2021 Audi Q7/Q8/SQ7/SQ8/RS Q8 Milky Window TSB

Symptoms

Owners of certain Audi models, including the 2021 Audi Q7, Q8, SQ7, SQ8, and RS Q8, may observe that the rear door and/or rear side windows have a distinct "milky" or "cloudy" appearance. This visual characteristic is often noticeable from both the interior and exterior of the vehicle. When customers report this concern, workshops have been able to duplicate the condition, confirming the presence of the milky or cloudy windows. If you notice your Audi Q8 milky windows, this bulletin addresses the concern.

Technical Background

Audi Technical Service Bulletin 64 21 78 2062828/1 explains that the rear door and/or rear side windows on these models may appear cloudy or milky. This appearance is illustrated in Figure 1 of the bulletin, which shows the rear side windows exhibiting this characteristic. Despite this visual condition, Audi confirms that these windows are fully compliant with the series approval status. This means they meet all manufacturing, quality, and safety standards established for the vehicle line. Therefore, the presence of Audi Q8 milky windows is not considered a manufacturing defect.

Important Warning for Owners

Audi Technical Service Bulletin 64 21 78 2062828/1 contains critical instructions for dealers and important information for owners. The bulletin explicitly states that no repair is available at this time for the milky or cloudy appearance of the rear side windows. Dealers are given a direct instruction: "Do not perform any repairs. Any repairs for this concern may be denied." Furthermore, technicians are advised to "Instruct the customer that this condition is normal." This means owners should not expect a repair for this condition, and any attempts to seek one will likely be unsuccessful and not covered by warranty.

Service Procedure

As per the bulletin, there is no specific service procedure or repair available for the milky or cloudy appearance of the rear side windows. The "Production Solution" section of the TSB is marked as "Not applicable," indicating that no manufacturing change or fix is being implemented. Technicians are explicitly instructed not to attempt any repairs for this condition, as such repairs will not resolve the appearance and may be denied by Audi. The primary action for service personnel is to inform the customer that the condition is considered normal.

Warranty Information

This Technical Service Bulletin (TSB) is classified as "informational only" by Audi. Consequently, it is "not applicable to any Audi Warranty." This means that any diagnostic work or attempted repairs related to the milky or cloudy rear side windows will not be covered under Audi's standard warranty provisions. Owners should be aware that this condition is not considered a warrantable defect.

Additional Information for Technicians

The bulletin, identified by the number 2062828, reminds technicians that all part and service references are subject to change. It advises checking with the Parts Department and/or ETKA for the latest information and parts bulletins. Additionally, technicians should consult the Repair Manual for details on fasteners, bolts, nuts, and screws that may require replacement during any related repair, although this specific TSB indicates no repair is needed for the window appearance itself.

What Owners Should Know

If you own a 2021 Audi Q7, Q8, SQ7, SQ8, or RS Q8 and observe the "Rear side windows are milky/cloudy in appearance," it is crucial to understand that this is not considered a defect by Audi. Technical Service Bulletin 64 21 78 2062828/1 clarifies that this is a normal characteristic of the vehicle. Attempting to have this condition repaired at an authorized dealership will likely result in the service being denied, as it is not covered under any Audi Warranty. The bulletin serves to manage customer expectations and prevent unnecessary service attempts for a non-issue.

Manufacturer Communication

This information is detailed in Audi Technical Service Bulletin 64 21 78 2062828/1, which was issued on April 2, 2021. The bulletin's primary purpose is to provide clarity to both technicians and customers regarding the normal characteristics of the rear side windows on the affected models. It aims to prevent unnecessary diagnostic work or attempted repairs for a condition that is deemed acceptable by the manufacturer.

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Source: NHTSA ID: 10190281