2021-2026 Audi Vehicle Locking System Diagnostic TSB

Owners of 2021-2026 Audi vehicles may occasionally notice their car's locking system operating unexpectedly, leading to a concern that the vehicle has "locked itself." This Technical Service Bulletin (TSB) 57 24 65 2022032/11, issued by Audi, serves as a comprehensive guide for technicians to diagnose and understand the various events that can trigger the vehicle's locking and unlocking mechanisms.

This TSB supersedes previous versions, including Group 57 number 22-00 dated December 9, 2022, and earlier revisions from April 1, 2021, and December 9, 2022, indicating ongoing updates to the diagnostic information.

Symptoms

The primary symptom addressed by this TSB is when a customer reports that their vehicle has "locked itself" or that the locking system has operated without their direct input. This can include situations where the vehicle locks or unlocks unexpectedly, leading to confusion or concern about the security of the vehicle. Understanding the cause of this behavior is key to resolving any issues related to the Audi vehicle locking system.

Technical Background

To diagnose unexpected locking or unlocking events, technicians must inspect the vehicle's locking history. This history is stored within specific control modules:

• Comfort System Central Control Module (J393): This module is typically found at address word 0046.
• Central Locking Control Module (J429): This module is typically found at address word 0009.

These modules record events related to the locking system, providing a digital trail of commands and triggers. The TSB emphasizes that there is no production solution for this condition, meaning the focus is purely on diagnostic investigation.

Diagnostic Information for Locking History

Inspecting the vehicle's locking history involves accessing specific control modules and their measuring value blocks (MVBs) to retrieve event data. The TSB outlines different procedures and event storage capacities based on the vehicle model:

For A3 (8P), Q3 (8U), R8 (42), and TT (8J) models:

• Control Module: Central Locking Control Module Address 0009
• Number of Events: 10
• MVB: 101-110
• Note: For A3, TT, and R8 models, measuring value blocks are only available from model year 2010 onwards.

For A3 (8V), Q3 (F3), and TT (FV) models:

• Control Module: Central Locking Control Module Address 0009
• Number of Events: 10
• MVB: "central locking history data"

For A4 (8K), A5 (8T + 8F), Q5 (8R), A6/A7 (4G), A8 (4H), and R8 (4S) models:

• Control Module: Comfort System Control Module Address 0046
• Number of Events: 5
• MVB: 55-59

For A6 (4F) and Q7 (4L) models:

• Control Module: Comfort System Control Module Address 0046
• Number of Events: 1
• MVB: 17
• Note: On these models, only the very last operating command of the vehicle locking can be read. "Auto lock overwrites this value."

For A4 (F4, 8W), A5 (F5), Q5 (FY), Q7, Q8 (4M), A6 (4A), A7 (4KA), A8 (4N), e-tron (GE), and e-tron GT (F8) models:

• Control Module: Comfort System Control Module Address 0046
• Number of Events: 20
• MVB: "History data central locking" ** "last event"

For Q4 (F4) models:

• Control Module: Data Bus On Board Diagnostic Interface Address 0019

For A5 (FU), A6 e-tron (GH), Q5 (GU), Q6 (GF) models:

• Control Module: Electronic Central Electrical (BCM) Address 0009
• Number of Events: 20
• MVB: "History data central locking" // "History data central locking unlocking"

Locking Event Codes

The TSB provides detailed tables that map event IDs to specific locking/unlocking actions, helping technicians interpret the data retrieved from the control modules. These codes explain how the Audi vehicle locking system was activated.

Table A: Common Locking Events

This table applies to A3 (8P, 8V), Q3 (8U, F3), R8 (42, 4S), TT (8J, FV), A4 (8K), A5 (8T + 8F), Q5 (8R), A6/A7 (4G), A8 (4H) models.

ID	Value
0	No Data Available
1	Lock Cylinder, L/F
2	Lock Cylinder, R/F
3	Lock Cylinder, Trunk
4	Remote Control Key
5	Remote Control Key, Trunk Button
6	Door Handle Sensor, L/F
7	Door Handle Sensor, R/F
8	Door Handle Sensor, L/R
9	Door Handle Sensor, R/R
10	Keyless Entry, Trunk
11	Interior Button, L/F
12	Interior Button, R/F
13	Interior Button, L/R
14	Interior Button R/R
15	Automatic Relock (Vehicle Was Not Opened Within One Minute Of Unlocking)
16	Terminal 15 (Accessory Power) On
17	Crash
18	Auto Lock (Vehicle Speed Over 9 MPH (15 km/h)
19	Auto Unlock (After Switching S-Contact Off (Vehicle Off)
20	Airbag Signal Failure

Table B: A6 (4F) and Q7 (4L) Specific Locking Events

ID	Value
0	No Data Available
1	Remote Control Key
2	Remote Control Key, Trunk Button
3	Keyless Lock
4	Lock Cylinder, L/F
5	Interior Button, L/F
6	Interior Button, R/F
7	Interior Button, L/R
8	Interior Button R/R
9	Auto Lock (Vehicle Speed Over 9 MPH (15 km/h)
10	Automatic Relock (Vehicle Was Not Opened Within One Minute Of Unlocking)

Table C: Newer Model Locking Events

This table applies to A4 (F4, 8W), A5 (F5), Q5 (FY), Q7, Q8 (4M), A6 (4A), A7 (4KA), A8 (4N), e-tron (GE), and e-tron GT (F8) models.

ID	Value
0	no data present
1	Lock cylinder L/F
2	Lock cylinder R/F
3	Remote control
4	Outside door handle sensor, L/F
5	Outside door handle sensor, R/F
6	Outside door handle sensor, L/R
7	Outside door handle sensor, R/R
8	Driver interior locking button
9	Front passenger interior locking button
10	Driver side rear interior locking button
11	Front passenger side rear interior locking button
12	Re-locking to opening via radio or outside door handle sensor
13	Autolock
14	Locking mechanism button in the rear lid
15	Locking via Smartphone-App
16	Locking by special purpose vehicle control module
17	Distance to vehicle
18	The terminal control, remote control
19	Terminal control, outside door handle sensor, L/F
20	Terminal control, outside door handle sensor, R/F
21	Terminal control, outside door handle sensor, L/R
22	Terminal control, outside door handle sensor, R/R
23	Terminal control, rear lid lock button / rear key sensor
24	Terminal control, locking cylinder, L/F
25	Terminal control, a front sensor for the keyless locking system
26	Piloted parking
27	Remote locking via connect-service
28	Remote locking via a vehicle positioning system
29	Antenna for short-range communication in the driver door
30	Antenna for short-range communication in the front passenger door
31	Antenna for close range communication in the rear lid
32	Pre Sense
35	Auto Lock Rear Lid

Important Warnings

Audi explicitly states regarding this TSB (2022032) that this is not a fault covered under warranty. It is not possible to bill for fault finding and/or component replacement under warranty. The TSB is informational only and does not apply to any Audi Warranty. Owners should be aware that any diagnostic work or parts replacement related to an unexpected Audi vehicle locking system operation may incur out-of-pocket costs.

Owner Action

If you experience your Audi vehicle locking system operating unexpectedly, it is recommended to contact an authorized Audi service center. While this TSB does not outline a specific repair procedure, it provides technicians with the necessary information to investigate the root cause of the locking events by reviewing the vehicle's stored history data. They can use the event codes to determine what triggered the locking or unlocking action.

NHTSA ID: 11009941