2022-2024 Audi eCall Fault B200000 TSB 2059528/10

Symptoms

Owners of affected 2022-2024 Audi vehicles may observe the following:

• A warning message displayed in the instrument cluster stating: "Emergency call function: malfunction! Function unavailable. Please contact service".
• The eCall LED illuminating in red.

Fault Codes / DTCs

When diagnosing this concern, technicians will typically find the following Diagnostic Trouble Code (DTC) logged in the Emergency Call Module and Communication Unit (ConBox), identified as J949 (address word 0075):

Code	Description
B200000	Ctrl. Module Faulty

Diagnosis and Trigger Conditions

Audi has identified that the Audi eCall fault B200000 is primarily a software-related issue. The DTC is logged incorrectly, indicating a control module fault when there isn't a physical hardware defect. This condition is caused by suboptimal DTC setting conditions within the Emergency Call Module and Communication Unit (ConBox).

Repair Procedure Summary

Audi Technical Service Bulletin 91 24 23 2059528/10 outlines a two-part repair process to address the Audi eCall fault B200000:

Part 1: Diagnostic Check and DTC Erase

1. A technician will use the ODIS diagnostic system to perform the program "J949 – Control Module for Emergency Call Module and Communication Unit, check control module". This program is automatically initiated when the DTC B200000 is detected.
2. Following the program execution, the technician will verify if the DTC has been cleared and if the "Emergency call function: malfunction! Function unavailable. Please contact service" message is no longer present in the instrument cluster. If the message persists, the first step is repeated.

Part 2: Software Update (if applicable)

For 2020 and 2021 model year vehicles, a comprehensive software package may be necessary to resolve this and other potential issues. This specific software update is detailed in separate service bulletins: Cluster 35 service update TSB 2067021 (for MY 2020) or recall 91DZ (for MY 2021). These documents provide instructions for distributing and applying the required software package.

Required Tools or Parts

To perform the diagnostic and repair procedures outlined in TSB 91 24 23 2059528/10, technicians must use the ODIS diagnostic system. It is crucial that the ODIS version is at least 2024.04.00. No specific replacement parts are typically required for this particular TSB, as the primary solution involves software optimization.

Important Warnings

• If your vehicle's warranty coverage has expired (beyond 48 months or 50,000 miles), this Technical Service Bulletin serves as informational guidance only, and any repair costs may not be covered by Audi.

Owner Action

If you observe the "Emergency call function: malfunction! Function unavailable. Please contact service" warning in your instrument cluster or notice a red eCall LED, it is recommended to contact your authorized Audi dealer. This issue is generally covered under the new vehicle limited warranty for up to 48 months or 50,000 miles. The dealer will perform the necessary diagnostic checks and apply the relevant software updates to resolve the Audi eCall fault B200000.

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Source: NHTSA ID: 11002953