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Technical Service Bulletin

Topic 91 Charging target cannot be adjusted in MMI

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

Brand Audi

Transaction No. | 2077780/2

Level EH

Status Released for publishing

Release date Jun 2, 2025

New customer code

Object of complaint Complaint type Position
power, vehicle electrical system, data transfer -> battery control modules, services ->
management -> charging high-voltage battery service unavailable
power, vehicle electrical system, data transfer -> battery . ay
management -> charging high-voltage battery functionality -> faulty
power, vehicle electrical system, data transfer -> battery . yy .
management -> charging high-voltage battery functionality -> no function
power, vehicle electrical system, data transfer -> battery functionality -> operation
management -> charging high-voltage battery sequence incorrect
power, vehicle electrical system, data transfer -> battery functionality -> switches on by
management -> charging high-voltage battery itself
New workshop code
Object of complaint Complaint type Position
power, vehicle electrical system, data transfer -> battery management -> functionality > faulty
charging high-voltage battery
power, vehicle electrical system, data transfer -> battery management -> : ty, > miefi
charging high-voltage battery functionality -> misfire
information, navigation, communication, entertainment -> instrument . . .
. functionality -> no function front
cluster, displays, screens -> MMI screen
information, navigation, communication, entertainment -> instrument . .
. functionality -> faulty front
cluster, displays, screens -> MMI screen
information, navigation, communication, entertainment -> instrument control modules, services -> front

cluster, displays, screens -> MMI screen

software faulty

Vehicle data
Audi Q4

Sales types

Type|MY |Brand| Designation | Engine code |Gearbox code | Final drive code

F4* |2022)A * * *

Type|MY |Brand|Designation| Engine code |Gearbox code | Final drive code
F4* |2023/A * * *

F4* |2024/A * * *

F4* |2025/A * * *
Documents

Document name

master.xml

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Technical Service Bulletin Transaction No.: 2077780/2
91 Charging target cannot be adjusted in MMI Release date: Jun 2, 2025
Condition

REVISION HISTORY

Revision | Date Purpose

2 - Revised header (Updated workshop codes)

Revised Warramty (Updated labor operations)

1 04/28/2025 | Initial publication

Customer statement:

* The customer complains that the charging target setting cannot be adjusted (Figure 1).

=) 80.5%

Figure 1. Charge target setting in the MMI.

* — In the context of the issue that the charging target cannot be set, an error message appears in the myAudi app
(Figure 2) indicating that the set charging target cannot be sent.

Could not send the
desired target
charge

An unknown error has occurred

Error: R:F4127-E:BFF.4105
(250225175625)

Try again

Close

Figure 2. Screenshot from app: “The desired charging target could not be sent. An unknown error has occurred.”

The charging timers also cannot be set in the app or on the MMI.

Workshop findings:

The customer complaint can be reproduced; the charging target is set at 84% and cannot be adjusted.

The adjustment options with a plus symbol / minus symbol / red dot are not displayed.
* An error message appears in the myAudi app indicating that the charging target cannot be sent.

e« — The charging timers cannot be set in the app or on the MMI.

Technical Background

Software issue in diagnostic interface control unit (DA0019).

Production Solution

Not applicable.

Service

This bulletin replaces Pending Service Solution (PSS) 2076055: 91 PSS MIB3: Charging target cannot be adjusted
in the MMI.

Applies to vehicles with high-voltage components:

Ay caution

To prevent the high-voltage battery from charging during the 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.

Note:

The software for the diagnostic interface must be updated on this vehicle. Please observe the information and
instructions under “Customer information’.

Please perform the following steps using an ODIS tester. To enter the SVM codes, use “Flash” mode and the
subsequent “SVM code input” test plan on the ODIS tester. The SVM codes required for this are 19A028 and
19B028.

IMPORTANT: The two SVM codes must be run one after the other. Please perform the steps below in the
specified order.

1. Perform the following steps:

Run SVM code 19A028. (Ensure this step completes BEFORE proceeding)
Switch the ignition off and on again.

Run SVM code 19B028.

Wait for the vehicle to enter bus sleep mode.

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Reassess the complaint.

Warranty

Claim Type: * If the vehicle is outside of any warranty, this Technical Service Bulletin is
informational only.

Service Number: 9035

Damage Code: 0039

Labor Operations: Software update 0151 0010 |See SRT with
associated
operations

Software update 0151 0060 | Time stated on the
diagnostic protocol

Check vehicle (bus sleep mode) 0689 0199 |10 TU

Check infotainment control unit 9196 0199 |5TU

Claim Comment: As per TSB 2077780/2

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

All part and service references provided in this TSB (2077780) 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.

©2025 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
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