2022-2025 Audi eCall Malfunction with DTC B200000

Symptoms of an eCall Malfunction

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

The verbatim warning message is:

• "Emergency call function: malfunction! Function unavailable. Please contact service"

Additionally, the eCall LED (light-emitting diode) may illuminate red, further signaling a fault within the system.

Associated Fault Codes (DTCs)

When diagnosing this issue, technicians will typically find a specific Diagnostic Trouble Code (DTC) stored in the vehicle's control modules. This DTC points to a fault within the Emergency Call Module and Communication Unit.

The primary DTC associated with this Audi eCall fault B200000 is:

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

This DTC B200000 indicates that the control module itself is reporting a fault, even if the underlying cause is a software anomaly rather than a hardware failure.

Diagnosis and Trigger Conditions

Audi has identified that the Audi eCall fault B200000 and the associated warning message are primarily caused by a software issue. The DTC B200000 is stored in the Emergency Call Module and Communication Unit (ConBox), also known as J949 (address word 0075), "without a good reason." This means the system incorrectly detects a fault due to suboptimal DTC setting conditions in the software.

Repair Procedure Summary

Technical Service Bulletin 2059528/12 outlines a two-part solution to address the eCall malfunction in affected 2022-2025 Audi vehicles. The core of the repair involves updating the software within the Emergency Call Module and Communication Unit (ConBox) to optimize DTC setting conditions.

Part 1: Initial Software Check and Update

1. ODIS Software Version: Ensure that the diagnostic software, ODIS, is updated to at least version 2024.04.00. This ensures access to the latest diagnostic and programming capabilities.
2. Control Module Program: Perform the "J949 – Control Module for Emergency Call Module and Communication Unit, check control module" program. This program is automatically integrated into the test plan when DTC B200000 is detected.
3. Verification: After the program runs, check if the DTC B200000 has been cleared and if the "Emergency call function: malfunction!" message has disappeared from the instrument cluster. If the message persists, repeat step 1.

Part 2: Guided Fault Finding

• For 2022, 2023, 2024, and 2025 Model Years: Technicians should perform Guided Fault Finding for any stored DTCs. This process will guide them through the necessary steps to resolve the issue.

Important Warnings for Owners

Owners should be aware of the warranty implications for this repair. If your vehicle is no longer covered by its original warranty, this Technical Service Bulletin 2059528/12 serves informational purposes only, and the repair may not be covered free of charge. It is always recommended to confirm warranty coverage with your authorized Audi dealer before proceeding with any service.

Owner Action

If your 2022-2025 Audi vehicle displays the "Emergency call function: malfunction! Function unavailable. Please contact service" warning or has a red eCall LED, it is recommended to contact an authorized Audi service center. Inform them about the symptoms and mention Technical Service Bulletin 2059528/12. They will be able to diagnose the Audi eCall fault B200000 and perform the necessary software update.

Source: NHTSA ID 11007347