2021-2023 Audi Active Lane Assist Malfunction DTC U112300

Audi has released Technical Service Bulletin (TSB) 96 24 00 2061932/8, dated July 17, 2024, to address issues with the Active Lane Assist and Traffic Jam Assist systems in various 2021-2023 Audi models. This TSB supersedes previous bulletin Group 96 number 24-92, dated February 20, 2024, and provides updated information regarding the condition and repair procedure. Owners experiencing an Audi Active Lane Assist malfunction should review this information.

This bulletin specifically targets instances where the driver assistance systems become unavailable, often accompanied by specific diagnostic trouble codes (DTCs).

Symptoms

Owners of affected Audi vehicles may observe the following messages displayed on the instrument cluster:

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

When these messages appear, both the Traffic Jam Assist and Audi Active Lane Assist functions will be unavailable or cannot be activated. This indicates an Audi Active Lane Assist malfunction that requires attention.

Fault Codes / DTCs

When diagnosing this condition, technicians will find Diagnostic Trouble Code (DTC) U112300 stored in one of two control modules:

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

Diagnosis

Workshop findings indicate that the complaint is typically active or static and can be consistently reproduced. The presence of DTC U112300, especially with a frequency counter greater than or equal to 5 for passive/sporadic errors, points to a databus communication issue affecting the front camera (R242) or the distance regulation control module (J428).

Important Warnings

Audi emphasizes the importance of proper diagnosis and repair. A notice within TSB 96 24 00 2061932/8 states:

"Try to reproduce the customer complaint (based on the description/cause of the issue), so that it can be clearly assigned to this TPI. The following repair must only be carried out if all the criteria (model/type, chassis number, engine/motor and gearbox code, PR number(s), part number, software version, code etc.) apply exactly. Otherwise, this solution will not eliminate the problem, and repeat repairs may be necessary. In such a case, we may reject the warranty claim and charge back the cost of the parts."

This means that simply replacing parts without confirming the exact conditions and DTCs may not resolve the Audi Active Lane Assist malfunction and could lead to warranty claim rejections.

Repair Procedure Summary

To resolve the Audi Active Lane Assist malfunction and clear DTC U112300, the recommended repair is to replace the capacitive steering wheel. This procedure should be performed according to the detailed instructions provided in the official Audi repair manual. The repair involves removing and reinstalling the steering wheel and may also require charging the vehicle's battery.

Warranty Information

For vehicles still under warranty, claims should be submitted in accordance with the Audi Warranty Policies and Procedures Manual. The TSB specifies the following codes for warranty claims related to this issue:

• Service Number: 4810
• Damage Code: 0040
• Claim Comment: As per TSB 2061932/8

If the vehicle is outside of its warranty period, this Technical Service Bulletin is for informational purposes only, and repair costs may not be covered.

Owner Action

If your 2021-2023 Audi is displaying "Traffic Jam Assist: unavailable!" or "Audi Active Lane Assist: fault!" messages, it is recommended to schedule an appointment with an authorized Audi service center. Inform them about the specific messages you are seeing and mention Technical Service Bulletin 96 24 00 2061932/8. The technicians will perform a diagnostic scan to confirm the presence of DTC U112300 and carry out the necessary repair.

NHTSA ID: 11005981