2021 Audi Front Suspension Noise TSB

Owners of certain 2021 Audi models may notice a distinct 2021 Audi front suspension noise, specifically described as rumbling or squeaking from the front end of the vehicle. This issue is addressed by Audi Technical Service Bulletin (TSB) 40 20 06 2059474/1, which provides guidance for technicians to diagnose and resolve the problem.

Symptoms

The primary symptom reported by customers is a "Rumbling or squeaking noises from the front end." This noise originates from the front suspension system, indicating a potential issue with components in that area.

Diagnosis

Workshop findings indicate that the source of the 2021 Audi front suspension noise is the buffer stops of the shock absorbers. These buffer stops are found to be incorrectly seated within the shock absorber mounting. The TSB notes that recent improvements in suspension design led to a change in the buffer stop material to increased hardness, making them more difficult to press into the mountings correctly during assembly.

Repair Procedure Summary

To resolve the rumbling or squeaking noises, technicians are instructed to perform the following steps as outlined in TSB 40 20 06 2059474/1:

1. Secure Buffer Stops: The buffer stops must be correctly secured and completely pressed into place. A tire assembly paste can be used as an aid to facilitate this process.
2. Address Deformed Buffer Stops: If the buffer stops appear deformed, possibly due to vehicle transport, technicians should attempt to reshape them by warming them up slightly. If reshaping is not possible, the affected components must be replaced.

This procedure aims to ensure the buffer stops are properly seated, eliminating the source of the 2021 Audi front suspension noise.

Required Parts and Tools

Technicians will need to consult ETKA (Audi's electronic parts catalog) for the latest information on required parts and bulletins. This may include fasteners, bolts, nuts, and screws as specified in the repair manual. A new buffer stop may be required if the existing one cannot be correctly seated or is deformed beyond repair.

Warranty Information

This repair may be covered under warranty for up to 48 months or 50,000 miles, whichever comes first. The Service Number for this issue is 4098, and the Damage Code is 0020. Specific labor operations include:

• Buffer stop remove + reinstall (Labor Operations 4098 1950 and 4098 2050)
• Secure 1 front axle buffer stop (Labor Operation 4098 1399)
• Secure 2 front axle buffer stop (Labor Operation 4098 1499)

Diagnostic time includes road tests before (0121 0002) and after (0121 0004) the service procedure. All warranty claims must adhere to the Audi Warranty Policies and Procedures Manual.

Important Warnings

Owners should be aware that if their 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.

Owner Action

If you own a 2021 Audi model and are experiencing rumbling or squeaking noises from the front end, it is recommended to schedule an appointment with an authorized Audi service center. Inform them about the specific symptoms you are experiencing. Referencing TSB 40 20 06 2059474/1 can help ensure your service center is aware of the known issue and the recommended repair procedure.

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Source: NHTSA ID: 10175371