2022-2024 Audi e-tron GT Brake Disc Hotspots TSB

Symptoms

Owners of 2022-2024 Audi e-tron GT and RS e-tron GT models equipped with tungsten carbide brake discs may observe visible "Hotspots / discoloration visible on the friction surface of the brake disc." This condition is purely aesthetic and does not indicate a functional problem with the braking system. Workshop inspections confirm that when checking the brake disc axial run-out, no abnormalities are identified, further supporting that the brake performance is not compromised.

Technical Background

Audi Technical Service Bulletin 46 24 56 2073824/1 explains that the friction brake is constantly exposed to various influences during operation. One significant factor is the thermal stress on the friction surfaces, which occurs due to the use of the brake. Depending on individual driving style, temperatures can rise sufficiently to cause discoloration on the top layer of the tungsten carbide brake disc. This phenomenon is an inherent characteristic of the brake disc's design.

It is crucial to understand that these visible "Hotspots on friction surface of tungsten carbide brake discs" are considered a purely visual complaint. They do not affect the overall function or performance of the brake system. Therefore, the presence of these hotspots or discoloration does not warrant any repair action.

Important Warnings for Owners

Audi has issued specific guidance regarding this condition. For the 2022-2024 Audi e-tron GT brake hotspots, no measures are required to address the phenomenon on the friction surface of the brake discs. Replacement of parts due to this phenomenon is not justified.

Furthermore, Audi explicitly states that if parts are replaced for this visual condition, they may reject the warranty claim and charge back the cost of the parts. This Technical Service Bulletin (TSB) 2073824 is informational only and is not applicable to any Audi Warranty. Owners should be aware that attempting to have these discs replaced under warranty for cosmetic reasons will likely be denied.

What Owners Should Know

If you notice "Hotspots / discoloration visible on the friction surface of the brake disc" on your 2022-2024 Audi e-tron GT or RS e-tron GT, rest assured that this is a normal visual characteristic resulting from thermal stress. The condition does not impact the safety or performance of your vehicle's braking system. No repair or replacement of the brake discs is necessary or recommended by Audi.

This TSB, identified as 46 24 56 2073824/1, serves to inform technicians and owners that the observed discoloration is a cosmetic issue, not a functional defect. Do not pursue replacement of brake components solely for this visual concern, as it will not resolve any underlying problem and may result in charges.

Source: NHTSA ID: 11002128