2024-2025 Audi Steering Warning Lamp TSB B200000 B200FF4

Symptoms

Owners of affected 2024-2025 Audi models, including the Audi A5, may notice a specific issue upon starting the engine. The primary symptom is the illumination of the "yellow steering warning lamp lights up" on the instrument cluster. Concurrently, drivers will experience a reduction in "power steering assistance is reduced", making the steering feel heavier than usual.

Fault Codes / DTCs

When diagnosing this condition, technicians may find specific Diagnostic Trouble Codes (DTCs) stored in the steering control unit (diagnostic address 0044). These codes indicate a software-related problem within the power steering system. The relevant DTCs are:

• B200000 with symptom 4176
• B200FF4 with symptom 16712020
• Alternatively, B200000 with symptom 4432

These DTCs are often found in conjunction with software version SW 0172 and VW-Audi part number 8W0909144N for the steering control unit.

Technical Background

Audi has identified that the root cause of the illuminated yellow steering warning lamp and reduced power steering assistance is a software issue within the steering control unit. This issue affects various 2024-2025 Audi models, including the Audi A5, and can be resolved through a software optimization.

Important Warnings for Technicians and Owners

Audi Technical Service Bulletin 48 24 69 2074847/1 includes critical advisories to ensure correct repair procedures and prevent further issues:

• SVM Code vs. Login Code: "Please ensure that you do not confuse the SVM code with the login code when entering the code!" This highlights the importance of correctly identifying and inputting the specific codes during the software update process.
• Factory Reset Caution: For vehicles with a start/stop system, a factory reset of the steering control unit (J500) is part of the procedure. However, technicians are warned: "Only perform option -2- if you are instructed to do so by a TSB or Technical Assistance Center (TAC)." This prevents unnecessary resets that could lead to further complications.

Repair Procedure Summary

Technical Service Bulletin 48 24 69 2074847/1 outlines a software update as the solution for the yellow steering warning lamp and reduced power steering assistance. This TSB supersedes the previous Pending Service Solution (PSS) TSB 2073087, which also addressed DTCs B200000 and B200FF4 in the J500 control unit.

The repair process varies slightly depending on whether the vehicle is equipped with a start/stop system:

For Vehicles Without Start/Stop System

1. Perform a software update of the steering system using the following SVM codes:
   • First, input code 44A041.
   • Then, input code 44B041.
2. After the update, if the red steering warning lamp illuminates, switch the ignition off and on again.
3. Erase all event memory entries (DTCs).

For Vehicles With Start/Stop System

1. First, reset the steering control unit (J500, diagnostic address 0044) to factory settings using Guided Functions.
   • Access the basic settings for the test program.
   • Use login code 1181 for the program "0044 - Reset all adaptation values / adapt end stops".
   • Select option "2" (reset to factory settings).
   • Manually confirm the reset completion if the tester does not automatically report it.
   • Verify that the coding in control unit J500 (address 0044) under Identification is set to "00000000000000". If not, repeat the reset.
2. Perform a software update of the steering system using the following SVM codes:
   • First, input code 44A041.
   • Then, input code 44B041.
3. After the update, if the red steering warning lamp illuminates, switch the ignition off and on again.
4. Erase all DTCs.

Required Tools or Parts

This repair primarily involves a software update. Technicians will need access to the appropriate diagnostic equipment and the latest software. The updated software version is 1181, replacing the older version 0172. The new software part number is 8W0909144P, which updates from either 8W0909144N or an earlier 8W0909144P version. Technicians should also refer to TSB 20117352 for "00 Software Version Management (SVM), operating instructions" to ensure proper execution of the update.

Owner Action

If your 2024-2025 Audi A5, A4, S4, S5, or RS 5 is displaying the yellow steering warning lamp and you are experiencing reduced power steering assistance, it is recommended to visit an authorized Audi dealer. They will be able to diagnose the issue, confirm the presence of DTCs like B200000 or B200FF4, and perform the necessary software update as outlined in TSB 48 24 69 2074847/1. This repair is typically covered under warranty.

Warranty Information

Warranty claims for this issue should be submitted in accordance with the Audi Warranty Policies and Procedures Manual. The Service Number for this repair is 4835, and the Damage Code is 0040. Claims should reference TSB 2074847/1.

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Source: NHTSA ID 11007316