The contact owed a 2015 Kia Optima. The contact received notification of NHTSA Campaign Number: 23V652000 (Service Brakes, Hydraulic) however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable time for the recall repair. The contact stated that while the vehicle was parked in the driveway, the contact started the vehicle to warm it up and went back into the house while the vehicle warmed up. The contact stated that when she returned from the house to enter the vehicle, the vehicle had independently turned off. The contact stated she restarted the vehicle, however the contact noticed smoke exiting from under the vehicle hood. The contact stated the vehicle was turned off and a family member attempted to raise the engine hood when he noticed the hood was too hot to touch. The contact stated smoke and fire exited from under the engine hood. The contact called the fire department. The local fire department arrived on the scene and extinguished the fire. A fire report was filed. The contact stated that her younger brother suffered a panic attack. The contact stated that the burned vehicle remained in the residential driveway. The dealer was unaware of the failure but confirmed that parts were not yet available. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 69,000. The VIN was unavailable.