2022-2024 Audi e-tron GT Knocking Brake Pedal Noise TSB

Owners of 2022-2024 Audi e-tron GT and RS e-tron GT models may notice a specific knocking noise when releasing the brake pedal. This condition, described in Audi Technical Service Bulletin (TSB) 47 23 24 2071255/1, issued on August 18, 2023, is a normal characteristic during the vehicle's initial break-in period and does not indicate a fault. This TSB, also referenced as 2071255, provides crucial information for owners and technicians.

Symptoms and Conditions

Drivers may report an audible knocking noise when releasing the brake pedal. Workshop findings confirm that this noise can be consistently reproduced. The condition is specifically observed when the vehicle's "break-in mode" is active, which results in the temporary deactivation of the recuperation function.

Technical Background

Audi's TSB 2071255/1 explains the underlying reason for this sound. During the break-in mode, the vehicle's energy recuperation system is intentionally deactivated. This means that the hydraulic brake system is the sole method of retardation (slowing down the vehicle). The audible operation noise that originates from the brake master cylinder when the brake pedal is released is then perceived as a distinct knocking sound. This is not a malfunction but rather a characteristic sound of the hydraulic system operating under these specific conditions without the assistance of recuperation.

Important Information for Owners

Audi emphasizes several key points for owners regarding this Audi e-tron GT knocking brake pedal phenomenon:

• "No measures or replacement parts are required. This scenario represents normal behavior."
• "This TSB is informational only and not applicable to any Audi Warranty."
• The document explicitly states "Production Solution: Not applicable" and "Required Parts and Tools: Not applicable," reinforcing that no repair or parts are needed.

These statements confirm that the knocking noise is an expected operational characteristic during the break-in period and should not be considered a defect requiring warranty service.

Resolution and Owner Action

The knocking noise when releasing the brake pedal is temporary and will resolve itself. The break-in mode automatically ends based on the driver's profile, typically after the vehicle has been driven for up to 1000 miles. Once the break-in period concludes, the recuperation function is reactivated. At this point, the knocking noise will either cease entirely or occur at a significantly reduced level.

If you own a 2022-2024 Audi e-tron GT or RS e-tron GT and experience this Audi e-tron GT knocking brake pedal noise, there is no need for concern or immediate action. No service appointment or repair is necessary for this condition, as it is not a fault and will resolve on its own as your vehicle accumulates mileage. Your dealer will not perform any warranty repair for this specific noise, as it is considered normal behavior.

Source: NHTSA ID: 10241237, TSB 47 23 24 2071255/1