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Technical Service Bulletin Transaction No.: 2080398/2
00 Combined software update ID.S 5.4.3 for Audi Q4 Release date: Feb 9, 2026
Condition
Model(s) Year(s) VIN Range Vehicle Specific Equipment
PR codes:
V7A, V7B, or V7C, or V7E
Diagnostic Address:
O005F 0075
Software Versions:
Q4 e-tron, and a4 Sportback e- 2024 — 2026 All

4139

4141 0088

4145 0100

4147 0288

4319 0554

4325
REVISION HISTORY
Revision | Date Purpose
2 - Revised Service (Update directions)
1 01/13/2026 | Initial publication

The following TSB describes the specific flashing procedure that must be used on the vehicle.

Technical Background

Software issue.

Production Solution
From week 5/2025.

Service
Applies to vehicles with high-voltage components:

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 high-voltage equipment may be damaged if the high-voltage battery is charged during a software update.
Updating control units

Important

- Connect battery charger unit in accordance with specifications in “Standards for workshop equipment’.

- Switch off electrical equipment (blower, seat heater, lights, etc.).

- Move selector lever to P.

- Leave the vehicle (no person or object may be on the driver seat or front passenger seat)

(@note

We strongly recommend flashing using a USB cable. This ensures that data transmission is as reliable as possible.
Infrastructure mode is not permissible as it is very prone to interference/errors.

- Connect the diagnostic tester via USB to the vehicle. Do not run the cable through the open window, but instead through the open door as the electric windows will be
operated automatically during the update without the roll-back function.

Diagnostic tester version 2.39.10 or later is absolutely essential.

- Place a (only one) vehicle key on the reader coil.

- Select “Diagnosis” to start the tester.

SVM - Authorized Multiple Code Entry (when copying and pasting the SVM code, make sure there is no line break or scan the QR code)
DUC12VBREAD,ME543MIB,ZGDOIP,ME543DOIP,ME543S TEP2DOIP,ME543ICASDOIP,ME543ICASAPPDOIP,ZGCAN,ME543REST,DUCSICH0015,ME543AIR, DUCPK1MES¢
QR code:

- The battery data from the 12V battery are read out automatically. Copy or print information window.

(@note

The image of the information window is just an example

Aktion: Meldung
Ausgelesene Daten zur Batterie -A:

Kapazitat = 49 Ah

Herstellercode / Hersteller-Kurzbezeichnung = VAO
Seriennummer = 4401240207
Batterie-Technologie = EFB+

Alter der Batterie in Tagen = 561

- Insert the USB stick specified by the diagnostic tester.

¢ — If the instruction to remove the fuse (7.5 A, brown) for airbag control unit J234 is shown, follow the instructions on the tester. Refer to the image to see the fuse location

(-2-).

© Caution!

Airbag control unit J234 does not need to be replaced.

The airbag control unit J234 is only replaced virtually in the following steps.

(@note

The virtual airbag control unit J234 is to be replaced.

Which control unit is currently fitted? => -1- Old control unit

SVM. porrpinte Uetrtacn Codeangate / as
Abbege Auagangi susie

Weiches Steuergerat ist om Moment eingebaut?

Is the new control unit ready to be installed? => Yes

SVM - Autotisierte Mehrtach Codesingabe

Ablrage Ausgangssiuation

Nels
Ist das newe Stevergerat schon einbaubereit vorhanden?

Do you want to update the event memory you have read out? => Yes

SVM - Aulorisierte Mehdach Codeaingabe

Ereignisapeicher auslesen

Méchton Sio dio boim Einstieg in die Getitrte Fehlorsucho ausg

on Erignis:

[J ] Die Exetanisspeicher im Falrzeug konnen sich seit dem Binstieg in die Gefulute Fehlersuche durch Arbelien am Fahrreug
geandert haben!

Do you still want to replace the airbag control unit J234? => Yes

SV Asciets Melac Comehaba

Glatusmeldung Aitsteuvergeraet

Es ie! kein Ereignis singetrapen, das einen Steuengeratetauach erfordert
Wollen sie das folgende Stevergerat trotzdem ersetzen?

0015 - Stavergerst fiir Airbag J224

Have you installed the control unit? => Yes

(ioherenecen a =a

Dialog Start inbetriebnahme

Haben Sie das Steuergerit eingebaut?

- When quitting the program, send flash log (online).
¢ Adapt/calibrate the power steering if required by the tester.
* Perform seat adaptations as per the test plan if required by the tester.

- Aroad test/adaptation drive at a speed over 40 km/h is absolutely required after the software update has been performed.
- Erase event memory.

- Continue working through the test plan.

- Check that LED on emergency call module is green.

- On vehicles with camera systems: shift to R and check camera image.

Alicense, activation code and PIN are required to reactivate the control units on vehicles equipped with PR number V7A after the software update. To receive this
information, please send an email to svm-bot@audi.de with the subject “Q4 activation code”

Warranty

Please do not bill repairs under this TSB. This TSB is for reference only, billing info can be found in the relevant TSB for the software update instructions.

Required Parts and Tools

Create the required USB stick using FMC (successor of SD Creator).

After the SVM code is entered, the diagnostic tester issues the part number for the USB stick to be created.

The workshop process can be supported by preparing the suitable USB stick prior to beginning work using the supporting document: USB_Stick_MIB3.
The attached document provides support when creating the USB stick.

Only use the USB stick requested by the diagnostic tester.

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 (2080398) 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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