2023-2025 Audi MMI Emergency Call Fault Software Update

Audi has issued Technical Service Bulletin (TSB) 2079680/3 to address various MMI function problems and the display of an "Emergency call fault" message in the instrument cluster of certain 2023-2025 Audi models. This bulletin provides a software update for the MMI and connectivity box in MIB3 vehicles, aiming to resolve these connectivity and system issues.

Symptoms of the Audi MMI Emergency Call Fault

Owners of affected Audi vehicles may experience several issues related to the MMI system. The most prominent symptom is the display of an "Emergency call fault" message in the instrument cluster. Additionally, drivers might notice general problems with various MMI functions or a "Connection offline" status.

Diagnosis and Trigger Conditions

This issue is typically identified in vehicles that have specific software versions installed in diagnostic address 5F. These problematic software versions include 4014, 4404, 4026, and 4318. The TSB also notes that diagnostic entries logged in diagnostic address 0075 are related to this problem.

Important Warnings for Owners

Audi has provided crucial information regarding this TSB that owners should be aware of:

• Do not carry out Guided Fault Finding test plans for diagnostic entries logged in diagnostic address 0075. These entries will be repaired by the software update described in this TSB and cannot be invoiced separately.
• You must not use an SD card with an adapter USB stick when preparing the update media.
• Do not use a USB-C stick with a larger storage capacity than specified (minimum 32 GB), as these types of USB sticks have a different formatting process that can cause issues.

Repair Procedure Summary

The repair for the Audi MMI Emergency Call Fault involves a software update for the emergency call module (0075), gateway (0019), and information electronics (005F). This update is performed using the "SVM - Authorized Multiple Code Entry" function in "Flash" mode via the ODIS diagnostic system.

Technicians must precisely enter a specific SVM code chain: DUCDTCPR0075MLB, FLIGHTON0075MLB, ZGDOIP, CL3BPA001US, 19A027, 19B027, TGU1MDMVB, CL3BPA002US, FLIGHTOFF0075MLB. The process requires preparing USB-C sticks with the update media. After the software update is complete, the vehicle needs to enter bus sleep mode. The emergency call LED in the roof module must then be checked to ensure it lights up green. If the LED does not turn green, technicians are instructed to refer to TSB 2079652, "Emergency call LED in roof module not lit up in green."

Required Tools and Parts

To perform this software update, specific items are required:

• USB-C sticks: Minimum 32 GB capacity.
• MIB3 update media part numbers: 8W0906961GB and 8W0906961GF.

What Owners Should Do

If your 2023-2025 Audi vehicle is displaying an "Emergency call fault" message or experiencing other MMI function problems, it is recommended to contact an authorized Audi service center. The software update described in TSB 2079680/3 is designed to resolve these issues and is typically covered under warranty.

Source: NHTSA ID 11031014