2023-2024 Audi 12V Socket Not Working TSB U141500

Symptoms

Owners of 2023-2024 Audi vehicles, including the Audi e-tron 12V socket, may experience the following issues:

• The 12V socket is not providing power.
• The cigarette lighter is not functional.
• A blown fuse for the 12V outlet is discovered during diagnosis.

Fault Codes / DTCs

When the 12V socket or cigarette lighter is not working, a diagnostic trouble code (DTC) may be stored in the onboard supply control unit, J519 (address word 0009). The specific code is:

Code	Description	Module
U141500	Terminal 30-5, open circuit	J519 (Onboard Supply Control Unit)

Technical Background

The primary cause for the 12V socket or cigarette lighter failing is an electrical overload. Devices connected to the 12V sockets must not exceed a power rating of 120W. Additionally, connecting multiple devices to the sockets, even with an adapter, is not permitted and can lead to issues. This information is typically found in your vehicle's Owner's Manual.

When an excessive load is placed on the system, the overload protection within the adapter or the component itself can melt, leading to a short circuit. This short circuit then causes the vehicle's fuse to blow, cutting power to the affected socket.

Repair Procedure Summary

If you are experiencing issues with your Audi e-tron 12V socket or cigarette lighter, your technician will perform the following steps:

1. Check for Short Circuit: The technician will first measure for a short circuit at the 12V sockets. This helps determine if there's an ongoing electrical fault.
2. Fuse Replacement: If no short circuit is detected, the technician will replace the blown fuse. This is often the solution if the fuse has simply failed due to an overload.
3. Customer Advisory: You will be advised on the proper power ratings for the 12V sockets to prevent future occurrences. This includes reminders about the 120W limit and avoiding multiple device connections.

Important Warnings

• Warranty Information: This Technical Service Bulletin (TSB) is for informational purposes only and is not applicable to any Audi warranty. This means that any diagnosis or repair related to this issue may not be covered under your vehicle's standard warranty.
• Preventing Future Issues: To avoid repeat failures of your Audi e-tron 12V socket or cigarette lighter, it is crucial to adhere to the power rating limits (120W) for devices connected to these sockets. Do not connect multiple devices, even with an adapter, as this can lead to an overload and another blown fuse.

Owner Action

If your 12V socket or cigarette lighter is not working in your 2023-2024 Audi, it is recommended to schedule an appointment with an authorized Audi service center. While this TSB is informational and not covered by warranty, understanding the cause can help you prevent future problems. Ensure you discuss the power limitations of the 12V sockets with your service advisor.

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Source: NHTSA ID: 10232038