2024-2025 Audi MMI and Emergency Call System Software Update

Audi Technical Service Bulletin (TSB) 2079813/3 details a software update designed to resolve various issues with the Multi Media Interface (MMI) and the emergency call system in certain 2024-2025 Audi models. This update specifically targets MIB3 vehicles, aiming to fix problems that can lead to a "Connection offline" message or an "Emergency call fault" display in the instrument cluster.

The TSB, last revised on March 27, 2026, focuses on improving the stability and functionality of the MMI and connectivity box, particularly for vehicles equipped with MIB3 systems. Owners experiencing an "Audi MMI emergency call fault" or other MMI functionality issues should be aware of this important software remedy.

Symptoms

Owners may notice several indicators that their vehicle is affected by the issues addressed in TSB 2079813/3. The primary symptoms include:

• "Connection offline" message.
• Problems with various MMI functions.
• "Emergency call fault" displayed in the instrument cluster.

These symptoms are typically linked to software issues within the MMI and emergency call module.

Technical Background

The root cause of the MMI and emergency call system malfunctions is identified as software issues. A new software version has been implemented in production vehicles to prevent these problems in newer models. For existing vehicles, a software update is required to address the underlying software defects in the emergency call module (diagnostic address 0075) and information electronics (diagnostic address 005F).

Important Warnings for Owners

Audi has provided several key advisories for technicians and owners regarding this software update:

• Do not replace parts unnecessarily: Diagnostic entries logged in diagnostic address 0075 will be resolved by the software update. Guided Fault Finding test plans for these entries should not be performed or invoiced, as they will not resolve the issue.
• Extended inactive periods: The software update process involves extended periods where the vehicle will be inactive. This is normal and accounted for in warranty procedures.
• Billing for warranty work: Time stamps are not required for billing under warranty when performing this TSB. Technicians are permitted to work on other vehicles during the inactive periods of the update.
• Required tools: The update requires specific USB-C sticks. Owners should ensure their service center uses the correct media. It is crucial not to use an SD card with an adapter USB stick or a USB-C stick with a larger storage capacity than 32 GB, as these may have different formatting processes and cause issues.
• No notification: While not explicitly stated, owners are generally not individually notified for TSBs, unlike recalls. If you are experiencing an "Audi MMI emergency call fault" or related MMI issues, you should proactively contact your dealership.
• Emergency Call LED: After the update, check if the emergency call LED in the roof module lights up green. If it does not, refer to TSB 2079652, "Emergency call LED in roof module not lit up in green."

Repair Procedure Summary

The repair for the "Audi MMI emergency call fault" involves a software update for the emergency call module (0075) and information electronics (005F). The procedure is as follows:

1. Preparation: The vehicle must be parked, and the 12V battery charged. Technicians prepare the required USB-C sticks with the correct software part numbers (8W0906961GC for SW 4014, 4026, 4404; 8W0906961GG for SW 4318).
2. Software Update Launch: Connect a diagnostic tester with the latest ODIS update. Launch the software update in "Flash" mode.
3. SVM Code Entry: Use the "SVM - Authorized Multiple Code Entry" function. The technician must accurately enter the following SVM code chain, preferably by scanning a QR code or copying and pasting: DUCDTCPR0075MLB,FLIGHTON0075MLB,ZGDOIP,CL3BPA001US,TGU1MDMVB,CL3BPA002US,FLIGHTOFF0075MLB.
4. USB Stick Insertion: Insert the prepared USB-C stick into the vehicle.
5. Automatic Program Execution: The update program will run automatically. The vehicle will use acoustic signals and flashing lights to indicate required user input.
6. Bus Sleep Mode: After the software update is complete, put the vehicle into bus sleep mode. Then, switch the ignition back on and start the MMI.
7. Check Emergency Call LED: Verify that the emergency call LED in the roof module lights up green. If it does not, further diagnosis using TSB 2079652 may be required.
8. Final Steps: Conclude the diagnostic session, remove the USB stick, and disconnect the charger.

This update also includes new software for the MIB3 infotainment system. Further information on MIB3 software updates can be found in TSB 2060523, "91 MIB3: Software Update Instructions."

Required Tools or Parts

To perform this software update, specific items are needed:

• USB-C Sticks: Minimum 32 GB capacity. It is critical not to use USB-C sticks with larger capacities due to potential formatting issues, and SD cards with adapters are explicitly prohibited.
• Software Part Numbers: The software images to be loaded onto the USB-C sticks are identified by part numbers:
  • 8W0906961GC for MIB3 SW versions 4014, 4026, 4404 (for Audi A4, A5, Q5)
  • 8W0906961GG for MIB3 SW version 4318 (for Audi A4, A5, Q5)

Warranty Information

This software update is covered under warranty if the vehicle is still within its warranty period. For claims, service centers should use the following information:

• Service Number 9145: For complaints related to emergency call function or online services, applicable to A4, A5, and Q5 models.
• Service Number 9196: For complaints related to MMI functions.
• Damage Code 0041: To be used in combination with the appropriate service number for billing.

If the vehicle is outside of warranty, this Technical Service Bulletin serves as informational guidance for diagnosis and repair.

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Source: NHTSA ID: 11031017