2025 Audi A5/Q5 Software Update TSB 2079690/4

Audi has issued Technical Service Bulletin (TSB) 2079690/4, detailing a comprehensive software update for several 2025 Audi models. This update, identified as software version 03.10.00/C (28.13.01) KD2, aims to enhance various vehicle systems and address multiple reported issues. Owners of affected vehicles, including the 2025 Audi A5, S5, Q5, and SQ5, should be aware of this important update.

This 2025 Audi A5 combined software update is crucial for optimizing the performance and reliability of your vehicle's electronic systems. The update process involves specific procedures that must be followed by trained technicians to ensure successful implementation and proper functionality afterward.

Symptoms and Resolved Complaints

This combined software update resolves a wide array of complaints and introduces several optimizations across different vehicle systems. Owners may have experienced issues related to the following areas, which this update is designed to improve:

• Display and User Settings: Optimizations to how information is displayed and how user preferences are managed.
• Navigation System: Improvements in map depiction, route calculation, route guidance, and overall navigation performance.
• Connectivity: Enhancements to various connectivity features, including APN (Access Point Name) settings, Bluetooth, radio functionality, navigation services, and eCall emergency services.
• Operation and Voice Assistant: Optimizations to the vehicle's general operation and the responsiveness and accuracy of the voice assistant system.
• Traffic Sign Recognition: General improvements to the recognition of traffic signs, addressing malfunctions and deactivations of assist systems.
• Driving Characteristics: Better performance during moving off, improved hold function, and reduced juddering.
• Warning Lamps: Avoidance of incorrect warning lamps appearing on the instrument cluster.
• Charging: Optimizations related to charging times, app integration, State of Charge (SOC) display accuracy, and resolution of 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 update enables the sharing of digital keys, allowing up to five digital keys, including the main key, to be used.

Important Warnings and Owner Information

Several critical notices and warnings are outlined in TSB 2079690/4 that technicians and owners must be aware of before, during, and after the software update. Adhering to these instructions is vital for a successful update and to prevent potential issues.

• Prior Field Campaigns: All open field campaigns must have been performed in advance of this software update. Technicians should work through them according to their publication date.
• Physical Key Requirement: A physical key (remote control key) is absolutely required to perform the software update. Digital keys and digital key cards cannot be used for this procedure.
• Digital Key Reset: If a digital key is currently in use, resetting the key user will remove this digital key, requiring it to be set up again after the update.
• Digital Key Setup Issues: If it's not possible to set up the digital key during the workshop procedure, technicians must delete and set it up again after the software update. Customers should be provided with specific instructions for digital key setup.
• Mobile Data Deactivation: After the software update, Mobile Data is automatically turned off and may need to be reactivated by the customer.
• Post-Update Settings Adjustment: Various vehicle settings will need to be re-adjusted after the software update. A customer letter is attached to the TSB for technicians to print and provide to the customer upon vehicle return.
• High-Voltage Components and Charging: For vehicles with high-voltage components, the high-voltage charging cable must be unplugged BEFORE the SVM code is entered to prevent the battery from charging during the update. Charging the high-voltage battery during a software update can cause damage to high-voltage components.
• Driver's Door and Diagnostic Cable: The driver's door must remain open for the entire duration of the flashing procedure. Do not run the diagnostic interface cable through the window, as window regulators will be initialized later.
• Vehicle Key Placement: Only one vehicle key should be placed inside the vehicle. For Audi Q6 e-tron and A6 e-tron (PPE models), the key must be placed on the hazard warning lights switch. For Audi A5, Q5, and A6 (PPC models), it should be on the reader coil.
• No Other Work During Update: No additional or other work may be performed on the vehicle for the entire duration of the software update.
• Bus Sleep Mode: The vehicle must be put into bus sleep mode before running the