2021 Audi e-tron Software Update for DTCs C12EBF1 / C12EB92

Symptoms

Owners of 2021 Audi e-tron, Q7, A7, and Q8 vehicles may experience issues with their forward collision avoidance or adaptive cruise control systems. These problems can manifest as warning messages or reduced functionality of these driver assistance features. The underlying cause is often indicated by specific diagnostic trouble codes.

Fault Codes / DTCs

This technical service bulletin specifically addresses two diagnostic trouble codes (DTCs) that may appear in affected vehicles. These codes point to issues within the vehicle's advanced driver-assistance systems.

If your 2021 Audi e-tron is displaying DTC C12EBF1 or C12EB92, it indicates a software-related issue with the adaptive cruise control or forward collision avoidance systems.

Repair Procedure Summary

To resolve the C12EBF1 or C12EB92 diagnostic trouble codes, a software update and a subsequent test plan are required. The bulletin outlines a procedure for technicians to update the relevant control unit software. After the software update, a diagnostic test plan must be executed to ensure the systems are functioning correctly and the DTCs do not reappear. This process ensures the proper operation of the forward collision avoidance and adaptive cruise control features.

Owner Action

If you own a 2021 Audi e-tron, Q7, A7, or Q8 and are experiencing symptoms related to your forward collision avoidance or adaptive cruise control systems, or if you have had diagnostic trouble codes like Audi e-tron DTC C12EBF1 or C12EB92 identified, you should contact your authorized Audi dealership. The necessary software update and test plan will be performed by a qualified technician. This repair is typically covered under warranty for new vehicles.

Source: NHTSA ID: 10185263