2025 Audi Q5 Blindspot Hotfix for Calibration Failure

Symptoms

During ODIS diagnostic test plans, technicians may encounter an error message indicating "The calibration failed!" for the NR3 blindspot sensor. Other sensors like NR4, NR2, NR1, MFK5, LRR5, and MRR5 might calibrate successfully, but the NR3 sensor specifically fails. This issue points to a communication problem within the diagnostic program when attempting to calibrate the rear radar collision assist module.

Diagnosis / Trigger Conditions

The problem occurs specifically when performing diagnostic procedures using the Offboard Diagnostic Information System Service (ODIS Service). The hotfix AOS-25-28 is designed to correct communication issues that prevent successful calibration of the NR3 blindspot sensor. The ODIS software version required for this hotfix is Audi brand version 2.38.1.

Repair Procedure Summary

Audi has outlined a specific procedure for technicians to apply and remove this hotfix. This ensures that the 2025 Audi Q5 blindspot hotfix is correctly utilized without affecting other diagnostic functions.

First, technicians must download the hotfix. This involves accessing AccessAudi.com via a web browser, navigating to Elsa2Go > Service References > Software/Hardware Updates, and searching for the "AOS-25-28 LockID_Reihenfolge Hotfix Zip File". The file is then downloaded and saved to the Windows desktop.

Next, the hotfix is installed into ODIS Service. The ODIS Service application must be opened as an administrator. Technicians expand the Data submenu, click "Download" under "Hotfix", and then "Continue". The downloaded hotfix file is then selected, and "OK" is clicked to import the workshop data patch.

After the hotfix is installed, the necessary diagnostic procedure that previously resulted in the "The calibration failed!" error can be performed. This allows for the proper calibration of the blindspot sensor.

Finally, it is critical to uninstall the hotfix. In ODIS Service, technicians select "Erase" under "Hotfix", confirm by clicking "Continue", and then "OK" to delete the workshop data patch. ODIS Service should then be closed.

Important Warnings

Audi explicitly states: "We recommend installation of this hotfix on one diagnostic device ONLY. Hotfix must be removed immediately after performing the procedure." This highlights the temporary nature of the hotfix.

Furthermore, it is warned that "The Hotfix must be removed after performing the procedure. Failure to do so will cause other vehicle diagnostics sessions to malfunction." This emphasizes the potential for negative impacts on other diagnostic functions if the hotfix is not promptly uninstalled.

Required Tools or Parts

To implement this solution, an ODIS Service diagnostic device running Audi brand version 2.38.1 software is necessary. The specific hotfix required is identified by the number A_2.38.1_LockID_Reihenfolge_vor_ZDC.

Owner Action

If you own a 2025 Audi Q5 and experience issues related to your blindspot monitoring system or are informed of diagnostic difficulties by your service center, your dealer will apply this 2025 Audi Q5 blindspot hotfix as part of their diagnostic and repair process. This hotfix, AOS-25-28, is an internal service bulletin for technicians to ensure proper system calibration.

Source: NHTSA ID 11020332