2021-2023 Audi MMI Software Update for Connectivity Box

Audi has issued Technical Service Bulletin (TSB) 2079133/2 to resolve various functional issues affecting the Multi Media Interface (MMI) system and connectivity box in certain MIB3-equipped vehicles. This bulletin, with a release date of October 7, 2025, provides an Audi MMI software update (NAR version ST37) designed to enhance the stability and performance of the infotainment system.

This TSB is particularly relevant for owners of 2021-2023 Audi A4, A5, A6, A7, A8, Q3, Q5, Q7, Q8, and e-tron models who may be experiencing intermittent MMI malfunctions or specific warning messages. The update targets the emergency call module (diagnostic address 0075) and information electronics (diagnostic address 005F).

Revision History

TSB 2079133/2 has undergone revisions:

• Revision 2: Included a revised header to add more models and updated the warranty table.
• Revision 1: Initial publication on August 29, 2025.

Symptoms

Owners of affected Audi vehicles may observe a range of issues related to the MMI system. These problems often manifest as disruptions in core infotainment, navigation, communication, and entertainment functionalities. Common complaints, categorized by Audi's customer complaint codes, include:

• "information, navigation, communication, entertainment -> navigation mode"
• "information, navigation, communication, entertainment -> radio, navigation, MMI and drive device functions"
• "information, navigation, communication, entertainment -> radio operation"
• "information, navigation, communication, entertainment -> screen settings"
• "information, navigation, communication, entertainment -> instrument cluster, displays, screens"
• "information, navigation, communication, entertainment -> telephony"
• "information, navigation, communication, entertainment -> audio playback, audio settings"
• "information, navigation, communication, entertainment -> malfunction display symbols -> interference display for emergency call service" (This often appears as an "Emergency call fault" message in the instrument cluster).
• "information, navigation, communication, entertainment -> Telematics, online services"
• "information, navigation, communication, entertainment -> Infotainment system operation with multifunction steering wheel"
• "information, navigation, communication, entertainment -> audio, video, television"
• "information, navigation, communication, entertainment -> settings"
• "information, navigation, communication, entertainment -> controlling infotainment with buttons, controls, screen"
• "information, navigation, communication, entertainment -> telephone operation"
• "information, navigation, communication, entertainment -> media playback"
• "information, navigation, communication, entertainment -> operation, control, speech input"
• "information, navigation, communication, entertainment -> Online Services"

These symptoms are typically linked to an outdated software version, specifically if the vehicle's diagnostic address 5F reports a software version less than 3900.

Diagnosis / Trigger Conditions

For technicians, the primary diagnostic indicator for this issue is the software version reported in diagnostic address 5F (Information electronics 1). If the vehicle's software version is found to be less than 3900, it is a candidate for this Audi MMI software update. The TSB also notes that diagnostic entries logged in diagnostic address 0075 (Emergency Call Module) can be resolved by this software update.

Important Warnings and Instructions

Audi has outlined several critical points within TSB 2079133/2 that owners and service personnel should be aware of:

• Guided Fault Finding Test Plans: For diagnostic entries in diagnostic address 0075 that are repaired by this software update, the Guided Fault Finding test plans should not be carried out and cannot be invoiced. This prevents unnecessary diagnostic work.
• Inactive Periods During Update: The software update procedure involves extended inactive periods. Technicians are permitted to work on other vehicles during this time, and this is accounted for in warranty instructions.
• Warranty Billing: When performing this TSB, time stamps are not required for billing under warranty.
• Personnel: The update can be performed by non-productive personnel, indicating a streamlined process that doesn't necessarily require a master technician.
• USB Media Requirements: It is crucial to prepare the required USB-C sticks before starting the repair. Technicians must not use an SD card with an adapter USB stick. Additionally, do not use a USB-C stick with a larger storage capacity as such USB sticks have a different formatting process that is incompatible with the update.
• Interrupted Procedure: If the software update procedure is interrupted for any reason, technicians must repeat step 1. The test program is designed to automatically perform any missing parts of the update from that point.
• Emergency Call LED Check: After the update, if the emergency call LED in the roof module does not light up green, refer to TSB 2079652, titled "91 Emergency call LED in roof module not lit up in green," for further diagnosis.
• ODIS Update: Ensure the diagnostic tester being used has the latest ODIS update, as a newly developed test program for SVM code input is included in ODIS software.
• Acoustic and Visual Cues: The vehicle uses acoustic signals and flashing lights to indicate when user input is required during and at the end of the test program.

Repair Procedure Summary

The repair involves updating the software for both the emergency call module (0075) and the information electronics (005F) using a specific procedure. Here's a summary of the steps:

1. Software Update for Emergency Call Module (0075) and Information Electronics (005F):
   • Use the function "SVM – Multiple authorised code inputs" in "Flash" mode within the diagnostic system.
   • Technicians must accurately enter specific SVM code chains. These codes are provided in the TSB and are unique to different vehicle models. It is recommended to scan the provided QR codes or copy and paste the codes exactly, including commas and without spaces, to avoid errors.
     • For Audi A4, A5, A6, A7, A8, Q5, Q7, Q8, and e-tron (GE) models, the SVM code is: FLIGHTON0075MLB,ZGDOIP,CL37A001US,TGU1MDMVB,CL37A002US,FLIGHTOFF0075MLB
     • For the Audi Q3, the SVM code is: TGU1MDMVB,CL37A001US,CL37A002US
   • The test program will initially prompt you to use a USB medium (USB-C stick) containing the update software.
   • The software update program runs automatically. The automatic execution of software updates results in inactive time, which is considered in the warranty accounting instructions.
   • If the procedure is interrupted, repeat step 1. The test program will then automatically perform the missing part of the update.
2. 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 system.
3. Check the Emergency Call LED: Verify that the emergency call LED in the roof module lights up green again. If it does not turn green, refer to TSB 2079652, "91 Emergency call LED in roof module not lit up in green," for further diagnosis.
4. End Diagnostic Session: Conclude the diagnostic session and send the diagnostic log to GFF paperless.

Required Tools or Parts

To perform this software update, specific USB-C sticks are required. These sticks must comply with the USB 2.0 specification and have a capacity of 32GB. The software is downloaded onto these sticks using the Flash Media Creator (FMC). General information on USB-C sticks for software updates can also be found in TSB 2065023, "91 MIB3: Software Update Instructions."

Below are the part numbers for the USB-C update media, depending on the vehicle model and whether it is equipped with Sirius (PR number QV0 for without Sirius, QV3 for with Sirius):

Vehicle type	Part number
Audi Q3 without Sirius (I8W with QV0)	8W0.906.961.DJ
Audi Q3 with Sirius (I8W with QV3)	8W0.906.961.GA
Audi Q3 without Sirius (I8Y with QV0)	8W0.906.961.DK
Audi Q3 with Sirius (I8Y with QV3)	8W0.906.961.FT
Audi A4, A5, Q5 without Sirius (PR number QV0)	8W0.906.961.DK
Audi A4, A5, Q5 with Sirius (PR number QV3)	8W0.906.961.FT
Audi A6, A7, Q7, Q8, A8, e-tron without Sirius (PR number QV0)	8W0.906.961.DL
Audi A6, A7, Q7, Q8, A8, e-tron with Sirius (PR number QV3)	8W0.906.961.FS

Warranty Information

Warranty claims for this TSB must adhere to the Audi Warranty Policies and Procedures Manual. The claim type is generally informational if the vehicle is outside of warranty. The claim comment refers to TSB 2079133/1.

The service numbers associated with this update are:

• Complaints about emergency call function or online services:
  • Q3: 9170/0041
  • A4, A5, A6, A7, A8, Q5, Q7, Q8, e-tron (GE): 9145/0041
• Complaints about MMI functions: 9196/0041

The damage code refers to the repair itself. Labor operations include:

• Prepare repair (0151 0010): This involves parking the vehicle and charging the 12V battery, with an estimated time of 20 time units (TU).
• Launch software update for MMI and emergency call module (0151 0040): This involves connecting the tester and starting ODIS, with an estimated time of 60 TU.

What Owners Should Know

If you own a 2021-2023 Audi A4, A5, A6, A7, A8, Q3, Q5, Q7, Q8, or e-tron and are experiencing MMI issues or an "Emergency call fault" message, this TSB provides a direct solution through an Audi MMI software update. It's important to note that the new software for the affected control units was implemented in production for model year 2025 vehicles, meaning newer models should not exhibit these issues. Contact your authorized Audi dealer to schedule the software update. Ensure they are aware of TSB 2079133/2 and the specific requirements for the update media.

NHTSA ID: 11025281