The contact owns a 2019 Nissan Altima. The contact stated that the vehicle failed to start. The vehicle was towed to an independent mechanic, where it was diagnosed that the engine had experienced an electrical shock due to coolant intrusion onto the spark plugs. The mechanic determined that the engine needed to be replaced. The dealer was notified of the failure and informed the contact that the engine needed to be replaced; however, the dealer had not diagnosed the vehicle. The vehicle was not repaired. The manufacturer was notified of the failure and informed the contact that the repair could not be covered because the VIN was not under recall. The failure mileage was approximately 170,000.