2022-2026 Audi Emergency Call System Fault TSB

Symptoms

Owners of affected 2022-2026 Audi vehicles may notice a specific warning message appearing in the instrument cluster. This message states: "Emergency call function: malfunction! Function unavailable. Please contact service." Additionally, the SOS LED associated with the emergency call system may illuminate red.

Fault Codes / DTCs

This issue is primarily linked to a specific diagnostic trouble code (DTC) stored in the vehicle's systems. This DTC indicates a fault within the emergency call module.

Code	Description	Module
B200000	Control module faulty	0075 - Emergency call module and communication unit

Diagnosis / Trigger Conditions

The root cause of the Audi emergency call system fault B200000 is identified as a software issue. The diagnostic trouble code B200000 is stored in the Emergency Call Module and Communication Unit (ConBox), also known as J949, without a genuine hardware malfunction. The software incorrectly triggers the fault condition, leading to the warning message and red SOS LED.

Repair Procedure Summary

The solution involves updating the software for the Emergency Call Module and Communication Unit (ConBox). The repair is typically performed in two parts, depending on the vehicle's model year.

Before starting, ensure the ODIS diagnostic system is updated to at least version 2025.02.00.

Part 1: Software Update for the Emergency Call Module

1. Access the test plan in ODIS. If the specific test program for J949 is not automatically displayed, change the test plan filter from "Standard" to "All" to make it visible.
2. Execute the program "J949 – Control Module for Emergency Call Module and Communication Unit, check control module." This program is automatically added to the test plan when DTC B200000 is logged.
3. After performing the program, check if the DTC B200000 has been erased and if the "Emergency call function: malfunction!" message has disappeared from the instrument cluster. If the message persists, repeat step 1. If the DTC still cannot be deleted after multiple attempts, proceed with Guided Fault Finding.

Part 2: Additional Software Packages (Model Year Dependent)

• For Model Years 2020 and 2021: A comprehensive software package is available that addresses several complaints, including the Audi emergency call system fault B200000. This package is detailed in TSB 2067021, which covers issues like MIB3 malfunctions (e.g., B129B11, B129C22, U044700).
• For Model Years 2022 and 2023 (and certain 2021 vehicles): A Customer Service Package software update is being developed to fix multiple control unit complaints. TSB 2076404 provides an overview of this deployment for MIB3/connectivity box/OCU3/LSR systems.
• For Model Years 2024 and 2025: A solution is currently under development for these model years, with an expected release in Q3/2025. Vehicles with DA005F software version >=40XX are included.

Required Tools or Parts

To perform this service, an authorized Audi dealership will utilize the following:

• ODIS diagnostic system (minimum version 2025.02.00).
• Specific software updates for the Emergency Call Module and Communication Unit, as detailed in the TSB and related service bulletins.

Owner Action

If you are experiencing the "Emergency call function: malfunction!" message or a red SOS LED in your 2022-2026 Audi, it is recommended to schedule an appointment with an authorized Audi dealer. They will be able to diagnose the issue, confirm the presence of the Audi emergency call system fault B200000, and apply the necessary software updates as outlined in TSB 2059528/15. Part 1 of this repair is typically covered under warranty. If your vehicle is outside of its warranty period, the TSB serves as informational guidance, and charges may apply.

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Source: NHTSA ID 11020351