2023-2024 Audi Dynamic Steering Noise TSB 2063546/4

Audi has issued Technical Service Bulletin (TSB) 2063546/4 to provide guidance on identifying the source of specific noises originating from the dynamic steering system in various 2023-2024 Audi models. This bulletin, dated March 20, 2024, supersedes previous TSB 23-46 from June 29, 2023, and aims to assist technicians in diagnosing customer complaints related to steering noises. Owners of affected vehicles, such as a 2023 Audi Q8 dynamic steering noise, should be aware of this communication.

Symptoms of Dynamic Steering Noise

Owners of certain 2023-2024 Audi vehicles may experience specific auditory issues when operating their steering system. The primary symptom described in TSB 2063546/4 is the presence of "cracking or creaking noises when steering that come from the front end near the steering column, intermediate steering shaft, steering rack, and/or the steering wheel." These noises can be noticeable during various steering maneuvers, indicating a potential issue within the dynamic steering components.

Technical Background: Why the Noise Occurs

The root cause of these steering noises, as identified by Audi, is attributed to the dynamic steering actuator. The TSB states that the noises arise "due to tolerances" within this component. Dynamic steering is an advanced system that can vary the steering ratio based on speed and driving conditions, providing a more agile feel at low speeds and greater stability at high speeds. The actuator, a key part of this system, controls these adjustments. Manufacturing tolerances, or slight variations in component dimensions, can sometimes lead to friction or movement that results in the reported cracking or creaking sounds.

Diagnostic Procedure

To help technicians pinpoint whether the dynamic steering actuator is the source of the noise, Audi outlines a specific diagnostic step in TSB 2063546/4. The procedure involves temporarily disabling the dynamic steering system:

1. Remove the fuse for the dynamic steering, J792 (address word 001B). This action effectively disables the actuator, preventing it from influencing the steering behavior.
2. Test for noise. After the fuse is removed, the vehicle should be driven or the steering operated to check if the cracking or creaking noises persist.

If the noises cease after the fuse for J792 is removed, it indicates that the dynamic steering actuator is indeed the cause. If the noises continue, the TSB advises technicians to investigate other components of the steering system, as the issue would lie elsewhere.

Important Warnings for Owners

Owners should be aware of several critical points regarding TSB 2063546/4:

• Informational Only: This TSB is explicitly stated to be "informational only." This means it provides diagnostic guidance but does not outline a specific repair procedure or solution at this time.
• No Warranty Coverage: The bulletin also clarifies that it is "not applicable to any Audi Warranty." This is a significant detail, as it implies that any diagnostic work or potential future repairs related to this issue may not be covered under standard Audi warranty terms.
• Production Solution Under Development: Audi notes that a "Production Solution" for this issue is "Under development." This indicates that while the cause has been identified, a permanent fix is still being engineered and is not yet available.

Next Steps for Audi Owners

If you own a 2023-2024 Audi model and are experiencing cracking or creaking noises from your dynamic steering, it is advisable to contact your authorized Audi dealership. While TSB 2063546/4 provides diagnostic steps for technicians, it's important to understand that a definitive repair is still under development, and any diagnostic work may not be covered by warranty. Discuss these points with your service advisor to understand the potential implications for your vehicle and any associated costs.

Source: NHTSA ID: 10252001