A9421522065234_1

Technical Service Bulletin
94 Tail lamp warning, various DTCs B16D431, B16D631, B16D531, and/or B16D731 are stored in the
comfort module
94 21 52 2065234/1 December 7, 2021.
Model(s)
Year
VIN Range
Vehicle-Specific Equipment
A4, S4
2020
All
LED rear combination lamp, dynamic turn signal
A4, S4
2021
000001 - 059933
LED rear combination lamp, dynamic turn signal
Condition
Customer states:
 There is a tail lamp warning displayed in the instrument cluster. When actuating the turn signal, the indicator in
the instrument cluster may flash more quickly.
Workshop findings:
 The concern can be sporadic and may not be able to be reproduced in the workshop.
One or more of the following DTCs are stored in the comfort system central control module, J393 (address word
0046):
No Signal:
 DTC B16D431 (Left tail lamp 1, no signal).
 DTC B16D631 (Right tail lamp 1, no signal).
 DTC B16D531 (Left tail lamp 2, no signal).
 DTC B16D731 (Right tail lamp 2, no signal).
Open Circuit:
 DTC B16D413 (Left tail lamp 1, open circuit).
 DTC B16D613 (Right tail lamp 1, open circuit).
 DTC B16D513 (Left tail lamp 2, open circuit).
 DTC B16D713 (Right tail lamp 2, open circuit).
Lamp faulty:
 DTC B16D5F1 (Right rear tail lamp 2 LED faulty).
 DTC B16D5F2 (Left rear tail lamp 2 LED faulty).
 DTC B16D6F1 (Right rear tail lamp 1 LED faulty).
 DTC B16D6F2 (Right rear tail lamp 1 Tail lamp faulty).
 DTC B16D4F4 (left tail lamp 1 Turn signal light defective).
Page 1 of 4
© 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.
Technical Service Bulletin
 DTC B16D5F4 (left tail lamp 2 Turn signal light defective).
 DTC B16D6F4 (Right rear tail lamp 1 Turn signal light defective).
 DTC B16D7F4 (Right rear tail lamp 2 Turn signal light defective).
Technical Background
The diagnostic software is too sensitive.
Production Solution
New software installed in the tail lamps for production.
Service
1. It is possible to have one or more of the above faults stored for the tail lamp(s). Inspect the
harness connection and condition of the faulted tail lamp(s) before proceeding. If there is
any damage to the lamp, pins, connector or wiring, repair the damage first and reevaluate.
2. If there is no damage found, then follow the update instructions below.
SVM Update Instructions
3. Follow all instructions in TSB 2011732: 00 Software Version Management (SVM),
operating instructions.
4. Update the comfort system central control module, J393 (address word 0046) using the
SVM action code as listed in the table below, if necessary:
Tip: This SVM code flashes the tail lamps only. Tail lamps are a sub address of the
convenience electronics, J393 (address word 0046).
Sub Address Old Software
0046
version
New software
version
SVM Code
Input
(tail lamp)
0625
070E
510
710
600
700
510
710
625A004
Page 2 of 4
© 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.
Technical Service Bulletin
070F
0710
600
700
510
710
600
700
510
710
600
700
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:
9431
Damage Code:
0039
Labor Operations:
Software Update (Includes checking for DTCs)
0151 0000
Time stated on
the diagnostic
protocol (Max
100 TU)
Diagnostic Time:
GFF (included above)
No allowance
0 TU
Road test prior to the service procedure
No allowance
0 TU
Road test after the service procedure
No allowance
0 TU
Claim Comment:
As per TSB #2065234/1
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
Tool Number
Tool Description
VAS 6160/VAS 6150
VAS tester with the current version of ODIS
(Windows 10)
Page 3 of 4
© 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.
Technical Service Bulletin
Additional Information
The following Technical Service Bulletin(s) will be necessary to complete this procedure:
 TSB 2011732, 00 Software Version Management (SVM), operating instructions.
All part and service references provided in this TSB (2065234) are subject to change and/or removal. Always
check with your Parts Department and/or ETKA for the latest information and parts bulletins. Please check the
Repair Manual for fasteners, bolts, nuts, and screws that require replacement during the repair.
©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 4 of 4
© 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.