2022-2026 Audi Brake Vibrations TSB 2075120/2

Audi has released Technical Service Bulletin (TSB) 2075120/2 to provide a comprehensive approach for diagnosing and addressing brake vibrations across various Audi models from 2022 to 2026. This TSB outlines common causes for brake judder and vibrations, helping technicians accurately identify and resolve the issue.

Symptoms

Owners may notice a range of symptoms indicating brake vibrations or judder. These can manifest as:

• Noise and Vibrations: General noises and vibrations originating from the vehicle's front area.
• Pulsating Brakes: A pulsating sensation through the foot brake pedal.
• Rubbing Noises: Rubbing sounds from the brakes during operation.
• Vibrating Vehicle: The entire vehicle vibrating, particularly noticeable when braking.
• Buzzing Noises: Buzzing sounds associated with brake regulation.
• Steering Wheel Vibrations: Vibrations felt through the steering wheel, potentially indicating issues with steering assist or front vehicle areas.

Diagnosis / Trigger Conditions

Brake judder and vibrations, whether from the front or rear axle, can stem from multiple factors, including driving style, brake disc temperature, and environmental conditions. Audi's TSB 2075120/2 identifies several specific criteria that can lead to these vibrations:

• Brake Disc Corrosion: The presence of corrosion on the brake disc itself.
• Corrosion Marks: Marks on the brake disc caused by sticking (corroded) brake pads.
• Thermal Deposits: Deposits on the brake disc resulting from high thermal load.
• Worn Brake Pads: Droning noises due to reduced damping characteristics if brake pads are excessively worn.
• High Thermal Load: Evidence of very high thermal load on the brakes, such as blue tempering or heat marks on the discs.
• Brake Disc/Wheel Hub Runout: Deviations in the axial or lateral runout of the brake disc or wheel hub. These measurements should be checked against specified limits in the repair manual.
• Thickness Variations: Variations in brake disc thickness that develop after a certain mileage, which might not be detectable with standard workshop measuring methods.
• Wheel Imbalance/Run-out: Imbalance or radial run-out of the wheels can significantly increase rubbing or cause body vibrations during braking.
• Running Gear Changes: Modifications to the running gear, such as a wider track, can also contribute to vibrations.

Repair Procedure Summary

To address Audi e-tron brake vibrations and similar issues in other models, a test drive is crucial to confirm the customer complaint. Once confirmed, technicians should follow the diagnostic flow chart provided in the TSB's appendix to pinpoint the exact cause. The TSB emphasizes that with proper information, identifying the root cause and performing the necessary repair should be straightforward.

For any repairs carried out under warranty, it is essential to document the cause of the complaint and all measured values. Audi notes that for irregularities with mileage exceeding 18,000 miles, the issue is often attributed to customer usage patterns rather than fundamental component quality.

Owner Action

If your Audi is exhibiting symptoms of brake vibrations or judder, it is recommended to schedule an appointment with an authorized Audi service center. Describe the symptoms in detail to help technicians diagnose the problem effectively. The service center will perform a test drive and follow the TSB's diagnostic procedures to identify and correct the underlying cause of the Audi e-tron brake vibrations or other Audi model brake issues.