A9023952069055_3

Technical Service Bulletin
90 Head-up display does not work and/or 12V vehicle battery may be drained DTC U131C00
90 23 95 2069055/3 January 27, 2023. Supersedes Technical Service Bulletin Group 90 number 23-91 dated
January 9, 2023, for reasons listed below.
Model(s)
Year
Q7, and SQ7
2020 – 2022
A8 e quattro
2021
VIN Range
Vehicle-Specific Equipment
All
Head-Up Display
A6, A6 allroad,
S6, RS 6, A7, A7
e quattro, S7, RS
7, A8, S8, e-tron
2021 - 2022
Sportback
quattro, e-tron
quattro, Q8,
SQ8, and RSQ
Q8
Condition
REVISION HISTORY
Revision
Date
Purpose
3
-
Revised header (added A8)
2
01/09/2023
Revised header (updated model year list)
1
12/22/2022
Initial publication
Customer states:
The head-up display cannot be turned on. The message “The selected system is currently unavailable” is
displayed periodically on the MMI display.
The 12V vehicle battery may be drained.
Workshop findings:
The following DTC may be stored in the Information Electronics control module -J794- (address word 005F) with a
high-frequency count.
• DTC U131C00: Head-up display control module on fiber optic MOST data bus no communication.
Furthermore, the test program “0019 – Read data bus sleep inhibitor” indicates that the head-up display is the
cause of the vehicle’s data bus system not entering sleep mode.
Technical Background
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
A software related issue may cause the head-up display to freeze and keep the vehicle’s data-bus system awake.
Production Solution
New software in MY23.
Service
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. Reset the head-up display for approximately 5 minutes by removing the fuse
For Audi Q7, Q8 and e-tron, it is fuse SF4
For Audi A6 and A7, it is fuse SG4
2. Follow all instructions in TSB 2011732: 00 Software Version Management (SVM), operating instructions.
3. Update the head-up display control module –J898- (address word 0082) using the SVM action code as listed
in the table below, if necessary:
Model
Old Software Old
New Software New Software SVM Code
Input
Part Number Software Part Number Version
Version
(or higher)
(or higher)
A6/A7/A8/Q7/Q8/e6117
82A004
tron
Update the head-up display (address word 0082) to software version 6117 with SVM code 82A004.
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.
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
Service Number:
9091
Damage Code:
0039
Labor Operations:
Software Update (Includes checking for
DTCs)
0151 0000
Time stated on
the diagnostic
protocol (Max
100 TU)
9091 4199
20 TU
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
Repair control unit for head-up display
Diagnostic Time:
As per TSB 2069055/2
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.
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 (2069055) 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
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.