The contact called on behalf of his son who owns a 2018 Ford F-150. The contact stated that while his son was driving on the highway with the cruise control set to 60 MPH, the transmission started slipping and the message Service Vehicle Soon was displayed. The vehicle was taken to a local Advanced Auto Parts where a handheld scanner was used to retrieved DTC: 176 (HEGO sensor circuit indicates system lean ‘ left side). The local dealer was contacted; however, the vehicle was not diagnosed because the VIN was not under recall. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 96,536.