2021-2022 Audi A6 / S6 / RS 6 Headlight Crack Marks TSB

Owners of certain 2021-2022 Audi A6, S6, and RS 6 models may notice what appear to be "crack-like marks in upper headlight lens." Audi has issued Technical Service Bulletin (TSB) 94 21 40 2055803/3 to address these observations. This bulletin clarifies that these marks are a normal characteristic of the headlight manufacturing process and are not a defect.

This TSB, issued on June 23, 2021, supersedes an earlier bulletin, Group 94 number 19-17, dated December 6, 2019. It provides important information for both owners and technicians regarding the appearance of these marks.

Symptoms

Owners might observe "scratch/crack-like marks on the inside of the lens in the upper area of the headlight." These marks can be present on both the left and right headlights. If you see these marks and are concerned about the appearance of your Audi A6 headlight crack marks, this TSB provides clarification.

Technical Background

Audi explains that these perceived marks are not actual cracks or damage. They are referred to as "slide separation marks of the casting mold on the transparent part of the lens." These marks are an inherent result of the manufacturing process, specifically caused by the casting molds used to produce the headlight lens. The marks are necessary for the removal of the casting mold during production.

Important Information for Owners

It is crucial for owners to understand that these "slide separation marks of the casting mold" do not impact the functionality or performance of the headlight. The TSB explicitly states that the headlight beam is not affected, as these marks are not located on the light emission surface of the lens. Furthermore, parts replacement does not solve this issue. Claims for replaced parts will be subject to review. This means attempting to replace the headlight assembly will not eliminate the marks and will likely not be covered under warranty, as it's not a defect.

TSB Details and Revision History

Technical Service Bulletin 94 21 40 2055803/3 is an informational document. It has undergone several revisions to include additional model years and clarify information:

• Revision 3 (June 23, 2021): Revised header, adding Model Year 2022.
• Revision 2 (December 6, 2019): Revised header, adding Model Year 2021.
• Revision 1 (August 5, 2019): Initial publication.

What Owners Should Know

If you observe what appears to be Audi A6 headlight crack marks on your vehicle, rest assured that this is a normal characteristic. This TSB serves to inform owners and technicians that these marks are design-related and do not indicate a fault or compromise the headlight's performance. There is no repair procedure for these marks, as they are not considered a defect. This TSB is informational only and is not applicable to any Audi Warranty claims for this specific condition.

Source: NHTSA ID: 10198236