Technical Service Bulletin
91 No diagnostics communication to the telematics control module; DTC U142100
91 23 49 2056076/20 November 17, 2023. Supersedes Technical Service Bulletin Group 91 number 23-19 dated
August 8, 2023 for reasons listed below.
Model(s)

Year

All Audi Vehicles 2019 – 2020

VIN Range

Vehicle-Specific Equipment

Not Applicable

ConBox Low

Condition
REVISION HISTORY
Revision

Date

Purpose

20

-

Revised Condition (added note about red/off eCall LED)
Revised Service (simplified reset procedure)
Revised Warranty (updated warranty table)

19

08/08/2023

Revised Condition (added note about test plans)

18

06/29/2023

Revised header (added DTC codes)

Customer states:
• An SOS Warning might be displayed in the
instrument cluster (Figure 1).

Figure 1. Emergency call malfunction warning.
Or
• Connectivity features like remote locking and unlocking are not working.
Or
• No diagnostics communication can be established to the control module for the emergency call module and
communication unit (telematics control module or ConBox), -J949- (address word 0075) during vehicle
diagnostics.
• And/Or
• The eCall LED in the roof module is red or off
Workshop findings:

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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
• Criterion 1:
No diagnostics communication can be established with the control module for the emergency call module
and communication unit (telematics control module or ConBox), -J949- (address word 0075) via ODIS.
• Criterion 2:
The following DTC may be entered in Databus Control Module -J533- (address word 0019) but the ConBox
(address word 0075) can be addressed via ODIS:
• DTC U142100: Control module for emergency call module and communication unit no communication

This TSB only applies to vehicles that have no diagnostics communication to the telematics control
module, -J949- (address word 0075). If DTC U153E00 is entered in the telematics control module, -J949(address word 0075), please reference TSB 2055945: 91 SOS Emergency call function deactivated
message in the cluster, DTC U153E00 stored in the telematics module.

The complaints in this TSB cannot be resolved by running test plans for the DTCs mentioned
above. Any time for test plans run that are outside of the scope of this TSB may be denied.

Technical Background
A software bug can cause the control module to freeze during a cold start.

Production Solution
Not applicable.

Service
Criterion 1:
(Not required if the ConBox (address word 0075) is addressable via ODIS):
1. Perform a power reset (terminal 30 reset) of the ConBox by pulling its fuse and reinstalling it after a
couple minutes. Please check the repair manual regarding the fuse locations.
2. If ODIS still cannot connect to the telematics control module, -J949- (address word 0075), then follow
the ODIS test plan and replace the telematics control module with part number 992 035 286 C.
If ODIS can connect to the telematics control module, -J949- (address word 0075) after this
procedure, continue with Criterion 2.
Criterion 2:
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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
SVM Update Instructions

Always use DoIP when flashing a control module via ODIS in supported vehicles.
To Activate DoIP, select Administration>>General>>GFF Process>>DoIP communication>>Only allow
DoIP communication
This setting will automatically reset when the diagnostic session is ended.
You can tell if DoIP is active by observing a red LED on the VAS 6154(A)
1. Follow all instructions in TSB 2011732: 00 Software Version Management (SVM), operating instructions.
2. Update the telematics control module, -J949- (address word 0075) using the SVM action code as listed in the
table below, if necessary:
Model

Old Software
Part Number

A4/A5/A6/A7/A8/Q5/Q7/Q8/etron quattro

4K1035283C

Old
Software
Version

0233

New Software
Part Number
(or higher)

New
Software
Version

SVM
Code
Input

(or higher)

4K1035283K

0420

75A027

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:

9145

Damage Code:

0039

Criterion 1 only (if required) :
Labor Operations:

Repair control unit for emergency call
(terminal 30 reset)

9170 4199

10 TU

Diagnostic Time:

GFF

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

Criterion 2 only:
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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
Labor Operations:

Software Update

0151 0000

Time stated on
the diagnostic
protocol
(Max 100 TU)

Diagnostic Time:

GFF

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 2056076/20

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
The part numbers mentioned in this TSB are different from the ones listed in ETKA. Only use
parts listed in this TSB, this includes superseding part numbers!
Part Number

Part Description

Quantity

See ETKA

Fasteners, Bolts, Nuts, and Screws as needed per the Repair
Manual

See ETKA/ELSA

992035286C

Telematics Control Module (if required under Criterion 1)

01

Additional Information
The following Technical Service Bulletin(s) may be necessary to complete this procedure:
• TSB 2055945, 91 SOS Emergency call function deactivated message in the cluster, DTC U153E00 stored in
the telematics module.
• TSB 2011732: 00 Software Version Management (SVM), operating instructions.
• Owner’s Manual: Fuses.
• Elsa: Wiring Diagrams >> Component Locations >> Fuses.
All part and service references provided in this TSB (2056076) 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.
©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
© 2023 Audi of America, Inc.
Internal

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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
these materials be modified or reposted to other sites without the prior expressed written permission of the
publisher.

© 2023 Audi of America, Inc.
Internal

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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.