2022-2025 Audi e-tron Emergency Call System Fault TSB

Symptoms

Owners of affected Audi vehicles may observe a specific warning message displayed in the instrument cluster. This message indicates a problem with the emergency call system.

The warning reads: "Emergency call function: malfunction! Function unavailable. Please contact service." Additionally, the SOS LED light may appear red, signaling an active fault in the system. This indicates an active Audi e-tron emergency call fault.

Fault Codes / DTCs

When diagnosing the "Emergency call function malfunction" issue, technicians will typically find a specific Diagnostic Trouble Code (DTC) stored in the Emergency Call Module and Communication Unit (ConBox), identified as J949.

Code	Description	Module
B200000	Ctrl. Module Faulty (active / static)	Emergency Call Module and Communication Unit (ConBox), J949

Other related DTCs that may be addressed by comprehensive software updates for model years 2020 and 2021 include B129B11, B129C22, B123B13, B123C13, and U044700, as referenced in associated service bulletins.

Diagnosis / Trigger Conditions

The root cause of the Audi e-tron emergency call fault and the associated DTC B200000 is identified as a software issue within the Emergency Call Module and Communication Unit (ConBox). The DTC is stored incorrectly, without an actual hardware malfunction.

Audi has implemented optimized software versions for the ConBox module to address this issue. These new software versions have been deployed in production vehicles since calendar week 29 of 2024.

Repair Procedure Summary

The solution to this complaint involves a two-part process, with specific instructions for different model years. Dealers must ensure they are using the most current ODIS version (minimum 2025.02.02) for diagnosis and repair, with full applicability of this TSB after November 26, 2025.

Part 1: Initial Diagnostic and Software Update

1. Run Diagnostic Program: From the ODIS test plan, perform the program "J949 – Control Module for Emergency Call Module and Communication Unit, check control module." This program is automatically added if DTC B200000 is logged.
2. Check DTC Erasure: After running the program, verify if the DTC has been erased and if the warning message has disappeared from the instrument cluster. If the message persists, repeat step 1.
3. Guided Fault Finding: If the DTC cannot be deleted after multiple attempts, technicians should proceed with Guided Fault Finding for DTC B200000.

Part 2: Comprehensive Software Packages

For certain model years, a broader software package update is available to address multiple complaints, including the Audi e-tron emergency call fault. These updates are detailed in separate TSBs:

• Model Years 2020 and 2021: Refer to TSB 2067021, "Cluster 35 service update." This update addresses various malfunctions, including DTCs B129B11, B129C22, B123B13, B123C13, U044700, B200000, and recall 91DZ.
• Model Years 2022 and 2023: Refer to TSB 2076404, "00 Deployment overview for customer service packages MLB and MQB for MIB3/connectivity box/OCU3/LSR." This TSB describes a software package designed to fix several issues.
• Model Years 2024 and 2025 (and certain 2023 models with DA005F SW >=40XX): Refer to TSB 2079416, "91 MMI: overview of customer service packages MLB and MQB for MIB3/ConBox/OCU3/AED2/gateway after UNECE deployment." This package also addresses multiple control unit complaints.

If the Emergency Call Module and Communication Unit (ConBox), J949 (DA0075) already has one of the following software versions (0498, 0512, 0513, 0740, 0750, 0751), the update described in Part 1 is not necessary as it has already been installed.

Owner Action

If you are experiencing the "Emergency call function malfunction" warning or the SOS LED is red in your 2022-2025 Audi e-tron or other affected Audi model, it is recommended to schedule an appointment with an authorized Audi service center. The repair involves software updates that must be performed by a qualified technician using specialized diagnostic tools. This TSB is applicable for service performed after November 26, 2025.

For vehicles still under warranty, this repair (Part 1) will typically be covered. The service number for this specific repair is 9145, with a damage code of 0039. If your vehicle is outside of warranty, this Technical Service Bulletin serves as informational guidance, and costs may apply. Billing for Part 2 software packages will follow the accounting instructions outlined in their respective TSBs.

---

Source: NHTSA ID 11026208