2022 Audi A3, S3, RS 3 DTC U160D00 Lane Change Assist Issue

Important Warning

Owners and technicians should note the following critical condition for this bulletin:

• "This TSB is only relevant if the DTC specified above is present and the Lane Change Assist control unit 2 -J1087- was previously replaced (left side of vehicle)."

Symptoms

Owners of affected 2022 Audi A3, S3, and RS 3 models may encounter a diagnostic trouble code (DTC) related to the Lane Change Assist system. Specifically, the vehicle's diagnostic system will store DTC U160D00 in the Lane Change Assist control unit, designated as -J1086- (address word 003C). This particular fault, described as "Component protection SWA slave in as-delivered state active/static," indicates an active or static issue within the system.

This condition, including the Audi S3 DTC U160D00, is a result of a software issue within the Lane Change Assist control unit -J1086-. It becomes relevant only if the Lane Change Assist control unit 2 (-J1087-), located on the left side of the vehicle, has been replaced prior to the DTC appearing.

Fault Codes / DTCs

The following diagnostic trouble code is associated with this issue:

Code	Description	Module
U160D00	Component protection SWA slave in as-delivered state active/static	Lane Change Assist control unit (-J1086-)

Diagnosis and Trigger Conditions

To confirm this specific issue, technicians must verify two conditions. First, the Audi S3 DTC U160D00 must be present in the Lane Change Assist control unit (-J1086-). Second, it is crucial that the Lane Change Assist control unit 2 (-J1087-), which controls the left side of the vehicle, has been previously replaced. If both conditions are met, the vehicle is eligible for the software update outlined in this Technical Service Bulletin 2069719/1.

Repair Procedure Summary

The repair for the Audi S3 DTC U160D00 involves updating the software for both Lane Change Assist control units. The general steps are as follows:

1. Consult SVM Operating Instructions: Technicians must first follow the instructions detailed in Technical Service Bulletin 2011732, titled "00 Software Version Management (SVM), operating instructions."
2. Update Lane Change Assist Control Unit (J1086): The primary Lane Change Assist control unit (-J1086-, address word 003C) needs a software update using the SVM action code 3CA020.
3. Update Lane Change Assist Control Unit 2 (J1087): The secondary Lane Change Assist control unit 2 (-J1087-) also requires a software update, utilizing the SVM action code 63BS001.
4. Perform Vehicle Bus Sleep Cycle: After the software updates, a vehicle bus sleep cycle must be performed. This involves removing the diagnostic head, turning off the ignition, closing all doors, the hood, and the trunk, then waiting approximately 5 minutes for the vehicle's systems to power down completely.
5. Run Test Plan: Finally, technicians should run the test plan for DTC U160D00 via Guided Fault Finding (GFF) to ensure the issue is resolved.

Warranty Information

This software update procedure is generally covered under Audi's warranty. Claims can be submitted for vehicles up to 48 months or 50,000 miles, whichever comes first. For Certified Pre-Owned (CPO) vehicles, coverage is designated as G10, but ownership must be verified. If the vehicle falls outside of any warranty, this Technical Service Bulletin serves as informational guidance only, meaning the repair cost may not be covered.

The specific details for warranty claims include:

• Service Number: 9635
• Damage Code: 0039
• Labor Operations: Software Update (includes checking for DTCs) with labor code 0151 0000. The time allocated for this operation is based on the diagnostic protocol, with a maximum of 150 Technical Units (TU).
• Diagnostic Time: GFF, with no allowance for 0 TU.
• Road Test: No allowance for road tests before or after the service procedure (0 TU).
• Claim Comment: Claims should reference TSB 2069719/1.

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

Additional Information

Completing this procedure also requires reference to TSB 2011732: 00 Software Version Management (SVM), operating instructions, which provides detailed guidance on the SVM process.

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Source: NHTSA ID: 10233632