2022-2026 Audi Brake Disc Corrosion TSB 2067132/3

Audi has issued Technical Service Bulletin (TSB) 2067132/3 to provide guidance on customer complaints related to corrosion, scoring, and noises originating from the friction surface of steel brake discs. This bulletin applies to various 2022-2026 Audi models and aims to help technicians diagnose and address these concerns. Owners experiencing Audi steel brake disc corrosion should pay close attention to this information.

The TSB, which has a release date of October 21, 2025, details the conditions under which such brake issues occur and outlines the recommended service procedures. Owners experiencing symptoms related to brake disc corrosion should be aware of the information contained in this bulletin.

Symptoms and Customer Complaints

Owners of affected 2022-2026 Audi vehicles may notice the following conditions, which are also categorized in the TSB's 'New customer code' section:

• "Rust layer on the brake disc"
• "Noises and/or vibrations when braking"

These symptoms are often described by customers with more specific complaint types:

• "chassis -> brake system -> brake rotor appearance, surface -> scoring/corrosion"
• "chassis -> brake system -> brake rotor appearance, surface -> material detaching"
• "chassis -> brake system noises, vibrations"
• "chassis -> brake system -> brake rotor appearance, surface -> corrosion/rust"

Workshop findings typically confirm these complaints, indicating a visible rust layer or audible noises and vibrations during braking.

Technical Background and Causes of Corrosion

Technical Service Bulletin 2067132/3 explains that corrosion on the friction surface of steel brake discs is a common occurrence influenced by environmental factors. Moisture and road salt are primary contributors to this issue. This is particularly noticeable if the vehicle is left stationary for extended periods or if the brakes are used lightly on short journeys, which can lead to insufficient "brake cleaning" – the process where brake pads naturally scrub the disc surface.

Audi brake discs are manufactured from "flake graphite cast iron," a material that, by its nature, is not inherently resistant to corrosion when exposed to environmental elements like water, salt, snow, and dirt. The TSB explicitly states that it is not possible to apply an anti-corrosion coating directly to the friction surfaces of the brake discs. The document includes visual aids, Figure 1 and Figure 2, which provide examples of excessively rusted disc brakes and rusted disc brake surfaces, respectively.

Proper maintenance of the brake discs, as outlined in the Owner's Manual, is crucial to mitigate Audi steel brake disc corrosion. This includes regularly removing corrosion through normal braking and avoiding overuse by intensive braking, which can also contribute to issues.

Service Recommendations and Repair Procedure

When addressing complaints related to brake disc corrosion or noise, TSB 2067132/3 recommends a specific service procedure for technicians:

1. Perform an extensive test drive: The technician should conduct a thorough test drive that includes several braking operations. The purpose of this step is to allow the brake pads to clean the entire surface of the brake disc through friction.
2. Check pad contact: After the test drive, the technician must verify that the brake pads are making correct and full contact with the disc. Proper contact ensures that the entire friction surface is being cleaned effectively during braking.
3. Consider replacement if necessary: If the customer's complaint persists even after the brake discs have been intensively "braked clean" through the test drive and inspection, replacing the brake parts (discs and potentially pads) is presented as the only remaining option to resolve the issue.
4. Educate the customer: Technicians are advised to explain to the customer the importance of maintaining the brakes according to the guidelines provided in the Owner's Manual. This education helps prevent future occurrences of brake disc corrosion by emphasizing regular use and proper braking habits.

Important Warnings for Owners

Owners should be aware of several critical points regarding this TSB 2067132/3 and the issue of Audi steel brake disc corrosion:

• Future Release Date: This TSB is officially listed as "Released for publishing" with a specific release date of October 21, 2025. This means the information is prepared and finalized but may not be actively implemented or widely communicated by dealerships until that future date.
• Warranty Coverage: This TSB is explicitly stated as "informational only and not applicable to any Audi Warranty." Furthermore, the document clarifies that "Issues of this kind caused by insufficient brake cleaning are not a fault covered under warranty." This is a crucial point: owners are generally responsible for the costs associated with diagnosing and repairing brake disc corrosion if it is attributed to insufficient brake cleaning or environmental factors, as these are not considered manufacturing defects.
• Checking for Updates: All parts and service references provided in this TSB (Transaction No. 2067132) are subject to change. Owners and technicians should always check with their Parts Department and/or ETKA for the latest information and parts bulletins, as well as the Repair Manual for any fasteners, bolts, nuts, and screws that require replacement during a repair.

Revision History

This Technical Service Bulletin 2067132/3 has undergone several revisions to update its content and scope:

• Revision 3: This revision included a revised header, adding model years, and updated service information.
• Revision 2 (September 15, 2023): This revision also involved a revised header, specifically adding more model years to the bulletin's applicability.
• Revision 1 (May 23, 2022): This marks the initial publication of the Technical Service Bulletin.

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Source: NHTSA ID: 11025330