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Technical Service Bulletin Transaction No.: 2079834/3
93 Electrical system: high-voltage battery - overview of charging complaints - A6/Q6 e- Release date: Jan 22. 2026
tron PPE ‘ ,
Condition

Model(s) Year(s) VIN Range Vehicle Specific Equipment

A6 Sportback e-tron, S6
Sportback e-tron (GH),
Q6 e-tron, Q6 Sportback
e-tron, SQ6 e-tron, and
SQ6 Sportback e-tron
(GF)

2025 All Not applicable

REVISION HISTORY

Revision |Date Purpose

3 - Revised Condition (Added additional Instructions)

2 12/15/2025 | Revised Condition (Corrected model table)

1 11/24/2025 | Initial publication

This TSB summarizes the known charging complaints relating to the specified vehicles and refers to the relevant
individual topics.

Reporting obligation number 2079502 must be observed FIRST (if it has been published for your market/the
vehicle in question)

Customer states:
See below for general charging complaints
Workshop findings:

See below.

Technical Background

Software and hardware issues in high-voltage charger JX6 and/or in the control unit for activation of charging flap
and charging socket J1245/1246.

Production Solution
Not applicable.

Service

Using the following table and the customer complaint or workshop findings, try to establish a reference to the
respective topic and then perform the corresponding recommended repair.

No.

Topic

(based on customer complaint/workshop
findings/event memory entry)

Recommended repair

Level 2 charging not possible (USA), AC charging
process is cancelled, charging socket lock does not
lock

See TSB 2078719, 93 Service info: high-voltage
ACAevel 2 charging faulty - Q6 e-tron

charging restricted. Please contact workshop”
message displayed; vehicle interior does not heat up,
preconditioning not possible, event memory entry
DA813B: B168AF4 — High-voltage heater specified
value not met - symptom: 11337731

2. |*Charging cable connected” is displayed in the See TSB 2077962, 93 A6/Q6 e-tron: charging cable
instrument cluster, despite it not being connected. is shown as being connected; U01E400
Gear cannot be engaged, vehicle is classified as a
breakdown
3. |AC charging only with limited charging power 7 kW or | See TSB 2079832, 93 A6 e-tron/Q6 e-tron -
3.x kW instead of 11 kW; AC charging only possible —_| vehicle/HV battery only charges using AC with
on one or two phases, car currently charging at the reduced capacity (7 kW instead of 11 kW) - PPE
wall box with max. 7.4 kW, although 11 kW would be
possible.
4. |AC charging does not work, DC charging works See TSB 2079334, 93 Q6 e-tron AC charging not
working, DC charging working
5. | High-voltage onboard supply warning lamp on: “AC __| This event memory should be ignored as it has no

effect.

If none of the topics listed above applies to this case, proceed using Guided Fault Finding. Ensure the vehicle has

the current combined software.

If you need additional technical repair support in this case, you must answer the following questions in advance:

1. Customer statement/precise customer complaint.

2. What exactly does not work: AC and/or DC charging?

3. More detailed description of fault: e.g. charging process aborts after xx seconds/does not start/etc.; photo
documentation of warning messages

4. Does the complaint always occur at the same charging station?

5. Can the complaint be reproduced?

6. Does the complaint only occur at one charging socket? If so, which one (right or left)?

7. What was the result of working through Guided Fault Finding?

8. What repairs have already been performed relating to the complaint?

Warranty
Claim Type: * — If the vehicle is outside of any warranty, this Technical Service Bulletin is informational
only.
Service Number: | 9352
Damage Code: 0040

Claim Comment:

As per TSB 2079834/3

Additional Information

All part and service references provided in this TSB (2079834) are subject to change and/or removal. Always check
with your Parts Department and/or ETKA for the latest information and parts bulletins. Please check the Repair
Manual for fasteners, bolts, nuts, and screws that require replacement during the repair.

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