A911950 20423742

91 Droning noise from engine compartment from about 3500 rpm
91 19 50 2042374/2 March 26, 2019. Supersedes Technical Service Bulletin Group 91 number 15-23 dated
November 6, 2015 for reasons listed below.
Model(s)
Year
VIN Range
Vehicle-Specific Equipment
S3, TTS
2015 - 2016
All
Not Applicable
Condition
REVISION HISTORY
Revision
Date
Purpose
2
-
Revised title
Revised header data (Added TTS)
Revised Warranty (Added Claim Types)
1
11/06/2015
Initial publication
Customer states:
 There is an engine droning noise or rattle noise when the engine speed is approximately 3,500 to 4,000 rpm
(vehicle speed does not affect the noise; the vehicle can be stationary).
 The source of the noise seems to be from somewhere near the windshield or inside the dash panel area.
 The noise is more noticeable when Audi drive select is set to dynamic mode.
 The customer has an S3 or a TTS.
Workshop findings:
 No DTCs are stored.
Page 1 of 6
© 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 Background
In S3 and TTS vehicles, there is an electronic sound
amplification system (actuator for impact sound) that changes
depending on the selected Audi drive select mode. The
harness for the sound actuator can make contact with the
vehicle body structure and the noise can be amplified by the
sound actuator. This noise is only noticeable at higher speeds
due to the calibration of the sound actuator system.
The video located at
https://audi-external.kzoplatform.com:443/swf/player/316
(Figure 1) shows how the interference causes vibration.
Figure 1. The QR code for viewing the video
with a QR code reader on phones and tablets.
Alternatively, the video can be accessed
through computer internet browsers at the link
provided in this bulletin.
Production Solution
The harness for the sound actuator is covered with insulation tape.
Page 2 of 6
© 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.
Service
1. Verify the concern by checking for the sound
with the engine speed between 3,500 and
4,000 rpm, only after the engine has reached
operating temperature. This can be done
while the vehicle is stationary.
 First, check for the sound with Audi drive
select in comfort mode (MMI >> Menu >>
Car >> Audi drive select >> comfort or
select using the dash panel button)
(Figure 2).
 Next, verify that the sound is more
noticeable with Audi drive select in
dynamic mode (MMI >> Menu >> Car >>
Audi drive select >> dynamic or select
using the dash panel button).
If the sound became more noticeable with
Audi drive select in dynamic mode, then the
source is the harness contacting the body
structure. Proceed to the next step.
Figure 2. Audi drive select mode selection.
Page 3 of 6
© 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.
2. Loosen the connector on sound actuator
R214 (Figure 3) according to the Elsa Repair
Manual.
Figure 3. Sound actuator R214 in the plenum chamber.
3. Wrap fleece tape (part number D 373125A2)
from approximately 2 cm away from the
connector housing to the exit of the main
wiring harness (Figure 4).
The new tape can be placed over the existing
insulation. The added bulk will dampen
vibrations.
Figure 4. The direction in which to start wrapping the tape
(arrow).
4. Check for the sound again to verify that the concern is resolved.
Page 4 of 6
© 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.
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:
9713
Damage Code:
0018
Labor Operations:
Cover (plenum) remove + reinstall
8522 1900
See SRT
Modify sound actuator
2793 1999
20 TU
GFF
No allowance
0 TU
Road test prior to service procedure
0121 0002
10 TU
Road test after service procedure
0121 0004
10 TU
Diagnostic Time:
Claim Comment:
As per TSB #2042374/2
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
D 373125A2
Fleece Adhesive Tape
As needed
(not claimed under warranty)
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 (2042374) are subject to change and/or removal.
©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
Page 5 of 6
© 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.
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 6 of 6
© 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.