2020-2026 Audi Emergency Call Fault B200000

Owners of various 2020-2026 Audi models equipped with ConBox High may encounter an Audi emergency call fault B200000, indicated by a warning message in the instrument cluster and a red SOS LED. This condition is addressed by Audi Technical Service Bulletin (TSB) 2059528/15, released on June 13, 2025. This TSB has undergone several revisions, with Revision 15 updating the header with added model years, and Revision 14 (April 14, 2025) revising the service verbiage.

Symptoms

Drivers will typically observe the following in their vehicle's instrument cluster:

• A warning message stating: "Emergency call function: malfunction! Function unavailable. Please contact service"
• The SOS LED may illuminate red, indicating a fault with the emergency call system.
• Other reported complaints include general "functionality" issues with Telematics and online services, "error messages" related to automatic emergency call and emergency call data transfer, and "fault stored in the DTC memory" during Guided Fault Finding (GFF).

These symptoms point to a problem with the emergency call module, which is crucial for safety and telematics services.

Fault Codes / DTCs

The primary diagnostic trouble code associated with this Audi emergency call fault B200000 is:

Diagnostic Trouble Code	Fault Symptom	Storage State
B200000	Control module faulty	static

This DTC is stored in the Emergency Call Module and Communication Unit (ConBox), identified as J949 (address word 0075).

Technical Background

Audi has identified that the Audi emergency call fault B200000 is a software-related issue. The DTC B200000, indicating a 'Control module faulty,' is stored without a valid underlying reason. This means the hardware itself is not necessarily defective, but the software incorrectly flags a fault.

To resolve this, new software versions for the Emergency Call Module and Communication Unit (ConBox) have been developed. These updates aim to optimize the conditions under which the DTC is set, preventing false error reports. These production solutions have been deployed since Calendar Week 23 of 2024.

Repair Procedure Summary

The repair process outlined in TSB 2059528/15 involves two main parts, focusing on software updates and diagnostic checks. Technicians must ensure they are using the most current ODIS Version (minimum > 2025.02.00) before beginning.

Part 1: Diagnostic and DTC Erasure

1. Access Test Program: From the ODIS test plan, perform the program "J949 – Control Module for Emergency Call Module and Communication Unit, check control module". This program should automatically appear due to the logged DTC B200000. If it does not, the test plan filter in ODIS can be changed from "Standard" to "All" to make it visible. The function can also be found manually in ODIS 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.
2. Check and Erase DTC: After performing the program, check if the DTC B200000 has been erased and if the "Emergency call function: malfunction! Function unavailable. Please contact service" message has disappeared from the instrument cluster. If the message is still shown, repeat step 1. Otherwise, continue with Part 2.

Important Warning

If the DTC B200000 cannot be deleted even after performing Part 1 multiple times, technicians are instructed to perform Guided Fault Finding specifically for this DTC.

Part 2: Software Updates for Specific Model Years

Part 2 involves applying specific software packages depending on the vehicle's model year.

• Model Years 2020 and 2021: A software package has been developed to address multiple complaints in a single repair. This is detailed in TSB 2067021, titled "91 MIB3: Garage opener/SXM/Online Radio or other malfunctions B129B11, B129C22, B123B13, B123C13, U044700 or B200000 (MY 2020) or recall 91DZ (MY 2021)". This TSB describes the distribution and usage of this software package.
• Model Years 2022 and 2023 (+ certain vehicles from 2021): A "Customer Service Package" software update is being developed to fix several complaints across a group of control units. TSB 2076404, titled "00 Deployment overview for customer service packages MLB and MQB for MIB3/connectivity box/OCU3/LSR", outlines how this software package will be distributed and used. Billing for this part is done via the accounting instructions in the respective TSB.
• Model Years 2024 and 2025: For vehicles from model years 2024 and 2025, a customer service measure is currently under development, with a solution expected in Q3/2025.

Warranty Information

Part 1 of this repair should be invoiced under TSB 2059528/15. Part 2 should be invoiced via the applicable TSB for that specific part.

• 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 2059528/15

All warranty claims must comply with the Audi Warranty Policies and Procedures Manual and are subject to review or audit by Audi Warranty.

Owner Action

If you are experiencing the "Emergency call function: malfunction! Function unavailable. Please contact service" message or a red SOS LED in your 2020-2026 Audi, it is recommended to schedule an appointment with an authorized Audi service center. Provide them with the details of your symptoms and mention Technical Service Bulletin (TSB) 2059528/15. The repair involves diagnostic steps and software updates that must be performed by a qualified technician using specialized Audi diagnostic equipment (ODIS).

NHTSA ID: 10255397