2021-2023 Audi e-tron Charger Module Wrong Address TSB

Audi has released Technical Service Bulletin (TSB) 2063427/7 to address an issue where the high-voltage battery charger control module, identified as J1050, reports an incorrect diagnostic address after being replaced. This TSB, issued on June 11, 2024, supersedes previous bulletin Group 93 number 24-54 dated May 14, 2024, and provides updated service instructions for resolving the problem.

The core problem is that a newly installed J1050 module, which should report under diagnostic address 00C6, instead appears under address 8113 in the diagnostic scan tool. This incorrect reporting can prevent the high-voltage system from being activated, leading to charging difficulties or vehicle immobility. This TSB provides the necessary steps to correct the diagnostic address and restore proper function.

Symptoms

Owners of affected 2021-2023 Audi e-tron and e-tron Sportback vehicles may experience issues after the high-voltage battery charger control module (J1050) has been replaced. The primary symptom is that the new J1050 unit no longer reports in the diagnostic scan tool under its correct address word 00C6. Instead, it reports under address word 8113.

This incorrect diagnostic address can lead to a critical condition where the "high-voltage system still cannot be activated." If you encounter this specific "Audi e-tron charger module wrong address" problem after a charger module replacement, your vehicle's high-voltage charging capabilities will be impaired.

Technical Background

According to Audi, the underlying reason for the "Audi e-tron charger module wrong address" issue is that the replacement high-voltage battery charger control module (J1050) requires its diagnostic address to be changed or correctly configured. When a new module is installed, it may default to an incorrect address (8113) that prevents proper communication and activation within the vehicle's electrical system.

Repair Procedure Summary

Addressing the incorrect diagnostic address for the J1050 module involves specific steps depending on the vehicle's software version. The repair aims to ensure the module reports correctly under address 00C6 and allows the high-voltage system to activate.

For Software Versions 3112 or 3115 (=UNECE)

If your vehicle has software version 3112 or 3115 (UNECE), the battery charger may need to be replaced again, following specific connection sequences detailed in the workshop manual. Technicians must first check the resistance of the charging socket(s) using a VAS 1594 tool, measuring pins 24-60 and 4-61 on the 60-pin plug. The resistance values should be approximately 2.7k Ohm or 4.7k Ohm, with a tolerance of +/- 5%. After installing the battery charger, electrical connectors -1- and -2- are connected first, followed by connector -4- last. The module must then be activated via the workshop manual's Guided Functions: Commissioning 00C6 - Replace control module. If the On-Board Charger (OBC) still logs address 8113 instead of 00C6, the electrical system configuration must be updated by navigating through the diagnostic interface: 0019 - Data bus on board diagnostic interface – J533, then 0019 - Technical product information, and finally J533 - Technical Product information 2063053.

For All Other Software Versions

For vehicles with other software versions, the process involves using the ODIS diagnostic system. Technicians will need to access the High-Voltage Battery Charger Control Module 2, J1239 (Diagnostic address 8113), and change its diagnostic address from 8113 to 00C6. After this change, the test plan should be run, which will correct the diagnostic address. It's crucial to verify that the J1050 module now reports under 00C6 and that J1239 no longer reports under 8113. The replacement test plan for the J1050 module should then be completed. If the "high-voltage system still cannot be activated," the technician should end the Guided Fault Finding (GFF) session, restart it if any Diagnostic Trouble Codes (DTCs) are static, and work through DTC entries from the gateway (0019) according to the test plan. Finally, the electrical system configuration must be updated via the same diagnostic path as mentioned above: 0019 - Data bus on board diagnostic interface – J533, followed by 0019 - Technical product information, and J533 - Technical Product information 2063053.

Required Tools and Parts

To perform the repair described in TSB 2063427/7, technicians will need specific tools:

• VAS 1594: A wire harness repair set.
• VAS 6160/VAS 6150: A VAS tester equipped with the current version of ODIS (Windows 10).

Warranty Information

This Technical Service Bulletin outlines warranty claim procedures for the repair. Claims are generally covered for up to 48 months or 50,000 miles. For Audi Certified Pre-Owned (CPO) vehicles, coverage is designated as G10, requiring owner verification. The Service Number for this procedure is 9352, and the Damage Code is 0039. All warranty claims must adhere to the Audi Warranty Policies and Procedures Manual.

Important Warnings

If your vehicle falls outside of the specified warranty period or mileage, this Technical Service Bulletin is for informational purposes only. Owners whose vehicles are no longer under warranty should be aware that any repairs based on this TSB may not be covered free of charge.

Owner Action

If you own a 2021-2023 Audi e-tron or e-tron Sportback and have experienced issues with your high-voltage battery charger control module (J1050) after replacement, particularly if the "high-voltage system still cannot be activated" or you suspect an "Audi e-tron charger module wrong address" issue, it is recommended to contact an authorized Audi dealership. Inform them about TSB 2063427/7 and describe the symptoms you are experiencing. The dealership will be able to diagnose the problem and perform the necessary repair.

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Source: NHTSA ID 11002986