Service Action
Code: 27K2
Subject
Release Date
REVISION SUMMARY
Affected Vehicles

REVISION

12V Battery Control Module Software
February 22, 2023
Information about required voltage added to work instructions

Country
USA
CAN

Beginning
Ending
Model Year Model Year
2022
2022
2022
2022

Vehicle
E‐TRON GT
E‐TRON GT

Vehicle
Count
3,453
395

Check Campaigns/Actions screen in Elsa on the day of repair to verify that a VIN qualifies for repair under this
action. Elsa is the only valid campaign inquiry & verification source.

Problem Description

Corrective Action
Code Visibility



Campaign status must show “open.”



If Elsa shows other open action(s), inform your customer so that the work can also be completed at
the same time the vehicle is in the workshop for this campaign.

On Audi e-tron GT vehicles manufactured within a specific period, the 12V battery may be
discharged completely in isolated cases due to a software issue in the 12V battery control
module.
Update the 12V battery control module software.
On or about February 17, 2023, the campaign code was applied to affected vehicles.

Owner Notification

Owner notification will take place in February 2023. Owner letter examples are included in this
bulletin for your reference.

Campaign Expiration
Date

This campaign expires on March 01, 2028. Repairs must be performed on or before this date
to be eligible for payment. Keep this expiration date in mind when scheduling customers for this
action. If a customer wishes to have this service performed after the expiration date, your
dealerships normal costs associated with this repair will apply.

Additional Information

Please alert everyone in your dealership about this action, including Sales, Service, Parts
and Accounting personnel. Contact Warranty if you have any questions.
Dealers must ensure that every affected inventory vehicle has this campaign completed before
delivery to consumers.

The repair information in this document is intended for use only by skilled technicians who have the proper tools, equipment and training to correctly and safely maintain your vehicle. These
procedures are not intended to be attempted by “do-it-yourselfers,” and you should not assume this document applies to your vehicle, or that your vehicle has the condition described. To
determine whether this information applies, contact an authorized Audi dealer. 2023 Audi of America, Inc. and Audi Canada. All Rights Reserved.
February 2023

27K2 Page 1 of 9

Claim Entry Instructions
The labor times listed here may differ from the labor operations and labor times listed in ELSA.
After campaign has been completed, enter claim as soon as possible to help prevent work from being duplicated
elsewhere. Attach the Elsa screen print showing action open on the day of repair to the repair order.
If customer refused campaign work:
 U.S. dealers: Submit the request through Audi Warranty Online under the Campaigns/Update option.
 Canada dealers: Upload the repair order [signed by customer] to Audi WIN/Operations/Campaign Closure.
Service Number

27K2

Damage Code

0099

Parts Vendor Code
Claim Type

002
Sold vehicle: 7 10
Unsold vehicle: 7 90

Causal Indicator
Vehicle Wash/Loaner
Criteria I.D.

Mark labor as causal
Do not claim wash/loaner under this action
01

LABOR
Labor Op

Time Units

Description

6644 19 50

SEE ELSA

Remove+Install Cowl panel trim

2706 89 50

10

Connect battery charger

0151 00 00

Time stated on
diagnostic protocol

Perform software update

The repair information in this document is intended for use only by skilled technicians who have the proper tools, equipment and training to correctly and safely maintain your vehicle. These
procedures are not intended to be attempted by “do-it-yourselfers,” and you should not assume this document applies to your vehicle, or that your vehicle has the condition described. To
determine whether this information applies, contact an authorized Audi dealer. 2023 Audi of America, Inc. and Audi Canada. All Rights Reserved.
February 2023

27K2 Page 2 of 9

Customer Letter Example (USA)

This notice applies to your vehicle: ,

Subject: Service Action 27K2 - 12V Battery Control Module Software
Dear Audi Owner,
As part of Audi’s ongoing commitment to customer satisfaction, we are informing you of our decision to conduct a
service action on certain 2022 model year Audi vehicles. Our records show that you are the owner of a vehicle
affected by this action.
What is the issue?

On Audi e-tron GT vehicles manufactured within a specific period, the 12V battery may
be discharged completely in isolated cases due to a software issue in the 12V battery
control module.

What will we do?

Your authorized Audi dealer will update the 12V battery control module software. This
work will take about an hour to complete and will be performed for you free of charge.

What should you do?

In order to limit any possible inconvenience, please contact your authorized Audi dealer
as soon as possible to schedule this service. Please keep in mind that your dealer may
need additional time for the preparation of the repair, as well as to accommodate their
daily workshop schedule. For your convenience, you can also visit www.audiusa.com
and click on the “Find a Dealer” link to locate a dealer near you and schedule this
service.
This service action will be available for you free of charge only until March 01, 2028.
If you wish to have this service performed after that date, your dealer’s normal costs
associated with this repair will apply.

Lease vehicles and
address changes

If you are the lessor and registered owner of the vehicle identified in this action, please
forward this letter immediately via first-class mail to the lessee within ten (10) days of
receipt. If you have changed your address or sold the vehicle, please fill out the
enclosed prepaid Owner Reply card and mail it to us so we can update our records.

Can we assist you
further?

If your authorized Audi dealer fails or is unable to complete this work free of charge
within a reasonable time, please contact Audi Customer Experience at 1-800-253-2834
or via our “Contact Us” page at www.audiusa.com.

Checking your vehicle
for open Recalls and
Service Campaigns

To check your vehicle’s eligibility for repair under this or any other recall/service
campaign, please visit the Recall/Service Campaign Lookup tool at
www.audiusa.com and enter your Vehicle Identification Number (VIN).

We apologize for any inconvenience this matter may cause; however we are taking this action to help ensure your
vehicle continues to meet and exceed your expectations.
Sincerely,
Audi Customer Protection

The repair information in this document is intended for use only by skilled technicians who have the proper tools, equipment and training to correctly and safely maintain your vehicle. These
procedures are not intended to be attempted by “do-it-yourselfers,” and you should not assume this document applies to your vehicle, or that your vehicle has the condition described. To
determine whether this information applies, contact an authorized Audi dealer. 2023 Audi of America, Inc. and Audi Canada. All Rights Reserved.
February 2023

27K2 Page 3 of 9

Customer Letter Example (Canada)

This notice applies to your vehicle: ,
Subject: Service Action 27K2 - 12V Battery Control Module Software
Dear Audi Owner,
As part of Audi’s ongoing commitment to customer satisfaction, we are informing you of our decision to conduct a
service action on certain 2022 model year Audi vehicles. Our records show that you are the owner of a vehicle
affected by this action.
What is the issue?

On Audi e-tron GT vehicles manufactured within a specific period, the 12V battery may
be discharged completely in isolated cases due to a software issue in the 12V battery
control module.

What will we do?

Your authorized Audi dealer will update the 12V battery control module software. This
work will take about an hour to complete and will be performed for you free of charge.

What should you do?

In order to limit any possible inconvenience, please contact your authorized Audi dealer
as soon as possible to schedule this service. Please keep in mind that your dealer may
need additional time for the preparation of the repair, as well as to accommodate their
daily workshop schedule.
This service action will be available for you free of charge only until March 01, 2028.
If you wish to have this service performed after that date, your dealer’s normal costs
associated with this repair will apply.

Lease vehicles and
address changes

If you are the lessor and registered owner of the vehicle identified in this action, please
forward this letter immediately via first-class mail to the lessee within ten (10) days of
receipt. If you have changed your address or sold the vehicle, please fill out the
enclosed prepaid Owner Reply card and mail it to us so we can update our records.

Can we assist you
further?

If your authorized Audi dealer fails or is unable to complete this work free of charge
within a reasonable time, please contact Audi Customer Relations Monday through
Friday from 8AM to 8PM EST at 1-800-822-2834 or via our “Contact Audi Canada”
page at www.audi.ca.

We apologize for any inconvenience this matter may cause; however we are taking this action to help ensure your
vehicle continues to meet and exceed your expectations.
Sincerely,
Audi Customer Protection

The repair information in this document is intended for use only by skilled technicians who have the proper tools, equipment and training to correctly and safely maintain your vehicle. These
procedures are not intended to be attempted by “do-it-yourselfers,” and you should not assume this document applies to your vehicle, or that your vehicle has the condition described. To
determine whether this information applies, contact an authorized Audi dealer. 2023 Audi of America, Inc. and Audi Canada. All Rights Reserved.
February 2023

27K2 Page 4 of 9

Required Tools

Battery Tester/Charger
Diagnostic Tester

-VAS5908-

-VAS6150X/VAS6160X-

(or equivalent charger with
a current rating of at least
90A)

(or equivalent)

Repair Instruction
Section A - Check for Previous Repair



Enter the VIN in Elsa and proceed to the
“Campaign/Action” screen.

TIP
On the date of repair, print this screen and keep a
copy with the repair order.


Confirm the Campaign/Action is open .
If the status is closed, no further work is required.



Note the Applicable Criteria ID for use
in determining the correct work to be done and
corresponding parts associated.
CRITICAL REPAIR STEP

STOP!
If multiple software update Campaign/Actions are
open, they must be performed in order of the Start
date . The oldest should be performed first.


All Safety Recalls must be completed prior to
completing this campaign.
Proceed to Section B

NOTE


Damages resulting from improper repair or failure to follow these work instructions are the dealer’s
responsibility and are not eligible for reimbursement under this action.



Diagnosis and repair of pre-existing conditions in the vehicle are not covered under this action.

The repair information in this document is intended for use only by skilled technicians who have the proper tools, equipment and training to correctly and safely maintain your vehicle. These
procedures are not intended to be attempted by “do-it-yourselfers,” and you should not assume this document applies to your vehicle, or that your vehicle has the condition described. To
determine whether this information applies, contact an authorized Audi dealer. 2023 Audi of America, Inc. and Audi Canada. All Rights Reserved.
February 2023

27K2 Page 5 of 9

Section B – Repair Procedure
NOTE
Prior to launching the VAS Diagnostic Tester and starting an update, ensure the following conditions are met;
The ODIS software is completely up to date.


Refer to the “Alerts” section on ServiceNet home page for the current ODIS version.

The battery charger is connected to the vehicle battery and remains connected for the duration of the
software update.


Battery voltage must remain above 12.5 volts for the duration of the software update. Failure to do
so may cause the update to fail, which could result in damage to the control module. Control modules
damaged by insufficient voltage will not be covered.

The screen saver and power saving settings are off.


Failure to do so may result in the tester entering power save mode during the software update, which
could result in damage to the control module.

The VAS Diagnostic Tester is plugged in using the supplied power adapters.


Under no circumstances should the tester be used on battery power alone during the software
update. Failure to do so may result in the tester powering off during the update, which could result
in damage to the control module.

Flash process through “Audi Flashing” not Guided Fault Finding (GFF).


DO NOT USE Guided Fault Finding (GFF) to perform this flash. Using GFF will cause the flash to
take longer. Requests for additional time will not be considered.

The VAS Diagnostics Interface MUST ONLY be connected to the tester with a USB cable.


Performing a software update using a Bluetooth or WiFi connection increases the risk of losing
connection during the update, which could result in damage to the control module.
It also greatly increases the time required to perform the update. Requests for additional time or
parts will be denied if the GFF log shows the update was performed using Bluetooth or WiFi.

NOTE


All campaign software updates must be completed during a single, standalone ODIS Diagnostic Session.
You must fully complete this campaign and send all logs before beginning any other campaigns or
operations.



If there are any ODIS “Hot-Fix” patches installed, they must be removed from the scan tool before beginning
this operation. ODIS “Hot-Fix” patches may affect the update process.

WARNING
Radiator Fan(s) may cycle ON high speed during the Update Process! There is a serious risk that personal injury
may result if contact is made with spinning fan blades. Keep hands and all objects away from Radiator Fan(s) during
Update Process!

The repair information in this document is intended for use only by skilled technicians who have the proper tools, equipment and training to correctly and safely maintain your vehicle. These
procedures are not intended to be attempted by “do-it-yourselfers,” and you should not assume this document applies to your vehicle, or that your vehicle has the condition described. To
determine whether this information applies, contact an authorized Audi dealer. 2023 Audi of America, Inc. and Audi Canada. All Rights Reserved.
February 2023

27K2 Page 6 of 9

IMPORTANT
To Update-Programming using SVM, review and follow instructions in Technical Bulletin 2011732: Software
Version Management (SVM) Operating Instructions.
The SVM Process must be completed in its entirety so the database receives the update confirmation response. A
warranty claim may not be reimbursed if there is no confirmation response to support the claim.
IMPORTANT
Service Action 93P9 must be performed before completing this software update.
CRITICAL REPAIR STEPS

STOP!
Before starting programming, it is essential to perform
the following actions for the -VAS5908- battery charger.
Switch it off and back on again. The battery charger’s default setting will switch the charger off automatically after a
period of time if it not switched off and back on.
The battery charger’s display must have switched off before it is restarted.
Operate it in charging mode.
Set it to a charging voltage of 14.8 Volt (access code 6161 may be necessary, or activate DIAG+ mode by pressing
and holding the select button if the charger has not been connected to the battery or has not been started). Refer to
the battery charger owner’s manual for further information. DO NOT change any settings that will damage the
charger or the vehicle.
If the software update is performed with an insufficient charging voltage, damage to one or more control units may
occur.
After the software update has been performed, the battery charger must be restored to the original voltage value.

The repair information in this document is intended for use only by skilled technicians who have the proper tools, equipment and training to correctly and safely maintain your vehicle. These
procedures are not intended to be attempted by “do-it-yourselfers,” and you should not assume this document applies to your vehicle, or that your vehicle has the condition described. To
determine whether this information applies, contact an authorized Audi dealer. 2023 Audi of America, Inc. and Audi Canada. All Rights Reserved.
February 2023

27K2 Page 7 of 9



Switch off all consumers, air conditioning, heater blower motor, lights, heated seats, etc.



Ensure the latest version of ODIS is downloaded.



Ensure diagnostic head is connected to ODIS tester via USB cable.



Only start software update when voltage is above 14V according to ODIS
tester.



Use operating mode, FLASH.



Select “SVM – Code Input”.



Ensure charger is set to charging voltage of 14.8V; voltage shown in
ODIS must be over 14V.



Enter SVM code 27K2A308 and follow the on screen prompts.



When exiting the FLASH program, ensure the diagnostic log is sent to GFF
Paperless.



After the software update has been performed, the battery charger must
be restored to the original voltage value.

After work is complete, Proceed to Section C

The repair information in this document is intended for use only by skilled technicians who have the proper tools, equipment and training to correctly and safely maintain your vehicle. These
procedures are not intended to be attempted by “do-it-yourselfers,” and you should not assume this document applies to your vehicle, or that your vehicle has the condition described. To
determine whether this information applies, contact an authorized Audi dealer. 2023 Audi of America, Inc. and Audi Canada. All Rights Reserved.
February 2023

27K2 Page 8 of 9

Section C – Campaign Stamp


Once the campaign has been completed, the
technician should stamp the repair order.



Stamps are available for ordering through the
Compliance Label Ordering Portal (item#
AUD4927ENG or AUD4927FRE).

Item#: AUD4927ENG
OR

Item # AUD4927FRE

The repair information in this document is intended for use only by skilled technicians who have the proper tools, equipment and training to correctly and safely maintain your vehicle. These
procedures are not intended to be attempted by “do-it-yourselfers,” and you should not assume this document applies to your vehicle, or that your vehicle has the condition described. To
determine whether this information applies, contact an authorized Audi dealer. 2023 Audi of America, Inc. and Audi Canada. All Rights Reserved.
February 2023

27K2 Page 9 of 9