A2621442058998_2

26 Noises are heard from the exhaust at idle, DTCs P047600, P048C00, P04A000, or P301B00 are stored in
the ECM
26 21 44 2058998/2 February 1, 2021. Supersedes Technical Service Bulletin Group 26 number 20-39 dated
March 24, 2020 for reasons listed below.
Model(s)
Year
VIN Range
Vehicle-Specific Equipment
RS 5, RS 5
Cabriolet,
and RS 5
Sportback
2019, 2021
All
Not Applicable
Condition
REVISION HISTORY
Revision
Date
Purpose
2
-
Revised title (Added DTCs)
Revised header (Updated with applicable 2020/2021 vehicles)
Revised Service (Updated Steps)
Revised Additional Information (Added reference)
1
03/24/2020
Initial publication
Customer states:
 Noises are heard from the exhaust system.
Workshop findings:
 A rattling, twittering or bubbling noises can be attributed to the exhaust flap in the rear silencer – mainly
audible at idle speed and with closed exhaust flap. The noise can be changed or located by touching the
exhaust flap or the exhaust flap mounting.
The following DTCs may be stored in the engine control module (ECM), J623 (address word 0001) related to the
exhaust flap:
 DTC P047600 or DTC P04A000 (exhaust flap 1/2, control difference).
 DTC P048C00 or DTC P301B00 (sender for exhaust flap 1/2, implausible signal).
Technical Background
The play in the exhaust flap mechanism can be affected by age and exposure to the elements. As a result there
can be concerns related to noises from the exhaust system, particularly after a cold start.
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© 2021 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
An optimized rear silencer was developed and put into production. Some vehicles are already fitted with the
optimized rear silencer (factory-fitted, with claw coupling and spring lock), but still have an old control motor (part
number 8S0 133 246 A).
Service
1. For an example of the sound of normal operations, see the video
located at: https://audiexternal.kzoplatform.com/player/medium/1872761570556122175
(Figure 1).
 If the sounds of shifting/working noise of the control motor and the
exhaust flap are similar to the customer’s vehicle then no repairs
need to be made.
 If the noises from the customer’s vehicle sound very different, then
continue following the instructions in this TSB.
Figure 1. QR code for viewing the
supporting video.
2. First check which rear silencer is fitted to the customer’s vehicle, making a distinction as follows:
 A. Old version (Figure 2): C-bracket (marked yellow) and moveable bearing (blue). It is not compatible
with an optimized control motor. The complete rear silencer has to be replaced.
Figure 2. Old rear silencer.
Page 2 of 5
© 2021 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.
 B. Optimized version (Figure 3): claw coupling (marked yellow) with spring lock (blue). Check which
version of the control motor is fitted: If the control motor fitted is not the new version (part number 8S0 133
246 D), replace it individually on the exhaust flap with the concern.
Figure 3. The optimized version of the rear silencer.
 C. Loud creaking noise on versions that were already optimized.
If the optimized version of the rear silencer and control motor is already fitted and there is a concern related
to a loud creaking sound from the exhaust flap (video above for normal operation), you may replace the
affected control motor on the affected side. It is not necessary to replace the entire rear silencer.
3. Record a video of the noise concern and upload it to DOC-IT.
Note:
Warranty claims related to this noise concern can only be invoiced when a sound recording of the noise on
the affected vehicle is uploaded in DOC-IT. We reserve the right to reject any claims that do not include a
recording of the noise.
4. If the customer’s vehicle is has a creaking sound then refer to TSB 2062029: 26 Creaking noises are heard
from exhaust flap at idle speed - V6 2.9TFSI for more information
If the customer’s vehicle has a sound outside of both of these bulletins, then locate the cause of concern and
repair it accordingly outside of these TSBs.
Warranty
Claim Type:
 110 up to 48 Months/50,000 Miles.
 If the vehicle is outside any warranty, this Technical Service Bulletin is informational
only.
Service Number:
2633
Damage Code:
0020
Page 3 of 5
© 2021 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.
Labor Operations:
Remove and install 1 rear muffler or 2 rear mufflers
2633 1900
Or
2633 2000
Remove and install 1 exhaust flap or 2 exhaust flaps
2671 1900
Or
2671 2000
Diagnostic Time:
Claim Comment:
See SRT with
associated
operations
See SRT with
associated
operations
GFF – Checking and clearing fault codes included in
existing labor operations
0150 0000
Time stated
on the
diagnostic
protocol (Max
50 TU)
Road test prior to the service procedure
No allowance
0 TU
Road test after the service procedure
No allowance
0 TU
As per TSB #2058998/2
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
See ETKA
Fasteners, Bolts, Nuts, and Screws as needed per the
Repair Manual
See ETKA/ELSA
See ETKA
Rear Muffler - Right
01
See ETKA
Rear Muffler - Left
01
8S0133246D
Control Motor
01 or 02
Additional Information
The following Technical Service Bulletin(s) will be necessary to complete this procedure:
 TSB 2062029, 26 Creaking noises are heard from exhaust flap at idle speed - V6 2.9TFSI
Page 4 of 5
© 2021 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.
All parts and service references provided in this TSB (2058998) are subject to change and/or removal.
©2021 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
© 2021 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.