2024-2026 Audi MIB3 Software Update for MMI Issues

Audi has issued Technical Service Bulletin (TSB) 2079680/1, released on October 14, 2025, to address various MMI functionality problems and the display of an "Emergency call fault" message in the instrument cluster of certain 2024-2026 Audi vehicles equipped with the MIB3 system (version MLB G2 ST3BP without AED). This TSB provides a comprehensive Audi MIB3 MMI software update designed to resolve these software-related issues, ensuring proper operation of the infotainment and connectivity systems.

This update is crucial for maintaining the full functionality of your vehicle's infotainment system and ensuring critical safety features like the emergency call service operate correctly. The new software was implemented in production for model year 2025 vehicles, but earlier models may require this update to correct existing malfunctions.

Symptoms

Owners of affected 2024-2026 Audi vehicles may experience a range of issues related to the MMI and connectivity box. The most prominent symptom is the display of an "Emergency call fault" message in the instrument cluster, often accompanied by "malfunction display symbols" or "interference display for emergency call service." Other reported problems, all categorized as functionality issues, include:

• Settings: Problems with MMI settings.
• Navigation Mode: Malfunctions in navigation mode operation.
• Radio Operation: Issues with radio functionality.
• Infotainment Control: Difficulties controlling infotainment features using buttons, controls, or the screen.
• Speech Input: Problems with operation, control, or speech input functions.
• Online Services: Malfunctions with Online Services.
• Telephone Operation: Issues with telephone functionality.
• Telematics/Online Services: Problems specifically related to Telematics and online services.
• Audio Playback/Settings: Malfunctions with audio playback or audio settings.
• Radio, Navigation, MMI, and Drive Device Functions: General issues affecting these core infotainment components.
• Telephony: Specific problems related to telephony functions.
• Media Playback: Malfunctions during media playback.
• Audio, Video, Television: Issues with audio, video, or television functions.
• Instrument Cluster, Displays, Screens: Problems affecting the instrument cluster, various displays, and screens.
• Infotainment System Operation with Multifunction Steering Wheel: Malfunctions when operating the infotainment system using the multifunction steering wheel.
• Screen Settings: Issues with screen settings.

Diagnosis and Trigger Conditions

Technicians can identify vehicles requiring this Audi MIB3 MMI software update by checking the software version in diagnostic address 5F, which corresponds to the Information electronics control unit. Vehicles still exhibiting the described issues will typically have one of the following software versions:

• Software version 4014
• Software version 4026
• Software version 4318
• Software version 4404

These specific software versions indicate that the vehicle's MIB3 system is running an older iteration that is prone to the described malfunctions. The presence of these versions in diagnostic address 5F confirms the need for the update.

Important Warnings and What Owners Should Know

Audi has provided several critical advisories for this service action, TSB 2079680/1, to ensure proper procedure and warranty compliance:

• Do Not Perform Guided Fault Finding for Diagnostic Address 0075: "Diagnostic entries logged in diagnostic address 0075 will be repaired by a software update described in this TPI. The Guided Fault Finding test plans should not be carried out and cannot be invoiced." This prevents unnecessary diagnostic work and costs.
• Warranty Billing for Inactive Periods: "There will be extended inactive periods for some of the steps. You can work on a different vehicle during this time. This is considered in the warranty accounting instructions." This allows for efficient workshop management without affecting warranty claims.
• No Time Stamps Required for Warranty Billing: "When carrying out this TSB, time stamps are not required for billing under warranty." This simplifies the warranty claim process for this specific update.
• USB-C Stick Requirement: "Important: Please prepare the required USB-C sticks (see parts information) before starting the repair. The update media can be used for multiple vehicles." Furthermore, "You must not use an SD card with an adapter USB stick." and "The USB-C stick and downloading the software via the SD creator cannot be invoiced." This emphasizes the specific media requirements and billing restrictions.
• Procedure Interruption: "Note: If the procedure has been interrupted, please repeat step 1. The test program will then automatically perform the missing part of the update." This ensures the update completes correctly even if there are interruptions.
• Informational Only if Out of Warranty: "If the vehicle is outside of any warranty, this Technical Service Bulletin is informational only." This means that for vehicles no longer under warranty, the owner may be responsible for the cost of the update.

Repair Procedure Summary

The repair involves a multi-step software update using specific tools and procedures outlined in TSB 2079680/1. The process is designed to update the emergency call module (0075), gateway (0019), and information electronics (005F).

1. Software Update for Key Modules: The primary step is to update the software for the emergency call module (0075), gateway (0019), and information electronics (005F). Technicians must first determine the current software version in diagnostic address 0019 using SVM code DUCIDENT0019 (SVM - Authorized Multiple Code Entry). Depending on the detected software version, a specific SVM code chain will be used. For example, if the software version in diagnostic address 0019 is 0051, the SVM code chain to be used is "FLIGHTON0075MLB,ZGDOIP,CL3BPA001US,TGU1MDMVB,CL3BPA002US,FLIGHTOFF0075MLB". For all other versions in diagnostic address 0019, the chain is "FLIGHTON0075MLB,ZGDOIP,CL3BPA001US,19A027,19B027,TGU1MDMVB,CL3BPA002US,FLIGHTOFF0075MLB". The test program will prompt the technician to insert a USB medium containing the update software. The automatic execution of software updates may result in inactive time, which is accounted for in warranty instructions. The USB-C stick can be removed after the program completes.
2. Bus Sleep Mode: After the software update is complete, the vehicle must be put into bus sleep mode. This involves turning off the ignition. Following this, the ignition is switched back on, and the MMI system is started.
3. Check Emergency Call LED: The technician must verify that the emergency call LED in the roof module lights up green again. If the LED does not turn green, further diagnosis is required, referencing TSB 2079652, "Emergency call LED in roof module not lit up in green."
4. End Diagnostic Session: Finally, the diagnostic session is concluded, and the diagnostic log is sent online to complete the process.

This Audi MIB3 MMI software update is designed to be comprehensive, addressing all underlying software issues.

Required Tools or Parts

Performing this Audi MIB3 MMI software update requires specific media and tools:

• USB-C Sticks: Technicians must prepare the required USB-C sticks with a minimum capacity of 32 GB. It is important not to use USB-C sticks with larger storage capacities, as they may have different formatting processes. General information on suitable USB-C sticks can be found in TSB 2060523, "91 MIB3: Software Update Instructions."
• ODIS Update: The diagnostic tester used for the update must have the latest ODIS software version, as a newly developed test program is used to input the SVM code.
• Software Part Numbers: The software for the MIB3 update is downloaded onto the USB-C stick using specific part numbers, depending on the vehicle's current software version:
  • 8W0906961GB: For vehicles with existing software versions 4014, 4026, or 4404.
  • 8W0906961GF: For vehicles with existing software version 4318.

Warranty Information

Audi provides specific guidelines for warranty claims related to TSB 2079680/1:

• Claim Type: Complaints about emergency call function or online services are covered under Service Number 9145. Complaints about MMI functions are covered under Service Number/Damage Code 9196.
• Damage Code: The specific damage code for this issue is 0041.
• Labor Operations:
  • Prepare repair: Labor operation 0151 0010, allocated 20 Time Units (TU). This includes parking the vehicle and charging the 12V battery.
  • Launch software update for MMI and emergency call module: Labor operation 0151 0040, allocated 60 TU. This covers connecting the tester, starting ODIS, flash mode, using the Authorized Multiple Code Entry function, copying/pasting the code chain, inserting the USB stick, and allowing the program to run automatically.
• Claim Comment: All claims should include the comment "As per TSB 2079680/1".

All warranty claims must adhere to the Audi Warranty Policies and Procedures Manual and are subject to review by Audi Warranty.

Owner Action

If your 2024-2026 Audi is experiencing any of the described MMI issues or displaying an "Emergency call fault" message, you should contact your authorized Audi dealership. They will be able to diagnose the specific software version in your vehicle's MIB3 system and perform the necessary Audi MIB3 MMI software update as outlined in TSB 2079680/1. This update is typically covered under warranty if your vehicle is within the warranty period.

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Source: NHTSA ID: 11025296