The contact rented a 2025 Nissan Versa. The contact stated that while driving 60 MPH, the Forward Collision Avoidance sensor illuminated when it started to rain. The Forward Collision Avoidance sensor warning light illuminated, and a message to Please go to Safety Map Information was displayed. The contact stated that as soon as it stopped raining, the warning light turned off. The contact attempted to inform the vehicle inspector of the failure; however, the inspector did not understand the failure that was experienced. The vehicle was not taken to be diagnosed or repaired. The dealer was not made aware of the failure. The manufacturer was not made aware of the failure. The failure mileage was approximately 50.