The contact owns a 2015 Nissan Altima. The contact stated while driving at an undisclosed speed, the vehicle jerked and made an abnormally loud sound. The check engine warning light intermittently illuminated. The vehicle returned to normal functionality, but the failure became a regular occurrence. The contact stated that on a separate occasion, the key fob failed to function as intended. The vehicle was taken to an independent mechanic, where it was diagnosed and determined that the transmission needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure but denied assistance in covering the cost of the repair. The vehicle remained at the residence and had not been driven since the failure. The failure mileage was unknown.