The contact owns a 2009 Nissan Murano. The contact stated while driving at an undisclosed speed, the transmission started slipping. There was no warning light illuminated. The vehicle was taken to an independent mechanic, who diagnosed a failure with the transmission. The contact was informed that the transmission needed to be rebuilt or replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 216,000.