57 Front or rear door lock is not locking, w/o function and/or fault messages in DIS, DTC(s) B122D29,
B14FF29 or B122B13
c 2063236/1 July 30, 2021.
Model(s)

Year

VIN Range

Vehicle-Specific Equipment

A6, A7, A8,
S8, and Q8

2019 - 2022

All

Not Applicable

A6 allroad,
S6, RS 6,
S7, RS 7,
A8 PHEV,
SQ8, RS
Q8, Audi etron quattro,
and Audi etron
Sportback

2020 - 2022

All

Not Applicable

A6 Avant,
RS 6 Avant,
and A7
PHEV

2021 - 2022

All

Not Applicable

Condition
Customer states:
 Front and/or rear doors cannot be opened from the outside or the inside.
 Fault messages for the front and/or rear doors in driver information system (DIS) (e.g. for exit warning, central
locking, child safety lock).
 The doors are locked but one of the doors can be opened without a key.
Workshop findings:
One or more of the following DTC(s) may be stored in the driver’s door control module, J386 (address word
0042), passenger’s door control module, J387 (address word 0052), rear driver side door control module, J926
(address word 00BB) or rear passenger side door control module, J927 (address word 00BC):
Driver’s door control module, J386 (address word 0042):
 DTC B122D29 (Lock unit for central locking Implausible signal).
 DTC B122B13 (Central locking motors Open circuit).
Passenger’s door control module, J387 (address word 0052):
 DTC B122D29 (Lock unit for central locking Implausible signal).
 DTC B122B13 (Central locking motors Open circuit).
Rear driver side door control module, J926 (address word 00BB):

Page 1 of 8
© 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.

 DTC B122D29 (Lock unit for central locking Implausible signal).
 DTC B14FF29 (Child safety lock motor Implausible signal).
 DTC B122B13 (Central locking motors Open circuit).
Rear passenger side door control module, J927 (address word 00BC):
 DTC B122D29 (Lock unit for central locking Implausible signal).
 DTC B14FF29 (Child safety lock motor Implausible signal).
 DTC B122B13 (Central locking motors Open circuit).

Technical Background
The Audi A8 (D5) is equipped with fully electric door locks (aka “e-lock”). The micro switches are located at the
inner and outer door handles. The Audi A6/A7 (C8), Q8, and Audi e-tron models are equipped with semi-electric
door locks. The micro switches are integrated in the door locks and not located at the door handles.
The main difference between fully and semi-electric door locks is the location of the micro switches.
The request to open the door from the inner or outer door handle is transmitted electrically from the respective
micro switch to the door control module. The door control module triggers an electric motor within the door lock,
which releases the rotary latch, opening the lock. The door can be opened with very little effort.
In addition, two Bowden cables are used to provide a mechanical connection between the door lock and the
inner/outer door handles. To open the door mechanically from the inside (in the event of an electrical
malfunction), the inner door handle must be pulled twice past the normal angle of operation. Opening the door
mechanically from the outside handle is only possible, after the door lock cylinder or the inner door handle were
operated.

Production Solution
Not applicable.

Page 2 of 8
© 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
Tip: For customer concerns described in this TSB, do not replace the door lock immediately! Follow the
diagnostic tree starting at the top to determine the root cause (Figure 1).

Figure 1. Follow diagnostic tree starting at the top.
Operating Error:
1. Determine if the concern is caused by incorrect operation.
2. Explain the functions of the electric door lock to the customer with reference to the Owner's Manual:
The following questions are helpful to determine if incorrect operation is causing the concern:
 Does the concern occur when the ignition is on or off (did the bus go to sleep when opening the door)?

Page 3 of 8
© 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.

 Is the inner door handle pulled too quickly or pulled all the way to the stop?
 Does the door open if you pull the inner door handle twice? Afterward, can you open the door with the
outer door handle?
 How does the vehicle behave compared to a similar vehicle?
3. The corresponding information in the Owner’s Manual, Repair Manual, in Guided Fault Finding and in TSB(s)
should also be considered.
Electrical Error
A6, A7, A8, and Q8:
1. Follow TSB 2055932: 57 Central locking/parking brake warning, alarm or exterior mirror issues, DTCs
B122D29, B14FF29 or U122800 stored to ensure that the door control modules are at the latest software
level and update them if necessary.
Audi e-tron quattro and Audi e-tron Sportback:
1. Follow TSB 2055933: 57 Exit warning message with various central locking & alarm issues, DTCs B122D29,
U122800, and/or B14FF29 stored to ensure that the door control modules are at the latest software level and
update them if necessary.
All models:
2. Interrogate the door control module fault memory of any affected door(s).
3. Delete fault memory if any DTC(s) are stored. Perform ignition cycle. Open and close the affected door(s).
4. Re-check fault memory of affected door control module(s).
5. If the DTC(s) do not return and the door(s) can be opened/closed as designed the door lock is electrically
OK. Follow the section “Mechanical Error” in this TSB and continue to observe for new DTC entries.
6. If the DTC(s) cannot be deleted or return, observe the following measuring value blocks for plausible
conditions while opening/closing the door(s):

Measured Value Name

Da0042

Da0052

Da00BB Da00BC

Door Status (Open/Closed, Locked/Unlocked, Emergency Unlock
Mode)

IDE0572 IDE0572 IDE0572 IDE0572
0
7
2
9

Central Locking Button

IDE04213

Rotary Latch Status

IDE02589

Status Door Lock

MAS06256

Page 4 of 8
© 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.

Switch For Inside Door Handle

MAS02099

Switch For Outside Door Handle

MAS02100

7. If any of the measuring value blocks are implausible, measure the resistance directly using the multimeter
function of the VAS tester:
A6, A7, Q8, Audi e-tron quattro, and Audi e-tron Sportback (models with semi-electric door lock):


At PIN #2 and PIN #4 of the door lock (ohms reading of emergency unlock switch, inner and outer door
handle switches connected in parallel)

A8 (models with electric door lock):
 At PIN #2 and PIN #4 of the door lock (ohms reading of emergency unlock switch)
 At inner and outer door handles (ohms reading of inner or outer door handle switches)
8. Compare readings with the specifications in the table below:

Component Active/Operated

Resistance in ohms

Emergency unlock switch

1000

Inner door handle switch

620

Outer door handle switch

270

Emergency unlock switch & inner door handle switch (semi-electric lock)

382

Emergency unlock switch & outer door handle switch (semi-electric lock)

212

Emergency unlock switch & inner door handle switch & outer door handle switch
(semi-electric lock)

158

9.

Readings of 1,000, 382, 212 and 158 ohms indicate that the emergency unlock function is active and that
the door lock can only be released mechanically. In this case, pull the inner door handle twice to its stop.
Then close the door, open it again and repeat the measurement. It should now read OL (overload) if the
inner and/or outer door handles are not operated.

10.

If the measurements are according to specifications, do not replace the door lock as it is not the root cause
of the customer’s concern.

11.

Visually and electrically check the PINs at the door lock and the door control module and the connecting
wiring.

Page 5 of 8
© 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.

12.

Check the wiring and connections at the door coupling points at the A-pillar and B-pillar.

Mechanical Error:
1.

Inspect the Bowden cables, especially the connections at the door lock and the inner and outer door
handles for any issues (twisting, loose connection, routing, damage, traces of water/ice, stiffness, etc.).

2.

Replace any defective components as necessary.

3.

Check if the outer door handles return flush to the zero/rest position.

4.

If they do not, follow TSB 2060196: 57 Exterior door handles do not return to the zero position to modify
the outer door handles as necessary.

5.

Check if the doors open/close freely and latch/unlatch smoothly.

6.

Adjust the striker plate, door alignment, and/or door hinges as necessary.
Tip: Parts replacement, without following this TSB, does not resolve this issue. Claims for replaced
parts will be subject to review.

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:

 5717 Door lock front.
 5719 Cable front.
 5817 Door lock rear.
 5819 Cable rear.
 9732 Door wiring harness.

Damage Code:

 0010
Or
 0040

Labor Operations:

Door lock front remove + reinstall

5717 195X

See SRT with
associated
operations

Page 6 of 8
© 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.

Diagnostic Time:

Claim Comment:

Door lock rear remove + reinstall

5817 195X

See SRT with
associated
operations

Cable front remove + reinstall

5719 1950

See SRT with
associated
operations

Cable rear remove + reinstall

5819 1950

See SRT with
associated
operations

Door wiring harness front or rear remove +
reinstall

9732 XXXX

See SRT with
associated
operations

GFF

0150 0000

Time stated on
the diagnostic
protocol (Max 30
TU)

Road test prior to the service procedure

No allowance

0 TU

Road test after the service procedure

No allowance

0 TU

As per TSB #2063236/1

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
Tool Number

Tool Description

VAS 6160/VAS 6150

VAS tester with the current version of ODIS (Windows 10)

VAG1594D

Auxiliary Measuring Set

VAS 1978/35-22

Tool for primary locking

VAS 1978/35-2

Tool for secondary locking

Page 7 of 8
© 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.

Additional Information
More information on this system can be found in the following resources:
 Owner’s Manual: Chapter “Opening and closing”.
 SSP 970293: The 2019 A8 Electrical and Electronic Systems.
 SSP 990493: The 2019 A8 Introduction.
 SSP 990393: The 2019 A8 Driver Assistance Systems.
The following Technical Service Bulletin(s) will be necessary to complete this procedure:
 TSB 2055932, 57 Central locking/parking brake warning, alarm or exterior mirror issues, DTCs B122D29,
B14FF29 or U122800 stored.
 TSB 2055933, 57 Exit warning message with various central locking & alarm issues, DTCs B122D29,
U122800, and/or B14FF29 stored.
 TSB 2060196, 57 Exterior door handles do not return to the zero position.
 TSB 2011732, 00 Software Version Management (SVM), operating instructions.
All part and service references provided in this TSB (2063236) 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 8 of 8
© 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.