The contact owns a 2018 Ford Expedition. The contact stated that while driving at an undisclosed speed, the vehicle went into LIMP Mode with the maintenance warning light illuminated. The vehicle was taken to the dealer, where it was diagnosed with transmission failure. The contact was informed that the transmission needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 130,000.