2021-2023 Nissan Window Glass Foreign Material TSB

Nissan has issued Technical Service Bulletin (TSB) NTB13-028H to provide a recommended procedure for removing foreign material from the surface of vehicle window glass. This bulletin, which has undergone several amendments, outlines a specific method to address common contaminants without causing damage.

The TSB applies to a wide range of Nissan vehicles from model years 2021-2023, offering a practical solution for owners encountering stubborn spots or residue on their windows. The goal is to help technicians and owners effectively clean glass surfaces, potentially avoiding the need for glass replacement.

Symptoms

Owners may notice various types of foreign material on their vehicle's window glass, such as sap, tar, paint overspray, or other environmental contaminants. These materials can obscure vision and detract from the vehicle's appearance. While often perceived as a defect, the TSB clarifies that the presence of such Nissan window glass foreign material is generally not a warrantable condition.

What Nissan Recommends for Cleaning

Nissan recommends a specific cleaning approach using #0000 super fine steel wool to remove foreign material from window glass. This method is considered safe and effective when performed correctly.

1. Initial Cleaning: Begin by cleaning the window glass with soap and water. This step helps to remove any loose abrasive dirt or grit that could scratch the glass during the steel wool application.
2. Steel Wool Application: Once the glass is clean and dry, use #0000 super fine steel wool. This particular grade of steel wool is fine enough to clean without scratching the glass surface.
3. Rubbing Technique: Apply the steel wool by manually rubbing the affected areas. The TSB notes that the glass is unlikely to be damaged by rubbing too hard or too much, provided no power tools are used.
4. No Cleaners: It is specifically recommended not to use any cleaning solutions in conjunction with the steel wool.

This procedure aims to resolve issues with Nissan window glass foreign material efficiently.

Important Warnings for Owners

Nissan's TSB includes critical warnings to ensure the cleaning process is effective and does not cause further damage to the window glass:

• Contamination Prevention: Always use new steel wool from an unopened bag. Store any unused portion in a re-sealable container to prevent contamination.
• Avoid Dirty Steel Wool: The bulletin explicitly states: "Do not use dirty or contaminated steel wool. Dirty or contaminated steel wool will scratch the window glass. If the steel wool is dropped on the floor, get a new piece of steel wool to clean the window glass."
• Prioritize Cleaning: Technicians are advised: "Always try to clean any window glass surface issue first with #0000 grade super fine steel wool before glass replacement is considered."

Claims and Warranty Information

It is important for owners to understand the warranty implications regarding foreign material on window glass. Nissan states that "Foreign material on the window glass surface is not a warrantable condition." This means that the cost of removing such material is typically not covered under warranty. Materials like the recommended steel wool are considered shop supplies.