2021-2022 Audi Windshield Washer Hose Leak TSB

Owners of various 2021-2022 Audi models may experience issues with their windshield washer system due to a leak in the corrugated hose. This problem, identified in Technical Service Bulletin (TSB) 2065963/1, can lead to several noticeable symptoms and potentially affect the vehicle's electrical system.

Symptoms of a Windshield Washer Hose Leak

If you own a 2021-2022 Audi, including the Audi e-tron, and suspect a windshield washer hose leak, you might observe one or more of the following:

• "When the windshield washer system is operating the wash pressure is diminished."
• "The carpeting inside the cabin is wet."
• "There is an odor of windshield washer solvent inside the cabin."
• "Various malfunctions relating to the electrical system are experienced."

These symptoms point to a potential rupture in the corrugated windshield washer hose, which is often routed within the vehicle's cabin and can be intertwined with wiring harnesses.

Technical Background

The root cause of these issues is a leak in the corrugated windshield washer hose. This hose is located inside the cabin and is specifically vulnerable where it is wrapped among the wiring harness bundle. Damage to this hose can lead to solvent leaking into the cabin, causing the observed symptoms and potentially impacting electrical components.

Audi notes that the investigation into the production solution for this issue is ongoing.

Repair Procedure Summary

For technicians, the TSB outlines a specific repair process for the corrugated windshield washer hose leak:

1. Documentation: Before any repair, technicians must take clear photos of the damage, both from a distance and close-up, and upload them to DocIt. This documentation is crucial for Audi's ongoing investigation.
2. Hose Removal: A 100 mm section of the damaged corrugated washer hose (50 mm on each side of the rupture) must be removed. This section is then prepared for return to the WPRC (Warranty Parts Return Center) to aid in gathering additional information.
3. Repair Guidance: The repair procedure for ruptured corrugated windshield washer hoses can be found in the ElsaPro service information system. Technicians should navigate to "Electrical System >> Electrical Equipment General Information >> 92 Windshield Wiper/Washer System >> Washer Fluid Hoses >> Corrugated Hose Washer Fluid Line, Repairing."
4. Component Identification: Necessary repair components, such as convoluted tubing, coupling pieces, and shrink fit sleeves, are identified using the vehicle's VIN in the ETKA electronic parts catalog.
5. Wiring Repair: Any associated wiring damage must also be repaired during this service. The removed washer hose section should be packaged and retained for WPRC request for return.

Required Tools and Parts

To perform the repair for the Audi e-tron windshield washer leak, specific tools and parts are required:

• Parts:
  • Appropriate convoluted tubing material (sourced via ETKA)
  • Male coupling pieces (sourced via ETKA)
  • Female coupling pieces (sourced via ETKA)
  • Shrink fit sleeves (sourced via ETKA)
• Tools:
  • VAS1978/14A (Hot Air Blower)
  • VAS1978B (Wiring Harness Repair Set with Hot Air Blower)
  • VAS6228A (Hose Cutting Pliers)

Warranty Information

This repair is covered under Audi's warranty for up to 48 months or 50,000 miles, whichever comes first. For Certified Pre-Owned (CPO) vehicles, the claim type is G10, requiring owner verification. If the vehicle is outside of any applicable warranty, this Technical Service Bulletin is for informational purposes only, meaning the repair costs would be the owner's responsibility.

Important Warnings

Owners should be aware that if their vehicle is no longer under warranty, this Technical Service Bulletin serves as informational guidance only. The repair will not be covered by Audi in such cases.