2021-2026 Audi Emergency Call System Fault TSB 2059528/14

Owners of various 2021-2026 Audi models may encounter a warning message indicating a malfunction in the emergency call system. This issue, often accompanied by a red SOS LED, is addressed by Audi Technical Service Bulletin (TSB) 2059528/14, released on April 14, 2025. The bulletin identifies a software-related problem within the vehicle's Emergency Call Module and Communication Unit, also known as the ConBox High system.

This TSB provides diagnostic and repair procedures for dealerships to resolve the underlying software issue, which can lead to the storage of a specific Diagnostic Trouble Code (DTC) without a legitimate hardware fault. If you own a 2021 Audi e-tron emergency call fault or other affected Audi model, understanding this bulletin can help you communicate effectively with your service center.

Symptoms

Owners will typically notice a specific warning message displayed in the instrument cluster. This message indicates a problem with the vehicle's emergency call functionality.

• "Emergency call function: malfunction! Function unavailable. Please contact service"
• A red SOS light illuminated on the dashboard.

Fault Codes / DTCs

When diagnosing this issue, technicians will find a specific Diagnostic Trouble Code (DTC) stored in the Emergency Call Module and Communication Unit (ConBox), identified as J949 (address word 0075).

• DTC B200000: Control module faulty (active / static).

Diagnosis / Trigger Conditions

The root cause of the 2021 Audi e-tron emergency call fault is a software issue. The DTC B200000 is stored in the system without a genuine hardware malfunction. This means the control module is reporting a fault incorrectly due to an optimization need in its software logic.

Repair Procedure Summary

The repair for this emergency call system fault is divided into two parts, starting with a diagnostic and clearing procedure, followed by potential software updates depending on the vehicle's model year.

Part 1: Initial Diagnostic and DTC Clearing

1. Technicians must perform the diagnostic program "J949 – Control Module for Emergency Call Module and Communication Unit, check control module" using the ODIS system. This program is automatically added to the test plan when DTC B200000 is logged.
2. If the program is not automatically entered, technicians can manually select it under the path: Self-test >> Diagnostic capable systems >> 0075 – Control Module for Emergency Call Module and Communication Unit -J949- >> 0075 – Electrical components >> Control Module for Emergency Call Module and Communication Unit, check control module.
3. After running the program, the technician will check if the DTC has been erased and if the warning message has disappeared from the instrument cluster. If the message persists, Part 1 should be repeated.

Important Warning: If the DTC cannot be deleted even after performing Part 1 multiple times, technicians are instructed to perform Guided Fault Finding for this DTC.

Part 2: Software Updates (Model Year Dependent)

• For model years 2020 and 2021: A software package is available to address this and other complaints. Further details on this software package and its distribution are found in TSB 2067021, titled "91 MIB3: Garage opener/SXM/Online Radio or other malfunctions B129B11, B129C22, B123B13, B123C13, U044700 or B200000 (MY 2020) or recall 91DZ (MY 2021)".
• For model years 2022 and 2023 (plus certain 2021 vehicles): Another software package is being developed for these model years. Information on its deployment and billing is available in TSB 2076404, titled "00 Deployment overview for customer service packages MLB and MQB for MIB3/connectivity box/OCU3/LSR".
• For model years 2024 and 2025: A customer service measure is currently under development, with a solution anticipated in Q3/2025.

Required Tools or Parts

Technicians must use the most current ODIS version, with a minimum requirement of ODIS > 2025.02.00, to perform the diagnostic and software update procedures outlined in TSB 2059528/14.

Owner Action

If your Audi vehicle displays the "Emergency call function: malfunction!" message or a red SOS light, you should schedule an appointment with an authorized Audi dealership. The dealership will diagnose the issue using the procedures outlined in TSB 2059528/14 and apply the necessary software updates. Part 1 of the repair should be invoiced via this TSB, while Part 2 will be invoiced via its applicable TSB. If your vehicle is outside of warranty, this Technical Service Bulletin serves as informational guidance only.

Revision History

This Technical Service Bulletin has undergone several revisions:

• Revision 14: Revised Service section with updated verbiage.
• Revision 13 (02/25/2025): Revised header to include MY25, updated ODIS version requirement, and separated instructions for additional model years.
• Revision 12 (08/30/2024): Revised header to include MY25 Q7.

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Source: NHTSA ID: 11017614