2023-2026 Audi Door Lock Malfunction TSB 2063236/6

Symptoms

Owners of affected 2023-2026 Audi vehicles may experience various issues with the front or rear door locks. These symptoms can include the door being unable to be opened from either the outside or the inside. Drivers might also see warning messages on the dashboard, such as those related to the "exit warning system" or "central locking."

In some cases, the vehicle may appear to be locked, but a door can still be opened without using a key. General door lock malfunctions, where the door locks simply do not work as expected, are also reported. These issues point to a problem with the Audi e-tron door lock mechanism.

Fault Codes (DTCs)

When diagnosing an Audi e-tron door lock issue, technicians may find one or more of the following Diagnostic Trouble Codes (DTCs) logged in the vehicle's event memory:

Code	Description	Module
B122D29	Lock unit for central locking Implausible signal
B122B13	Central locking motors Open circuit
B14FF29	Child safety lock motor Implausible signal

Diagnosis and Trigger Conditions

Before proceeding with repairs, it's crucial to properly diagnose the Audi e-tron door lock issue. Technicians should first verify if the complaint is due to incorrect operation by the customer. For instance, pulling the interior door handle too quickly or past its end stop can sometimes generate messages or faults without an actual problem with the door lock.

It's important to check if the door opens normally when the interior handle is pulled twice or if the exterior handle is used. If so, there might not be a fault in the door lock. For every complaint, the event memory in the control unit should be read and then erased. After erasing, the ignition should be cycled, and the door opened and closed again to check if faults re-log. If no faults reappear, the door lock is considered functional.

A mechanical inspection is also necessary. This involves checking the electrical wiring and the Bowden cables at the door lock and interior/exterior door handles for any damage, twisting, incorrect routing, traces of water or ice, or stiffness. Additionally, verify that the exterior door handle returns to its flush original position; if it does not, refer to TSB 2060196, "57 Exterior door handles do not return to the zero position."

Important Warnings

Owners should be aware that if the vehicle is outside of any warranty, this Technical Service Bulletin is informational only. In such cases, any diagnostic or repair costs may not be covered by Audi.

Repair Procedure Summary

If the diagnostic checks and mechanical inspection do not resolve the Audi e-tron door lock issue, and event memory entries persist, the affected door lock should be replaced according to the Workshop Manual. The repair process involves:

1. Initial Assessment: Confirm the complaint is not due to incorrect customer operation and explain door lock functions if necessary.
2. Clarify Complaint: Work with the customer to understand the exact nature of the door lock problem.
3. Event Memory Management: Read and erase any stored fault codes from the control unit's event memory.
4. Mechanical Inspection: Thoroughly inspect the electrical wiring and Bowden cables for damage or irregularities. Replace any damaged components.
5. Door Lock Replacement: If the problem persists, replace the faulty door lock. This repair is covered under service numbers 5717 for the front door lock and 5817 for the rear door lock, with a damage code of 0040.
6. Final Adjustments: Check and adjust the door setting to ensure ease of movement and correct closing.

Required Tools

To perform the diagnostic and repair procedures outlined in TSB 57 24 58 2063236/6, technicians will require specific tools:

• VAS 6160/VAS 6150: A VAS tester equipped with the current version of ODIS (Windows 10) diagnostic software.

Owner Action and Next Steps

If you own a 2023-2026 Audi A6, A6 allroad, S6, RS 6 Avant, A7, S7, RS 7, e-tron GT, RS e-tron GT, A8, SQ8, e-tron, e-tron Sportback, RS Q8, Q8 e-tron, Q8 Sportback e-tron, SQ8 e-tron, or SQ8 Sportback e-tron and are experiencing door lock malfunctions or seeing any of the mentioned DTCs (B122D29, B14FF29, B122B13), it is recommended to contact an authorized Audi service center. Provide them with a detailed description of the symptoms and any warning messages you have observed. The service center will perform the necessary diagnostics and repairs as outlined in this Technical Service Bulletin.

Revision History

This Technical Service Bulletin, identified as 57 24 58 2063236/6, is Revision 6 and was issued on August 30, 2024. It supersedes the previous Technical Service Bulletin Group 57 number 24-31, dated February 15, 2024. Earlier revisions included updates to the title, header, condition, technical background, production solution, service, warranty, and additional information, reflecting Audi's ongoing efforts to refine diagnostic and repair procedures for the Audi e-tron door lock and related components.

Source: NHTSA ID 11007321