2021-2022 Audi Front End Creaking Noise TSB

Audi has released Technical Service Bulletin (TSB) 2058489/6 to address customer complaints regarding creaking noises originating from the front end of certain 2021-2022 Audi models. This bulletin, which supersedes TSB Group 40 number 22-41 dated June 8, 2022, provides comprehensive instructions for diagnosing and repairing this specific issue.

Symptoms

Owners may experience an "Audi front end creaking noise" that manifests as squeaking, creaking, or similar sounds. These noises are typically heard from the front end of the vehicle when driving on uneven roads. The sounds can also be felt in the footwell or behind the dash panel, indicating a potential issue with the vehicle's suspension components.

Technical Background and Diagnosis

Audi's investigation has determined that the creaking noises are generated on the lower-left guide in the area of the hydro-bushing (referenced as Positions 7 and 8 in Figure 1 of the TSB). Technicians can often reproduce these noises during a workshop inspection.

It is important to note that parts such as the coupling rod (Position 30 in Figure 2 of the TSB) are frequently replaced by mistake, but this will not resolve the problem. The noises from the guide link can be transmitted into the vehicle interior due to the connection of the subframe on the body, making them noticeable in the footwell.

Important Warnings for Owners

• Do not replace parts like the coupling rod (Figure 2, Position 30) for this issue, as they are often replaced by mistake and will not resolve the creaking noise. The problem lies with the hydro-bushing or guide link.
• If your vehicle is outside of the specified warranty period (48 months/50,000 miles), this Technical Service Bulletin is for informational purposes only, meaning the repair costs may not be covered by Audi warranty.

Repair Procedure Summary

The repair procedure outlined in TSB 2058489/6 involves addressing the hydro-bushing or the entire guide link, depending on the vehicle's repair history.

1. Initial Repair (Hydro-Bushing Replacement): If the hydro-bushing has not been previously replaced, technicians are instructed to replace the hydro-bushing on the guide link in pairs (Figure 1, Position 8). This procedure must follow the instructions in the ELSA Repair Manual under Chassis >> Suspension >> Wheels, Steering >> 40 Front Axles >> Lower Control Arm and Ball Joint >> Guide link bonder rubber bushing, Removing and Installing.
2. Repeat Repair (Guide Link Replacement): If repeat repairs are necessary and the hydro-bushing has already been replaced (pressed out/in), the complete guide link must be replaced (Figure 1, Position 7). This procedure also refers to the ELSA Repair Manual under Chassis >> Suspension >> Wheels, Steering >> 40 Front Axles >> Lower Control Arm and Ball Joint >> Guide link, Removing and Installing.

Technicians are advised to precisely locate the source of the noise using acoustic testers and to check the repair history for any previous repairs related to this issue.

Required Parts and Tools

For the repair, the following parts are specified:

• Hydro-Bushing: Part Number 4M0407183B, Quantity 02.
• Guide Link: Required only if the hydro-bushing has been replaced previously and the noise persists. Specific part numbers should be referenced in ETKA.
• Fasteners, Bolts, Nuts, and Screws: As needed per the ELSA Repair Manual.

Warranty Information

Warranty claims for this repair should be submitted in accordance with the Audi Warranty Policies and Procedures Manual. The applicable claim types and coverage are:

• Claim Type 110: Covers repairs up to 48 months or 50,000 miles.
• Claim Type G10: Applicable for CPO (Certified Pre-Owned) covered vehicles with a verified owner.

The Damage Code for this issue is 0020. Service Number 4012 is used for the repair. Diagnostic time for a general fault finding (GFF) has no allowance. Road tests before and after the service procedure are allocated 10 Technical Units (TU) each, with diagnostic codes 0121 0002 and 0121 0004 respectively.

Repair times vary by model: 4016 2050 for A8, Q7, Q8 models, and 4016 2000 for e-tron models when replacing the hydro-bushing. For replacing the guide link, the repair time is 4012 5650.

Owner Action

If you own a 2021-2022 Audi Q7, Q8, A8, or e-tron and are experiencing an "Audi front end creaking noise," it is recommended to contact an authorized Audi service center. Describe the symptoms clearly and mention any previous attempts at repair. The dealership will be able to diagnose the issue using the guidelines provided in TSB 2058489/6 and perform the necessary repairs.

Source: NHTSA ID 10216010.