2021 Audi e-tron Charging Problems TSB 2061788/1

Owners of the 2021 Audi e-tron may encounter various Audi e-tron charging problems, ranging from charging interruptions to non-responsive charging flaps. These issues are typically linked to communication errors within the vehicle's charging system and can be identified by specific Diagnostic Trouble Codes (DTCs) stored in the onboard charger control module.

Symptoms

Customers may notice one or more of the following Audi e-tron charging problems:

• On certain DC chargers, the DC charging is interrupted after 15 minutes or does not start at all.
• DC charging at public charging stations does not work.
• AC/DC charging is interrupted.
• The function button for charging flap 1/2 is defective.
• The charging flap cannot be opened.
• The auxiliary heating was activated via app but the vehicle was not pre-heated.

Fault Codes / DTCs

Technicians investigating these Audi e-tron charging problems may find one or more of the following DTCs stored in the high-voltage battery charger control module (OBC), J1050 (address word 00C6):

Code	Description
B1A8604	Function button charge door 1 faulty
B1A8704	Function button charge door 2 faulty
U112100	Databus missing message
U13AE00	Active parking system control module
U15AB00	Fast battery charging (DC) Communication
P31CF00	Charge cover A recognition cover locking
P31E700	AC power supply cable Open circuit
U15AC00	Signal damping log Malfunction
P1A1500	Charging unit 2 Function restriction
U15B500	Fast battery charging (DC) Charging station

Technical Background

The root cause of these charging issues lies in communication interruptions between certain DC chargers and the vehicle, which can temporarily suspend charging. Additionally, the vehicle may experience AC charging communication errors. The manufacturer has identified that an update to the onboard charger (OBC) software is necessary to resolve these communication issues.

Repair Procedure Summary

To address the Audi e-tron charging problems, a software update for the onboard charger (OBC) is required. The process involves:

1. Software Level Check: Before attempting to diagnose or duplicate the customer's concern, the technician must check the current software level of the battery control module (OBC), J1050 (address word 00C6). The relevant hardware part number is 5QE915684AD with software version H32 and level 0070.
2. Software Update: If the current software level is 0070, a software update is necessary. This update involves flashing the onboard charger with new software (Part Number 5QE915684AT, Version 0079) using SVM Code Input C6A008.
3. Follow SVM Instructions: All instructions outlined in TSB 2011732: 00 Software Version Management (SVM), operating instructions, must be followed during the update process.
4. Post-Update Check: After the software update, if the customer's concern persists or new active DTCs are present, the technician should follow the respective test plan for those specific problems.

Required Tools or Parts

Performing this software update requires specific diagnostic equipment:

• VAS 6160/VAS 6150: A VAS tester with the current version of ODIS (Windows 10) is needed to perform the software update.

The software part numbers involved are:

• Old Software Part Number: 5QE915684AD (Version 0070)
• New Software Part Number: 5QE915684AT (Version 0079)

Warranty Information

This repair is covered under warranty for up to 48 months or 50,000 miles. For Certified Pre-Owned (CPO) vehicles, it falls under claim type G10, subject to owner verification. The service number for this procedure is 9352, with a damage code of 0039. Labor operations include Software Update (0151 0000) and Check charging system (9352 9999). All warranty claims must adhere to the Audi Warranty Policies and Procedures Manual, and claims are subject to review by Audi Warranty.

Important Warnings

• If the vehicle is outside any warranty, this Technical Service Bulletin is informational only. Owners of vehicles outside warranty coverage should consult with their dealer regarding potential costs for this software update.

NHTSA ID: 10186996