A5721762055916_3

57 Message in instrument cluster: "Child lock: malfunction!" DTC B14FF29 is stored in the rear door
control modules
57 21 76 2055916/3 April 29, 2021. Supersedes Technical Service Bulletin Group 57 number 20-67 dated
February 20, 2020 for reasons listed below.
Model(s)
Year
VIN Range
Vehicle-Specific Equipment
A4, A4
allroad, S4,
A5, A5
Cabriolet,
A5
Sportback,
S5, S5
Cabriolet,
S5
Sportback,
Q7, and
SQ7
2018 – 2019
All
Not Applicable
RS 5, RS 5
Cabriolet,
and RS 5
Sportback
2019
All
Not Applicable
Condition
REVISION HISTORY
Revision
Date
Purpose
3
-
Revised header (Removed model years)
Revised Warranty (Added Labor Operation)
2
02/20/2020
Revised title
Revised Service (Added note)
1
08/29/2019
Initial publication
Customer states:
 The message "Child lock: malfunction!" appears in the instrument cluster.
Workshop findings:
The following DTC may be stored in one or both rear door control modules, J388 and J389 (address 00BB or
00BC):
 DTC B14FF29 (motor for child lock - implausible signal) static only.
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 Background
The software needs to be updated.
Production Solution
New software in the rear door control modules, J388 and J389 (address 00BB or 00BC) addressed the condition.
Service
1.
Update of the rear door electronics control module can only be performed if no DTC is present in the
respective control module. To remove a static DTC from the door control module prior to SVM update:
A. Gain access to the vehicle battery.
B. Remove the diagnostic tester from the OBD port on the vehicle.
C. Turn off the ignition and remove the key from the vehicle.
D. Wait 5 minutes for the vehicle to go to sleep (bus silence).
E. Disconnect the 12V battery, performing a 30 power reset.
F. Wait 10 minutes.
G. Utilizing Guided Functions or OBD Functions, clear the fault memory of the door control module with the
static DTC.
Note:
Do not read out the fault memory, or the process will need to be repeated.
SVM Update Instructions
2.
Follow all instructions in TSB 2011732: 00 Software Version Management (SVM), operating instructions.
Note:
Immediately before performing the SVM code completely open and close all window lifters one time. This
ensures that all door control modules are awake for the update.
3.
Update the door electronics control module, J386, J387, J388, and J389 (0042 – drivers, 0052 passenger,
00BB rear driver’s side, and 00BC rear passenger side) using the SVM action code as listed in the table
below, if necessary:
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.
Software
Original
Hardware
Original
4M0959595H
4M0959595F
4M0959795H
4M0959795F
4M0959595H
4M0959595F
4M0959795H
4M0959795F
Model Address
00BB
ZDC
ZDC Version
SVM
Code
*
42A014
4M0909897J
Q7
00BC
4M0909896J
Hardware
Original
Model Address Software Original
4M0959795H
4M0959795F
8W0959595H
8W0959595F
4M0959795H
4M0959795F
8W0959595H
8W0959595F
00BB
ZDC
ZDC
Version
SVM
Code
*
42A014
8W2909897D
A5
00BC
8W2909896D
Software Original
Hardware
Original
4M0959795H
4M0959795F
A4 Sedan
8W0959595H
8W0959595F
A4 Avant
4M0959795H
4M0959795F
8W0959595H
8W0959595F
Model
Address
00BB
ZDC
ZDC Version
SVM
Code
*
42A014
8W0909897G
00BC
8W0909896G
4. Perform basic settings for all four windows.
Note:
In the event that the fault will not clear after performing SVM, cycle the child locks from the driver’s door controls.
Warranty
Claim Type:
 110 up to 48 Months/50,000 Miles.
 G10 for CPO Covered Vehicles – Verify Owner.
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.
 If the vehicle is outside any warranty, this Technical Service Bulletin is informational
only.
Service Number:
6438
Damage Code:
0039
Labor Operations:
Software Update
0151 0000
Time stated on
the diagnostic
protocol (Max
100 TU)
Check and adjust door control modules
6438 0699
10 TU
Connect and disconnect battery
2706 2799
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
Diagnostic Time:
Claim Comment:
As per TSB #2055916/3
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 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 (2055916) 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.