2021-2024 Audi Steering Malfunction TSB 2066318/5

Symptoms

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

Fault Codes / DTCs

When a "Steering malfunction warning" appears, one of the following Diagnostic Trouble Codes (DTCs) will typically be logged in the rear axle wheel steering control module, identified as J1019 (address word 00CB):

Code	Symptom Code	Description
B200FF0	251 and/or 129	Rear axle wheel steering control module fault
C12A329	224	Rear axle wheel steering control module fault

Affected Component

The root cause of the "Audi steering malfunction warning" is typically related to the software within the rear axle wheel steering control module, designated as J1019.

Diagnosis

If your vehicle exhibits a "Steering malfunction warning" and the diagnostic scan reveals DTC B200FF0 or C12A329, the issue points to the need for a software update for the J1019 control module. For vehicles with symptom code 251, a basic setting procedure for the J1019 control unit is also required as part of the diagnostic and repair process.

Repair Procedure Summary

Audi Technical Service Bulletin 2066318/5 outlines a specific procedure to resolve the "Audi steering malfunction warning" and associated DTCs. The primary step involves updating the software for the rear axle wheel steering control module (J1019).

1. Technicians must first consult TSB 2011732, which provides detailed instructions for Software Version Management (SVM) operations.
2. For vehicles specifically presenting DTC B200FF0 with symptom code 251, a basic setting procedure must be performed within the self-diagnosis of the J1019 control unit, using service login 20103.
3. The J1019 module (00CB) then needs to be updated using the SVM action code CBA002. This update will install new software version 0399, replacing the older version 0398, for the software part number 4N0909145C.
4. Following the software update, a wheel alignment is mandatory. This includes setting the rear axle to the tolerance limits for negative camber and positive toe (toe-in), and centering the tolerance range for the toe on the front axle.

Required Software and Tools

To perform the repair described in TSB 2066318/5, technicians will need:

• Access to Technical Service Bulletin 2011732 for SVM operating instructions.
• The SVM action code CBA002 for the software update.
• The new software version 0399 for part number 4N0909145C for the J1019 control module.
• Diagnostic equipment capable of performing basic settings and software updates, requiring service login 20103 for specific procedures.

Warranty Information

This repair is covered under Audi's warranty program, specifically Claim Type 110 for vehicles up to 48 months or 50,000 miles. Certified Pre-Owned (CPO) vehicles may also be covered under Claim Type G10, subject to owner verification. If the vehicle is outside of warranty, this Technical Service Bulletin serves as informational guidance only.

The service number for this repair is 4841, with a damage code of 0040. Labor operations include Software Update (0151 0000) and wheel alignment (4495 0300). Diagnostic time (GFF) is allocated as 0150 0000, and a post-service road test (0121 0004) is also included. All warranty claims must adhere to the Audi Warranty Policies and Procedures Manual.

NHTSA ID: 10244478