The contact owns a 2013 Hyundai Tucson. The contact stated while driving and exceeding 30 MPH, the transmission was slipping out of gear. There was no warning light illuminated. The vehicle was towed to a dealer located in Canada, where it was diagnosed that the transmission sensor had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 60,000.