A4521172061906_2

45 Parking brake warning in instrument cluster while starting vehicle, DTC U103100 is stored in the ABS
control module
45 21 17 2061906/2 June 25, 2021. Supersedes Technical Service Bulletin Group 45 number 21-14 dated
January 15, 2021 for reasons listed below.
Model(s)
Year
VIN Range
Vehicle-Specific Equipment
Audi e-tron
quattro,
Audi e-tron
Sportback
2020 - 2022
All
Not Applicable
Condition
REVISION HISTORY
Revision
Date
Purpose
2
-
Revised header (Added Model Year)
1
01/15/2021
Initial publication
Customer states:
 When starting the vehicle, the warning lamp for the electronic parking brake appears briefly together with the
text “Parking brake fault”.
Workshop findings:
The following DTC may be stored sporadically in the ABS control module, J104 (address word 0003):
 DTC U103100 (FlexRay data bus, no synchronization).
Technical Background
The software needs to be updated in the ABS control module.
Production Solution
An updated software was put into production.
Page 1 of 3
© 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.
Service
SVM Update Instructions
1. Follow all instructions in TSB 2011732: 00 Software Version Management (SVM), operating instructions.
2. Update the ABS control module, J104 (address word 0003), and suspension control module, J775 (address
word 0074) using the SVM action code as listed in the table below, if necessary:
Model
Audi e-tron
quattro, Audi
e-tron
Sportback
Control
Module
Old Software
Part Number
Old
Software
Version
New Software
Part Number
New Software
Version
(or higher)
(or higher)
ABS
4KE909059AD
0231
4KE909059AF
0242
Suspension
4KE907777AM
<2320
4KE907777AH
2320
SVM Code
Input
74A006
3. Proceed with basic settings for the electromechanical parking brake and the tire pressure monitoring system
afterward.
Note:
If after the software update the DTC remains in the ABS control module, J104 (address word 0003), then proceed
as follows:
1. Lock the vehicle.
2. Wait until sleep bus mode is activated.
3. Read the ABS memory log and delete any remaining DTCs in the ABS control module, J104 (address word
0003).
4. Reevaluate the vehicle.
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:
4545
Page 2 of 3
© 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.
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
No allowance
0 TU
Road test prior to the service procedure
0121 0002
10 TU
Road test after the service procedure
0121 0004
10 TU
Claim Comment:
As per TSB #2061906/2
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 (2061906) 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 3 of 3
© 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.