2021-2023 Audi Engine Compartment Noise TSB 2063528/3

Owners of 2021-2023 Audi models may experience an Audi engine compartment noise that sounds like "combustion noises", "clattering", or "ticking from the injectors". This noise is typically heard inside the vehicle when accelerating between 1500 and 2300 rpm. Audi Technical Service Bulletin (TSB) 48 22 28 2063528/3 has been issued to provide diagnostic and repair guidance for this condition.

This TSB, dated April 28, 2022, supersedes an earlier bulletin, Group 48 number 21-13, from November 9, 2021. The issue is not necessarily related to engine components, but rather to how noise is transmitted into the cabin.

Symptoms

Customers report hearing various noises originating from the engine compartment or front end. These sounds are described as "combustion noises", "clattering", or "ticking from the injectors". The Audi engine compartment noise is most noticeable when the vehicle is accelerating within the 1500 to 2300 rpm range.

Diagnosis and Trigger Conditions

Several factors can contribute to noise being transmitted from the engine compartment into the vehicle's interior. A common cause is insufficient noise insulation at the opening for the intermediate steering shaft in the bulkhead. Technicians should first inspect the sealing boot to ensure it is correctly seated on both the intermediate steering shaft and the bulkhead, with no visible gaps.

Additionally, the height adjustment of the steering wheel can influence the presence of this noise. These initial checks help determine if a simpler adjustment or sealing correction can resolve the Audi engine compartment noise.

Repair Procedure Summary

If the initial checks of the sealing boot and steering wheel adjustment do not resolve the issue, the TSB directs technicians to proceed with the replacement of the intermediate steering shaft. This procedure must follow the detailed instructions found 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

For repairs involving the intermediate steering shaft, technicians will need to consult ETKA (Electronic Parts Catalog) for the correct fasteners, bolts, nuts, and screws as specified in the repair manual. A new intermediate steering shaft (quantity 01) will also be required, with part numbers to be sourced from ETKA.

Warranty Information

Warranty claims for this issue fall under Claim Type 110 for vehicles within 48 months or 50,000 miles. For Audi Certified Pre-Owned (CPO) vehicles, Claim Type G10 applies, requiring owner verification. The service number for this repair is 4816, with a damage code of 0010. Labor operations include "Steering column lower replace" (4816 1900) and road tests before (0121 0002) and after (0121 0004) the service procedure, each allotted 10 time units (TU). Diagnostic time is GFF with no allowance.

Important Warnings

Owners should be aware that if their vehicle is outside of its applicable warranty period, this Technical Service Bulletin 2063528/3 is provided for informational purposes only. Any repairs performed would likely be at the owner's expense.

Source: NHTSA ID: 10210569