2023-2025 Audi MMI Connectivity Box Software Update

Audi has released Technical Service Bulletin (TSB) 2079681/3 to address software-related issues affecting the Multi Media Interface (MMI) and connectivity box in certain 2023-2025 Audi vehicles equipped with the MIB3 system. This bulletin, identified as 2079681/3, provides a comprehensive software update designed to resolve common complaints such as MMI malfunctions and specific error messages displayed to the driver.

This update is particularly relevant for owners of models like the 2024 Audi Q8 MMI software update, which may be experiencing intermittent connectivity problems or system glitches. The TSB outlines a detailed procedure for authorized service technicians to update the necessary control units, ensuring proper functionality of the infotainment and communication systems.

Symptoms

Owners may notice several issues that indicate their vehicle requires this software update. The most common symptom reported by customers is experiencing problems with various MMI functions. This can manifest as slow response times, freezing, or general unresponsiveness of the infotainment system.

Another specific warning message that drivers might see displayed in the instrument cluster is an "Emergency call fault". This message indicates a potential issue with the vehicle's emergency call system, which is a critical safety feature. Vehicles requiring this update are typically found to have specific older software versions in diagnostic address 5F, such as 4014, 4026, 4318, or 4404.

Diagnosis and Trigger Conditions

Technicians will diagnose the need for this update by checking the software versions present in the vehicle's control units. The primary indicator is the presence of specific software versions (4014, 4026, 4318, 4404) within diagnostic address 5F. Additionally, the Android control unit (078E) may have a software version below 0621, which also necessitates this update.

This update addresses underlying software issues that can lead to the observed MMI malfunctions and the "Emergency call fault". The TSB specifies that diagnostic entries logged in diagnostic address 0075 will be resolved by performing this software update, eliminating the need for separate Guided Fault Finding test plans for these specific entries.

Important Warnings and Owner Advisories

Audi has provided several critical advisories within TSB 2079681/3 that owners and technicians should be aware of before and during the software update process:

• "Diagnostic entries logged in diagnostic address 0075 will be repaired by a software update described in this TSB. The Guided Fault Finding test plans should not be carried out and cannot be invoiced."
• "A lengthy period of inactive time is to be expected during the software update. You can work on a different vehicle during this time. This is considered in the warranty accounting instructions."
• "When carrying out this TSB, time stamps are not required for billing under warranty."
• "Please make absolutely sure to leave the USB stick inserted. The correct time to remove the USB stick is described further down."
• "Please note: This procedure will only work if the USB stick is still inserted."
• "Do not use an SD card with an adapter USB stick."
• "Please do not use a USB-C stick with a larger storage capacity as these types of USB sticks have a different formatting process."
• "The Guided Fault Finding test plans should not be carried out for diagnostic entries that are repaired by performing this TSB and cannot be invoiced."
• "The USB-C stick and downloading the software via FMC cannot be invoiced."

These warnings highlight the specific nature of the repair, warranty considerations, and crucial steps for ensuring a successful update. Owners should be aware that the update process can take a significant amount of time.

Repair Procedure Summary

The repair procedure outlined in TSB 2079681/3 involves a two-part software update process for the affected control units. This ensures that both the MMI's core functions and critical safety systems like the emergency call module receive the necessary updates.

1. Manual Software Update for AED Control Unit (078E)

This initial step focuses on updating the Android control unit (078E) via the MMI's red menu. Technicians must first prepare two specific USB-C sticks containing the required software. If the Android control unit's software version is already 0621 or higher, this step can be skipped.

• Preparation: Insert the USB update medium into the USB connection. Ensure the vehicle's 12V battery is charged and maintained.
• Accessing the Red Menu: Technicians access the red menu in the MMI by pressing a specific combination of buttons (as depicted in the TSB, typically involving the NAV/MAP and RADIO buttons).
• Initiating Update: From the red menu, select "Update" and choose the USB connection as the source. The system will display all control units to be updated. Technicians must scroll down and start the update process.
• Post-Update Steps: After the manual update is successfully completed, the MMI will restart. It's crucial to leave the USB stick inserted during this phase. The MMI home screen must fully initialize and display all apps. The system then needs to be restarted by pressing and holding the volume control for 10 seconds. Technicians will then open the notification center and switch to the "Audi connect notifications" tab, waiting for further information to appear. This procedure relies on the USB stick remaining inserted until the download is complete (approximately 5 minutes). Only then should the USB stick be removed.

2. SVM Code Update for Multiple Control Units

The second part of the update involves using a specific SVM code to update the emergency call module (0075), gateway (0019), and information electronics (005F). This is performed using the "SVM - Authorized Multiple Code Entry" function in ODIS "Flash" mode.

• SVM Code Entry: Technicians must accurately enter the provided SVM code: 078EA001,DUCDTCPR0075MLB,FLIGHTON0075MLB,ZGDOIP,CL3BPA001US,19A027,19B027,TGU1MDMVB,CL3BPA002US,FLIGHTOFF0075MLB. The TSB recommends scanning a QR code or copying and pasting the code to avoid errors.
• Program Execution: Once the SVM code is entered, the program runs automatically to update the specified modules.

Post-Repair Checks

After completing the software updates, technicians must perform several checks:

• Bus Sleep Mode: Put the vehicle into bus sleep mode, then switch the ignition back on and start the MMI.
• Emergency Call LED: Verify that the emergency call LED in the roof module illuminates green. If it does not, further troubleshooting may be required, potentially referencing TSB 2079652 for issues with the "emergency call LED in roof module not lit up in green."
• Diagnostic Session: End the diagnostic session and send the diagnostic log online.

This comprehensive process ensures that all affected control units receive the necessary software improvements, addressing the MMI and connectivity box issues, including the "Emergency call fault" for models like the 2024 Audi Q8 MMI software update.

Required Tools and Parts

Performing the software update described in TSB 2079681/3 requires specific tools and media:

• USB-C Sticks: Two USB-C sticks are required. It is critical not to use SD cards with adapters or USB-C sticks with larger storage capacities, as these may have incompatible formatting processes.
• ODIS Software: The diagnostic tester used must have the latest ODIS update to ensure compatibility with the new test program for software updates.
• AED Control Unit Update Media Part Number: 8W0906961DQ (for all models).
• MIB3 Update Media Part Numbers:
  • 8W0906961GB (for MIB3 SW versions 4014, 4026, 4404)
  • 8W0906961GF (for MIB3 SW version 4318)

These specific part numbers ensure that the correct software versions are applied to the respective control units.

Owner Action

If you own a 2023-2025 Audi Q7, SQ7, Q8, SQ8, RS Q8, A6, A6 allroad, S6, RS 6 Avant, A7, S7, RS 7, A8, or S8 and are experiencing issues with your MMI functions or seeing an "Emergency call fault" message, it is recommended to contact your authorized Audi dealer. Reference Technical Service Bulletin 2079681/3 when discussing the issue with your service advisor.

The software update described in this TSB is typically covered under warranty if your vehicle meets the eligibility criteria. The dealer will be able to diagnose the specific software versions in your vehicle and perform the necessary updates to restore full functionality to your MMI and connectivity box systems.

Source: NHTSA TSB ID 11028440.