2021-2024 Audi A3/S3/RS 3/Q3 Front End Cracking Noise TSB

Symptoms of Front End Cracking Noise

Owners of certain 2021-2024 Audi A3, S3, RS 3, and Q3 models may experience a distinct cracking noise originating from the front end of their vehicle. This noise is particularly noticeable when changing direction.

Specifically, the symptom is described as a "Cracking noise from the front end when changing direction." Technicians have also observed a "one-off cracking noise from the front after changing direction" when the vehicle is pulling away.

Technical Background

Audi has identified the root cause of this cracking noise. It stems from relative movement of the drive axle within the wheel bearings. This movement can lead to the audible cracking sound reported by owners.

To address this, improved drive axles were gradually introduced into production. However, vehicles produced before this change may still exhibit the symptom.

Repair Procedure Summary

Audi Technical Service Bulletin 2061464/6 outlines a specific repair procedure to eliminate the front end cracking noise. The process involves addressing the drive axle assembly.

First, technicians are instructed to follow detailed instructions found in the Elsa repair manual for disassembling and assembling the drive axle. This includes procedures for the chassis, suspension, wheels, steering, and specifically the front axle and drive axle components.

Once the affected drive axle is disassembled, a liquid locking fluid, identified as part number D 154100A1, must be applied. This fluid is to be precisely applied around the threaded connection of the drive axle. After the application of the locking fluid, the drive axle is reinstalled according to the Elsa instructions.

Important Warnings

After assembling the drive axle(s), the vehicle must not be operated for 8 hours. This critical instruction ensures that the applied liquid locking fluid has sufficient time to cure and properly bond the components, preventing a recurrence of the issue and ensuring the integrity of the repair.

Required Parts and Tools

For this repair, specific materials are required:

• Locking fluid: Part number D 154100A1 (quantity 0.2).
• Fasteners, Bolts, Nuts, and Screws: These should be sourced as needed per the repair manual, typically referenced in ETKA/ELSA.

Warranty Information

This repair, outlined in Audi TSB 2061464/6, may be covered under warranty. The claim type is 110, applicable for vehicles up to 48 months or 50,000 miles. For Audi Certified Pre-Owned (CPO) vehicles, the claim type is G10, but owners should verify coverage.

If your vehicle is outside of its warranty period, this Technical Service Bulletin serves as informational guidance. The service number associated with this repair is 4041/4221, and the damage code is 0010.

Labor operations for this repair include:

• Bond in 1 front outer driveshaft: Labor operation 4041 4999 (90 TU).
• Bond in 2 front outer driveshafts: Labor operation 4041 5099 (120 TU).
• Bond 1 rear outer drive shaft: Labor operation 4221 4999 (10 TU).
• Bond 2 rear outer drive shafts: Labor operation 4221 5099 (10 TU).

Diagnostic times are also specified, including 10 TU for road tests both before and after the service procedure. All warranty claims must adhere to the Audi Warranty Policies and Procedures Manual.

Owner Action

If your 2021-2024 Audi A3, S3, RS 3, or Q3 is experiencing a "Cracking noise from the front end when changing direction," it is recommended to contact your authorized Audi dealership. Inform them about the specific symptom and mention Audi Technical Service Bulletin 2061464/6. The dealer can diagnose the issue and perform the necessary repair as described in the TSB. Be aware of the 8-hour non-operation period required after the repair.

NHTSA ID: 10250314