2021 Audi Lane Departure Warning Not Available TSB

Symptoms

Owners of certain 2021 Audi models may experience issues with their lane departure warning system. The primary symptoms reported include:

• The lane departure warning (aLDW) system is sporadically not available.
• When attempting to activate the aLDW system, the instrument cluster displays the message: "Lane departure warning: function requiring license not purchased/expired. See owner's manual."

Workshop findings indicate that this issue usually cannot be consistently reproduced and occurs only sporadically while driving.

Technical Background

Audi has identified that the root cause of this problem is a parameter setting or coding within the driver assist systems control module, specifically the J1121 control unit. This setting requires an update to function correctly.

Production Solution

To address this condition, Audi has developed a new Target Data Container (ZDC) update. This update is applied to the driver assistance systems control module, J1121 (address word 00A5), which resolves the incorrect parameter setting.

Repair Procedure Summary

To fix the Audi lane departure warning issue, technicians must perform a software update on the driver assistance systems control module, J1121. This update utilizes the Software Version Management (SVM) system.

1. Preparation: Technicians are instructed to follow all guidelines detailed in Technical Service Bulletin (TSB) 2011732, which outlines the operating instructions for Software Version Management (SVM).
2. Update Process: The J1121 control module is updated using a specific SVM action code. This code ensures that the correct New Target Data Container (ZDC) software is installed, replacing the older version.

Software Update Details

The TSB provides a table for technicians to identify the correct software versions and SVM codes based on the vehicle model. This table lists:

• Old Target Data Container Number and Version: These identify the software currently installed in the J1121 control module.
• New Target Data Container Number and Version: These specify the updated software that needs to be installed.
• SVM Code Input: This is a unique code, such as A5A012, that technicians use within the SVM system to initiate the correct software update for the specific vehicle model.

This ensures that the driver assistance systems control module receives the appropriate software to resolve the lane departure warning malfunction.

Important Warnings

Owners and technicians should be aware of a critical note regarding this software update:

• "This update might cause the driver assistance settings of the vehicle to be reset."

Before performing the update, technicians are advised to either record the vehicle's current driver assistance settings and reset them accordingly after the update, or inform the customer in advance that these settings may be reset.

Warranty Information

This repair is covered under Audi's warranty policies, subject to specific conditions:

• Claim Type: 110, applicable for vehicles up to 48 months or 50,000 miles.
• CPO Covered Vehicles: For Certified Pre-Owned (CPO) vehicles, the claim type is G10, and owner verification is required.
• Out-of-Warranty Vehicles: If the vehicle is outside of its warranty period, this Technical Service Bulletin serves as informational guidance only, meaning the repair cost may not be covered.

Specific Codes for Warranty Claims:

• Service Number: 9093
• Damage Code: 0039

Labor Operations:

• Software Update (Includes checking for DTCs): Labor operation 0151 0000, with a maximum time allowance of 40 TU (Time Units).
• Diagnostic Time (GFF): No allowance.
• Road Test: No allowance for road tests performed prior to or after the service procedure.

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

How to Get the Repair

If your 2021 Audi model is experiencing the Audi lane departure warning issue, contact your authorized Audi dealership. Explain the symptoms you are experiencing, referencing Technical Service Bulletin 2062265/1. The dealership will perform the necessary software update on the J1121 control module to resolve the problem.

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Source: NHTSA ID 10187350