2012-2026 Audi Steering Noise TSB 2073332/1

Symptoms of Steering Noise

Owners of various Audi models, including the 2022 Audi e-tron, may experience an Audi e-tron steering noise while driving. This issue manifests as "grinding, ticking, or squeaking noises" that can be heard from the steering wheel or steering column when the vehicle is being steered. These noises are typically verifiable by a workshop technician during diagnosis. Importantly, this particular issue does not usually trigger any diagnostic trouble codes (DTCs) or relevant event memory entries in the vehicle's system.

Technical Background

The root cause of the Audi e-tron steering noise is attributed to manufacturing tolerances combined with temperature fluctuations. These factors can lead to an interaction between the steering wheel electronics and the steering wheel itself. The steering wheel electronics system includes components such as the steering column combination switch, the coil connector with its integrated electronics, and the steering angle sender. Continuous improvements have been implemented in production regarding the mounting of the steering column combination switch to the steering column to mitigate these issues.

Important Considerations for Diagnosis

When diagnosing the Audi e-tron steering noise, technicians should be aware of specific conditions that can influence the diagnosis:

• Dynamic Steering (PR number 1N8): If the vehicle is equipped with dynamic steering, this system becomes inactive when DTCs are present. If the steering noise disappears when dynamic steering is disabled, the root cause might lie within the dynamic steering system itself, not necessarily the steering wheel or column components.
• Vehicle Weight: If the grinding, ticking, or squeaking noise can only be reproduced when the vehicle is on the ground (with its full weight), it is less likely to be related to the steering column trim or the steering wheel electronics. This suggests a different area of investigation may be needed.

Repair Procedure Summary for TSB 2073332/1

Audi Technical Service Bulletin 2073332/1 outlines a structured approach for technicians to diagnose and resolve the Audi e-tron steering noise. The procedure involves a series of checks to pinpoint the exact source of the noise:

1. Steering Column Trim Inspection: Technicians will first remove the steering column trim. After removal, the noise is re-evaluated. If the noise is resolved, the technician will then check and adjust the installation position of the steering column trim, insulating it as needed to prevent future noise.
2. Steering Wheel Electronics Module Check: If removing the trim does not resolve the noise, the entire steering wheel electronics module is removed. The steering wheel is then re-fitted to the steering column, and the noise is reassessed. If the noise disappears at this stage, the steering wheel electronics module is identified as the root cause. In such cases, the module should be replaced only if adjustment cannot resolve the noise.
3. Airbag and Harness Routing: A critical step involves ensuring that the airbag, airbag harness, or steering wheel button harness are correctly routed. Improper routing can cause unneeded tension on the slip ring, leading to noise.
4. Noise Isolation with Stethoscope: Finally, a stethoscope or similar tool may be used to further isolate and identify the precise source of the noise within the steering assembly.

This systematic approach helps ensure that the correct component is identified and addressed, preventing unnecessary parts replacement.

Warranty Information

Repairs performed under Technical Service Bulletin 2073332/1 are generally covered under Audi's New Vehicle Limited Warranty for up to 48 months or 50,000 miles, whichever comes first. For Audi Certified Pre-Owned (CPO) vehicles, coverage is typically provided under the G10 program, subject to owner verification. If your vehicle is outside of its warranty period, this Technical Service Bulletin serves as informational guidance, and repair costs may apply.

Source: NHTSA ID 10251660