2021 Audi Q5, Q7, Q8 Front Suspension Noise TSB

Owners of certain 2021 Audi Q5, Q7, and Q8 models may experience rumbling or knocking noises emanating from the front suspension, particularly when driving over uneven roads. This issue, which can be consistently reproduced in a workshop setting, is addressed by Audi Technical Service Bulletin (TSB) 2059996/1.

Symptoms

If you own a 2021 Audi Q5, Q7, or Q8, you might notice a distinct rumbling or knocking noise coming from the front end of your vehicle. This noise is most apparent when the vehicle encounters uneven road surfaces. Technicians can typically replicate the Audi Q8 front suspension noise during diagnostic checks.

Technical Background

Audi has identified that the underlying cause of this front suspension noise is often related to tension within the vehicle's body structure. This tension can manifest as noise, particularly at the bolted connection of the tower brace, a critical component designed to enhance chassis rigidity.

Repair Procedure Summary

To resolve the rumbling or knocking noises from the front suspension, Audi TSB 2059996/1 outlines a straightforward repair process for technicians:

1. Inspect the Tower Brace Connection: The first step involves checking the bolted connection of the tower brace. The tower brace is a structural component that connects the top of the suspension towers, helping to stiffen the chassis and improve handling. A loose connection can lead to unwanted movement and noise.
2. Secure the Bolt: If the bolted connection is found to be loose, technicians must secure the bolt to the correct torque specification. This is a critical step, as improper torque can either leave the issue unresolved or potentially cause other problems. The precise torque values are found in the Audi repair manual.
3. Reassess the Concern: After securing the bolt, the vehicle should be re-evaluated to ensure the rumbling or knocking noise has been eliminated.

For detailed instructions, technicians are directed to the Elsa Repair Manual, specifically under Chassis >> Suspension, Wheels, Steering >> 40 Front Suspension >> Suspension Strut, Upper Control Arm >> Overview Tower Brace. Figures within the TSB provide visual examples of the tower brace for Audi Q7 and Audi Q5 models, guiding technicians through the inspection points.

Warranty Information

This repair, as detailed in TSB 2059996/1, falls under Audi's warranty Claim Type 110, covering vehicles up to 48 months or 50,000 miles, whichever comes first. The Service Number for this procedure is 4086, with a Damage Code of 0010. Labor operations include checking the torque for the tower brace (Labor Operation 4086 XXXX, 20 Technical Units or TU) and performing road tests both before (0121 0002, 10 TU) and after (0121 0004, 10 TU) the service procedure. Diagnostic time (GFF) is listed with no allowance (0 TU). For warranty claims, the comment should reference As per TSB #2059996/1.

Important Warnings for Owners

It is crucial for owners to understand that if their vehicle is outside the specified warranty period (48 months or 50,000 miles), this Technical Service Bulletin is for informational purposes only. In such cases, the cost of diagnosis and repair may not be covered by Audi. Always consult with an authorized Audi service center to confirm your vehicle's warranty status and potential costs.

What Owners Should Do

If you are experiencing a rumbling or knocking noise from the front suspension of your 2021 Audi Q5, Q7, or Q8, it is recommended to contact your local authorized Audi dealership. Describe the Audi Q8 front suspension noise and the conditions under which it occurs. Reference Audi TSB 2059996/1 to ensure technicians are aware of the known issue and the prescribed repair procedure. The dealership will be able to diagnose the problem and perform the necessary checks and adjustments to the tower brace connection.

Source: NHTSA ID 10177302