2025 Audi Q5 / SQ5 Software Update for Various Error Messages

Audi has issued Technical Service Bulletin (TSB) 2077960/5, which details a comprehensive software update package identified as 03.01.00/C (28.11.01) KD1**. This bulletin, released on September 24, 2025, is critical for addressing a range of error messages and control module issues experienced in various Audi vehicles, specifically impacting the 2025 Audi Q5 and SQ5 models in the United States market. The primary objective of this update is to enhance the reliability and functionality of the vehicle's IT systems and Software Version Management (SVM).

This combined software update is a crucial measure to ensure optimal performance and prevent various system malfunctions. Owners of affected 2025 Audi Q5 and SQ5 vehicles experiencing persistent error messages should consult their Audi dealership regarding this update.

Important Warnings for Owners and Technicians

Several critical instructions and warnings are outlined in TSB 2077960/5 that must be strictly followed to ensure a successful software update and prevent potential issues:

• Applicability: This TSB may only be used if at least one of the TSBs listed for the individual complaints applies to the vehicle. If this is not the case, it cannot be ensured that the KD1** package is suitable for the selected vehicle, and billing for the measure will not be possible.
• ODIS Tester Error: If the ODIS diagnostic tester cancels the flashing procedure with error code 8067, indicating that "Required systems for processing the request to the Software Version Management (SVM) did not respond," then this specific software update measure does not apply to the vehicle.
• Update Order: It is imperative that all previous combined software updates (open field campaigns) have been completed first. The updates must be performed in the correct order to avoid complications.
• High-Voltage Battery Safety: For vehicles with high-voltage components, the high-voltage charging cable MUST be unplugged BEFORE the SVM code is entered. This prevents the high-voltage battery from charging during the software update, as charging the high-voltage battery during a software update can cause damage to the high-voltage components.
• Privacy Mode: Owners should be informed that privacy mode (mobile data off) is deactivated automatically after the software update and may need to be reactivated manually by the customer.
• Key User Deletion: In isolated cases, the existing key user may be deleted at the end of the software update. Owners must be informed that the key user needs to be added again, requiring the username and password for this purpose.
• Diagnostic Tester Version: Diagnostic tester version 24.3.0 or later is absolutely essential for performing this update. Using an older version may lead to errors or an unsuccessful update.
• USB Connection: Audi strongly recommends performing the flashing procedure using a USB cable. This ensures that data transmission is as reliable as possible. Infrastructure mode is not permissible as it is very prone to interference and errors.
• Vehicle Environment: During the update, only one vehicle key should be present inside the vehicle, placed on the hazard warning lights switch. The sunroof (if fitted) must be closed, and no additional or other work may be performed on the vehicle for the entire duration of the update.
• Network Configuration: For the Q6 e-tron and all future Audi models, technicians must ensure that port 8080 on their diagnostic device is enabled for incoming TCP connections.

Symptoms and Resolved Issues

This combined software update addresses several specific complaints and error messages that owners of 2025 Audi Q5 and SQ5 vehicles may encounter. The update resolves issues detailed in other related TSBs, ensuring a smoother and more reliable operation:

• TSB 2078039: Resolves a "Warning message about high-voltage electrical system" which may be accompanied by Diagnostic Trouble Codes (DTCs) U014600, U112100, and U041200. This indicates potential communication or functional issues within the high-voltage system.
• TSB 2077961: Addresses problems with the rear occupant detection/alarm system, specifically when an "unwanted horn and flashing lights triggered" message appears.
• TSB 2078609: Corrects a "Message in instrument cluster: 'Left/right main beam headlight defective. See owner's manual'" that may display in the instrument cluster.
• TSB 2078626: Fixes issues with driver assist systems on the Q5, where "side assist issues warnings for no reason" are reported.

These issues, including the Audi Q5 software update error message, are targeted for resolution through the comprehensive software update provided by TSB 2077960/5.

Software Update Scope and Baseline Versions

While the primary focus for the linked NHTSA document is the 2025 Audi Q5 and SQ5, TSB 2077960/5 outlines a combined software update that applies to several 2025 Audi models. The update ensures that these vehicles receive the necessary software improvements to resolve various system issues. The target baseline software versions for these models are:

• Audi Q6 e-tron: 85H.990.100.K, 85H.990.100.L
• Audi Q6 e-tron Sportback: 85J.990.100.L
• Audi A6 e-tron Sportback: 85F.990.100.L
• Audi Q5: 8MA.990.100.L, 8MA.990.100.K

Repair Procedure Summary

Performing the combined software update described in TSB 2077960/5 requires a specific set of steps to ensure accuracy and prevent complications. The total duration for the update is approximately 1 hour. Technicians must follow all instructions outlined in TSB 2011732: 00 Software Version Management (SVM), operating instructions.

Pre-Update Preparations

Before initiating the software update, several preparatory steps are necessary to ensure a stable environment and prevent interruptions:

1. Vehicle Environment: The driver's door must remain open throughout the entire flashing procedure. If equipped, the sunroof must be closed. It is crucial that no additional or other work is performed on the vehicle for the entire duration of the update.
2. Key Management: Only one vehicle key should be present inside the vehicle. This key must be placed specifically on the hazard warning lights switch.
3. Electrical System: All non-essential electrical equipment must be switched off. This includes components like the blower, seat heaters, and lights. Additionally, the light switch should be set to the "off" position, and the background lighting in the Human Machine Interface (HMI) should be switched off to prevent negative interference.
4. Battery Management: A battery charger unit must be connected to the vehicle as instructed in TSB 2011732 to maintain stable voltage throughout the update process.
5. Gear Selector: The selector lever must be moved to the "P" (Park) position.
6. Diagnostic Tool Setup: The diagnostic tester must be connected to the vehicle using a USB cable. This method is strongly recommended to ensure reliable data transmission, as infrastructure mode is considered prone to interference and errors. Before entering each SVM code, technicians must verify that the current date and time are displayed correctly in the vehicle. If the date/time is incorrect, the vehicle should be moved to a location with GPS reception, or the date and time must be set manually. Failure to do so will prevent the update or cause it to abort.
7. Privacy Settings: Privacy mode (mobile data off) must be activated before starting the update.
8. Network Configuration (Q6 e-tron and future models): For the Q6 e-tron and all future Audi models, technicians must ensure that port 8080 on their diagnostic device is enabled for incoming TCP connections.

Software Flashing Process

Once preparations are complete, the software flashing can begin:

1. ODIS Navigation: Within the ODIS diagnostic tester, technicians should first select "flash" and then proceed to "SVM code input."
2. SVM Code Entry: The appropriate SVM code must be entered for the specific model being updated. For Audi Q6 and A6 models, the code is BLPPE100KUL. For Audi Q5 models, the code is BLQ5100KUL.
3. Monitoring Progress: Technicians should be aware that the progress bar may remain at 0% for an extended period, typically the initial 10-15 minutes of the update, before it begins to move forward. This is normal behavior and does not indicate a stalled process.
4. Interruption Handling: If the flashing procedure is interrupted for any reason, technicians should always retry entering the SVM code. If this retry is unsuccessful, further instructions can be found in the assistance document attached to the campaign description.

Post-Update Procedures

After the software update is complete, several steps are required to finalize the process and ensure proper vehicle function:

1. Ignition Cycle: The ignition must be switched off and then on again before exiting the diagnostic session.
2. Flash Log: When quitting the program, the flash log must be sent online.
3. Bus Sleep Cycle: A bus sleep cycle of at least 5 minutes must be performed. This is achieved by closing all doors and the hood, allowing the vehicle's systems to power down correctly.
4. Road Test: A road test or calibration drive must be conducted at a speed exceeding 25 mph.
5. Event Memory and Initialization: The entire event memory must be erased. The sunroof/sun blind (if fitted) must be initialized using Guided Fault Finding. Additionally, the tire pressures must be checked and initialized (i.e., stored) again.
6. Privacy Mode: Privacy mode must be deactivated again. Owners should be informed that privacy mode is automatically deactivated after the software update and may need to be reactivated manually.
7. Key User Re-addition: In cases where the existing key user was deleted during the update, owners must be informed that the key user needs to be added again, requiring their username and password.

Required Tools and Parts

To perform this combined software update, specific diagnostic equipment is necessary:

Tool Number	Tool Description
VAS 6160/VAS 6150	VAS tester with the current version of ODIS (Diagnostic tester version 24.3.0 or later)

Warranty Information

The warranty accounting instructions for performing the combined software update are provided in the individual TSBs that address the specific complaints (as referenced above). Technicians should consult those documents for detailed warranty claim procedures.

Bulletin Revision History

TSB 2077960/5 has undergone several revisions to ensure accuracy and expand its scope, reflecting ongoing updates and improvements:

• Revision 5: This revision included an update to the header and the addition of baseline software part numbers.
• Revision 4 (August 18, 2025): The condition section was revised to include additional bulletins and target baselines for A6 e-tron and Q5 vehicles. The service section was updated to incorporate Q5 and A6 SVM codes, and attachments were revised with a PPC assistance document.
• Revision 3 (June 27, 2025): This revision corrected a typo in a referenced TSB within the condition section.

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Source: NHTSA ID: 11023781