This bulletin supersedes 25-2621

Bulletin number

TSB 26-2185

Component

Electrical system

Summary

This bulletin supersedes 25-2621. Reason for update: add 2026 model year vehicles and Transit, update the causal part number (15604), update the Service Procedure, update the service labor operations for 2023 F-Super Duty, and add service labor operations for Transit. Some vehicles listed in the Model statement above may exhibit a no crank/no start condition where the customer cannot start their vehicle. The vehicle may also exhibit a "No Key Detected" message displayed on the instrument panel cluster (IPC), and no key fob works in the back up slot. The remote keyless entry (RKE) functionality will work to lock/unlock the vehicle.

Owners of these vehicles have filed 334 complaints in the electrical category.