2025 Audi Software Update 03.10.00/C for MMI, Digital Key Fixes

Audi has released Technical Service Bulletin (TSB) 2079690/5 to inform technicians about a critical software update, identified as 03.10.00/C (28.13.01) KD2. This update is designed to improve the performance and address a range of issues across several 2025 Audi models, including the A5, S5, SQ5, and Q5. The comprehensive update targets various vehicle systems, aiming to enhance the overall user experience and resolve reported complaints.

This TSB, revision 5, released on November 26, 2025, supersedes previous versions and includes updated service instructions and adaptation procedures. It is crucial for owners of affected vehicles to understand the benefits of this update and the necessary steps involved in its implementation.

Symptoms Resolved by Software Update 03.10.00/C

The combined software update 03.10.00/C (28.13.01) KD2 addresses a multitude of complaints and aims to optimize several vehicle functions. Owners may notice improvements in the following areas after the update:

• Display and User Settings: General optimizations to how information is displayed and how user preferences are managed within the MMI system.
• Navigation System: Enhanced depiction, more accurate route calculation, improved route guidance, and overall better navigation performance.
• Connectivity: Optimizations for various connectivity features, including APN settings, Bluetooth functionality, radio reception, navigation services, and eCall systems.
• Operation and Voice Assistant: Improvements to the vehicle's operational aspects and the responsiveness and accuracy of the voice assistant.
• Traffic Sign Recognition: General optimization of traffic sign recognition, aiming to prevent malfunctions and deactivation of assist systems related to this feature.
• Driving Characteristics: Improved vehicle behavior, specifically addressing issues like moving off, the hold function, and juddering.
• Warning Lamps: Avoidance of incorrect warning lamps appearing on the instrument cluster.
• Charging: Optimizations related to charging times, app integration for charging, SOC display accuracy, and resolution of general charging difficulties.
• Mobile Key: Improvements to mobile key functionality, including key detection and the keyless system.
• Child Presence Detection: Optimizations to prevent incorrect triggering of the child presence detection system.
• Digital Key Sharing: The ability to share the digital key with up to five individuals, including the main key, is now possible.

Important Warnings and Owner Advisories

Audi has provided several critical notices within TSB 2079690/5 that owners and technicians must be aware of:

These warnings highlight critical steps and potential issues during the update process, ensuring that both technicians and owners are fully informed. For instance, the requirement for a physical key and the temporary deactivation of mobile data are important details for owners to be aware of.

Fault Codes and Identifiers

While the TSB 2079690/5 primarily focuses on software optimization rather than specific diagnostic trouble codes (DTCs), it does mention a key fault code related to the update process itself:

• Fault Code 8024: If this fault code is displayed during the software update procedure, it indicates that an incorrect SVM (Software Version Management) code was entered. Technicians must ensure they are using the correct SVM code, which varies between PPE (Premium Platform Electric) and PPC (Premium Platform Combustion) models.

Other important identifiers mentioned in the TSB include:

• TSB Numbers: 2079690/5 (this bulletin) and 2079692 00 Aid (a separate aid for flashing issues).
• Software Version: 03.10.00/C (28.13.01) KD2.
• SVM Codes: Specific codes like BLKD2PPE, DUCLDRM0046, DUCDOORWR, and BLKD2PPC are used for different vehicle platforms.
• PR Numbers: 2F1 (related to digital key reset), QI4, and Q17 (for specific adaptation channels).
• Diagnostic Tester Version: A minimum Audi brand diagnostic tester version of 2.39.4 is required.
• Diagnostic Address: 0017 (Instrument cluster) is used for post-update adaptations.
• Adaptation Channels: 0x0306, 0x0307, 0x22A4, 0x22A5 are specific channels for distance and time until next inspection, requiring adjustment for vehicles with PR QI4 or Q17.

Repair Procedure Summary

The software update 03.10.00/C (28.13.01) KD2 involves a detailed flashing procedure that requires careful execution by a qualified technician. The total duration for the combined software update, including preliminary and follow-up work, is approximately 3.5 hours.

Pre-Update Steps

Before initiating the software update, several preparatory steps are necessary:

1. Digital Key Deletion (if applicable): If a digital key is currently adapted to the vehicle, it must be deleted before the software update. This is done via the MMI under "Digital key" > "Management" > "Primary device management" > "Remove primacy device." A physical key must be present in the vehicle for this step.
2. Vehicle Requirements: Ensure a physical key (remote control key) is available, the key user's device is available, a key user is created, and the vehicle has mobile reception, is online, and has a valid time signal.
3. High-Voltage Components (e-tron models): For vehicles with high-voltage components, the high-voltage charging cable must be unplugged before the SVM code is entered to prevent battery charging during the update.
4. Vehicle Environment: The driver's door must remain open throughout the flashing procedure. Activate privacy mode (mobile data off) and switch off background lighting in the HMI to prevent interference. Only one vehicle key should be inside the vehicle, placed on the hazard warning lights switch (for Q6/A6 e-tron PPE models) or the reader coil (for A5/Q5/A6 PPC models).
5. Date and Time Verification: Before entering any codes, verify that the current date and time are correctly displayed in the vehicle. If not, move the vehicle to a location with GPS reception or manually set the time.
6. Bus Sleep Mode: The vehicle must be put into bus sleep mode for 5 minutes, with all doors, trunk, and hood closed and locked. The update should commence directly after this bus sleep.
7. Power and Electrical: Connect a battery charger unit according to workshop specifications. Switch on the ignition (for Q6/A6 e-tron, ignition may switch off if the driver leaves the seat, requiring re-ignition without sitting). Switch off all non-essential electrical equipment such as the blower, seat heater, and lights. Ensure the selector lever is in 'P'.

Flashing Procedure

1. Diagnostic Tester Connection: Connect the diagnostic tester, running Audi brand version 2.39.4 or higher, to the vehicle using a USB cable. USB connection is strongly recommended for reliable data transmission.
2. SVM Entry: In the diagnostic tester, select "flash" and then "SVM – Authorized Multiple Code Entry." Enter the appropriate SVM code for the vehicle's platform (e.g., BLKD2PPE for PPE models, BLKD2PPC for PPC models). If fault code 8024 appears, re-enter the correct SVM code.
3. Update Progress: The update progress can be monitored on both the vehicle's display and the diagnostic tester. During the first 20 to 30 minutes, the vehicle's display may switch on and off or remain dark; no actions should be performed on the vehicle during this critical period.
4. Diagnostic Interface: Once the update phase starts, the diagnostic tester may prompt to unplug the diagnostic interface. If unplugged, the interface must not be re-plugged during the update. If the update is successful, the vehicle will display "Install update finished successful." If an "Installation error" occurs, the SVM function must be run again.

Post-Update Steps

After the software update 03.10.00/C has been successfully completed:

1. Unplug Diagnostic Tester: Once the "SVM – Authorized Multiple Code Entry" function is finished, unplug the vehicle diagnostic tester.
2. Door Cycle: Open and close all vehicle doors once to initialize the adaptive cruise assist system.
3. Manual Release Mechanism: If triggered, press the manual release mechanism back into its starting position.
4. Privacy Mode: Deactivate privacy mode (mobile data on).
5. Tire Pressure: Check and re-initialize tire pressures.
6. Bus Sleep Cycle: Perform another bus sleep cycle of at least 5 minutes by closing all doors and the hood.
7. Road Test: Conduct a road test/calibration drive at a speed above 40 km/h. During this drive, activate the cruise control system and the ACC system to ensure they are working correctly.
8. Final Diagnostic Connection: Re-plug the vehicle diagnostic tester to send the flash log online and erase the event memory.
9. Digital Key Re-setup: For vehicles with PR number 2F1, the digital key must be reset. This involves setting up the digital key, deleting it, and then setting it up again to enable sharing via the myAudi app. This process initiates the necessary backend procedures.
10. Mobile Data Reactivation: Inform the customer that mobile data is automatically turned off after the update and may need to be reactivated manually.
11. Adaptation Channels (PR QI4 or Q17): For vehicles equipped with PR numbers QI4 or Q17, specific adaptations are required in diagnostic address 0017 (Instrument cluster). This involves checking and, if necessary, writing values from 0x0306 to 0x22A4, and from 0x0307 to 0x22A5.

Required Tools or Parts

To perform this software update, technicians will need:

• Audi Brand Diagnostic Tester: Version 2.39.4 or higher.
• USB Cable: Recommended for connecting the diagnostic tester to the vehicle to ensure reliable data transmission.
• Battery Charger Unit: To maintain stable voltage during the flashing procedure.
• Physical Key (Remote Control Key): Essential for various steps, including ignition and digital key management.

Owner Action

If you own a 2025 Audi A5, S5, SQ5, or Q5 and are experiencing any of the symptoms mentioned, such as MMI display issues, navigation problems, connectivity glitches, or difficulties with your digital key, your vehicle may benefit from this software update. Since this is a technical service bulletin, not a recall, Audi is not directly notifying consumers. However, your authorized Audi dealer can perform this update.

Contact your local Audi dealership to schedule an appointment. Be sure to mention TSB 2079690/5 and the software version 03.10.00/C. The dealer will have the necessary tools and expertise to perform the update and any required post-update procedures, including the digital key reset and mobile data reactivation. While the TSB indicates a total of 150 TU (Technical Units) will be paid for this software update under warranty, specific billing information is stored in a separate "Customer complaint TSB."

NHTSA ID: 11026234