section 2. Otherwise, continue repairs
outside of this TSB.
Section 2: Noise persists after SVM Update
5. Inspect the woofer speaker of both the driver and passenger doors.
6. If part number 8S0 035 298 or 8S0 035 297 is found, replace both woofers with part numbers 8S0 035 297 A
and 8S0 035 298 A.

Page 2 of 4
© 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.

Tip: A mixed installation between updated speakers is not allowed and will cause damage to the
system.

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:

9140

Damage Code:

0040

Labor Operations:

Section 1
Software Update (Includes checking for DTCs)

0151 0000

Time stated
on the
diagnostic
protocol (Max
100 TU)

Remove and install 2 front speakers

9140 2052

See SRT

Check 2 front speakers

9140 0299

10 TU

GFF

0150 0000

0 TU

Road test prior to service procedure

No allowance

0 TU

Road test after service procedure

No allowance

0 TU

Section 2

Diagnostic Time:

Claim Comment:

As per TSB #2046489/4

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.

Page 3 of 4
© 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.

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

8S0035297A

Woofer Drivers Door

As Needed

8S0035298A

Woofer Passenger Door

As Needed

Additional Information
The following Technical Service Bulletin(s) 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 (2046489) are subject to change and/or removal.
©2020 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 4 of 4
© 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.