2022-2025 Audi quattro Ultra Vibrations or Binding TSB

Owners of 2022-2025 Audi vehicles equipped with quattro Ultra all-wheel drive may notice unusual noises or sensations, such as vibrations or binding, during specific driving conditions. Audi has issued Technical Service Bulletin (TSB) 39 24 70 2059057/11 to address these concerns, which are often reported as Audi quattro Ultra vibrations or binding in tight turns.

This TSB, dated August 30, 2024, supersedes previous bulletin 39 24-65 from July 27, 2024, and provides a detailed repair procedure for technicians to resolve the issue. The TSB applies to various Audi models, including the A4, A5, S5, RS 5, A6, A7, S6, S7, RS 6 Avant, RS 7, and A7 e quattro, across model years 2017-2025, specifically those with quattro Ultra all-wheel drive.

Symptoms of quattro Ultra Vibrations or Binding

Owners may experience the following symptoms related to Audi quattro Ultra vibrations or binding:

• Noises from the drive train (S tronic gearbox, manual gearbox, propshaft, and/or rear final drive) when pulling away quickly from a stop with the wheels turned.
• Vibrations, humming, droning, or rubbing felt in the vehicle interior and/or the rear seats when fully turning the steering wheel.
• Vibrations, humming, droning, or rubbing felt in the vehicle interior and/or on the rear seats when driving in a straight line, particularly in wet conditions.
• Noises that change as the operating temperature increases.
• Noises originating from the all-wheel drive coupling 1 of the S-tronic gearbox/manual gearbox.
• Noises from the rear of the vehicle, which can be traced to the rear final drive or propshaft.
• A knocking sound from the rear of the vehicle.

Understanding the quattro Ultra Issue

The technical background for these Audi quattro Ultra vibrations stems from the operational characteristics of the quattro Ultra system. The system's design can lead to varying speeds between the front axle differential and the rear final drive. This speed difference can manifest as humming, droning, vibrations, or rubbing, especially when taking very tight corners, driving in a straight line (particularly on wet roads), and when the all-wheel drive coupling 1 is closed.

Repair Procedure for Audi quattro Ultra Vibrations

To address the Audi quattro Ultra vibrations and binding, Audi outlines a specific repair procedure under TSB 39 24 70 2059057/11. Technicians are instructed to first reproduce the customer's concern to ensure the TSB is applicable. The repair involves the following steps:

1. Ensure the S-tronic transmission or manual transmission is at its operating temperature.
2. Completely drain and collect the Automatic Transmission Fluid (ATF) from the all-wheel drive coupling 1.
3. Add new ATF, specifically part number G 055 515 A2, according to the repair manual, and then set the ATF level correctly.
4. Confirm that the S-tronic transmission or manual transmission is at operating temperature again.
5. Allow the vehicle to cool down.
6. Perform the basic setting