2021-2026 Jeep Wrangler/Gladiator Filiform Corrosion Warranty

Jeep Warranty Bulletin D-25-15 (Rev. B), issued on February 19, 2026, provides updated guidelines for addressing aluminum filiform corrosion on all affected FCA US LLC vehicles, specifically focusing on the 2021-2026 Jeep Wrangler and Gladiator models. This revision introduces a new repair process for the inner door shell and outlines new Labor Operation (LOP) codes for repairing the Front and Rear Lower Inner Door Hem Flange on JL/JT vehicles, as detailed in Collision TSB 31-001-26. The bulletin also clarifies the Vehicle Digital Imaging (VDI) pre-approval process for paint repairs and panel replacements covered under an active corrosion warranty.

This update is crucial for ensuring proper diagnosis and repair of corrosion issues, particularly for the Jeep Wrangler filiform corrosion. It standardizes the process for dealerships, ensuring consistent application of warranty policy and efficient resolution of corrosion concerns.

Important Warnings for Owners

Owners should be aware of specific conditions and requirements related to this warranty bulletin:

• VDI Pre-Approval Not Required: "Vehicle Digital Imaging (VDI) pre-approval IS NOT required for outer surface corrosion, nor for JL/JT door repairs per TSB 31-001-26 if there is flaking for vehicles still under active corrosion warranty."
• VDI Pre-Approval Required: "Vehicle Digital Imaging (VDI) pre-approval IS required for any potential non-cosmetic repairs on the inside panels, other than JL/JT doors, non-visible from the exterior with the door/hood/tailgate closed, for vehicles still under active corrosion warranty." Cost estimates are not required for these cases.
• Superseded Bulletins: This bulletin explicitly "replaces Corrosion Warranty Bulletins (D-22-17/ D-23-04/ D-23-22), which should be removed from your files."
• Goodwill Coverage with Documentation: Customers who "have valid documentation of their corrosion concern prior to the expiration of the corrosion warranty will be allowed to not pay the customer participation amount as generated by the Warranty Goodwill Grid, at this time."
• Goodwill Coverage Without Documentation: Customers who "DO NOT have valid documentation of their corrosion concern prior to the expiration of the corrosion warranty will need to participate with the repair costs as outlined by the Warranty Goodwill Grid."

Symptoms of Filiform Corrosion

Filiform corrosion typically appears as thread-like filaments or worm-like paths under the paint film, often originating from a defect or scratch in the coating. Owners might observe:

• Flaking: Paint lifting or peeling in small areas, especially around seams or edges.
• Pitting: Small depressions or holes in the metal surface, often visible after the paint has flaked away.
• Blemishes: Discoloration or irregularities on the panel surfaces.

These symptoms can occur on both outer and inner panels, including door hems, hoods, tailgates, and windshield frames. The presence of Jeep Wrangler filiform corrosion can degrade the vehicle's appearance and, if left untreated, potentially compromise the structural integrity of the affected panels.

Diagnosis and Pre-Approval Process

The bulletin outlines a decision tree for diagnosing filiform corrosion and determining when Vehicle Digital Imaging (VDI) pre-approval is required. For corrosion visible on the outside of the vehicle (Class A), VDI pre-approval is generally not needed. However, for corrosion on inside panels (Class B) that are not visible from the exterior when doors/hood/tailgate are closed, VDI pre-approval is often mandatory.

Specifically, if flaking is found on inside panels of the hood or tailgate, VDI pre-approval is required. If flaking is on JL/JT doors, VDI pre-approval is not required. For any pre-approval submission, a photo of the VIN placard, showing the VIN, Paint Code, and paint color, must be included. Dealers must submit clear photos of the affected area(s) and identify the body panel. For corrosion on the edge of the outer surface that wraps to the hem, photos of both the outer surface and hem are required for repair.

Repair Procedure Summary

This bulletin provides detailed Labor Operation (LOP) codes for various repairs related to aluminum filiform corrosion. The repair strategy has been updated to focus on repairing the inner door shell rather than replacing entire JL/JT door shells. A redesigned hinge has also been introduced for Jeep Wrangler (JL) and Jeep Gladiator (JT) vehicles to address corrosion issues, requiring hinges to be replaced as a set to avoid visual mismatches.

JL/JT Door Hem Repair LOPs:

• 23-75-53-07: JL/JT Front Lower Inner Door Hem Flange Repair (3.9 labor hours)
• 23-75-54-07: JL/JT Rear Lower Inner Door Hem Flange Repair (3.9 labor hours)

Single-Panel Repair LOPs: These LOPs cover individual panel repairs, including front and rear doors, hood, tailgate, and windshield frame. For example, LOP 23755302 is for a Single Front Door Repair, and 23752111 is for a Hood Aluminum Repair.

Single-Panel Replace LOPs: These LOPs are for replacing individual panels, such as LOP 23855311 for a Single Front Door Replace, and 23852112 for a Hood Aluminum Replace.

Multi-Panel Repair and Replace LOPs: The bulletin also lists numerous multi-panel LOPs, combining various single-panel repairs or replacements. These complex operations cover scenarios like