2021-2023 Audi e-tron Charger Diagnostic Address Issue TSB

Audi has released Technical Service Bulletin (TSB) 93 24 02 2063427/9 to address a specific issue affecting the high-voltage battery charger control module (J1050) in certain 2021-2023 Audi e-tron vehicles. This bulletin, dated August 27, 2024, supersedes TSB 24-70 dated July 10, 2024, and provides updated measures for resolving the problem. The core of the issue is that after the J1050 module is replaced, it may report an incorrect diagnostic address, leading to system malfunctions.

Symptoms

Owners or technicians may notice the following symptoms related to the Audi e-tron charger address problem:

• The high-voltage battery charger control module, J1050, was replaced due to a fault.
• After replacement, 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.
• The high-voltage system cannot be restarted, and event memories may be entered in address 0019.

Fault Codes / Diagnostic Addresses

This TSB primarily deals with incorrect diagnostic address reporting rather than traditional DTCs. The key identifiers are:

• 00C6: The correct diagnostic address for the high-voltage battery charger control module (J1050).
• 8113: The incorrect diagnostic address that the J1050 module may report after replacement.
• 0019: An address where event memories may be entered if the high-voltage system fails to restart.

Diagnosis / Trigger Conditions

The issue typically arises after the high-voltage battery charger control module (J1050) has been replaced. The diagnostic scan tool will show the J1050 reporting under address 8113 instead of 00C6. If the high-voltage system cannot be activated, further diagnostic steps are required to update the electrical system configuration.

Repair Procedure Summary

The repair procedure varies slightly depending on the vehicle's software version. The overall goal is to ensure the high-voltage battery charger control module reports the correct diagnostic address (00C6).

For Software Version 3112 or 3115 (UNECE)

1. If the battery charger was replaced, it must be replaced again, ensuring the correct connection sequence for the battery charger is followed as described in the workshop manual.
2. Before installing the new charging unit, check the charging socket(s) and their resistance. Measure pins 24-60 and 41-60 on the 60-pin plug of the battery charger using a VAS 1594 tool. The resistance values should be approximately 2.7k Ohm or 4.7k Ohm, with a tolerance of +/- 5%.
3. Install the battery charger, observing the connection sequence shown in Figure 1 (first connect electrical connectors 1 and 2, then connector 4 last).
4. Activate the battery charger as per the workshop manual's Guided Functions: Commissioning 00C6 - Replace control module.
5. If the onboard charger (OBC) still logs address 8113 instead of 00C6, end Guided Fault Finding (GFF). If event memory entries are static, restart GFF and work through the event memory entries from gateway 0019 according to the test plan.
6. If the high-voltage system still cannot be activated, update the electrical system configuration by selecting the self-test button and navigating to:
   • 0019 - Data bus on board diagnostic interface – J533
   • 0019 - Technical product information
   • J533 Technical Product information 2063053

For All Other Software Versions

1. If the vehicle has PR number KB4 (onboard charging unit up to 22kW), first disconnect charging unit 2 (AX5).
2. Select the self-test button and then navigate to:
   • High-Voltage Battery Charger Control Module 2, J1239 (Diagnostic address 8113)
   • 8113 - High-Voltage Battery Charger Control Module 2, functions
   • 8113 - Change diagnostic address from 8113 to 00C6
3. Run the test plan. The scan tool will correct the diagnostic address.
4. Verify that the high-voltage battery charger control module, J1050, now reports under address word 00C6 and that the high-voltage battery charger control module 2, J1239, no longer reports under address word 8113.

Required Tools or Parts

Technicians will require specific tools to perform the diagnostic and repair procedures for the Audi e-tron charger address issue:

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

Warranty Information

For vehicles still under warranty, claims for this repair should be submitted in accordance with the Audi Warranty Policies and Procedures Manual. The claim type is informational only if the vehicle is outside of warranty. The relevant codes for warranty claims are:

• Service Number: 9352
• Damage Code: 0039
• Claim Comment: As per TSB 2063427/9

Labor operations vary based on the software version and whether a charging unit replacement or diagnostic work is performed. Examples include 9352 5550 for replacing the high-voltage charging unit and 0150 0060 for Guided Fault Finding (GFF).

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Source: NHTSA ID: 11007271