2022-2026 Audi Windshield Washer Hose Leak TSB

Audi has released Technical Service Bulletin (TSB) 2065963/2 to address a potential issue with the corrugated hose in the windshield washer system. This TSB, dated October 2, 2023, supersedes an earlier bulletin (Group 92 number 22-28 dated February 8, 2022) and provides updated information for a wider range of model years and vehicles, including the Q8 e-tron and Q4 e-tron.

Symptoms of an Audi Windshield Washer Hose Leak

Owners of affected Audi vehicles may observe one or more of the following symptoms related to an Audi windshield washer hose leak:

• Diminished wash pressure when operating the windshield washer system.
• Wet carpeting inside the vehicle cabin.
• A noticeable odor of windshield washer solvent inside the cabin.
• Various malfunctions relating to the electrical system.

Technical Background

The root cause of these issues is a leak that develops in the corrugated windshield washer hose. This hose is located inside the cabin and is often wrapped among the vehicle's wiring harness bundle. Damage to the hose can lead to solvent leaks, which may then affect the surrounding electrical components.

Diagnosis and Repair Procedure Summary

Before any repair, technicians are instructed to document the damage thoroughly. This involves taking clear photographs (both close-up and from a distance) and uploading them to Audi's Doc-IT system. Following documentation, a 100 mm section of the damaged hose (50 mm on each side of the damage) must be removed and retained for potential return to the WPRC (Warranty Parts Return Center) for further investigation.

The specific repair procedure for a ruptured corrugated windshield washer hose is detailed within the Elsa repair manual. Technicians can find this information by navigating to:

• Electrical System >> Electrical Equipment General Information >> 92 Windshield Wiper/Washer System >> Washer Fluid Hoses >> Corrugated Hose Washer Fluid Line, Repairing.

It is crucial to repair any associated wiring damage that may have occurred due to the solvent leak. Repair components, such as convoluted tubing, coupling pieces, and shrink-fit sleeves, can be identified using the vehicle's VIN in the ETKA parts catalog.

Required Tools or Parts

To perform the repair for an Audi windshield washer hose leak, technicians will need specific tools and parts. These include:

• Convoluted tubing: Quantity 0.01 (identified via ETKA).
• Male coupling piece: Quantity 1.0 (identified via ETKA).
• Female coupling piece: Quantity 1.0 (identified via ETKA).
• Shrink fit sleeves: Quantity 0.2 (identified via ETKA).
• VAS1978/14A Hot Air Blower or VAS1978B Wiring Harness Repair Set with Hot Air Blower.
• VAS6228A Hose Cutting Pliers (or equivalent).

Warranty Information

This repair is covered under warranty for vehicles up to 48 months or 50,000 miles. For Certified Pre-Owned (CPO) vehicles, the claim type is G10, requiring owner verification. If the vehicle is outside of its warranty period, this Technical Service Bulletin is for informational purposes only, meaning the repair cost may not be covered.

• Service Number: 9254
• Damage Code: 0050
• Labor Operations:
  • Windshield washer system hose repair (after access gained to damage site): 9254 4100
  • GFF - Checking and clearing fault codes (included in existing labor operations): 0150 0000

All warranty claims must adhere to the Audi Warranty Policies and Procedures Manual and are subject to review or audit by Audi Warranty.

Source: NHTSA ID 10243973