2022-2026 Audi e-tron GT Wet Footwell & Musty Smell TSB

Symptoms of Moisture in the Footwell

Owners of affected Audi models, including the 2026 Audi S e-tron GT, may notice a distinct "musty or damp smell in the passenger compartment." This odor is often accompanied by the presence of a "wet footwell" in the front of the vehicle. These symptoms indicate an issue with moisture intrusion.

Workshop technicians have confirmed that these complaints can be consistently reproduced, allowing for proper diagnosis and repair.

Technical Background: Why it Happens

The root cause of the moisture and odor is traced back to the air conditioning system. Specifically, condensation from the air conditioning unit is entering the passenger compartment. This occurs due to the incorrect installation of the AC drain hose.

Over time, this continuous moisture exposure leads to the development of a musty smell and causes the carpet in the footwell to become wet. Addressing the drain hose installation is crucial to resolve the issue and prevent further damage.

Repair Procedure Summary

Audi Technical Service Bulletin 2076642/1 outlines a straightforward repair process focused on correcting the position of the AC drain hose. Technicians are instructed to check the current installation of the drain hose and adjust it as necessary.

Visual aids are provided in the bulletin to guide technicians for various models. Figure 1 shows the assembly overview for the Audi Q4 e-tron, Figure 2 details the assembly for the Audi e-tron GT, and Figure 3 illustrates the assembly for the Audi Q6 e-tron. These figures help ensure the drain hose is correctly positioned to prevent condensation from entering the cabin, which can cause a "wet footwell" and musty smell.

Warranty Information

For vehicles still under warranty, claims for this repair should be submitted using Service Number 8791 and Damage Code 0018. The labor operation for this fix is "Remove and install water drain hose," identified by code 8791 19XX. All claims must adhere to the Audi Warranty Policies and Procedures Manual.

Important Warnings

Owners should be aware that if their vehicle is outside of any applicable warranty, this Technical Service Bulletin 2076642/1 is provided for informational purposes only. In such cases, the cost of diagnosis and repair may not be covered by Audi.

Owner Action

If you experience a musty or damp smell in your passenger compartment or notice a wet footwell in your 2022-2026 Audi e-tron GT, Q4 e-tron, Q4 Sportback e-tron, Q6 e-tron, or SQ6 e-tron, it is recommended to contact your authorized Audi dealership. Inform them of the symptoms you are experiencing and mention Audi Technical Service Bulletin 2076642/1. The dealership can diagnose the issue and perform the necessary repair to correct the AC drain hose installation and eliminate the "Audi S e-tron GT wet footwell" problem.

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NHTSA ID: 11013742