2023-2026 Audi Emergency Call System Fault TSB 2059528/13

The "Emergency call function: malfunction! Function unavailable. Please contact service" warning message, often displayed in the instrument cluster with a red LED, indicates a potential issue with your Audi's emergency call system. This condition is typically linked to Diagnostic Trouble Code (DTC) B200000, which points to a control module fault within the emergency call module and communication unit (ConBox High, J949). This specific Audi emergency call fault is addressed by Audi Technical Service Bulletin (TSB) 2059528/13.

Symptoms of the Emergency Call System Fault

Owners will primarily notice the explicit warning message "Emergency call function: malfunction! Function unavailable. Please contact service" appearing in their vehicle's instrument cluster. This visual alert is often accompanied by a red LED indicator, signaling a problem with the emergency call (SOS) system. This Audi emergency call fault means the system may not function as intended in an emergency.

Fault Codes / DTCs

The primary diagnostic trouble code associated with this issue is:

Code	Description	Diagnostic Address	Storage State
B200000	Ctrl. Module Faulty.	0075 - Emergency call module and communication unit (J949)	static

Diagnosis and Trigger Conditions

Audi has identified that DTC B200000, in this context, is often stored due to a software issue rather than a genuine hardware fault. The control module is incorrectly reporting a fault condition. This means the Audi emergency call fault is not necessarily a sign of physical damage but rather a misinterpretation by the system's software.

Repair Procedure Summary

The repair for this condition, as detailed in TSB 2059528/13, involves a two-part process focusing on software updates and diagnostics.

Part 1: Initial Diagnostic and DTC Clearance

1. A technician will perform a diagnostic program called "J949 – Control Module for Emergency Call Module and Communication Unit, check control module" using the ODIS diagnostic system. This program is automatically suggested if DTC B200000 is logged.
2. After running the program, the technician will check if the DTC has cleared and if the "Emergency call function: malfunction!" message has disappeared from the instrument cluster.
3. If the DTC does not clear or the message persists, the technician will repeat the diagnostic step or proceed with Guided Fault Finding for the DTC.

Part 2: Software Package Update

This part involves updating the software for the affected control units. The specific software package depends on the vehicle's model year:

• Model Years 2020 and 2021: A software package addressing multiple control unit complaints, including DTC B200000, is available. This is described in TSB 2067021, which covers issues like "MIB3: Garage opener/SXM/Online Radio or other malfunctions" and other DTCs such as B129B11, B129C22, B123B13, B123C13, U044700, and recall 91DZ.
• Model Years 2022 and 2023: A separate Customer Service Package software update is available for these model years, as outlined in TSB 2076404. This package addresses various complaints related to MIB3/connectivity box/OCU3/LSR for MLB and MQB platforms.
• Model Years 2024 and 2025: A customer service measure and solution for these model years are currently under development and are expected to be available in Q3/2025.

Important Warnings for Owners and Technicians

• ODIS Program Visibility: If the diagnostic program is not automatically displayed in the ODIS test plan, the filter setting may need to be changed from "Standard" to "All" to make it visible and ready for use.
• Persistent DTCs: If DTC B200000 cannot be deleted even after multiple attempts of Part 1, technicians are advised to perform Guided Fault Finding for the DTC.
• Warranty Coverage: If your vehicle is outside of its warranty period, this Technical Service Bulletin is informational only, implying that the repair costs may not be covered by Audi.

Owner Action

If you are experiencing the "Emergency call function: malfunction! Function unavailable. Please contact service" warning or suspect an Audi emergency call fault in your 2023-2026 Audi vehicle, it is recommended to schedule an appointment with an authorized Audi service center. They will be able to diagnose the issue using the ODIS system and apply the necessary software updates as described in TSB 2059528/13 and related bulletins. Ensure you inquire about warranty coverage if your vehicle is no longer under its original factory warranty.

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Source: NHTSA ID 11015771