2021-2024 Audi Active Lane/Traffic Jam Assist Malfunction TSB

Owners of 2021-2024 Audi A4, A4 allroad, A5, S4, S5, RS 5, Q5, Q5 e quattro, Q5 Sportback, SQ5, and SQ5 Sportback models may encounter warning messages related to their vehicle's driver assistance systems. Specifically, the instrument cluster might display "Traffic Jam Assist: unavailable!" or "Audi Active Lane Assist: fault!". These messages indicate that both functions are unavailable or cannot be activated. This issue is addressed by Audi Technical Service Bulletin (TSB) 2061932/9, which outlines a diagnostic and repair procedure for the underlying cause, often linked to the Audi Active Lane Assist malfunction U112300.

This TSB, identified as 96 24 03 2061932/9, was last revised on September 30, 2024, and supersedes an earlier bulletin, Group 96 number 24-00, dated July 17, 2024.

Symptoms

Customers typically report seeing specific warning messages on their vehicle's instrument cluster. These include:

• "Traffic Jam Assist: unavailable!"
• "Audi Active Lane Assist: fault!"

When these messages appear, the related driver assistance functions become inoperative and cannot be activated. This condition is often active or static, meaning it can be reproduced consistently.

Fault Codes / DTCs

When diagnosing this issue, technicians will typically find Diagnostic Trouble Code (DTC) U112300 stored in one of two control modules. This DTC signifies a "Databus error value received" and can present with different symptom codes depending on the module involved and the nature of the fault.

DTC Code	Symptom Code	Description	Module	Condition	Address Word
U112300	1123220	Databus error value received	Front camera, R242	Active/Static or Passive/Sporadic (frequency counter >= 5)	00A5
U112300	2153	Databus error value received	Distance regulation control module, J428	Active/Static or Passive/Sporadic (frequency counter >= 5)	0013

Diagnosis

The presence of DTC U112300, specifically with symptom codes 1123220 or 2153, points to a communication issue within the vehicle's databus system affecting the front camera (R242) or the distance regulation control module (J428). The fault can be either active/static, meaning it's currently present, or passive/sporadic, indicating it occurred previously but might not be present at the time of diagnosis. For sporadic faults, a frequency counter of 5 or more suggests a recurring problem.

Repair Procedure Summary

The recommended repair to address the Audi Active Lane Assist malfunction U112300 is to replace the capacitive steering wheel. Technicians are instructed to follow the detailed instructions provided in the repair manual for this procedure. The replacement of the steering wheel is intended to resolve the databus error that prevents the Active Lane Assist and Traffic Jam Assist functions from operating correctly.

Important Considerations for Owners

Audi has issued a critical notice regarding this repair. It is essential for the customer complaint to be accurately reproduced and clearly linked to the issue described in this TSB. The repair should only be performed if all specific criteria, including the exact model, chassis number, engine/motor and gearbox codes, PR numbers, part numbers, software versions, and other codes, precisely match the conditions outlined in the TSB. If these criteria are not met, the repair may not resolve the problem, potentially leading to repeat repairs. In such cases, Audi may reject warranty claims and charge back the cost of parts.

Warranty Information

For vehicles still under warranty, this repair may be covered. The service number associated with this TSB is 4810, and the damage code is 0040. If the vehicle is outside of its warranty period, this Technical Service Bulletin serves as informational guidance only. Labor operations for this repair include "Steering wheel remove + reinstall" (code 4810 19xx) and "GFF" (code 0150 0060), with claim comments referencing TSB 2061932/9.

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Source: NHTSA ID: 11009406