Technical Service Bulletin
27 Battery: Vehicle's 12V battery is drained, documentation requirements before replacement
27 23 62 2069747/5 November 15, 2023. Supersedes Technical Service Bulletin Group 27 number 23-59 dated
September 8, 2023 for reasons listed below.
Model(s)

Year

All Audi Vehicles 2019 – 2025

VIN Range

Vehicle-Specific Equipment

All

Not Applicable

Condition
REVISION HISTORY
Revision Date

Purpose

5

-

Revised header (added MY25)

4

09/08/2023 Revised Condition (removed customer statement and generalized findings)

3

06/06/2023 Revised service (added info about transcription with ODIS)

Workshop findings:
• The 12V Battery has to be replaced for any reason.

Technical Background
In order to determine the root cause of the drained battery, additional information from the vehicle is required.

Production Solution
Not applicable.

Service
Please ensure that the battery is not drained due to an external influence:
• Keeping the ignition on for a prolonged amount of time.
• Parking the vehicle for a prolonged amount of time without a battery maintainer being attached (>90
days).
• Non-OEM accessories being attached to the vehicle that may use electrical power while the vehicle is
parked.

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intellectual property rights of Audi of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any time without notice. No part of this
document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, nor may
these materials be modified or reposted to other sites, without the prior expressed written permission of the publisher.

Technical Service Bulletin
• Replacement of drained or damaged batteries due to external influence is not applicable to warranty
and claims regarding such cases may be denied.

Please ensure that the vehicle batteries are at an acceptable state of charge when the vehicle arrives at
the service center.
• If the vehicle is parked for a prolonged amount of time (for example, waiting for parts), periodic (at
least monthly) checks should be performed regarding the battery’s state of charge.
• If the battery’s state of charge is below 80%, the battery should be recharged immediately.
Any time a 12V battery (A) needs to be replaced, the following procedure must be performed before installing the
new 12V battery (A):
Please connect a 12V battery charger.

In some cases, the battery may be too low to allow the battery charger to start up. In such cases, the
charger can be started by “jump starting” it by connecting jumper cables from a good battery to the
damaged battery for a moment while the charger is connected. (The jumper cables only have to be
touched to the poles as the vehicle charger needs to see an initial voltage to start up. They can be taken
off as soon as the vehicle charger starts charging.)
Please perform the following test plan in ODIS:

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All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and other
intellectual property rights of Audi of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any time without notice. No part of this
document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, nor may
these materials be modified or reposted to other sites, without the prior expressed written permission of the publisher.

Technical Service Bulletin
1. GFF >> 19 Diagnostics
interface for
databus >>
Guided Functions
>> Reading
history data.

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intellectual property rights of Audi of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any time without notice. No part of this
document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, nor may
these materials be modified or reposted to other sites, without the prior expressed written permission of the publisher.

Technical Service Bulletin
2. On the screen
“Format
selection”, select
option -1- Display
of the broken
down data with
the option to limit
the period.

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intellectual property rights of Audi of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any time without notice. No part of this
document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, nor may
these materials be modified or reposted to other sites, without the prior expressed written permission of the publisher.

Technical Service Bulletin
3. On the screen
“Structured data”,
enter
1,2,3,4,5,6,7,8
and then accept.

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intellectual property rights of Audi of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any time without notice. No part of this
document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, nor may
these materials be modified or reposted to other sites, without the prior expressed written permission of the publisher.

Technical Service Bulletin
4. On the next
screen
“Structured data”,
enter the amount
of days of history
data that should
be printed out.
Remark:
Selecting a range
that is too large
may cause the
test plan to fail. In
such a case, retry
with a smaller
range.

ODIS will now output the battery history data on the screen and store it to the GFF log.
For example, that data may help you to determine if the drained battery may be caused by misuse or external
influence, for example:
Section 5 – Energy critical conditions.
• Displays certain parameters when the vehicle wasn’t able to be started due to a low 12V battery, like if the
transmission was in Park during the time the vehicle was discharging the battery, if any lights were on during
that time, if the ignition was left on, etc.
Section 7 – Energy balance standing
• Displays the time and battery discharge that the vehicle was parked. According to the owner’s manual, the
customer is responsible to service (charge) the 12V battery after one month of the vehicle not being driven.
Should an entry here show a duration of last standing time of more than ~750h, combined with a large battery
discharge and under-voltage time under section 1, the battery may be defective due to an external influence.

Warranty
Please claim the GFF time required to perform this TSB on the claim requiring the battery replacement.

Additional Information
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All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and other
intellectual property rights of Audi of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any time without notice. No part of this
document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, nor may
these materials be modified or reposted to other sites, without the prior expressed written permission of the publisher.

Technical Service Bulletin
All parts and service references provided in this TSB (2069747) are subject to change and/or removal.
©2023 Audi of America, Inc. All rights reserved. The information contained in this document is based on the
latest information available at the time of printing and is subject to the copyright and other intellectual property
rights of Audi of America, Inc., its affiliated companies, and its licensors. All rights are reserved to make changes
at any time without notice. No part of this document may be reproduced, stored in a retrieval system, or
transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, nor may
these materials be modified or reposted to other sites without the prior expressed written permission of the
publisher.

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All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and other
intellectual property rights of Audi of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any time without notice. No part of this
document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, nor may
these materials be modified or reposted to other sites, without the prior expressed written permission of the publisher.