Technical Service Bulletin
91 No diagnostics communication to the telematics control module (ConBox); DTC U142100
91 23 15 2070942/1 July 19, 2023.
Model(s)

Year

VIN Range

Vehicle-Specific Equipment

A4, A4 allroad,
S4, A5, A5
Cabriolet, A5
Sportback, S5,
S5 Cabriolet, S5
Sportback, RS 5,
RS 5 Sportback,
A6, A7, A8, Q5,
SQ5, Q7, and Q8

2019

All

Not Applicable

Condition
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.
Workshop findings:
The following DTC may be entered in the Databus Control module -J533- (address word 0019):
• DTC U142100: Control module for emergency call module and communication unit no communication.
Criterion 1:

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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
The control module for the emergency call mosule and communication unit (ConBox) -J949- (address word 0075)
can be accessed via ODIS.
Criterion 2:
No diagnostics communication can be established with the control module for the emergency call module and
communication unit (ConBox). -J949- (address word 0075) via ODIS.

Technical Background
There is no communication with emergency call module control unit and communication unit -J949- (address word
0075) or communication is disrupted.
This is indicated by a DTC (U142100) in the gateway -J533- (address word 0019).
As soon as communication can be re-established, this event memory is entered as sporadic.

Production Solution
Implementation of the ConBox High system starting in MY20/21.

Service
Criterion 1:
• Please clear the DTCs
• Do not replace any parts. Any claims for replaced parts for this criterion may be denied.
•
• Criterion 2:
1. Remove and unplug the control module for the emergency call module and communication unit, J949
(address word 0075) according to the Elsa Repair Manual.

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© 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
2. Open the battery compartment of the control
module for the emergency call module and
communication unit, J949 (address word
0075), and disconnect the backup battery
(Figures 2 - 3).

Figure 2. Backup battery compartment location.

Figure 3. Backup battery connector (no release
mechanism).
5. Wait approximately one minute, then reinstall the backup battery back into the control module for the
emergency call module and communication unit, -J949- (address word 0075).
6. Reinstall the control module for the emergency call module and communication unit, -J949- (address word
0075) back into the vehicle.
7. If ODIS still cannot connect to the control module for the emergency call module and communication unit, J949- (address word 0075), then follow the ODIS test plan and replace the control module for the emergency
call module and communication unit with the part specified in ETKA.
Please upload a new GFF log to paperless showing that the ConBox still doesn’t communicate with
ODIS after the power cycle procedure listed above.

Page 3 of 5
© 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
If ODIS can connect to the control module for the emergency call module and communication unit, -J949(address word 0075) after this procedure, clear the DTCs and release the vehicle. Any claims for replaced
parts may be denied in this case.

Warranty
Claim Type:

• 110 Up to 48 Months/50,000 Miles.
• G10 for CPO Covered Vehicles – Verify Owner.
• If the vehicle is outside of any warranty, this Technical Service Bulletin is
informational only.

Service Number:

9145

Damage Code:

0039

Labor Operations:

Remove and install/replace telematics control
unit

9170 19xx /

Remove and install emergency battery for
telematics

9178 1999

See SRT with
associated
operations

GFF

0150 0000

Time stated on
the diagnostic
protocol (Max 100
TU)

Road test prior to the service procedure

No allowance

0 TU

Road test after the service procedure

No allowance

0 TU

Diagnostic Time:

9170 55xx

See SRT with
associated
operations

Claim Comment:
As per TSB 2070942/1
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
Always check with your Parts Department and/or ETKA for the latest information and parts bulletins.
Part Number

Part Description

Quantity

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© 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
See ETKA

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

See ETKA/ELSA

See ETKA

Control module for the emergency call module and
communication unit (ConBox), J949 [if required per
Criterion 2, step 7)

01

Additional Information
All parts and service references provided in this TSB (2070942) 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 5 of 5
© 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.