2025 Audi Q5 Side Assist Warning TSB 2078626/1

Symptoms of the 2025 Audi Q5 Side Assist Warning

Owners of certain 2025 Audi Q5 and SQ5 models may experience an issue where the side assist system generates warnings without any apparent reason. The primary symptom reported is the "side assist issues warnings for no reason - Q5" message, often accompanied by the light in the exterior mirror illuminating on the corresponding side of the vehicle, even when no other vehicle is present in the blind spot. This can manifest as a "vehicle in adjacent lane warning" that activates without cause, leading to unnecessary alerts and potential driver distraction. The complaint type is described as "functionality -> activates without cause", directly addressing the 2025 Audi Q5 side assist warning.

Diagnosis and Trigger Conditions

When diagnosing the "side assist issues warnings for no reason - Q5" complaint, technicians can typically reproduce the issue in a workshop setting. The diagnostic process outlined in Audi Technical Service Bulletin (TSB) 2078626/1 involves several key steps to address the 2025 Audi Q5 side assist warning.

First, technicians are instructed to check if TSB 2077960 is applicable and visible for the specific vehicle. If it is, the software update detailed in TSB 2077960 should be performed. Following this, a dynamic calibration of the lane change assist control units (-J769- and -J770-) and the radar sensor control units for object detection (-J1088- and -J1089-) is required. This calibration drive ensures the sensors are accurately aligned and functioning correctly according to the Workshop Manual.

If the software update from TSB 2077960 is not yet available, an alternative diagnostic procedure must be followed. This involves recording all measured values for the lane change assist control units -J769-/-J770- using diagnostic addresses 810B and 810C. Similarly, measured values for the radar sensor control units for object detection -J1088-/-J1089- must be recorded using diagnostic addresses 8109 and 810A. Additionally, technicians must physically inspect these control units to ensure they are fitted correctly and securely engaged in their brackets. It is crucial to verify that the wiring is not routed in the sensor's field of view and that there are no obstructions such as stickers, adhesive residue, or dirt on the sensors' fields of view on the inside of the bumper. Any observed issues should be documented with clear photos attached to Doc-IT.

Repair Procedure Summary

The resolution for the 2025 Audi Q5 side assist warning issue primarily involves a software update and subsequent calibration. The main repair outlined in TSB 2078626/1 directs technicians to first perform the software update described in TSB 2077960, if available for the vehicle. This update addresses the underlying software logic that causes the erroneous warnings.

After the software update, a dynamic calibration of the lane change assist control units (-J769- and -J770-) and the radar sensor control units for object detection (-J1088- and -J1089-) is mandatory. This calibration drive ensures that all sensors are properly synchronized and accurately detect objects.

In cases where the software update from TSB 2077960 is not immediately available, the TSB provides an interim procedure. This involves a thorough diagnostic check where technicians record measured values from the lane change assist control units (J769/J770) via diagnostic addresses 810B and 810C, and from the radar sensor control units (J1088/J1089) via diagnostic addresses 8109 and 810A. A physical inspection is also required to confirm that these control units are correctly installed and securely mounted, with no wiring interference or physical obstructions (like stickers or dirt) affecting the sensors' field of view. Any findings from this inspection, particularly any issues, must be documented with photographs and submitted to Doc-IT. Regardless of whether the software update is performed immediately or after the interim steps, a dynamic calibration of the lane change assist and radar sensor control units must be carried out. Finally, the diagnostic log must be sent online to complete the repair process.

Important Warnings for Owners and Technicians

Audi Technical Service Bulletin 2078626/1 includes several critical advisories. For vehicles still within their new model launch repair authorization period, workshops are required to create a case with the Technical Assistance Center (TAC) for repair authorization. The TSB number, 2078626/1, must be referenced in the first line of the TAC case.

It is also important to note that the software update described in TSB 2077960 will be released in stages for different vehicle models and markets, depending on availability. This means the update may not be immediately accessible for all affected vehicles. Owners should be aware that if their vehicle is outside of any warranty, this Technical Service Bulletin is informational only, implying that repair costs may fall to the owner.

Owner Action

If your 2025 Audi Q5 or SQ5 is experiencing the "side assist issues warnings for no reason - Q5" fault, it is recommended to contact your authorized Audi dealer. Inform them about the symptoms you are observing, specifically the "vehicle in adjacent lane warning" activating without cause, and mention Audi Technical Service Bulletin 2078626/1. The dealer will be able to diagnose the issue and perform the necessary software update and calibration to resolve the 2025 Audi Q5 side assist warning. Be aware that if your vehicle is no longer under warranty, this repair may not be covered free of charge.

Source: NHTSA ID: 11022681