2023 Audi e-tron SOS Malfunction TSB 2074410/2

Owners of 2023 Audi A5, A6, A7, A8, Q5, Q7, Q8, S5, S6, S7, S8, RS 5, RS 6 Avant, RS 7, SQ5, SQ7, SQ8, e-tron, e-tron Sportback, e-tron GT, and RS e-tron GT models may experience an Audi e-tron SOS malfunction indicated by a specific warning message on the instrument cluster. This issue, addressed by Audi Technical Service Bulletin (TSB) 91 24 27 2074410/2, points to a software-related problem within the vehicle's Emergency Call Module and Communication Unit, also known as the ConBox -J949-.

This TSB, which supersedes TSB Group 91 number 24-22 dated June 28, 2024, provides a comprehensive solution to restore full functionality of the emergency call system and related features.

Symptoms

If your 2023 Audi is affected by this issue, you will likely observe the following symptoms:

• A specific message displayed on the instrument cluster: "SOS Emergency Call function: malfunction. Function unavailable. Please contact service".
• Limited Bluetooth functionality, impacting connectivity with devices.
• Limited Wi-Fi functionality, affecting in-car internet access.
• Connected features may not be usable.
• The eCall LED (Emergency Call light-emitting diode) will not be lit.

These symptoms collectively indicate a problem with the vehicle's communication systems, specifically the Emergency Call Module and Communication Unit.

Fault Codes / DTCs

Technicians diagnosing the Audi e-tron SOS malfunction may find specific Diagnostic Trouble Codes (DTCs) logged in the vehicle's control modules. These codes help pinpoint the exact nature of the software malfunction.

Code	Description	Module	Condition
U13EB00	Emergency call module and communication unit Flight mode active	Emergency Call Module and Communication Unit (ConBox) -J949- (address word 0075)	Active/Static
U164200	Ethernet Emergency Call Module no communication	Data Bus Onboard Diagnostic Interface - J533- (address word 0019)	Passive/Sporadic
U142100	Control module for emergency call module and communication unit no communication	Data Bus Onboard Diagnostic Interface - J533- (address word 0019)	Passive/Sporadic

Diagnosis and Trigger Conditions

Diagnosis typically involves reproducing the customer complaint and checking for the presence of the aforementioned DTCs. The underlying cause is identified as a software-related malfunction within the Emergency Call Module and Communication Unit (ConBox) -J949-.

Important Warnings for High-Voltage Vehicles

For vehicles equipped with high-voltage components, a critical safety precaution must be observed during the repair process:

• To prevent charging of the high-voltage battery during the software update, the high-voltage cable is to be removed BEFORE the entry of the SVM code on vehicles with high-voltage components.
• Charging the high-voltage battery during a software update can damage the high-voltage components.

This step is crucial to prevent potential damage to the vehicle's high-voltage system during the software update procedure.

Repair Procedure Summary

The service solution for the Audi e-tron SOS malfunction involves a software update to the Emergency Call Module and Communication Unit (ConBox) -J949-. This update is performed using the ODIS-Tester diagnostic tool.

1. On the ODIS-Tester, technicians must select "Only allow DoIP communication" under Admin >> General >> GFF Process. This setting will automatically reset upon exiting the diagnostic session.
2. The Emergency Call Module and Communication Unit (ConBox) -J949- (address word 0075) is then updated via a specific SVM code. The ODIS operating mode "Flashing" is used to enter the SVM code.
3. The required SVM code for this update is 75A029.
4. After the software update is completed, technicians must verify that the eCall LED status is green and that the Emergency Call Module and Communication Unit (ConBox) -J949- identifies with Software Version 0497.

This procedure ensures the proper installation of the updated software and restoration of the system's functionality.

Owner Action

If you own a 2023 Audi model and are experiencing the "SOS Emergency Call function: malfunction" message or any of the related symptoms, you should contact your authorized Audi dealership. The repair involves a software update that must be performed by a qualified technician using specialized diagnostic equipment.

This Technical Service Bulletin (TSB 91 24 27 2074410/2) is informational only if your vehicle is outside of its warranty period. However, for vehicles under warranty, this software update is typically covered. All warranty claims must adhere to the Audi Warranty Policies and Procedures Manual. The service number associated with this repair is 9145, with a damage code of 0039.

Source Citation

NHTSA ID: 11005930