2009-2026 Audi Vehicle Vibration in Dynamic Mode TSB

Symptoms of Audi Vehicle Vibration in Dynamic Mode

Owners of 2009-2026 Audi vehicles may experience various noises and vibrations originating from the front of the vehicle, the engine compartment, dashboard, or center console, particularly when driving in dynamic mode. These audible symptoms can include a "Humming", "Droning", "Rattling", or "Whirring" sound. These noises are often accompanied by a noticeable Audi vehicle vibration dynamic mode.

Diagnosis and the Structure-Borne Sound Actuator

According to Technical Service Bulletin (TSB) 2074729/2, these customer-reported noises and vibrations can often be traced to the actuator for structure-borne sound, also referred to as an impulse sender. This component is typically located within the plenum chamber of the vehicle. Technicians will first attempt to reproduce the Audi vehicle vibration dynamic mode to confirm the complaint.

During diagnosis, service personnel are instructed to carefully inspect the actuator's installation. This includes verifying that the mounting nut is correctly tightened, ensuring the actuator has free movement without contact with the vehicle body or a bent bracket, and checking the routing of the connecting cable to prevent contact or tension. If these initial checks do not resolve the issue, a final control diagnosis of the actuator is performed to isolate the problem.

Repair Procedure Summary

If the diagnosis confirms that the structure-borne sound actuator is the source of the noise and vibration, the repair involves either correcting the installation or replacing the actuator. The initial steps focus on ensuring the actuator is properly secured and its connections are free from obstruction or tension. If these checks are satisfactory and the issue persists, the actuator itself will be replaced.

Important Information for Owners

If your vehicle requires service under warranty for the Audi vehicle vibration dynamic mode described in TSB 2074729/2, your Audi dealership must submit a video with the warranty claim. This video must clearly demonstrate the complaint and be uploaded to DOC-IT. To ensure the video is valid, it must include the vehicle's VIN and the date. For privacy and security, the video must not show any persons, faces, vehicle registration numbers (license plates), or other customer data. This TSB supersedes previous bulletin Group 27 number 24-76 dated July 31, 2024.

Warranty Claim Details

This Technical Service Bulletin is informational only if the vehicle is outside of its warranty period. For in-warranty repairs, specific service and damage codes are used. The service number associated with this TSB is 2793. Damage codes include:

• 0018: If the nut is not tightened correctly or if the actuator cannot move freely.
• 0029: If the routing of the connecting cable is not correct.
• 0010: If the component (actuator) is replaced.

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

Labor Operations

Technicians will use specific labor operation codes for the diagnostic and repair procedures related to this TSB:

• 6644 1900 or 8522 1900: For removing and installing the cowl panel trim or plenum chamber cover.
• 2793 0199: To check the actuator for structure-borne sound (estimated 10 time units).
• 2793 19xx: For removing and installing the actuator for structure-borne sound.
• 0151 0060: For the time spent on Guided Fault Finding (GFF) as stated on the diagnostic protocol.

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