2021-2024 Audi Rear Wheel Steering Malfunction TSB

Symptoms

Owners of affected Audi vehicles may observe a "Steering malfunction warning" displayed in the instrument cluster. This warning indicates a potential problem with the Audi rear wheel steering malfunction system.

Fault Codes / DTCs

When diagnosing the Audi rear wheel steering malfunction, technicians may find one or more of the following Diagnostic Trouble Codes (DTCs) logged in the rear axle wheel steering control module, J1019 (address word 00CB):

Code	Symptom Code	Description
B200FF0	251 and/or 129	Rear axle wheel steering malfunction
C12A329	224	Rear axle wheel steering malfunction

Diagnosis and Trigger Conditions

The presence of DTC B200FF0 or C12A329 in the J1019 rear axle wheel steering control module confirms the Audi rear wheel steering malfunction. These codes indicate that the control module's software needs to be updated.

Repair Procedure Summary

Audi Technical Service Bulletin 2066318/6 outlines a specific repair process to resolve the rear wheel steering malfunction:

1. Software Version Management (SVM) Instructions: Technicians must first consult and follow the general operating instructions for Software Version Management (SVM) as detailed in TSB 2011732:00.
2. Basic Setting (Conditional): If symptom code 251 is detected, a basic setting procedure must be performed within the self-diagnosis function of the J1019 control unit. This step requires using service login 20103.
3. Software Update: The J1019 control module, identified by address word 00CB, requires a software update. This update is performed using SVM action code CBA002. The new software version is 0399, which replaces the older version 0398 for part number 4N0909145C.
4. Wheel Alignment: Following the software update, a complete wheel alignment is mandatory. This includes adjusting the rear axle to achieve the tolerance limits for negative camber and positive toe (toe-in). Additionally, the toe on the front axle should be set to the center of its tolerance range.

Required Tools or Parts

The primary requirement for this repair is access to specialized Audi diagnostic equipment capable of performing Software Version Management (SVM) updates. Specific items include:

• Audi diagnostic system with SVM update capabilities.
• Service login 20103 (if symptom code 251 is present).
• SVM action code CBA002.
• New software version 0399 for J1019 control module (part number 4N0909145C).

Warranty Information

This repair, outlined in TSB 2066318/6, is generally covered under Audi's New Vehicle Limited Warranty for up to 48 months or 50,000 miles, whichever occurs first. For Certified Pre-Owned (CPO) vehicles, the repair falls under the G10 claim type. If the vehicle is outside of warranty coverage, this Technical Service Bulletin serves as informational guidance for diagnosis and repair.

The service number for this procedure is 4841, with damage code 0040. Labor operations include software update (0151 0000, maximum 80 time units), charging the battery (2706 8950), and performing a wheel alignment (4495 0300). Diagnostic time for self-diagnosis is 0129 0050, and a post-service road test is allocated 10 time units (0121 0004). All warranty claims must adhere to the Audi Warranty Policies and Procedures Manual and reference TSB 2066318/6.

Important Warnings

This Technical Service Bulletin, identified as 48 24 66 2066318/6, supersedes previous information. It replaces Technical Service Bulletin Group 48 number 23-56, which was dated October 13, 2023. Owners or technicians searching for information on the older bulletin should refer to this updated document for the most current and accurate repair procedures.

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Source: NHTSA ID: 11002229