2021-2023 Audi e-tron High-Voltage Charger Wrong Diagnostic Address

Owners of 2021-2023 Audi e-tron and e-tron Sportback vehicles may encounter a specific issue after the high-voltage battery charger control module (J1050) has been replaced. This Technical Service Bulletin (TSB) 93 24 02 2063427/9, issued on August 27, 2024, and superseding TSB 93 24-70 dated July 10, 2024, details how to resolve the problem where the new control module reports under an incorrect diagnostic address.

Symptoms

The primary symptom of this issue is that after the high-voltage battery charger control module, J1050, is replaced due to a fault, the new unit no longer reports in the diagnostic scan tool under its correct address word 00C6. Instead, it reports under address word 8113. This can lead to the high-voltage system being unable to restart, with event memories potentially entered in address 0019.

Diagnosis

If the high-voltage battery charger control module, J1050, is replaced and subsequently reports under diagnostic address 8113 instead of 00C6, technicians should perform specific diagnostic steps. This involves ending the Guided Fault Finding (GFF) process and, if event memory entries are static, restarting GFF. Technicians must then work through the event memory entries from the gateway (address 0019) according to the test plan provided by Audi.

Repair Procedure Summary

The repair process for the Audi e-tron wrong diagnostic address issue varies slightly depending on the vehicle's software version. The overall goal is to ensure the high-voltage battery charger control module (J1050) correctly reports under diagnostic address 00C6 and that the high-voltage battery charger control module 2 (J1239), if present, no longer reports under 8113.

For software versions 3112 or 3115 (UNECE):

1. Order a new high-voltage battery charging unit. This TSB assumes the module has already been replaced, but if not, a new unit is required.
2. Before installing the new battery charger, check the charging socket(s) and their resistance. Using a VAS 1594 tool, measure pins on the 60-pin plug to the electrical system (pins 24-60 and 41-60). Expected resistance values are approximately 2.7k Ohm or 4.7k Ohm, with a tolerance of +/- 5%.
3. Install the battery charger, carefully observing the connection sequence: first connect electrical connectors -1- and -2-, then connect electrical connector -4- last.
4. Activate the battery charger as described in the workshop manual under Guided Functions: Commissioning 00C6 - Replace control module.

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. Using the ODIS diagnostic system, select the self-test button and 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 automatically 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, is no longer reporting under address word 8113.

Required Tools and Parts

To perform the diagnostic and repair procedures for the Audi e-tron wrong diagnostic address, technicians will need specific tools:

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

Important Warnings

If the high-voltage system still cannot be activated after following the initial repair steps, technicians must update the electrical system configuration. This involves selecting the self-test button and then navigating through the following path in the diagnostic tool:

• 0019 - Data bus on board diagnostic interface – J533
• 0019 - Technical product information
• J533 Technical Product information 2063053

Warranty Information

This Technical Service Bulletin is informational only if the vehicle is outside of any applicable warranty. For vehicles under warranty, claims must be submitted in accordance with the Audi Warranty Policies and Procedures Manual. Claims are subject to review and audit by Audi Warranty. The TSB specifies the following codes for warranty claims:

• Service Number: 9352
• Damage Code: 0039
• Labor Operations: Specific labor operations vary by software version and whether a charging unit 2 (AX5) is present. Examples include 9352 5550 for replacing the high-voltage charging unit, 0150 0060 for Guided Fault Finding (GFF), and 9352 0999 for loosening and securing the high-voltage charging unit.

Revision History

This bulletin, 93 24 02 2063427/9, has undergone several revisions to ensure accuracy and completeness:

• Revision 9: Updated measure for the second Onboard Charger (OBC).
• Revision 8 (July 10, 2024): Revised service measures for non-UNECE software and updated labor operations for warranty.
• Revision 7 (June 11, 2024): Added measures for non-UNECE software.

---

Source: NHTSA ID: 11007352