2021-2022 Audi e-tron myAudi App Charging Notification TSB

Symptoms

Owners of 2021-2022 Audi e-tron models may notice that their myAudi app reports the vehicle is done charging multiple times, even when the charging process has not been interrupted or restarted. This repeated Audi e-tron charging notification can be confusing and lead to unnecessary checks.

Technical Background

Audi has identified that the root cause of the repeated Audi e-tron charging notification is a software issue or diagnostic irregularity within the vehicle's hybrid battery management system. New software has been put into production to address this concern.

Important Warnings for Service

When addressing this issue, it is critical to follow specific safety precautions, especially concerning the high-voltage components:

• High-Voltage Cable Disconnection: To prevent the high-voltage battery from charging during the software update, the high-voltage charging cable on vehicles with high-voltage components must be unplugged BEFORE the SVM code is entered. Charging the high-voltage battery during a software update can potentially damage the high-voltage components.
• Diagnostic Setup: The parking brake must be released, and the diagnostic interface must be hardwired to the scan tool during the update process.
• Applicability: This Technical Service Bulletin (TSB) only applies if the installed software part number, hardware part number, and software version match the specifications provided in the TSB's comparison table.

Diagnosis

To diagnose the Audi e-tron charging notification issue, technicians will perform the following steps:

1. J840 Identification: Run the ODIS Guided Function for the hybrid battery management control module (J840, address word 008C). This will identify the installed software part number, hardware part number, and software version of the J840.
2. SX6 Subsystem Identification: After identifying the J840, the scan tool will prompt to read additional identification data for subsystems. Technicians will select 'Yes' to display the switching unit for high-voltage battery (SX6, address word 06D0), which is listed as the battery interrupt switch.
3. Version Comparison: The installed software and hardware part numbers and versions for both the J840 and SX6 control modules are then compared against a table provided in the TSB. If the installed versions match those listed in the table, the vehicle is eligible for the software update.

Repair Procedure Summary

The repair involves updating the software for the hybrid battery management (J840) and the switching unit for high-voltage battery (SX6). This is done using the Software Version Management (SVM) system.

1. Prepare Vehicle: Ensure the high-voltage charging cable is unplugged and the parking brake is released.
2. Access SVM: Follow the instructions in TSB 2011732: 00 Software Version Management (SVM) operating instructions.
3. Software Update: Update the J840 and SX6 control units using the SVM action code RWBETRON2. This will install the new software versions (e.g., 4KE915233H version 0462 for J840 and 4KE915253E version 0445 for SX6).

Required Tools or Parts

Technicians will require access to the ODIS diagnostic system and must follow the procedures outlined in TSB 2011732: 00 Software Version Management (SVM) operating instructions.

Owner Action and Warranty Information

If your 2021-2022 Audi e-tron is experiencing the repeated Audi e-tron charging notification in the myAudi app, you should contact your authorized Audi dealer. The software update is typically covered under warranty if your vehicle is still within the warranty period.

• Service Number: 9325
• Damage Code: 0039
• Labor Operations: Software Update (0151 0000, 50 TU)
• Diagnostic Time: GFF (Checking installed software per TSB) (0150 0000, Max 30 TU)
• Claim Comment: As per TSB #2064636/1

If your vehicle is outside of warranty, this Technical Service Bulletin serves as informational guidance for your service provider.

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NHTSA ID: 10202870