2023 Audi SOS Emergency Call Malfunction TSB 91 24 22 2074410/1

Symptoms of the 2023 Audi SOS Malfunction

Owners of affected 2023 Audi vehicles may notice several issues related to the emergency call system and connectivity. The primary indicator is a warning message displayed on the instrument cluster.

Key symptoms include:

• The message "SOS Emergency Call function: malfunction. Function unavailable. Please contact service" appears, as visually represented in the TSB's Figure 1, an "Emergency call warning message."
• Bluetooth functionality is limited.
• WiFi functionality is limited.
• Connected features cannot be used.
• The eCall LED is not lit.

Fault Codes (DTCs)

When diagnosing the 2023 Audi SOS malfunction, technicians may find specific Diagnostic Trouble Codes (DTCs) stored in the vehicle's systems. These codes point to issues within the Emergency Call Module and Communication Unit (ConBox) -J949- and the Data Bus On Board Diagnostic Interface -J533-.

Code	Description	Module
U13EB00	Emergency call module and communication unit Flight mode active (active/static)	Emergency Call Module and Communication Unit (ConBox) -J949- (address word 0075)
U164200	Ethernet Emergency Call Module no communication (passive/sporadic)	Data Bus On Board Diagnostic Interface -J533- (address word 0019)
U142100	Control module for emergency call module and communication unit no communication (passive/sporadic)	Data Bus On Board Diagnostic Interface -J533- (address word 0019)

Technical Background

Audi has identified the root cause of the 2023 Audi SOS malfunction as a software-related issue within the vehicle's communication systems. This Technical Service Bulletin, 91 24 22 2074410/1, specifically addresses these software anomalies to restore full functionality.

Important Warnings

For 2023 Audi vehicles equipped with high-voltage components, specific precautions must be taken during the software update to prevent damage:

• High-voltage cable removal: 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.
• Risk of damage: Charging the high-voltage battery during a software update can damage the high-voltage components.

Repair Procedure Summary

The solution for the 2023 Audi 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 system and is detailed in Technical Service Bulletin 91 24 22 2074410/1.

Technicians will need to:

1. Connect the ODIS-Tester diagnostic tool to the vehicle.
2. Select “Only allow DoIP communication” under the Admin >> General >> GFF Process menu within the ODIS-Tester. This setting automatically resets upon exiting the diagnostic session.
3. Update the Emergency Call Module and Communication Unit (ConBox) -J949- (address word 0075) using the SVM code 75A029. The ODIS operating mode should be set to “Flashing” for this procedure.
4. Follow any additional instructions provided by the ODIS tester during the update process.

After the software update, technicians must verify the following to ensure the repair is successful:

• The status of the eCall LED is green.
• The Emergency Call Module and Communication Unit (ConBox) -J949- identifies with Software Version 0497.

This Technical Service Bulletin 91 24 22 2074410/1 also closes a prior issue identified as PSS 2071693, which covered