2022-2024 Audi SOS Emergency Call Warning TSB 2076052/2

Owners of certain 2022-2024 Audi vehicles equipped with the ConBox High system may encounter an intermittent Audi SOS emergency call warning message in their instrument cluster. This issue is addressed by Audi Technical Service Bulletin (TSB) 2076052/2, which identifies a software problem within the vehicle's emergency call system.

This TSB, released on April 14, 2025, for the United States market, provides guidance to technicians on how to handle customer complaints regarding this specific warning.

Symptoms

Drivers will observe the following warning message displayed in the instrument cluster:

• "Emergency call function: fault. Function restricted. Please contact workshop."

This Audi SOS emergency call warning is not permanent. It typically disappears after the ignition is switched off and on again, or after a bus sleep cycle. Despite the warning, there are no relevant diagnostic trouble codes (DTCs) stored statically in the emergency call module control unit and communication unit -J949- (address word 0075).

Fault Codes / DTCs

While no static DTCs are present, the following intermittent DTCs may be stored in the data bus diagnostic interface -J533- (address word 0019):

• U142100: Control module for emergency call module and communication unit no communication - sporadic.
• U164200: Ethernet Emergency Call Module no communication - sporadic.

Technical Background

The root cause of the Audi SOS emergency call warning is a software issue within the emergency call module control unit and communication unit -J949-. This software anomaly leads to the intermittent communication errors and the subsequent warning message displayed to the driver.

Important Warnings

Audi has provided specific instructions for technicians and owners regarding this issue:

• Do not replace any components for this condition since this will not resolve the customer's concern. Replacing parts will not fix the underlying software problem.
• Replacing parts or attempting repairs will not fix the problem. Unjustified labor/replacement parts will be charged back. Invoicing under warranty is not permitted for this issue. This emphasizes that any unauthorized attempts to replace components will not be covered under warranty and will result in charges.

Repair Procedure Summary

As of the TSB's release, a permanent production solution is being developed and is expected to be implemented with Model Year 2026 vehicles. For affected 2022-2024 models, a definitive repair is anticipated to be available by the end of the second quarter of 2025. Until then, no repairs are necessary.

Technicians are instructed to explain this timeline to customers. The primary action for dealers is to create a Pending Service Solutions (PSS) record in the PSS application via AccessAudi. In some cases, a terminal 30 reset of the emergency call module control unit and communication unit -J949- may temporarily restore normal operation, but this is not a permanent fix.

Owner Action

If your 2022-2024 Audi is displaying the "Emergency call function: fault" message, you should contact your authorized Audi dealer. While a permanent fix is not yet available, reporting the issue allows the dealer to document your concern and create a PSS record, which is crucial for tracking the problem and ensuring you are notified once the solution becomes available. Do not attempt to replace any components yourself, as this will not resolve the Audi SOS emergency call warning and may incur unnecessary costs.

NHTSA ID: 11017641