2025 Audi Q5 Side Assist Warnings TSB 2078626/3

Audi has released Technical Service Bulletin (TSB) 2078626/3 to address a concern regarding erroneous side assist warnings in certain 2025 Audi Q5 and SQ5 vehicles. Owners may experience false alerts from the driver assistance system, specifically "side assist issues warnings for no reason", even when no other vehicles are present in the blind spot.

This TSB, identified as 2078626/3, provides a detailed service procedure for technicians to rectify the issue, which involves a software update and subsequent calibration of the relevant control units. The problem is typically reproducible during workshop diagnosis, confirming a systemic rather than intermittent fault.

Revision History

Technical Service Bulletin 2078626/3 has undergone several updates since its initial publication:

• Revision 1: Initially published on August 18, 2025, this version also included revised accounting instructions for warranty claims.
• Revision 2: Dated December 04, 2025, this revision updated the service section by removing a reference to KD1 and adding a reference to KD2.
• Revision 3: This most recent revision specifically updated the warranty section, detailing changes to labor operations.

Symptoms

Owners of affected 2025 Audi Q5 and SQ5 models may notice the following symptoms related to the side assist system:

• The instrument cluster displays the message: "side assist issues warnings for no reason".
• The warning light in the exterior mirror on the corresponding side of the vehicle illuminates without cause, indicating a perceived object in the blind spot when none is present.

These false 2025 Audi Q5 side assist warnings can be a nuisance and potentially undermine driver confidence in the system's reliability.

Fault Codes / Damage Codes

While no specific Diagnostic Trouble Codes (DTCs) are explicitly listed in the TSB, the manufacturer has assigned a Damage Code of KD02 to this particular condition. This code helps technicians identify the nature of the fault for warranty and repair purposes.

Diagnosis / Trigger Conditions

Workshop findings confirm that the customer complaint of false side assist warnings can usually be reproduced during diagnostic checks. This indicates a consistent issue that can be verified by technicians, allowing for a straightforward diagnostic path.

Repair Procedure Summary

The resolution for the 2025 Audi Q5 side assist warnings involves a two-step process:

1. Software Update: Technicians must perform a specific software update as detailed in related TSB 2079690. This update, identified as "00 Combined software update 03.10.00/C (28.13.01) KD2", targets the vehicle's driver assistance systems to correct the logic causing the false warnings. The procedure for this update includes connecting a battery charger to ensure stable voltage throughout the process.
2. Dynamic Calibration: Following the software update, a dynamic calibration of the lane change assist control units (-J769-/-J770-) and the radar sensor control units for object detection (-J1088-/-J1089-) is required. This calibration drive ensures that the sensors are accurately aligned and functioning correctly after the software changes, preventing further erroneous alerts. The specific calibration procedure will follow instructions in the Workshop Manual, adapted to the vehicle's equipment (79H, 7Y1).

Warranty Information

Audi has provided specific guidelines for warranty claims related to TSB 2078626/3:

• Claim Type: If the vehicle is outside of any warranty coverage, this Technical Service Bulletin is for informational purposes only. This means the repair may not be covered free of charge.
• Service Number: The designated service number for this repair is 9635.
• Damage Code: The specific damage code associated with this condition is KD02.
• Labor Operations: The following labor operations are outlined for this repair:
  • 0151 0010: Software update, including connecting a battery charger. This operation refers to the Service Repair Time (SRT) for associated tasks.
  • 0151 0040: Fixed rate for the software update, encompassing all required preliminary and follow-up work, including the bus sleep cycle, calibration drives, and additional work. This operation is allocated 130 Time Units (TU).
  • 0150 9999: For instances where additional attempts are needed due to a flash abort, an additional lump sum of 50 TU can be claimed per flash cancellation, per each documented attempt.
  • 0150 0060: This covers Guided Functions (GFF), with the time stated on the diagnostic protocol.
  • 9635 1552: Adjusting the lane change assist control unit (dynamic), which also refers to the SRT for associated operations.
• Claim Comment: All claims must include the comment "As per TSB 2078626/3".
• General Policy: All warranty claims must adhere to the Audi Warranty Policies and Procedures Manual and are subject to review by Audi Warranty. When performing the combined software update, time stamps are not required for billing under warranty, and technicians are permitted to work on other vehicles at the same time. The combined software update can also be performed by non-productive personnel.

Important Warnings

Owners should be aware of the warranty implications for this service. Audi explicitly states that if the vehicle is outside of any warranty, this Technical Service Bulletin is for informational purposes only. This means that the repair costs may not be covered free of charge, and owners would be responsible for the expense. It is crucial to confirm your vehicle's warranty status with an authorized Audi dealer before proceeding with the repair. Additionally, all warranty claims must comply with the Audi Warranty Policies and Procedures Manual and are subject to review.

Owner Action

If you are experiencing "side assist issues warnings for no reason" or false blind spot light activations in your 2025 Audi Q5 or SQ5, it is recommended to schedule an appointment with an authorized Audi service center. Inform them about the symptoms you're observing and mention Technical Service Bulletin 2078626/3. The dealer will perform the necessary software update and dynamic calibration to resolve the issue, addressing the 2025 Audi Q5 side assist warnings.

Source: NHTSA ID 11027406