2021-2025 Audi Panoramic Sunroof Leaking TSB

Symptoms of a Leaking Panoramic Sunroof

Owners of affected 2021-2025 Audi vehicles might notice several signs indicating a problem with their panoramic sunroof. The primary symptom of an Audi panoramic sunroof leaking is water entering the vehicle's interior. This can manifest as a wet headliner or damp footwell areas.

Technicians performing diagnostics may also find water accumulating in the dry area of the wind deflector storage compartment, which is a key indicator of this specific issue.

Repair Procedure Summary

Addressing the Audi panoramic sunroof leaking issue involves specific modifications to the sunroof components, tailored to the vehicle's production period and existing parts. The repair process begins by identifying the specific 'version' of the sunroof installed, which dictates the necessary modifications. Not all vehicles will require every modification.

The general procedure involves several key steps:

1. Component Inspection: Technicians first identify the specific configuration of the glass panel, rubber buffers, mechanism flapper valve, wind deflector tilt lever, and guide rail. The TSB outlines eight different component variations based on production periods (e.g., Version 1 for week 11/2018 to 03/2020, Version 5 for week 12/2022 to 10/2025).
2. Surface Preparation: Areas receiving new components, such as the glass panel trim and guide rail channels, are thoroughly cleaned using cleaning solution D 009 401 04 and primed with primer D 355 205 A2 and primer applicator D 009 500 25. This ensures proper adhesion of new materials.
3. Rubber Buffer Installation/Removal: Depending on the sunroof version, rubber buffers (part number 251 201 525) may be attached or removed from the glass panel trim. These buffers are cut to specific sizes (e.g., 10x10 mm) and pressed firmly into place to create a seal.
4. Butyl Barrier Application: Butyl adhesive sealing cord (AKL 450 005 05) is applied to the guide rail channels and under cover caps. This involves cutting the cord to size (e.g., 20 mm or 10 mm) and ensuring the channels are completely filled to prevent water ingress.
5. Flapper Valve Modification: The flapper valve within the sunroof mechanism may need to be removed or modified, depending on the vehicle's configuration.
6. Glass Panel Adjustment: After modifications, the glass panel's adjustment is checked to ensure proper fit and sealing.

This detailed approach ensures that the specific vulnerabilities in each sunroof configuration are addressed to prevent future water intrusion.

Required Tools or Parts

To perform the necessary modifications for the panoramic sunroof leak, specific materials are required:

• Cleaning solution: D 009 401 04
• Primer: D 355 205 A2
• Butyl adhesive sealing cord: AKL 450 005 05
• Rubber buffers: 251 201 525
• Primer applicator: D 009 500 25

Technicians will also utilize standard workshop tools for component removal, cleaning, and installation.

Owner Action

If you are experiencing symptoms of an Audi panoramic sunroof leaking, such as a wet headliner or footwell, it is recommended to contact your authorized Audi dealer. They can diagnose the specific cause and apply the appropriate modifications outlined in TSB 2079226/2.

For warranty claims, the service number is 6039 and the damage code is 0050. Labor operations for adjusting or modifying the glass panel, or removing and installing the wind deflector, are also specified within the TSB. Warranty coverage will be determined by the Audi Warranty Policies and Procedures Manual.

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Source: NHTSA ID 11026226