2021-2023 Audi Models Active Lane Assist Malfunction TSB

Owners of various 2021-2023 Audi models, including the Audi e-tron, may encounter dashboard warnings related to the active lane assist and traffic jam assist systems. These warnings are often accompanied by a specific diagnostic trouble code (DTC) U112300, pointing to a malfunction in the capacitive steering wheel.

This Technical Service Bulletin (TSB) 2061932/3, issued on July 26, 2021, supersedes an earlier bulletin (Group 96 number 21-65 dated March 19, 2021) and provides guidance for diagnosing and resolving this issue.

Symptoms

Owners may observe one of the following malfunction indications displayed in the instrument cluster:

• "Audi Active Lane Assist: malfunction!"
• "Traffic Jam Assist: malfunction!"

Fault Codes / DTCs

When these symptoms occur, workshop findings typically reveal one or more of the following DTCs stored in the vehicle's control modules:

Code	Description	Module	Symptom Code
U112300	Databus error value received	Front camera, R242 (address word 00A5)	1123220
U112300	Databus error value received	Distance regulation control module, J428 (address word 0013)	2153

Diagnosis / Trigger Conditions

The affected vehicles are equipped with a "capacitive steering wheel." This advanced steering wheel uses capacitive touch sensors to detect the driver's hands, ensuring they are paying attention while using driver assist features like Active Lane Assist and Traffic Jam Assist. The presence of DTC U112300 indicates a communication error or malfunction related to this capacitive steering wheel, which can prevent these driver assistance systems from functioning correctly.

Repair Procedure Summary

The TSB outlines a series of steps for technicians to diagnose and repair the underlying cause of the Audi e-tron U112300 malfunction:

1. Inspect Steering Wheel: The technician will first visually inspect the steering wheel for any exterior or mechanical damage, such as deep scratches. If such damage is found, it may be considered external influence and might not be covered under warranty.
2. Airbag Removal: The driver airbag unit must be carefully removed from the steering wheel.
3. Wiring Inspection: All visible wiring on the steering wheel and its connectors must be thoroughly checked to ensure they are in good condition and properly secured.
4. Steering Wheel Replacement: If, after completing the initial inspections (steps 1-3), no obvious damage or wiring issues are found, the steering wheel itself should be replaced.

Required Tools or Parts

Technicians will need to consult ETKA (Electronic Parts Catalogue) for specific part numbers. The necessary parts may include:

• Fasteners, Bolts, Nuts, and Screws (as needed per the Repair Manual).
• Steering Wheel (if required, quantity 01).

Important Warnings

Owners should be aware of the following warranty information:

• Warranty coverage for this issue is typically up to 48 months or 50,000 miles. For Certified Pre-Owned (CPO) vehicles, coverage is under the G10 claim type, requiring owner verification.
• If the vehicle is outside any warranty, this Technical Service Bulletin is informational only. This means that repairs for the Audi e-tron U112300 malfunction may not be covered by Audi if the vehicle is past its warranty period.
• All warranty claims must adhere to the Audi Warranty Policies and Procedures Manual and are subject to review or audit by Audi Warranty.

Owner Action

If your 2021-2023 Audi model is displaying "Audi Active Lane Assist: malfunction!" or "Traffic Jam Assist: malfunction!" warnings, or if a diagnostic scan reveals DTC U112300, it is recommended to schedule an appointment with an authorized Audi service center. They have the specialized tools and training to properly diagnose and address the issue according to TSB 2061932/3.