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Technical Service Bulletin

90 Gateway software update: yellow battery warning lamp + POA1F00

United States 444 Volkswagen of America, Inc. (6444)

[Status | Released for publishing

Release date Aug 1, 2025

Diagnostic trouble codes

Diagnostic address Diagnostic trouble code Fault Storage

symptom state
0019 - Data Bus OBD POA1F00: Battery Energy Control Module "A" A
static

Interface Performance

New customer code

Object of complaint Complaint type [Position]
information, navigation, communication, entertainment -> information display functionality ->
symbols -> battery charge level information display activates
information, navigation, communication, entertainment -> warning display symbols - | functionality ->

> generator control warning display activates

information, navigation, communication, entertainment -> malfunction display functionality ->
symbols -> exterior lighting malfunction indicator activates

New workshop code

Object of complaint Complaint type [Position]
power, vehicle electrical system, data transfer -> power supply -> functionality -> no function

starter battery

power, vehicle electrical system, data transfer -> power supply -> functionality -> partially out of
starter battery order

Vehicle data

MLB evo ab KW48/2023 (ohne China CKD)

Sales types

Final drive code

aoa fT

aoa fT

aoa fT

gorsfa |

aera |

aoa |
aoa |
aoa |
aoa |
Control units

number version number version
0019 - Data Bus OBD * 3039 * Ho6
Interface
0019 - Data Bus OBD 0043 Hos
Interface
0019 - Data Bus OBD
0019 - Data Bus OBD
0019 - Data Bus OBD * 0054 * HO6
Interface
0019 - Data Bus OBD * 0042 Ho6
Interface
Documents

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Technical Service Bulletin Transaction No.: 2078806/1
90 Gateway software update: yellow battery warning lamp + POA1FO00 Release date: Aug 1, 2025
Condition
Customer states:
The customer complains that there is a yellow warning lamp in the instrument cluster (Figure 1) with a message
about a battery management fault (12V system).

A

\ at | f

y ‘all /
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AMS nee ee

a
MS a(n Ce a

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Figure 1. Yellow warning lamp.
The warning lamp disappears after switching the ignition off and then on again but may appear again.
Workshop findings:
The following DTC may be logged in data bus diagnostic interface J533 (DA00019):

+ POA1F00: Battery Energy Control Module Malfunction
Technical Background
Software issue in diagnostic interface control unit (DA0019).
Production Solution
Production change is scheduled for Q3/2025.
Service
This TSB replaces PSS 2076606: 90 PSS Yellow Battery Warning Lamp + POA1F00.
Software update to SW 0052 for the diagnostic interface control unit (DA0019):
Applies to vehicles with high-voltage components:

Applies to vehicles with high-voltage components:

— To prevent the high-voltage battery from charging during the following software update, the high
voltage charging cable on vehicles with high-voltage components must be unplugged BEFORE the
SVM code is entered.

— Please note that charging the high-voltage battery during a software update can cause damage to the
high-voltage components.

Please update the data bus diagnostic interface J533 (diagnostic address 0019) via SVM. To enter the SVM code,
use “Flash” mode on the ODIS tester.
Use the function “SVM - Authorized Multiple Code Entry”. The new test program for software updates is included
in ODIS software.
The vehicle uses acoustic signals and flashing lights to indicate when user input is required during and
at the end of the test program.
Use the function “SVM — Multiple authorised code inputs’ in “Flash” mode.
CAUTION: the following SVM code must be input exactly as written below (incl. commas and without spaces;
copying and pasting is recommended):
ZGDOIP,19A027,19B027
Follow the instructions on the ODIS tester.
After the update has been completed, it is absolutely necessary to unplug the diagnostic connector and the charger
from the vehicle.
Then start the engine/motor and let it run for a few minutes, then lock the vehicle and wait for five minutes.
Once you have done this, you can finish the diagnostic procedure via ODIS so that the event memory entry created
during the flashing procedure can be deleted.
Warranty
Claim Type: + Ifthe vehicle is outside of any warranty, this Technical Service Bulletin is
informational only.
Damage Code: 0039
Labor Operations: Software update 01510010 |See SRT with
associated
operations.
Software update 01510060 |Labor according to
the diagnostic log
Check vehicle (bus sleep mode) 06890199 |10TU
Claim Comment: As per TSB 2078806/1
All warranty claims submitted for payment must be in accordance with the Audi Warranty Policies and Procedures
Manual. Claims are subject to review or audit by Audi Warranty.
Additional Information
The software must be updated on a control unit in this vehicle, or the software must be updated on several control
units in this vehicle to ensure they function correctly in conjunction with the other control units in the vehicle. Please
inform the customer about the software update in question and ask whether they or other third parties have modified
the software (e.g. tuning or retrofitting involving modifications to the vehicle’s software). Please inform the customer
that this software update may neutralize previous modifications to the vehicle’s software performed either by the
customer or other third parties.
If the customer declines the software update, please inform them that this could lead to issues or restrictions with
the use of the vehicle or individual components.

Make a note to this effect on the order before it is signed by the customer. Include this information in the customer
file.

All part and service references provided in this TSB (20788806) 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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