2022-2026 Audi Virtual Cockpit Fault: B174404 Warning

Symptoms

Owners of various 2022-2026 Audi models may observe a specific warning message displayed in the virtual cockpit. The primary message reported is "Instrument cluster: fault. Limited warning messages. Please contact workshop". Additionally, some drivers might experience the virtual cockpit unexpectedly rebooting while the vehicle is in operation.

Fault Codes / DTCs

When these symptoms occur, a specific Diagnostic Trouble Code (DTC) is typically stored in the Audi virtual cockpit's control unit (J285, address word 0017). This code points to a hardware-related problem.

Diagnostic Address	Diagnostic Trouble Code	Fault Symptom	Storage State
0017 - Instrument cluster	B174404	Driver information system faulty	static

This DTC B174404 is associated with symptom code 10485834, indicating a faulty multi-function display. The presence of this code confirms the underlying hardware issue with the virtual cockpit.

Diagnosis / Trigger Conditions

The root cause of the "Audi virtual cockpit fault B174404" is identified as a hardware issue within the Audi virtual cockpit itself. Specifically, it relates to the integrated graphics module. This issue can lead to the display of warning messages and unexpected reboots.

Audi implemented an optimized hardware solution for the integrated graphics module in production. This updated hardware was integrated into virtual cockpits manufactured on or after September 30, 2024. Therefore, the diagnosis process focuses on determining the instrument cluster's production date.

Important Warnings

Audi Technical Service Bulletin 2071281/3 explicitly states: "If the production date of the cluster is BEFORE 09/30/2024, then this TSB applies, and the Audi virtual cockpit must be replaced." This means that simply clearing the fault code will not resolve the underlying hardware problem, and replacement is necessary for affected units.

Repair Procedure Summary

The repair for the Audi virtual cockpit fault B174404 involves a specific diagnostic and replacement process. Technicians must first determine the production date of the instrument cluster using the vehicle's self-diagnosis system.

To do this, they will access diagnostic address 17 for the instrument cluster. Within the control module's OBD drop-down menu, they will select "Identification" and then "show expanded identification." Finally, expanding the "Fazit identification" will reveal and allow documentation of the "Day of manufacture."

If the instrument cluster's production date is found to be before September 30, 2024, the TSB mandates that the Audi virtual cockpit must be replaced. This replacement addresses the hardware issue with the integrated graphics module. Warranty claims for this repair should be processed using Service Number 9025 and Damage Code 0040, with specific labor operations for removal, installation, and self-diagnosis.

Owner Action

If you are experiencing the "Fault: Limited warning messages" in your Audi's virtual cockpit or if your virtual cockpit is unexpectedly rebooting, it is recommended to contact your authorized Audi dealership. Inform them about the symptoms and mention Technical Service Bulletin (TSB) 2071281/3. The dealership will be able to diagnose the issue, check the production date of your instrument cluster, and perform the necessary replacement if your vehicle is affected by the Audi virtual cockpit fault B174404.

This TSB, identified as Transaction No. 2071281/3, supersedes previous versions, including 2071281/2, and was most recently revised on April 9, 2025. Repairs performed under warranty will follow Audi's Warranty Policies and Procedures Manual.

Required Tools or Parts

The primary part required for this repair is a new instrument cluster (Audi virtual cockpit) with the updated hardware. No special tools beyond standard diagnostic equipment and those for instrument cluster removal and installation are explicitly mentioned in the TSB.

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Source: NHTSA ID: 11017634