2021-2025 Audi A3, S3, Q3 Front End Squeak TSB 2043424/18

Symptoms

Owners of 2021-2025 Audi A3, S3, and Q3 models may experience a distinct "Creaking/squeaking noises are heard from the left front or right front area of the vehicle when it is driven on uneven roads." This Audi A3 S3 Q3 front end squeak is typically noticeable when the vehicle encounters bumps or uneven road surfaces.

Workshop findings have consistently identified the source of these noises as the rear suspension link bush. This specific component is the focus of Audi's corrective action.

Technical Background

The root cause of the Audi A3 S3 Q3 front end squeak lies within the design of the rear elastomer bush of the transverse link on the front axle. This bush features kidney-shape slits. When the vehicle is driven over uneven roads, these slits allow for relative movements within the elastomer bush, which then generates the creaking or squeaking sounds reported by owners.

Audi Technical Service Bulletin 2043424/18 provides a detailed explanation and repair procedure to address this specific issue.

Repair Procedure Summary

The repair outlined in TSB 2043424/18 involves lubricating the affected suspension components. Technicians are instructed to first confirm the customer complaint by reproducing the Audi A3 S3 Q3 front end squeak to ensure it aligns with the conditions described in the bulletin.

The primary step involves removing the transverse link. Once removed, Lithium Grease (part number G052 150 A2) must be carefully applied to the kidney-shape slits of the rear elastomer bush from above. It is crucial that the grease is applied only within the designated areas, as illustrated in Figure 1 of the original bulletin. This procedure must be performed on both sides of the front axle to ensure a complete and lasting repair.

Required Parts and Tools

To perform the repair described in Audi TSB 2043424/18, specific parts and materials are required:

• Lithium grease: Part number G 052150A2 (Quantity 1). A specific variant, G 052150S0, is noted for use in SAGA warranty claims only.
• One-time use hardware: As needed, specified according to Elsa.
• Fasteners, Bolts, Nuts, and Screws: As needed, specified per the Repair Manual (refer to ETKA/ELSA).

It is important to note that 20 grams of Lithium grease (part number G052 150 A2) is necessary for lubricating both suspension links.

Warranty Information

For vehicles still under warranty, claims for this repair should be submitted using Service Number 4020 and Damage Code 0020. The labor operations associated with this repair include:

• 4017 20XX: Both lower control arms remove + reinstall.
• 9310 8350: Deactivate/Activate HV system voltage (applicable only to A3 e-tron models).
• 4020 4299: Grease 2 bonded rubber bushings (10 Technical Units).

Claims are to be processed as per TSB 2043424/18. If the vehicle is outside of its warranty period, this Technical Service Bulletin serves as informational guidance only, and any repairs would typically be at the owner's expense. All warranty claims are subject to review and audit by Audi Warranty according to their official policies and procedures.

Important Warnings

Owners should be aware that if their vehicle is no longer covered by warranty, this Technical Service Bulletin is provided for informational purposes only. This means that the repair procedure, while effective, may not be covered by Audi, and any associated costs would be the responsibility of the vehicle owner.

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Source: NHTSA ID: 11013710