A2723522069747_2

Technical Service Bulletin
27 Battery: Vehicle's 12V battery is drained, documentation requirements before replacement
27 23 52 2069747/2 April 13, 2023. Supersedes Technical Service Bulletin Group 27 number 23-48 dated March
23, 2023, for reasons listed below.
Model(s)
Year
VIN Range
Vehicle-Specific Equipment
All Audi Vehicles
2019 - 2024
All
Not Applicable
Condition
REVISION HISTORY
Revision
Date
Purpose
2
-
Revised service (removed method 1)
1
03/23/2023
Initial publication
Customer states:
•
The vehicle doesn’t start due to a drained 12V battery (A).
• The ignition in the vehicle can’t be turned on due to a drained 12V battery (A).
Workshop findings:
• Multiple low voltage DTCs are stored throughout the vehicle.
• The vehicle’s 12V battery (A) tests as defective using the GRX-3000 tool.
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 make sure that the battery is not drained due to 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
Page 1 of 2
© 2023 Audi of America, Inc.
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
use electrical power while the vehicle is parked. - Replacement of drained or damaged batteries due to
external influence is not applicable to warranty and claims regarding such cases may be denied.
Please make sure that vehicle batteries are at an acceptable state of charge when the vehicle arrives at
the service center. If a 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 “jumpstarting” it by connecting jumper cables from a good battery to the damaged
battery for a moment while the charger is connected.
Please perform the following test plan in ODIS:
GFF -> 19 - Diagnostics interface for databus -> Guided Functions -> Reading history data, then select Option 1
(all).
Once the data is read please upload the GFF log to paperless.
Warranty
Please claim the GFF time required to perform this TSB on the claim requiring the battery replacement.
Additional Information
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.
Page 2 of 2
© 2023 Audi of America, Inc.
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.