2022-2026 Audi e-tron GT Brake Pedal Knocking Noise TSB

Owners of 2022-2026 Audi e-tron GT models may notice a distinct one-off knocking noise when releasing the brake pedal, particularly during the vehicle's initial break-in period. This specific concern is addressed by Audi Technical Service Bulletin (TSB) 2071255/3, which provides clarification on the nature of this sound. This TSB confirms that the Audi e-tron GT brake pedal knocking noise is an expected characteristic under certain conditions.

Symptoms of the Audi e-tron GT Brake Pedal Knocking Noise

Customers have reported a "Knocking noise when releasing the brake pedal." The TSB details various complaint types related to noises and vibrations originating from the footwell area, specifically the left front, and the brake system. These symptoms are typically observed when the vehicle is in its break-in mode.

The specific complaints include:

• Snapping noises and vibrations: Occurring in the passenger compartment footwell, left front, and from the chassis/brake system (foot brake, brake pedal).
• "Too loud" noises and vibrations: Reported in the passenger compartment footwell, left front.
• Chattering noises and vibrations: Associated with the chassis/brake regulation (foot brake) and the passenger compartment footwell, left front.
• Ticking noises and vibrations: Noted in the passenger compartment footwell, left front.
• Clicking noises and vibrations: Originating from the chassis/brake regulation (foot brake).
• General "noise": From the chassis/brake regulation (foot brake) and the passenger compartment footwell, left front.
• Pinging noises and vibrations: Identified in the passenger compartment footwell, left front.

Diagnosis and Technical Explanation

Audi's workshop findings confirm that the reported noise can be reproduced. Furthermore, the presence of a specific Diagnostic Trouble Code (DTC) in the ABS control unit indicates that the vehicle's "break-in mode" is active, and consequently, the recuperation function has been deactivated. While the specific DTC code is not provided in the bulletin, its presence serves as a diagnostic confirmation of the vehicle's operational state.

The technical explanation for the Audi e-tron GT brake pedal knocking noise centers on the vehicle's break-in mode. During this period, the electric motors' recuperation function, which typically contributes to braking and energy recovery, is intentionally deactivated. As a result, the hydraulic brake system becomes the sole method of vehicle retardation. The audible knocking noise originates from the tandem brake master cylinder as the brake pedal is released. This sound is a normal operational characteristic of the hydraulic system when recuperation is inactive during the break-in phase.

Important Owner Information and Warnings

TSB 2071255/3 provides crucial information for owners regarding this condition. It explicitly states that no measures or replacement parts are required or justified to address this noise. This scenario represents normal behavior for the Audi e-tron GT during its break-in mode. Owners should be aware that this is not a fault requiring repair.

Furthermore, the bulletin clarifies that this TSB is informational only and is not applicable to any Audi Warranty claim. This means that if you experience the Audi e-tron GT brake pedal knocking noise as described, it is not considered a defect that would be covered under warranty for repair or parts replacement.

No Repair Necessary

The bulletin's "Production Solution" section is marked as "Not applicable," indicating that no manufacturing change or specific production fix is required for this condition. Correspondingly, the "Service" section states, "No measures or replacement parts are required/justified." This reinforces that the Audi e-tron GT brake pedal knocking noise is a characteristic of the vehicle's design and operation during its break-in period, rather than a malfunction. After the break-in mode automatically concludes, the recuperation function is reactivated, and the noise is expected to either cease entirely or occur at a significantly reduced level.

Revision History

This Technical Service Bulletin, identified as 2071255, has undergone several revisions to ensure its accuracy and update relevant information:

• Revision 3 (October 14, 2025): The header was revised to update the Model Year information, ensuring the bulletin remains current for newer vehicle production years.
• Revision 2 (September 10, 2024): Similar to Revision 3, the header was revised to update the Model Year information.
• Revision 1 (August 18, 2023): This marks the initial publication of the bulletin.

These revisions ensure that the information provided to technicians and owners is up-to-date regarding the affected model years and the nature of the condition.

What to Do if You Experience This Issue

If you own a 2022-2026 Audi e-tron GT and notice a one-off knocking noise when releasing the brake pedal, especially during the vehicle's early mileage, there is no need for concern or a service appointment specifically for this issue. As outlined in TSB 2071255/3, this is a normal characteristic of the vehicle operating in break-in mode with deactivated recuperation. The Audi e-tron GT brake pedal knocking noise is expected to subside once the break-in period is complete and recuperation is reactivated. No parts or repairs are needed, and the condition is not covered by warranty as it is considered normal operation.

NHTSA ID: 11025272