2017-2022 Audi Models Engine Noise from Steering Shaft

Owners of various 2017-2022 Audi models, including the A4, A5, Q7, Q8, RS5, S4, S5, SQ7, SQ8, and RSQ8, may experience an Audi intermediate steering shaft noise emanating from the engine compartment. This issue is detailed in Audi Technical Service Bulletin (TSB) 48 21 04 2063528/1, which provides guidance for diagnosing and resolving these unwanted sounds.

The TSB clarifies that the noise may not necessarily originate from engine components but can be transmitted into the vehicle's interior. This article summarizes the symptoms, diagnostic steps, and repair procedures outlined in TSB 48 21 04 2063528/1 to help owners understand this specific Audi intermediate steering shaft noise.

Symptoms of Intermediate Steering Shaft Noise

Owners typically report hearing noises from the engine compartment or front end of their vehicle. These sounds are most noticeable when accelerating within the engine speed range of 1500 to 2300 rpm. The noises are often characterized as:

• Combustion noises
• Clattering sounds
• Ticking sounds, sometimes mistakenly attributed to injectors

Diagnosing the Audi Intermediate Steering Shaft Noise

According to TSB 48 21 04 2063528/1, there are multiple potential causes for engine compartment noise being transmitted into the cabin. A primary suspect is insufficient noise insulation at the opening where the intermediate steering shaft passes through the bulkhead.

Technicians are instructed to first check the sealing boot on the intermediate steering shaft. It is crucial to ensure that this boot is correctly seated on both the intermediate steering shaft and the bulkhead, with no visible gaps that could allow noise to pass through. An improperly sealed boot is a common contributor to the Audi intermediate steering shaft noise.

Additionally, the TSB notes that the height adjustment of the steering wheel might also influence the transmission of noise. If the initial check of the sealing boot does not resolve the issue, further investigation into the steering system is required.

Repair Procedure Summary

If a similar noise condition is confirmed and not resolved by adjusting the sealing boot or steering wheel, the TSB directs technicians to replace 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."

The repair involves removing the existing intermediate steering shaft and installing a new one, ensuring proper sealing and fitment to prevent noise transmission. The labor operation for this repair is identified as "Steering column lower replace" with service number 4816 5500.

Required Parts and Tools

For the intermediate steering shaft replacement, technicians will need the following:

• Intermediate Steering Shaft: Quantity 01, to be sourced via ETKA.
• Fasteners, Bolts, Nuts, and Screws: As needed per the repair manual, to be sourced via ETKA/ELSA.

Technicians should always consult their Parts Department and/or ETKA for the most current information on parts and bulletins.

Warranty and Service Information

Warranty claims for this issue are processed under specific conditions:

• Claim Type 110: Applicable for vehicles up to 48 months or 50,000 miles.
• Claim Type G10: For Certified Pre-Owned (CPO) vehicles, requiring owner verification.

If the vehicle is outside of its warranty period, this Technical Service Bulletin is for informational purposes only. All warranty claims must adhere to the Audi Warranty Policies and Procedures Manual and are subject to review or audit by Audi Warranty.

The service number associated with this TSB is 4816, and the damage code is 0010. Diagnostic time is listed as GFF with no allowance (0 TU). Labor operations include:

• Steering column lower replace: 4816 5500
• Road test prior to the service procedure: 0121 0002 (10 TU)
• Road test after the service procedure: 0121 0004 (10 TU)

Important Note for Owners

If your Audi is experiencing an Audi intermediate steering shaft noise and is outside the warranty period, the repair described in TSB 48 21 04 2063528/1 would typically be at your expense. It is always recommended to have a qualified Audi technician diagnose the issue to confirm the cause and appropriate repair.

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Source: NHTSA ID: 10197899