2024-2025 Audi MMI Software Update for Connectivity Issues

Audi has released Technical Service Bulletin (TSB) 2079671/1 to address a range of software-related issues affecting the Multi Media Interface (MMI) and connectivity box in certain 2024-2025 Audi vehicles equipped with the MIB3 system (version MLB G1 ST3BP with AED). This comprehensive software update aims to resolve various functionality complaints, including the critical "Emergency call fault" message that may appear in the instrument cluster.

This TSB, with a release date of October 14, 2025, outlines the necessary steps for technicians to update the infotainment system, ensuring proper operation of media, navigation, communication, and online services. Owners experiencing any of the described symptoms should contact an authorized Audi dealer to have their vehicle inspected and the software updated according to the procedures detailed in TSB 2079671/1.

Symptoms of MMI and Connectivity Issues

Owners of affected 2024-2025 Audi models may experience a variety of problems with their MMI and connectivity systems. These issues can manifest in several ways, impacting the overall infotainment experience and potentially critical safety functions. The reported symptoms include:

• Media Playback Functionality: Difficulties with playing audio or video, including interruptions, freezing, or complete failure of media playback.
• Navigation Mode Functionality: Problems with the navigation system, such as incorrect routing, slow map loading, or the system becoming unresponsive.
• Online Services Functionality: Inability to access or utilize Audi's online services, including traffic information, weather updates, or other connected features.
• Telephone Operation and Telephony Functionality: Issues with making or receiving calls, Bluetooth connectivity problems, or general malfunctions of the vehicle's telephone system.
• Screen Settings Functionality: Problems adjusting display settings, screen flickering, or the MMI screen becoming unresponsive to touch or input.
• Instrument Cluster, Displays, and Screens Functionality: Malfunctions affecting the visual output on the instrument cluster or other in-car displays.
• Audio Playback and Audio Settings Functionality: Distorted audio, inability to adjust volume or sound settings, or other audio-related anomalies.
• Controlling Infotainment with Buttons, Controls, Screen: Unresponsive physical buttons, rotary controllers, or touch screen inputs for the infotainment system.
• Radio, Navigation, MMI, and Drive Device Functions: General operational failures across multiple core MMI functions.
• Settings Functionality: Problems accessing or saving vehicle settings within the MMI system.
• Operation, Control, Speech Input: Malfunctions with voice commands or other control inputs.
• Malfunction Display Symbols: The appearance of interference display symbols, specifically an "Emergency call fault" message, in the instrument cluster, indicating a problem with the emergency call service.
• Audio, Video, Television Functionality: Broader issues affecting the vehicle's audio, video, or television capabilities.
• Infotainment System Operation with Multifunction Steering Wheel: Problems controlling the MMI system using the buttons and controls on the steering wheel.
• Radio Operation Functionality: Specific issues related to the vehicle's radio tuner.
• Telematics, Online Services Functionality: Further problems with the vehicle's telematics system and its associated online services.

These symptoms collectively point to underlying software instabilities within the MIB3 infotainment system, which TSB 2079671/1 aims to rectify.

Fault Codes and Diagnostic Addresses

While this TSB does not list specific Diagnostic Trouble Codes (DTCs) in the traditional P-code format, it references several diagnostic addresses and software versions crucial for identifying and resolving the issue. Technicians will typically look for the following:

• Diagnostic Address 005F - Information electronics 1: This is a primary diagnostic address where the affected software versions are found. Vehicles exhibiting the symptoms will likely have one of the following software versions installed in this module: 4014, 4026, 4318, or 4404.
• Diagnostic Address 0075 - Emergency call module: Diagnostic entries logged in this module are directly addressed by the software update. These entries are related to the "Emergency call fault" symptom.
• Diagnostic Address 0019 - Gateway: The hardware version of the gateway module is important for determining the correct SVM code chain to use during the update process. Specific SVM codes are provided for hardware versions H08 and H06.
• Android Control Unit (078E) Software Version: The TSB specifies that an update to the Android control unit (078E) should only be performed if its current software version is below 0621.

Diagnosis and Trigger Conditions

Diagnosis for the issues outlined in TSB 2079671/1 primarily involves verifying the customer's reported symptoms and checking the current software status of the vehicle's MIB3 system. A technician will perform the following diagnostic steps:

1. Customer Complaint Verification: Confirm that the owner is experiencing one or more of the described MMI or connectivity malfunctions, including the "Emergency call fault" message.
2. Software Version Check: Using diagnostic tools, the technician will check the software version installed in diagnostic address 005F (Information electronics 1). If the vehicle has software version 4014, 4026, 4318, or 4404, it is a candidate for this update.
3. Cross-Referencing with Other TSBs: The TSB notes that a different technical service bulletin might instruct technicians to refer to TSB 2079671/1 in the context of a broader software update involving multiple control units. This indicates that the MIB3 software update may be part of a larger service action.

The presence of these conditions confirms the need for the software update detailed in TSB 2079671/1.

Important Warnings for Owners

Audi has provided several critical warnings and advisories within TSB 2079671/1 that owners and technicians should be aware of before, during, and after the software update process:

• Do Not Perform Guided Fault Finding: For diagnostic entries logged in diagnostic address 0075, the Guided Fault Finding test plans should not be carried out. These entries will be resolved by the software update, and any attempts to invoice for these test plans are not permissible.
• Extended Inactive Time During Update: A significant period of inactive time is expected while the software update is in progress. Technicians are permitted to work on other vehicles during this time, and this is accounted for in warranty procedures.
• No Time Stamps for Warranty Billing: When performing this TSB, time stamps are not required for billing under warranty. This allows for flexibility in the service process.
• USB Stick Handling is Critical: It is absolutely crucial to leave the USB stick inserted until explicitly instructed to remove it. The procedure will only work if the USB stick remains connected throughout the specified steps.
• Interrupted Procedure: If the software update procedure is interrupted for any reason, it must be repeated from step 2. The test program is designed to automatically handle the missing parts of the update upon restart.
• No SD Cards: Owners and technicians must not use an SD card with an adapter USB stick for the update. Only proper USB-C sticks are to be used.
• FMC Invoicing Restriction: Downloading the software via the FMC (Flash Memory Card) and the use of the USB-C stick for this purpose cannot be invoiced separately.
• Specific Android Control Unit Update Condition: The update for the Android control unit (078E) should only be performed if its current software version is below 0621.
• Prepare USB-C Sticks in Advance: Technicians must prepare the required USB-C sticks with the correct software before beginning the repair. The update media can be used for multiple vehicles.

These warnings underscore the precise nature of the update process and aim to prevent errors, unnecessary charges, and ensure the successful resolution of the MMI issues.

Repair Procedure Summary

The repair procedure outlined in TSB 2079671/1 involves a multi-step software update process for the MIB3 infotainment system and related control units. This process requires specialized tools and careful adherence to instructions:

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

• Prerequisite Check: Technicians should skip this step if the Android control unit (078E) already has software version 0621 or higher.
• Accessing the Red Menu: The AED control unit can only be updated by accessing the red menu within the MMI system.
• USB Media Insertion: Insert the prepared USB update medium (containing the correct software part number) into the vehicle's USB connection.
• Initiating Update: Select the red menu by pressing the designated buttons and then choose "Update" from the source where the USB medium is inserted. The volume control is used to navigate and select options.
• Update Progress: All control units to be updated (AED) will be displayed. The technician scrolls down and initiates the update.
• Post-Update Actions: After the manual update is complete, the red menu must be exited entirely before starting a diagnostic session.
• MMI Restart and Initialization: The MMI system will restart. Technicians must wait until the MMI has fully initialized, and the home screen is complete with all apps displayed.
• System Restart: The system needs to be restarted by pressing and holding the volume control for 10 seconds.
• Notification Center Check: Open the notification center and switch to the "Audi connect notifications" tab. It may take several minutes for further information to appear, requiring patience.
• USB Stick Removal: Once the download is complete (approximately 5 minutes), the USB stick can be removed.
• Final System Restart: Restart the system again by pressing and holding the volume control.
• Verification: Check the notification center/Audi connect notifications to confirm the update was successful.

2. SVM Code for AED, Emergency Call Module (0075), Gateway (0019), and Information Electronics (005F)

• SVM Function Access: Use the "SVM - Multiple authorized code inputs" function in "Flash" mode.
• SVM Code Entry: The new software update program requires a specific SVM code chain to be entered exactly, including commas and without spaces. Scanning a QR code with a hand-held scanner or copying and pasting the SVM code chain is recommended.
• Hardware Version Determination: Determine the hardware version in diagnostic address 0019 using SVM code DUCIDENT0019 in the "SVM – Authorized Multiple Code Entry" function.
• Appropriate SVM Code Chain: Use the correct SVM code chain based on the determined hardware version of the gateway (0019). For hardware version H08, the SVM code chain is 078EA001,FLIGHTON0075MLB,ZGDOIP,CL3BPA001US,TGU1MDMVB,CL3BPA002US,FLIGHTOFF0075MLB. For all other hardware versions (e.g., H06), a different specific SVM code chain is provided.

3. Bus Sleep Mode

• Activation: After the software update, the vehicle must be put into bus sleep mode.
• MMI Reactivation: Switch the ignition back on and start the MMI.

4. Check Emergency Call LED

• Verification: Check if the emergency call LED in the roof module lights up green again. If it does not, refer to TSB 2079652, "Emergency call LED in roof module not lit up in green."

5. End Diagnostic Session

• Completion: End the diagnostic session and send off the diagnostic log online.

This detailed process ensures that all relevant modules are updated correctly, resolving the underlying software issues that cause the various MMI and connectivity problems, including the 2024 Audi A5 MMI software update.

Required Tools or Parts

Performing the software update described in TSB 2079671/1 requires specific tools and parts to ensure a successful and compliant repair:

• USB-C Stick: A USB-C stick with a minimum capacity of 32 GB and supporting USB 2.0 is required to download and transfer the software. It is crucial to use a USB-C stick of this specification, as larger capacity USB sticks may have different formatting processes that can cause issues.
• ODIS Software: The diagnostic tester used must have the latest ODIS update to ensure compatibility with the new test program for software updates.
• Software Part Numbers: The specific software update media will correspond to the vehicle type and current MIB3 software version. Examples of part numbers include:
  • 8W0906961DQ (for all models)
  • 8W0906961GC (for Audi A4, A5, Q5 with MIB3 SW versions 4014, 4026, 4404)
  • 8W0906961GG (for Audi A4, A5, Q5 with MIB3 SW version 4318)

It is important to note that the USB-C stick and the software download process via the FMC (Flash Memory Card) cannot be invoiced separately. Technicians should also refer to TSB 2060523, "91 MIB3: Software Update Instructions," for additional general information regarding MIB3 software updates.

Owner Action

If you own a 2024-2025 Audi A4, A5, or Q5 and are experiencing any of the MMI or connectivity issues described, including the "Emergency call fault" message, it is recommended that you contact your authorized Audi dealer. The software update outlined in TSB 2079671/1 is a complex procedure that requires specialized diagnostic equipment and training, and it cannot be performed by vehicle owners.

Since the TSB indicates a future release date of October 14, 2025, your dealer will be able to advise you on the current status of the update and schedule an appointment accordingly. While the update is typically covered under warranty, your dealer can confirm specific warranty implications based on your vehicle's status. Ensure you clearly describe all symptoms you are experiencing to help the technician accurately diagnose the problem and apply the correct 2024 Audi A5 MMI software update.

Warranty Information

Audi has provided specific instructions regarding warranty claims for this TSB. When carrying out TSB 2079671/1, time stamps are not required for billing under warranty. This allows for the update to be performed efficiently, even by non-productive personnel, and permits technicians to work on other vehicles during the software update's inactive period. All warranty claims must adhere to the Audi Warranty Policies and Procedures Manual, and claims are subject to review or audit by Audi Warranty. If the vehicle is outside of any warranty, this Technical Service Bulletin is informational only, and the owner may be responsible for the cost of the repair.

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Source: NHTSA ID: 11025295