2024-2025 Audi Q8 HVAC Whistling Noise TSB

Owners of 2024-2025 Audi Q8 e-tron and Q8 Sportback e-tron models may notice an Audi Q8 HVAC whistling noise emanating from the cabin when the heating, ventilation, and air conditioning (HVAC) blower is active. This issue is addressed by Audi Technical Service Bulletin (TSB) 2072609/1, issued on January 4, 2024.

Symptoms

Customers report hearing "A whistling noise can be heard in the cabin when the HVAC blower is active." This Audi Q8 HVAC whistling noise can occur at any blower fan speed. Technicians have pinpointed the sound specifically to the front right side of the vehicle, near the glove compartment.

Technical Background

The root cause of the whistling noise is that the cover for the dust and pollen filter is not fully engaged into the air intake housing. This incomplete fitment is due to interference from the interior wiring harness, which prevents the cover from seating properly. A visible gap in the cover allows air to escape, creating the whistle.

Repair Procedure Summary

To resolve the Audi Q8 HVAC whistling noise, technicians will perform a straightforward procedure outlined in TSB 2072609/1. First, they will visually inspect the dust and pollen filter cover for any gaps, indicating it's not fully engaged. Next, the cover will be removed to access the interior wiring harness.

The technician will then carefully press the interior wiring harness away from the dust and pollen filter opening. This creates the necessary clearance for the cover. Finally, the dust and pollen filter cover will be reinstalled, ensuring it is completely engaged and fully seated in the air intake housing. After reassembly, the HVAC system will be run briefly to confirm that the whistling noise has been eliminated. It is important to note that it is not necessary to replace the dust and pollen filter itself during this repair.

Warranty Information

This repair falls under specific warranty claim types. For vehicles within 48 months or 50,000 miles, Claim Type 110 applies. For Certified Pre-Owned (CPO) vehicles, Claim Type G10 is used, requiring owner verification. The labor operation code for repositioning the interior wiring harness and re-fitting the dust and pollen filter cover is 8515 4999, with an allowance of 30 time units (TU). The damage code associated with this issue is 0020. All warranty claims must adhere to the Audi Warranty Policies and Procedures Manual.

Important Warnings

Owners and technicians should be aware that during this repair, it is not necessary to replace the dust and pollen filter. The issue is with the cover's fitment, not the filter itself.

Source: NHTSA ID: 10249156, TSB ID: 2072609/1