2020-2026 Audi Rear Suspension Noise TSB 2038689/10

Owners of various 2020-2026 Audi models may experience rumbling or squeaking noises emanating from the rear of their vehicle. This common complaint is addressed by Audi Technical Service Bulletin (TSB) 2038689/10, which identifies the cause as improperly seated or dislodged bump stops within the shock absorbers. This TSB provides a specific procedure for technicians to correctly secure these components, aiming to eliminate the bothersome Audi e-tron rear suspension noise and similar issues across the affected lineup.

Symptoms

Owners typically report:

• Rumbling noises from the rear end of the vehicle.
• Squeaking noises from the rear end of the vehicle.

These noises are often traced back to the bump stops of the shock absorbers, which may not be seated correctly or could have fallen out entirely.

Technical Background and Diagnosis

Audi's recent suspension redevelopment has introduced bump stops with increased hardness, making their proper installation into mountings more challenging. If these components, which act as additional springs, are not correctly pushed back into the shock absorber mounting during the pre-delivery inspection, they can dislodge and drop onto the shock absorber tube. This improper seating is the underlying cause of the Audi e-tron rear suspension noise and other audible complaints from the rear of the vehicle.

Repair Procedure Summary

To rectify the issue of loose or dislodged bump stops causing rear suspension noise, technicians are instructed to secure the bump stops correctly. This involves pressing the bump stops all the way into their proper position. If a bump stop is found to be deformed, it should be gently warmed up to allow it to reshape correctly before reinstallation. A tire assembly paste can be used as an aid to facilitate the proper seating and securement of the bump stops.

Required Tools or Parts

The following specialized tool and material are recommended for this repair:

• Assembly lever T40401 (SET 900): This specific lever is designed to assist in correctly pressing the bump stops into their mountings.
• Tire assembly paste: Can be used to aid in the secure seating of the bump stops.

Owner Action

If you notice rumbling or squeaking noises from the rear of your 2020-2026 Audi, it is advisable to contact an authorized Audi service center. While this TSB is informational and generally not applicable to warranty claims for the repair itself, addressing the issue promptly can prevent potential further suspension wear or discomfort. Technicians will follow the procedure outlined in TSB 2038689/10 to inspect and secure the bump stops, resolving the Audi e-tron rear suspension noise or similar issues.

Source: NHTSA ID: 11025239