2022-2024 Audi e-tron GT Brake System Software Update

Audi has released a circular revision concerning the e-tron GT brake software update, identified as UPDATE 49A4/Brake System Software Update – (NVLW). This notice, dated April 09, 2024, informs dealer personnel about updates made to the work procedure for this important software campaign. It emphasizes the need for all dealership staff with campaign-related responsibilities to review the revised circular published in ELSA and Service References in Elsa2Go to ensure accurate and up-to-date service.

This revision to the 49A4 campaign ensures that technicians have the most current instructions for performing the necessary software update, which is crucial for maintaining the performance and safety of affected vehicles.

Symptoms Addressed by the Update

The original purpose of the 49A4 Brake System Software Update is to resolve specific issues related to the vehicle's braking system. Owners of affected Audi e-tron GT and RS e-tron GT models may experience:

• Operating noises from the hydraulic unit that are louder than usual.
• Increased brake pedal travel, particularly at very low speeds.

These symptoms indicate a potential issue with the brake system's operation, which the software update aims to rectify, improving both comfort and braking consistency.

Repair Procedure Summary

The core of the 49A4 campaign involves a software update to the brake system. While this specific document is a revision to the existing work procedure, it confirms that the remedy is software-based. Technicians will connect the vehicle to Audi's diagnostic system to install the latest software version for the brake control module. This process typically involves flashing the module with new programming designed to optimize the hydraulic unit's operation and address the pedal travel concerns.

This e-tron GT brake software update is a standard procedure for modern vehicles, where electronic control units manage various systems. Software updates can fine-tune performance, correct anomalies, and enhance overall vehicle behavior without requiring physical component replacement.

What Owners Should Know

Owners of 2022-2024 Audi e-tron GT and RS e-tron GT vehicles who have experienced the described symptoms, such as unusual hydraulic unit noise or excessive brake pedal travel at low speeds, should contact their authorized Audi dealership. Even if you have previously had the 49A4 update performed, this revision indicates that the procedure may have been refined, and your dealer will have the most current instructions.

Audi is committed to ensuring that all dealer personnel are fully informed about this revision to the e-tron GT brake software update so they can accurately address customer questions and perform the service correctly. This type of communication helps maintain consistent service quality across the dealership network.

NHTSA ID: 10253339