2021-2025 Audi Emergency Call System Fault TSB

Owners of certain 2021-2025 Audi vehicles may observe an "Emergency call function: malfunction! Function unavailable. Please contact service" warning message displayed in the instrument cluster. This warning is typically accompanied by a red LED on the SOS button, indicating a fault with the emergency call system. This issue, often linked to Diagnostic Trouble Code (DTC) B200000, points to a problem within the Emergency Call Module and Communication Unit, also known as ConBox High (J949).

Audi Technical Service Bulletin (TSB) 2059528/18 details that the root cause is a software anomaly within the ConBox High module. This TSB outlines a two-part solution involving software updates to correct the erroneous fault detection and restore proper functionality to the emergency call system. Addressing this Audi e-tron SOS fault is crucial for maintaining vehicle safety features.

Symptoms

Vehicle owners will primarily notice the following in their instrument cluster:

• A warning message stating: "Emergency call function: malfunction! Function unavailable. Please contact service"
• A red LED illuminated on the SOS button.

Fault Codes / DTCs

The primary diagnostic trouble code associated with this issue is:

• DTC B200000: Ctrl. Module Faulty (active / static) - Stored in the Emergency Call Module and Communication Unit (ConBox), J949 (address word 0075).

Other related DTCs that may be addressed by the broader software packages mentioned in this TSB include B129B11, B129C22, B123B13, B123C13, and U044700.

Diagnosis / Trigger Conditions

The TSB clarifies that DTC B200000 is stored due to a software issue, rather than a physical fault with the ConBox High module itself. The system incorrectly detects a malfunction, leading to the warning message and the red SOS LED. This condition affects vehicles equipped with ConBox High and PR Codes IW1, IW3, or IW6.

Important Warnings

Owners and technicians should be aware of the following critical information:

• Software Version Requirement: "Please note that all software versions (including 05xx and 07xx) were only included in the measure described under Part 1 from TSB revision 2059528/17, 91 ConBox High: Emergency call (SOS) fault/LED red, with DTC B200000 and ODIS version 2025.11.02 onward. Please ensure that this TSB was performed after November 12, 2025, before sending feedback."
• Persistent DTC: "If the DTC cannot be deleted even after performing part 1 multiple times, please perform Guided Fault Finding for this DTC."
• Unnecessary Update: "If the Emergency Call Module and Communication Unit (ConBox), J949 (DA 0075) already has one of the following software versions, the update is not necessary as it has already been installed: 0498, 0512, 0513, 0740, 0750, 0751."

Repair Procedure Summary

The solution to the Audi e-tron SOS fault involves a two-part process, as detailed in TSB 2059528/18:

Part 1: Initial Diagnostic and Software Check

1. ODIS Version Check: Ensure the diagnostic system is running the most current ODIS version (at least 2025.11.02).
2. Test Program Execution: 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. Alternatively, it can be found under 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. DTC Verification: After running the program, check if the DTC has been erased and the warning message has disappeared from the instrument cluster. If the message persists, repeat step 1.
4. Guided Fault Finding: If the DTC cannot be deleted after multiple attempts, proceed with Guided Fault Finding for DTC B200000.

Part 2: Software Update Package

An update package has been developed to address various complaints, including the Audi e-tron SOS fault, for specific hardware and software combinations. The applicable TSB for this part depends on the vehicle's model year:

• Model Years 2020 and 2021: Refer to TSB 2067021 (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 software package distribution and use.
• Model Years 2022 and 2023 (and certain 2021 vehicles): Refer to TSB 2076404 (00 Deployment overview for customer service packages MLB and MQB for MIB3/connectivity box/OCU3/LSR) for software package distribution and use.
• Model Years 2024 and 2025 (and MY2023 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) for software package distribution and use.

Required Tools or Parts

The primary tool required for this repair is the Offboard Diagnostic Information System (ODIS) with version 2025.11.02 or newer.

Owner Action

If your 2021-2025 Audi vehicle displays the "Emergency call function: malfunction!" warning or has a red SOS LED, it is recommended to schedule an appointment with an authorized Audi service center. They will be able to diagnose the issue using the latest ODIS software and apply the necessary software updates as outlined in TSB 2059528/18 and its associated bulletins. This service is typically covered under warranty if the vehicle qualifies.

Warranty Information

For warranty claims related to this TSB:

• Claim Type: If the vehicle is outside of any warranty, this Technical Service Bulletin is informational only.
• Service Number: 9145
• Damage Code: 0039
• Labor Operations:
  • GFF (0150 0010): See SRT with associated operations.
  • GFF (0150 0060): Labor according to the diagnostic log.
• Claim Comment: As per TSB 2059528/18.

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Source: NHTSA ID: 11030991