A9123862065485_4

Technical Service Bulletin
91 Telephone: interference during phone calls that is synced to the engine's RPM
91 23 86 2065485/4 March 31, 2023. Supersedes Technical Service Bulletin Group 91 number 22-41 dated
November 2, 2022, for reasons listed below.
Model(s)
Year
Q3
2021 – 2023
VIN Range
Vehicle-Specific Equipment
All
OCU3
A3, S3, and RS 3 2022 – 2023
Condition
REVISION HISTORY
Revision
Date
Purpose
4
-
Revised header (updated customer codes)
Revised condition (updated customer statements)
Revised technical background (added note about damage due to service)
Revised service (updated note style)
3
-11/02/2022
Revised service (updated troubleshooting procedure)
2
10/11/2022
Revised header (Add Model Year 2023)
Customer states:
• When making a phone call via Bluetooth, the receiving person is concerned about interference during the
phone call.
The interference is described as a whistling noise that changes notably with the engine’s RPM.
• The Speech Dialog System (SDS) is not working, but hands-free calls are possible.
Workshop findings:
• No relevant DTCs are stored in the vehicle.
• The customer concern can be reproduced.
Technical Background
A hardware issue with the power supply filter in the onboard communications unit (OCU), J949 (address word
0075) may cause the interference to be coupled to the microphone signal.
Page 1 of 3
© 2023 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
The problem can also be caused by certain repair methods. Removing the connector from the OCU
while the 12V battery is connected to the vehicle can result in permanent damage to the OCU.
Production Solution
Not Applicable
Service
1. Disconnect the negative terminal of the vehicle’s 12V battery.
2. Replace the emergency onboard communications unit (OCU) -J949- according to the appropriate repair
instructions in ELSA.
3. Reconnect the negative terminal of the vehicle’s 12V battery.
4. Run the part replacement test plan on -J949- (diag. addr. 0075).
5. Check whether the customer concern has been resolved.
Before applying this TSB, please make sure that the problem is reproducible and that the interference
noise is coupled to the engine RPM. Otherwise, this TSB does not apply and repairs done according to
this TSB may not resolve the customer concern.
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:
9170
Damage Code:
0039
Labor Operations:
Remove and install/replace telematics control
module
9170 19XX
Or
9170 55XX
See SRT with
associated
operations
Page 2 of 3
© 2023 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
Diagnostic Time:
Loosen and secure the negative 12V battery
terminal connection
9785 0999
10 TU
GFF
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 2065485/4
Claim Comment:
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
Onboard Communications Unit
01
Additional Information
All parts and service references provided in this TSB (2065485) are subject to change and/or removal.
©2023 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 3 of 3
© 2023 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.