2021-2022 Audi Engine Compartment Noise TSB 2063528/2

Owners of certain 2021-2022 Audi models may notice unusual noises emanating from the engine compartment that are audible inside the vehicle. Audi has issued Technical Service Bulletin (TSB) 2063528/2 to provide guidance for diagnosing and resolving this specific Audi engine compartment noise issue.

This bulletin, identified as 48 21 13 2063528/2, supersedes Technical Service Bulletin Group 48 number 21-04 dated June 9, 2021. The revision primarily updates warranty labor operations.

Symptoms

Customers report hearing noises from the engine compartment or front end, particularly when accelerating between 1500 and 2300 rpm. These sounds are often described as "combustion noises," or as "clattering or ticking from the injectors."

Diagnosis / Trigger Conditions

The TSB clarifies that the root cause of the Audi engine compartment noise is not necessarily related to engine components. Technicians should investigate two primary areas:

1. Intermediate Steering Shaft Sealing Boot: Inspect the sealing boot on the intermediate steering shaft and the bulkhead. Ensure it is seated correctly and there are no visible gaps that could allow noise to transmit into the cabin. Figure 1 in the original bulletin illustrates a poor sealing condition on the intermediate shaft.
2. Steering Wheel Height Adjustment: The height adjustment of the steering wheel can also influence the transmission of these noises.

Repair Procedure Summary

If a similar condition is identified in the vehicle, the repair procedure involves addressing the sealing of the intermediate steering shaft or its replacement. The steps are as follows:

1. Inspect Sealing Boot: Verify the sealing boot on the intermediate steering shaft is correctly seated on both the shaft and the bulkhead, ensuring no visible gaps are present.
2. Steering Wheel Adjustment: Check if the steering wheel's height adjustment is contributing to the noise.
3. Intermediate Steering Shaft Replacement: If the inspection reveals a condition consistent with the noise, the intermediate steering shaft should be replaced. This procedure must follow the instructions detailed in the Elsa repair manual, specifically under "Chassis >> Suspension, Wheels, Steering >> 48 Steering >> Steering Column >> Steering Intermediate Steering Shaft, Removing and Installing."

Required Tools or Parts

Technicians will need to consult ETKA for the latest information on required parts. These may include:

• Fasteners, Bolts, Nuts, and Screws as needed per the repair manual.
• Intermediate Steering Shaft (quantity 01).

Important Warnings

Owners should be aware of the warranty implications for this service. While the repair is covered for vehicles under warranty (up to 48 months/50,000 miles) and for CPO (Certified Pre-Owned) vehicles (Claim Type G10), if the vehicle is outside of any warranty, this Technical Service Bulletin is for informational purposes only. This means the repair cost may not be covered by Audi.

Owner Action

If you are experiencing an Audi engine compartment noise described as clattering or ticking from the front end of your 2021-2022 Audi A4, A5, Q7, Q8, S4, S5, SQ7, SQ8, RS 5, or RS Q8, it is recommended to schedule an appointment with an authorized Audi service center. Reference TSB 2063528/2 when discussing the issue with your technician. They will perform the necessary diagnostic checks and repairs as outlined in the bulletin.

Source: NHTSA ID: 10203477