A911938 2051051-

Technical Service Bulletin
91 Poor sound reproduction from front bass speakers
91 19 38 2051051/2 February 13, 2019. Supersedes Technical Service Bulletin Group 91 number 18-91 dated
April 23, 2018 for reasons listed below.
Model(s)
Year
VIN Range
Vehicle-Specific Equipment
A4, A5
2017 - 2018
All
Not Applicable
Condition
REVISION HISTORY
Revision
Date
Purpose
2
-
Revised Warranty (Updated Labor Operations)
1
04/23/2018
Initial publication
Customer states:
 Poor sound reproduction from the speakers in the front doors.
Workshop findings:
 Poor sound reproduction on all audio sources.
 Poor sound continues to emanate from the speaker when the speaker is isolated from the door frame.
 Water spots are found on the speaker cone.
 The speaker has part number 8W0035415.
Page 1 of 4
© 2019 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 Service Bulletin
Technical Background
Water coming into contact with the speaker
cone causes a deformation of the cone.
This deformation allows the voice coil to
come into contact with the magnet of the
speaker, resulting in unwanted noises
(Figure 1).
Figure 1. Deformation of the speaker cone.
There is water damage to the label. Traces
of water are found on the magnet, basket,
cone, and surround of the speaker (Figure
2).
Figure 2. Signs of water on the speaker.
Page 2 of 4
© 2019 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 Service Bulletin
Production Solution
Improved parts implemented into production.
Service
1. Confirm that the unwanted sound is not caused by loose trim, covers, or other objects (such as keys, change,
pens, sunglasses, and etc.) in the vehicle. If the source of the unwanted sound is not coming from the
woofer, located in the front door, this TSB does not apply.
Note:
This TSB applies only if the damaged speaker is labeled with part number 8W0035415.
2. Replace both front door speaker woofers with part number 8W0035415A.
Note:
Both front door speakers must have the same part number. A mixed part number installation is not allowed.
Warranty
Claim Type:
 110 up to 48 Months/50,000 Miles.
 G10 for CPO Covered Vehicles – Verify Owner.
 If vehicle is outside any warranty, this Technical Service Bulletin is informational
only.
Service Number:
9140
Damage Code:
0020
Labor Operations:
Replace One Speaker:
Remove and install front speaker
9140 1950
See SRT
Front door trim panel removed + reinstalled
7059 1900
See SRT
Remove and install 2 front speakers
9140 2050
See SRT
2 Front door trim panels removed + reinstalled
7059 2000
See SRT
GFF
No allowance
0 TU
Replace Two Speakers:
Diagnostic Time:
Page 3 of 4
© 2019 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 Service Bulletin
Claim Comment:
Road test prior to service procedure
No allowance
0 TU
Road test after service procedure
No allowance
0 TU
As per TSB #2051051/2
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
8W0035415A
Speaker
Up to 2
See ETKA
Fasteners, Bolts, Nuts and Screws as needed per the
Repair Manual
See ETKA/ELSA
Additional Information
All parts and service references provided in this TSB (2051051) are subject to change and/or removal.
©2019 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 4 of 4
© 2019 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.