2025 Audi A5/Q5/S5/SQ5 Software Update TSB 2079690/8

Audi has issued Technical Service Bulletin (TSB) 2079690/8, titled "00 Combined software update 03.10.00/C (28.13.01) KD2," to address a range of software-related concerns in certain 2025 Audi models. This comprehensive software update aims to improve various vehicle systems and functionalities.

This TSB, last revised on March 27, 2026, provides detailed instructions for performing the software update and outlines necessary post-update procedures, particularly concerning the digital key system. Owners of affected vehicles experiencing issues related to the systems mentioned should consult their authorized Audi service center for this Audi A5 software update.

What this Software Update Addresses

This software update resolves numerous complaints and optimizes several vehicle functions, enhancing overall performance and user experience. The improvements cover:

• Appearance and User Settings: General optimizations to the vehicle's display and user interface settings.
• Navigation System: Enhancements to appearance, route calculation, route guidance, and overall navigation performance.
• Connectivity: Optimizations for various connectivity features including APN, Bluetooth, radio, navigation, and eCall services.
• Operation: Improvements to the voice assistant and the navigation system's operational stability.
• Traffic Sign Recognition: General optimization of recognition capabilities, addressing malfunctions and deactivation of assist systems.
• Driving Characteristics: Improved performance related to moving off, hold function, and elimination of juddering.
• Warning Lamps: Avoidance of incorrect warning lamp illuminations.
• Charging: Optimizations for charging times, app functionality, SOC display, and resolution of charging difficulties.
• Mobile Key: Improvements to key detection and the keyless system.
• Child Presence Detection: Optimizations to avoid incorrect triggering of the child presence detection system.
• Digital Key Sharing: Enables sharing of up to five digital keys, including the main key.

Important Warnings and Owner Information

Owners should be aware of several critical advisories related to this Audi A5 software update:

• Prior Campaigns: "Please note that all open field campaigns must have been performed in advance. Please work through them according to their publication date."
• Digital Key Usage: "The physical key is required to perform the software update. The digital key and the digital key card cannot be used to perform the software update." Additionally, "Use of the digital key is currently not recommended as it can lead to undesirable system interactions in the vehicle."
• Mobile Data: "Please inform the customer that Mobile Data is turned off automatically after the software update and may need to be reactivated."
• Post-Update Adjustments: "Various settings must be re-adjusted after the software update. For this reason, a customer letter has been attached to this TSB. Please print this document and give it to the customer when returning the vehicle."
• High-Voltage Vehicles: "To prevent the high-voltage battery from charging during the software update, the high-voltage charging cable on vehicles with high-voltage components must be unplugged BEFORE the SVM code is entered." Charging during the update can damage high-voltage components.
• SVM Configuration Tests: "Under no circumstances should SVM configuration tests be performed if the software update via SVM was not fully completed and documented. Already updated control units will otherwise be incorrectly identified as faulty. The vehicle must be fully updated before documenting the version."
• Aborted Updates: "If an update was aborted and a control unit therefore must be replaced, do not perform a configuration test, but instead, use the function 'Replace control unit'."
• Diagnostic Cable: "The driver's door must remain open for the duration of the flashing procedure. Please do not run the diagnostic interface cable through the window because the window regulators will be initialized in a later step."
• Vehicle Interaction During Update: "You must not perform any actions on the vehicle during this time (e.g. switch the ignition on/off, select a gear)." The display may be dark for the first 20-30 minutes.
• Error Messages: If flashing is aborted or messages like "Installation error" are shown, refer to the separate TSB 2079692 00 Aid for TSB 2079690 (00 Combined software update 03.10.00/C (28.13.01) KD2).

Fault Codes and SVM Information

During the software update process, specific fault codes or SVM (Software Version Management) codes may be encountered:

• DTC 8024: If the fault code 8024 is displayed, it indicates that an incorrect SVM code was entered. It is important to note that different SVM codes are used depending on the vehicle's platform (PPE vs. PPC).
• SVM Codes for PPE Models: For PPE (Premium Platform Electric) models like the Q6 e-tron and A6 e-tron Sportback, the SVM codes are BLKD2PPE, DUCLDRM0046, DUCDOORWR.
• SVM Codes for PPC Models: For PPC (Premium Platform Combustion) models such as the Audi Q5 and A5 Sportback, the SVM codes are BLKD2PPC, DUCLDRM0046, DUCDOORWR.

Software Update Procedure Summary

Performing this Audi A5 software update requires specific preparation and steps by a qualified technician:

1. Vehicle Preparation: The vehicle must undergo a bus sleep cycle. Ensure the physical key is present, the battery charger is connected, ignition is on, all electrical equipment (blower, seat heater, lights) is off, and the selector lever is in 'P'.
2. Diagnostic Equipment: A diagnostic tester with Audi brand version 2.39.4 or higher is required, connected via a USB cable for reliable data transmission.
3. Flashing Process: The technician selects "flash" and then "SVM – Authorized Multiple Code Entry" in the diagnostic tool, entering the appropriate SVM code for the vehicle.
4. Monitoring Progress: The update progress can be tracked on the vehicle display (though it may be dark for the initial 20-30 minutes) and the diagnostic tester. Messages like "Install update finished successful" or "Installation error" will indicate status.
5. Post-Update Actions: After the update, technicians must open and close all vehicle doors and the trunk, deactivate privacy mode, check and initialize tire pressures, perform another bus sleep cycle, and conduct a road test at speeds above 40 km/h to verify cruise control and ACC functionality.

Digital Key Reactivation After Update

Due to the nature of the software update, the digital key system requires a specific reactivation procedure:

• Before Software Update: Any existing digital key must be deleted. This is done via the MMI by navigating to the "Digital key" menu, then "Management," and selecting "Primary device management" to "Remove primary device." The physical key must be inside the vehicle during this process.
• After Software Update: The digital key must be set up again, then deleted, and then set up a second time. This sequence initiates the necessary backend process to enable digital key sharing. If the customer wishes to use the digital key despite the recommendation against it, this activation must be performed.

Required Adaptations After Update

For vehicles equipped with PR numbers Q14 or Q17, specific adaptations are necessary in the Instrument Cluster (HCP3, diagnostic address 0017) after the software update:

• Adaptation Channels: Technicians need to access adaptation channels 0x0306 (Distance until next target data container inspection), 0x0307 (Time until next target data container inspection), 0x22A4 (Distance until next inspection), and 0x22A5 (Time until next inspection).
• Measure: If the value of 0x0306 is not equal to 0x22A4, the value from 0x0306 must be read out and written to adaptation channel 0x22A4. Similarly, if 0x0307 is not equal to 0x22A5, the value from 0x0307 must be written to 0x22A5.

Warranty Information

Audi will compensate dealers for performing this software update. A total of 150 Technical Units (TU) will be paid for this service. The specific billing information for the combined software update is stored in the respective "Customer complaint TSB," and final billing is processed through this channel. Time stamps are not required for warranty billing, allowing technicians to work on other vehicles concurrently. The update can also be performed by non-productive personnel.

Source: NHTSA ID 11031015