2021 Audi e-tron, Q3, Q8 Sunroof Water Leak TSB

Owners of certain 2021 Audi models may experience water entering the cabin from the sunroof area, often manifesting as a water drip from the headliner. This issue is addressed by Audi Technical Service Bulletin (TSB) 60 20 44 2056944/4, which outlines various potential causes and repair procedures.

The TSB, which supersedes previous bulletin 20-43, provides detailed steps for technicians to diagnose and resolve the problem, ensuring proper water drainage and sealing within the sunroof system.

Symptoms

The primary symptom reported by vehicle owners is:

• Water dripping from the headliner area. This can occur after rain, during a car wash, or even while driving, especially if the sunroof was recently opened or vented when wet. The water may migrate along the wind deflector hinge arms and into the wind deflector stowage area, which is not designed for water drainage.

Fault Codes / DTCs

No specific Diagnostic Trouble Codes (DTCs) are mentioned in this Technical Service Bulletin related to the sunroof water leak. The issue is primarily diagnosed through visual inspection and functional checks of the sunroof system components.

What the Service Bulletin Says

Audi Technical Service Bulletin 60 20 44 2056944/4 details a comprehensive inspection and repair process for the sunroof system to prevent water entry into the cabin. The bulletin identifies several potential root causes for the water leak:

1. Sunroof Drain Hoses or Outlet Valves: Technicians are instructed to visually inspect all four sunroof drain hoses and outlet valves for any damage or obstruction. If pinched or blocked, the drain hose(s) or valve(s) should be replaced (Service number 6048).
2. Roof Opening Seal: The entire perimeter of the roof opening seal should be inspected for detachment, malformation, or damage. Any compromised seals must be replaced (Service number 6042).
3. Glass Sunroof Panels: The adjustment of the sunroof glass panels must be checked. If dimensional measurements reveal a problem, adjustments to the glass panels are necessary (Service number 6039).
4. Sunroof Frame Water Entry: For unexplained water entry that appears to come through the sunroof frame, the bulletin advises against replacing the entire frame unless there is structural damage. Instead, technicians should perform sunroof frame modifications (Service number 6039 9999). This involves thoroughly cleaning the sunroof frame area using D 00940104 all-purpose cleaner and D 00950025 primer applicator, then applying AKL45000505 butyl adhesive/sealing cord into the grooves, and bonding 251201525 packing pads to the front areas of the sunroof glass panel 'skirt'. A 3356 roller tool is used to enhance adhesion.

The bulletin also specifies a Damage Code 0050 for warranty claims related to this issue.

What to Do

If you own a 2021 Audi e-tron, Q3, or Q8 and notice water dripping from your vehicle's headliner, it is important to address the issue promptly to prevent further damage to the interior. This Audi e-tron sunroof water leak can lead to electrical problems or mold growth if left untreated.

Contact an authorized Audi service center to schedule an inspection. Inform them about the symptoms you are experiencing and mention Technical Service Bulletin 60 20 44 2056944/4. Your dealer will be able to perform the necessary diagnostic and repair procedures outlined in the TSB. Warranty coverage for this repair typically extends up to 48 months or 50,000 miles, and may also apply to CPO (Certified Pre-Owned) vehicles.

Source: NHTSA ID 10181372