2021 Audi e-tron Charging Problems TSB 2061788/2

Owners of the 2021 Audi e-tron may experience various issues related to vehicle charging, affecting both DC and AC charging capabilities. These Audi e-tron charging problems can manifest as interruptions during charging sessions, non-functional charging stations, or issues with the charging flap mechanism. Audi has released Technical Service Bulletin (TSB) 2061788/2 to address these concerns through a software update for the onboard charger.

This TSB supersedes an earlier bulletin, Group 93 number 21-42, dated February 5, 2021, and includes updated Diagnostic Trouble Codes (DTCs) and revised conditions. The primary solution involves updating the onboard charger (OBC) software to resolve underlying communication errors that lead to these charging malfunctions.

Symptoms of Audi e-tron Charging Problems

Owners may notice one or more of the following symptoms indicating Audi e-tron charging problems:

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

Fault Codes / DTCs

When diagnosing these Audi e-tron charging problems, technicians may find one or more of the following Diagnostic Trouble Codes (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"
P0CA400	"Hybrid/EV Battery Charging Voltage High"

Technical Background

The root cause of these Audi e-tron charging problems is often an interruption in communication between the charger and the vehicle during DC charging, which can temporarily suspend the charging process. Additionally, the vehicle may experience errors with AC charging communications, contributing to the overall charging issues.

Repair Procedure Summary

The primary repair for these charging issues involves a software update for the onboard charger (OBC). The general procedure for technicians is as follows:

1. Before attempting to duplicate the customer's concern, technicians should check the software level of the battery control module (OBC), J1050. If the current software level is 0070, the software update should proceed.
2. All instructions outlined in TSB 2011732: 00 Software Version Management (SVM), operating instructions, must be followed carefully during the update process.
3. After the software update, if the problem persists, technicians should then attempt to duplicate the customer concern and follow the respective test plan for any new active DTCs related to the issue.

The updated software version is 0079, replacing the older version 0070. The SVM Code Input for this update is C6A008.

Required Tools or Parts

To perform the software update, technicians will need:

• A VAS tester, specifically VAS 6160/VAS 6150, running the current version of ODIS (Windows 10).

Warranty Information

This Technical Service Bulletin outlines specific warranty coverage for the software update:

• The repair is covered for vehicles up to 48 months or 50,000 miles, whichever comes first.
• For Audi Certified Pre-Owned (CPO) vehicles, coverage is under G10, requiring owner verification.
• If the vehicle is outside of the specified warranty period, this TSB serves as informational guidance only.

The service number for this procedure is 9352, with a damage code of 0039. Labor operations include a Software Update (0151 0000) with a maximum of 30 Technical Units (TU), and checking the charging system (9352 9999) for 20 TU. Diagnostic time and road tests are typically not allowed for separate claims.

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Source: NHTSA ID: 10189601