2021-2022 Audi e-tron Battery Charger Address Issue TSB

Audi has released Technical Service Bulletin (TSB) 93 22 68 2063427/2, dated February 15, 2022, for certain 2021-2022 Audi e-tron and e-tron Sportback quattro models. This bulletin supersedes the previous TSB Group 93 number 21-52, which was dated June 3, 2021, providing updated guidance for a specific diagnostic issue. The TSB was initially published on July 3, 2021, and revised on February 15, 2022, to specifically include Model Year 2022 vehicles within its scope.

The TSB focuses on a situation where the high-voltage battery charger control module, identified as J1050, reports an incorrect diagnostic address after it has been replaced. This can lead to difficulties in proper vehicle diagnosis and communication with the module.

Symptoms

Owners typically won't notice a direct symptom related to this issue, as it arises during workshop diagnosis after a component replacement. The primary symptom is observed by technicians:

• After the high-voltage battery charger control module (J1050), which normally uses address word 00C6, is replaced due to a fault, the new unit no longer reports under address word 00C6 in the diagnostic scan tool.
• Instead, the newly installed module incorrectly reports under address word 8113, often identified as High-Voltage Battery Charger Control Module 2, J1239.

This discrepancy means the diagnostic system cannot properly communicate with the correct module, impacting further troubleshooting or system checks. The correct Audi e-tron battery charger address is crucial for accurate diagnostics.

Diagnosis / Trigger Conditions

This particular issue with the Audi e-tron battery charger address is specifically triggered when the original high-voltage battery charger control module (J1050) has been replaced due to a prior fault. The technical background indicates that the replacement part needs to have its diagnostic address or address word changed to function correctly within the vehicle's system.

The problem becomes apparent when a technician attempts to scan the vehicle after the replacement. The diagnostic tool expects to find the J1050 module at address 00C6, but instead finds an unexpected module (J1239) at address 8113, indicating a miscommunication or misidentification of the component.

Repair Procedure Summary

To resolve the incorrect Audi e-tron battery charger address, technicians must use a diagnostic scan tool with Guided Functions to correct the module's diagnostic address. This procedure ensures the newly installed module communicates correctly with the vehicle's systems. The process involves the following steps:

1. Select Module: Using the diagnostic scan tool, technicians must select "High-Voltage Battery Charger Control Module 2, J1239" which is currently reporting at Diagnostic address 8113.
2. Access Functions: Navigate to the functions available for "8113 - High-Voltage Battery Charger Control Module 2".
3. Change Address: Execute the function to "Change diagnostic address from 8113 to 00C6". This step reconfigures the module's reporting address.
4. Run Test Plan: After changing the address, the technician must run the diagnostic test plan. The scan tool will then automatically correct the diagnostic address within the vehicle's system.
5. Verify Correction: It is essential to check that the high-voltage battery charger control module, J1050, is now correctly reporting in the scan tool under address word 00C6. Simultaneously, confirm that "High-Voltage Battery Charger Control Module 2, J1239" is no longer reporting under address word 8113. This confirms the address change was successful.
6. Complete Replacement Test Plan: Finally, the technician must finish the replacement test plan for the high-voltage battery charger control module, J1050, to complete the repair.

Warranty Information

Audi states that this Technical Service Bulletin provides extended repair instructions and should not be used for separate billing. Any additional time required for this specific diagnostic address correction should be included within the existing "GFF time" allocated for the original repair that necessitated the replacement of the high-voltage battery charger control module.

Owner Action

If your 2021-2022 Audi e-tron or e-tron Sportback quattro has recently had its high-voltage battery charger control module (J1050) replaced, and you suspect diagnostic issues, it is recommended to consult with an authorized Audi service center. Technicians are aware of this TSB and can perform the necessary diagnostic address correction.

NHTSA ID: 2063427